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Posted to commits@groovy.apache.org by su...@apache.org on 2017/12/20 00:56:37 UTC
[40/49] groovy git commit: Move source files to proper packages
http://git-wip-us.apache.org/repos/asf/groovy/blob/10110145/src/main/groovy/groovy/lang/ExpandoMetaClass.java
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diff --git a/src/main/groovy/groovy/lang/ExpandoMetaClass.java b/src/main/groovy/groovy/lang/ExpandoMetaClass.java
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package groovy.lang;
+
+import org.codehaus.groovy.reflection.CachedClass;
+import org.codehaus.groovy.reflection.MixinInMetaClass;
+import org.codehaus.groovy.runtime.DefaultCachedMethodKey;
+import org.codehaus.groovy.runtime.DefaultGroovyMethods;
+import org.codehaus.groovy.runtime.InvokerHelper;
+import org.codehaus.groovy.runtime.MetaClassHelper;
+import org.codehaus.groovy.runtime.MethodKey;
+import org.codehaus.groovy.runtime.callsite.CallSite;
+import org.codehaus.groovy.runtime.callsite.ConstructorMetaMethodSite;
+import org.codehaus.groovy.runtime.callsite.PogoMetaClassSite;
+import org.codehaus.groovy.runtime.callsite.PojoMetaClassSite;
+import org.codehaus.groovy.runtime.callsite.StaticMetaClassSite;
+import org.codehaus.groovy.runtime.metaclass.ClosureMetaMethod;
+import org.codehaus.groovy.runtime.metaclass.ClosureStaticMetaMethod;
+import org.codehaus.groovy.runtime.metaclass.DefaultMetaClassInfo;
+import org.codehaus.groovy.runtime.metaclass.MethodSelectionException;
+import org.codehaus.groovy.runtime.metaclass.MixedInMetaClass;
+import org.codehaus.groovy.runtime.metaclass.MixinInstanceMetaMethod;
+import org.codehaus.groovy.runtime.metaclass.OwnedMetaClass;
+import org.codehaus.groovy.runtime.metaclass.ThreadManagedMetaBeanProperty;
+import org.codehaus.groovy.util.FastArray;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+/**
+ * ExpandoMetaClass is a MetaClass that behaves like an Expando, allowing the addition or replacement
+ * of methods, properties and constructors on the fly.
+ * <p>
+ * Some examples of usage:
+ * <pre>
+ * // defines or replaces instance method:
+ * metaClass.myMethod = { args -> }
+ *
+ * // defines a new instance method
+ * metaClass.myMethod << { args -> }
+ *
+ * // creates multiple overloaded methods of the same name
+ * metaClass.myMethod << { String s -> } << { Integer i -> }
+ *
+ * // defines or replaces a static method with the 'static' qualifier
+ * metaClass.'static'.myMethod = { args -> }
+ *
+ * // defines a new static method with the 'static' qualifier
+ * metaClass.'static'.myMethod << { args -> }
+ *
+ * // defines a new constructor
+ * metaClass.constructor << { String arg -> }
+ *
+ * // defines or replaces a constructor
+ * metaClass.constructor = { String arg -> }
+ *
+ * // defines a new property with an initial value of "blah"
+ * metaClass.myProperty = "blah"
+ * </pre>
+ * <p>
+ * ExpandoMetaClass also supports a DSL/builder like notation to combine multiple definitions together. So instead of this:
+ * <pre>
+ * Number.metaClass.multiply = { Amount amount -> amount.times(delegate) }
+ * Number.metaClass.div = { Amount amount -> amount.inverse().times(delegate) }
+ * </pre>
+ * You can also now do this:
+ * <pre>
+ * Number.metaClass {
+ * multiply { Amount amount -> amount.times(delegate) }
+ * div { Amount amount -> amount.inverse().times(delegate) }
+ * }
+ * </pre>
+ * <p>
+ * ExpandoMetaClass also supports runtime mixins. While {@code @Mixin} allows you to mix in new behavior
+ * to classes you own and are designing, you can not easily mixin anything to types you didn't own, e.g.
+ * from third party libraries or from JDK library classes.
+ * Runtime mixins let you add a mixin on any type at runtime.
+ * <pre>
+ * interface Vehicle {
+ * String getName()
+ * }
+ *
+ * // Category annotation style
+ * {@code @Category}(Vehicle) class FlyingAbility {
+ * def fly() { "I'm the ${name} and I fly!" }
+ * }
+ *
+ * // traditional category style
+ * class DivingAbility {
+ * static dive(Vehicle self) { "I'm the ${self.name} and I dive!" }
+ * }
+ *
+ * // provided by a third-party, so can't augment using Mixin annotation
+ * class JamesBondVehicle implements Vehicle {
+ * String getName() { "James Bond's vehicle" }
+ * }
+ *
+ * // Can be added via metaClass, e.g.:
+ * // JamesBondVehicle.metaClass.mixin DivingAbility, FlyingAbility
+ * // Or using shorthand through DGM method on Class
+ * JamesBondVehicle.mixin DivingAbility, FlyingAbility
+ *
+ * assert new JamesBondVehicle().fly() ==
+ * "I'm the James Bond's vehicle and I fly!"
+ * assert new JamesBondVehicle().dive() ==
+ * "I'm the James Bond's vehicle and I dive!"
+ * </pre>
+ * As another example, consider the following class definitions:
+ * <pre>
+ * class Student {
+ * List<String> schedule = []
+ * def addLecture(String lecture) { schedule << lecture }
+ * }
+ *
+ * class Worker {
+ * List<String> schedule = []
+ * def addMeeting(String meeting) { schedule << meeting }
+ * }
+ * </pre>
+ * We can mimic a form of multiple inheritance as follows:
+ * <pre>
+ * class CollegeStudent {
+ * static { mixin Student, Worker }
+ * }
+ * new CollegeStudent().with {
+ * addMeeting('Performance review with Boss')
+ * addLecture('Learn about Groovy Mixins')
+ * println schedule
+ * println mixedIn[Student].schedule
+ * println mixedIn[Worker].schedule
+ * }
+ * </pre>
+ * Which outputs these lines when run:
+ * <pre>
+ * [Performance review with Boss]
+ * [Learn about Groovy Mixins]
+ * [Performance review with Boss]
+ * </pre>
+ * Perhaps some explanation is required here. The methods and properties of Student and Worker are
+ * added to CollegeStudent. Worker is added last, so for overlapping methods, its methods will
+ * be used, e.g. when calling <code>schedule</code>, it will be the schedule property (getSchedule method)
+ * from Worker that is used. The schedule property from Student will be shadowed but the <code>mixedIn</code>
+ * notation allows us to get to that too if we need as the last two lines show.
+ * <p>
+ * We can also be a little more dynamic and not require the CollegeStudent class to
+ * be defined at all, e.g.:
+ * <pre>
+ * def cs = new Object()
+ * cs.metaClass {
+ * mixin Student, Worker
+ * getSchedule {
+ * mixedIn[Student].schedule + mixedIn[Worker].schedule
+ * }
+ * }
+ * cs.with {
+ * addMeeting('Performance review with Boss')
+ * addLecture('Learn about Groovy Mixins')
+ * println schedule
+ * }
+ * </pre>
+ * Which outputs this line when run:
+ * <pre>
+ * [Learn about Groovy Mixins, Performance review with Boss]
+ * </pre>
+ * As another example, we can also define a no dup queue by mixing in some
+ * Queue and Set functionality as follows:
+ * <pre>
+ * def ndq = new Object()
+ * ndq.metaClass {
+ * mixin ArrayDeque
+ * mixin HashSet
+ * leftShift = { Object o ->
+ * if (!mixedIn[Set].contains(o)) {
+ * mixedIn[Queue].push(o)
+ * mixedIn[Set].add(o)
+ * }
+ * }
+ * }
+ * ndq << 1
+ * ndq << 2
+ * ndq << 1
+ * assert ndq.size() == 2
+ * </pre>
+ * As a final example, we sometimes need to pass such mixed in classes or objects
+ * into Java methods which require a given static type but the ExpandoMetaClass mixin approach uses a very dynamic
+ * approach based on duck typing rather than static interface definitions, so doesn't by default
+ * produce objects matching the required static type. Luckily, there is a mixins capability
+ * within ExpandoMetaClass which supports the use of Groovy's common 'as StaticType' notation to produce an object
+ * having the correct static type so that it can be passed to the Java method call in question.
+ * A slightly contrived example illustrating this feature:
+ * <pre>
+ * class CustomComparator implements Comparator {
+ * int compare(Object a, b) { return a.size() - b.size() }
+ * }
+ *
+ * class CustomCloseable implements Closeable {
+ * void close() { println 'Lights out - I am closing' }
+ * }
+ *
+ * import static mypackage.IOUtils.closeQuietly
+ * import static java.util.Collections.sort
+ * def o = new Object()
+ * o.metaClass.mixin CustomComparator, CustomCloseable
+ * def items = ['a', 'bbb', 'cc']
+ * sort(items, o as Comparator)
+ * println items // => [a, cc, bbb]
+ * closeQuietly(o as Closeable) // => Lights out - I am closing
+ * </pre>
+ * <p>
+ * <b>Further details</b>
+ * <p>
+ * When using the default implementations of MetaClass, methods are only allowed to be added before initialize() is called.
+ * In other words you create a new MetaClass, add some methods and then call initialize(). If you attempt to add new methods
+ * after initialize() has been called, an error will be thrown. This is to ensure that the MetaClass can operate appropriately
+ * in multi-threaded environments as it forces you to do all method additions at the beginning, before using the MetaClass.
+ * <p>
+ * ExpandoMetaClass differs here from the default in that it allows you to add methods after initialize has been called.
+ * This is done by setting the initialize flag internally to false and then add the methods. Since this is not thread
+ * safe it has to be done in a synchronized block. The methods to check for modification and initialization are
+ * therefore synchronized as well. Any method call done through this meta class will first check if the it is
+ * synchronized. Should this happen during a modification, then the method cannot be selected or called unless the
+ * modification is completed.
+ * <p>
+ *
+ * @author Graeme Rocher
+ * @since 1.5
+ */
+public class ExpandoMetaClass extends MetaClassImpl implements GroovyObject {
+
+ private static final Class[] EMPTY_CLASS_ARRAY = new Class[0];
+ private static final String META_CLASS = "metaClass";
+ private static final String CLASS = "class";
+ private static final String META_METHODS = "metaMethods";
+ private static final String METHODS = "methods";
+ private static final String PROPERTIES = "properties";
+ public static final String STATIC_QUALIFIER = "static";
+ public static final String CONSTRUCTOR = "constructor";
+
+ private static final String CLASS_PROPERTY = "class";
+ private static final String META_CLASS_PROPERTY = "metaClass";
+ private static final String GROOVY_CONSTRUCTOR = "<init>";
+
+ // These two properties are used when no ExpandoMetaClassCreationHandle is present
+
+ private MetaClass myMetaClass;
+ private boolean initialized;
+ private volatile boolean modified;
+
+ private boolean initCalled;
+ private final ReentrantReadWriteLock rwl = new ReentrantReadWriteLock();
+ private final Lock readLock = rwl.readLock();
+ private final Lock writeLock = rwl.writeLock();
+
+ private final boolean allowChangesAfterInit;
+ public boolean inRegistry;
+
+ private final Set<MetaMethod> inheritedMetaMethods = new HashSet<MetaMethod>();
+ private final Map<String, MetaProperty> beanPropertyCache = new ConcurrentHashMap<String, MetaProperty>(16, 0.75f, 1);
+ private final Map<String, MetaProperty> staticBeanPropertyCache = new ConcurrentHashMap<String, MetaProperty>(16, 0.75f, 1);
+ private final Map<MethodKey, MetaMethod> expandoMethods = new ConcurrentHashMap<MethodKey, MetaMethod>(16, 0.75f, 1);
+
+ public Collection getExpandoSubclassMethods() {
+ return expandoSubclassMethods.values();
+ }
+
+ private final ConcurrentHashMap expandoSubclassMethods = new ConcurrentHashMap(16, 0.75f, 1);
+ private final Map<String, MetaProperty> expandoProperties = new ConcurrentHashMap<String, MetaProperty>(16, 0.75f, 1);
+ private ClosureStaticMetaMethod invokeStaticMethodMethod;
+ private final Set<MixinInMetaClass> mixinClasses = new LinkedHashSet<MixinInMetaClass>();
+
+ public ExpandoMetaClass(Class theClass, boolean register, boolean allowChangesAfterInit, MetaMethod[] add) {
+ this(GroovySystem.getMetaClassRegistry(), theClass, register, allowChangesAfterInit, add);
+ }
+
+ public ExpandoMetaClass(MetaClassRegistry registry, Class theClass, boolean register, boolean allowChangesAfterInit, MetaMethod[] add) {
+ super(registry, theClass, add);
+ this.myMetaClass = InvokerHelper.getMetaClass(getClass());
+ this.inRegistry = register;
+ this.allowChangesAfterInit = allowChangesAfterInit;
+ }
+
+ /**
+ * Constructs a new ExpandoMetaClass instance for the given class
+ *
+ * @param theClass The class that the MetaClass applies to
+ */
+ public ExpandoMetaClass(Class theClass) {
+ this(theClass,false,false,null);
+ }
+
+ public ExpandoMetaClass(Class theClass, MetaMethod [] add) {
+ this(theClass,false,false,add);
+ }
+
+ /**
+ * Constructs a new ExpandoMetaClass instance for the given class optionally placing the MetaClass
+ * in the MetaClassRegistry automatically
+ *
+ * @param theClass The class that the MetaClass applies to
+ * @param register True if the MetaClass should be registered inside the MetaClassRegistry. This defaults to true and ExpandoMetaClass will effect all instances if changed
+ */
+ public ExpandoMetaClass(Class theClass, boolean register) {
+ this(theClass,register,false,null);
+ }
+
+ public ExpandoMetaClass(Class theClass, boolean register, MetaMethod [] add) {
+ this(theClass, register, false, add);
+ }
+
+ /**
+ * Constructs a new ExpandoMetaClass instance for the given class optionally placing the MetaClass
+ * in the MetaClassRegistry automatically
+ *
+ * @param theClass The class that the MetaClass applies to
+ * @param register True if the MetaClass should be registered inside the MetaClassRegistry. This defaults to true and ExpandoMetaClass will effect all instances if changed
+ * @param allowChangesAfterInit Should the meta class be modifiable after initialization. Default is false.
+ */
+ public ExpandoMetaClass(Class theClass, boolean register, boolean allowChangesAfterInit) {
+ this(theClass, register, allowChangesAfterInit, null);
+ }
+
+ public MetaMethod findMixinMethod(String methodName, Class[] arguments) {
+ for (MixinInMetaClass mixin : mixinClasses) {
+ final CachedClass mixinClass = mixin.getMixinClass();
+ MetaClass metaClass = mixinClass.classInfo.getMetaClassForClass();
+ if (metaClass == null) {
+ metaClass = GroovySystem.getMetaClassRegistry().getMetaClass(mixinClass.getTheClass());
+ }
+
+ MetaMethod metaMethod = metaClass.pickMethod(methodName, arguments);
+ if (metaMethod == null && metaClass instanceof MetaClassImpl) {
+ MetaClassImpl mc = (MetaClassImpl) metaClass;
+ for (CachedClass cl = mc.getTheCachedClass().getCachedSuperClass(); cl != null; cl = cl.getCachedSuperClass()) {
+ metaMethod = mc.getMethodWithoutCaching(cl.getTheClass(), methodName, arguments, false);
+ if (metaMethod != null)
+ break;
+ }
+ }
+ if (metaMethod != null) {
+ MetaMethod method = new MixinInstanceMetaMethod(metaMethod, mixin);
+
+ if (method.getParameterTypes().length == 1 && !method.getParameterTypes()[0].isPrimitive) {
+ MetaMethod noParam = pickMethod(methodName, EMPTY_CLASS_ARRAY);
+ // if the current call itself is with empty arg class array, no need to recurse with 'new Class[0]'
+ if (noParam == null && arguments.length != 0) {
+ try {
+ findMixinMethod(methodName, EMPTY_CLASS_ARRAY);
+ } catch (MethodSelectionException msex) {
+ /*
+ * Here we just additionally tried to find another no-arg mixin method of the same name and register that as well, if found.
+ * Safe to ignore a MethodSelectionException in this additional exercise. (GROOVY-4999)
+ */
+ }
+ }
+ }
+
+ registerInstanceMethod(method);
+ return method;
+ }
+ }
+ return null;
+ }
+
+ protected void onInvokeMethodFoundInHierarchy(MetaMethod method) {
+ this.invokeMethodMethod = method;
+ }
+
+ protected void onSuperMethodFoundInHierarchy(MetaMethod method) {
+ addSuperMethodIfNotOverridden(method);
+ }
+
+ protected void onSuperPropertyFoundInHierarchy(MetaBeanProperty property) {
+ addMetaBeanProperty(property);
+ }
+
+ protected void onSetPropertyFoundInHierarchy(MetaMethod method) {
+ this.setPropertyMethod = method;
+ }
+
+ protected void onGetPropertyFoundInHierarchy(MetaMethod method) {
+ this.getPropertyMethod = method;
+ }
+
+ public boolean isModified() {
+ return this.modified;
+ }
+
+ public void registerSubclassInstanceMethod(String name, Class klazz, Closure closure) {
+ final List<MetaMethod> list = ClosureMetaMethod.createMethodList(name, klazz, closure);
+ for (MetaMethod metaMethod : list) {
+ registerSubclassInstanceMethod(metaMethod);
+ }
+ }
+
+ public void registerSubclassInstanceMethod(MetaMethod metaMethod) {
+ modified = true;
+
+ final String name = metaMethod.getName();
+ Object methodOrList = expandoSubclassMethods.get(name);
+ if (methodOrList == null) {
+ expandoSubclassMethods.put(name, metaMethod);
+ } else {
+ if (methodOrList instanceof MetaMethod) {
+ FastArray arr = new FastArray(2);
+ arr.add(methodOrList);
+ arr.add(metaMethod);
+ expandoSubclassMethods.put(name, arr);
+ } else {
+ ((FastArray) methodOrList).add(metaMethod);
+ }
+ }
+ }
+
+ public void addMixinClass(MixinInMetaClass mixin) {
+ mixinClasses.add(mixin);
+ }
+
+ public Object castToMixedType(Object obj, Class type) {
+ for (MixinInMetaClass mixin : mixinClasses) {
+ if (type.isAssignableFrom(mixin.getMixinClass().getTheClass()))
+ return mixin.getMixinInstance(obj);
+ }
+ return null;
+ }
+
+ /**
+ * For simulating closures in Java
+ */
+ private interface Callable {
+ void call();
+ }
+
+ /**
+ * Call to enable global use of ExpandoMetaClass within the registry.
+ * This has the advantage that inheritance will function correctly and
+ * metaclass modifications will also apply to existing objects,
+ * but has a higher memory usage on the JVM than normal Groovy
+ */
+ public static void enableGlobally() {
+ DefaultMetaClassInfo.setWithoutCustomMetaclassCreationHandle(false);
+ ExpandoMetaClassCreationHandle.enable();
+ }
+
+ /**
+ * Call to disable the global use of ExpandoMetaClass
+ */
+ public static void disableGlobally() {
+ DefaultMetaClassInfo.setWithoutCustomMetaclassCreationHandle(true);
+ ExpandoMetaClassCreationHandle.disable();
+ }
+
+ /* (non-Javadoc)
+ * @see groovy.lang.MetaClassImpl#initialize()
+ */
+
+ public void initialize() {
+ try {
+ writeLock.lock();
+ if (!isInitialized()) {
+ super.initialize();
+ setInitialized(true);
+ this.initCalled = true;
+ }
+ } finally {
+ // downgrade to readlock before releasing just in case
+ readLock.lock();
+ writeLock.unlock();
+ readLock.unlock();
+ }
+ }
+
+ /**
+ * Checks if the meta class is initialized.
+ * @see groovy.lang.MetaClassImpl#isInitialized()
+ */
+ protected boolean isInitialized() {
+ try {
+ readLock.lock();
+ return this.initialized;
+ } finally {
+ readLock.unlock();
+ }
+ }
+
+ protected void setInitialized(boolean b) {
+ this.initialized = b;
+ }
+
+ private void addSuperMethodIfNotOverridden(final MetaMethod metaMethodFromSuper) {
+ performOperationOnMetaClass(new Callable() {
+ public void call() {
+
+ MetaMethod existing = null;
+ try {
+ existing = pickMethod(metaMethodFromSuper.getName(), metaMethodFromSuper.getNativeParameterTypes());
+ } catch ( GroovyRuntimeException e) {
+ // ignore, this happens with overlapping method definitions
+ }
+
+ if (existing == null) {
+ addMethodWithKey(metaMethodFromSuper);
+ } else {
+ boolean isGroovyMethod = getMetaMethods().contains(existing);
+
+ if (isGroovyMethod) {
+ addMethodWithKey(metaMethodFromSuper);
+ } else if (inheritedMetaMethods.contains(existing)) {
+ inheritedMetaMethods.remove(existing);
+ addMethodWithKey(metaMethodFromSuper);
+ }
+ }
+ }
+
+ private void addMethodWithKey(final MetaMethod metaMethodFromSuper) {
+ inheritedMetaMethods.add(metaMethodFromSuper);
+ if (metaMethodFromSuper instanceof ClosureMetaMethod) {
+ ClosureMetaMethod closureMethod = (ClosureMetaMethod)metaMethodFromSuper;
+ String name = metaMethodFromSuper.getName();
+ final Class declaringClass = metaMethodFromSuper.getDeclaringClass().getTheClass();
+ ClosureMetaMethod localMethod = ClosureMetaMethod.copy(closureMethod);
+ addMetaMethod(localMethod);
+
+ MethodKey key = new DefaultCachedMethodKey(declaringClass, name, localMethod.getParameterTypes(), false);
+
+ checkIfGroovyObjectMethod(localMethod);
+ expandoMethods.put(key, localMethod);
+
+ }
+ }
+ });
+ }
+
+ /**
+ * Instances of this class are returned when using the << left shift operator.
+ * <p>
+ * Example:
+ * <p>
+ * metaClass.myMethod << { String args -> }
+ * <p>
+ * This allows callbacks to the ExpandoMetaClass for registering appending methods
+ *
+ * @author Graeme Rocher
+ */
+ protected class ExpandoMetaProperty extends GroovyObjectSupport {
+
+ protected String propertyName;
+ protected boolean isStatic;
+
+ protected ExpandoMetaProperty(String name) {
+ this(name, false);
+ }
+
+ protected ExpandoMetaProperty(String name, boolean isStatic) {
+ this.propertyName = name;
+ this.isStatic = isStatic;
+ }
+
+ public String getPropertyName() {
+ return this.propertyName;
+ }
+
+ public boolean isStatic() {
+ return this.isStatic;
+ }
+
+ public Object leftShift(Object arg) {
+ registerIfClosure(arg, false);
+ return this;
+ }
+
+ private void registerIfClosure(Object arg, boolean replace) {
+ if (arg instanceof Closure) {
+ Closure callable = (Closure) arg;
+ final List<MetaMethod> list = ClosureMetaMethod.createMethodList(propertyName, theClass, callable);
+ if (list.isEmpty() && this.isStatic) {
+ Class[] paramTypes = callable.getParameterTypes();
+ registerStatic(callable, replace, paramTypes);
+ return;
+ }
+ for (MetaMethod method : list) {
+ Class[] paramTypes = method.getNativeParameterTypes();
+ if (this.isStatic) {
+ registerStatic(callable, replace, paramTypes);
+ } else {
+ registerInstance(method, replace, paramTypes);
+ }
+ }
+ }
+ }
+
+ private void registerStatic(Closure callable, boolean replace, Class[] paramTypes) {
+ Method foundMethod = checkIfMethodExists(theClass, propertyName, paramTypes, true);
+ if (foundMethod != null && !replace)
+ throw new GroovyRuntimeException("Cannot add new static method [" + propertyName + "] for arguments [" + DefaultGroovyMethods.inspect(paramTypes) + "]. It already exists!");
+ registerStaticMethod(propertyName, callable, paramTypes);
+ }
+
+ private void registerInstance(MetaMethod method, boolean replace, Class[] paramTypes) {
+ Method foundMethod = checkIfMethodExists(theClass, propertyName, paramTypes, false);
+ if (foundMethod != null && !replace)
+ throw new GroovyRuntimeException("Cannot add new method [" + propertyName + "] for arguments [" + DefaultGroovyMethods.inspect(paramTypes) + "]. It already exists!");
+ registerInstanceMethod(method);
+ }
+
+ private Method checkIfMethodExists(Class methodClass, String methodName, Class[] paramTypes, boolean staticMethod) {
+ Method foundMethod = null;
+ Method[] methods = methodClass.getMethods();
+ for (Method method : methods) {
+ if (method.getName().equals(methodName) && Modifier.isStatic(method.getModifiers()) == staticMethod) {
+ if (MetaClassHelper.parametersAreCompatible(paramTypes, method.getParameterTypes())) {
+ foundMethod = method;
+ break;
+ }
+ }
+ }
+ return foundMethod;
+ }
+
+ /* (non-Javadoc)
+ * @see groovy.lang.GroovyObjectSupport#getProperty(java.lang.String)
+ */
+
+ public Object getProperty(String property) {
+ this.propertyName = property;
+ return this;
+ }
+ /* (non-Javadoc)
+ * @see groovy.lang.GroovyObjectSupport#setProperty(java.lang.String, java.lang.Object)
+ */
+
+ public void setProperty(String property, Object newValue) {
+ this.propertyName = property;
+ registerIfClosure(newValue, true);
+ }
+ }
+
+ /* (non-Javadoc)
+ * @see groovy.lang.MetaClassImpl#invokeConstructor(java.lang.Object[])
+ */
+
+ public Object invokeConstructor(Object[] arguments) {
+
+ // TODO This is the only area where this MetaClass needs to do some interception because Groovy's current
+ // MetaClass uses hard coded references to the java.lang.reflect.Constructor class so you can't simply
+ // inject Constructor like you can do properties, methods and fields. When Groovy's MetaClassImpl is
+ // refactored we can fix this
+ Class[] argClasses = MetaClassHelper.convertToTypeArray(arguments);
+ MetaMethod method = pickMethod(GROOVY_CONSTRUCTOR, argClasses);
+ if (method != null && method.getParameterTypes().length == arguments.length) {
+ return method.invoke(theClass, arguments);
+ }
+ return super.invokeConstructor(arguments);
+ }
+
+ /**
+ * Handles the ability to use the left shift operator to append new constructors
+ *
+ * @author Graeme Rocher
+ */
+ protected class ExpandoMetaConstructor extends GroovyObjectSupport {
+ public Object leftShift(Closure c) {
+ if (c != null) {
+ final List<MetaMethod> list = ClosureMetaMethod.createMethodList(GROOVY_CONSTRUCTOR, theClass, c);
+ for (MetaMethod method : list) {
+ Class[] paramTypes = method.getNativeParameterTypes();
+ Constructor ctor = retrieveConstructor(paramTypes);
+ if (ctor != null)
+ throw new GroovyRuntimeException("Cannot add new constructor for arguments [" + DefaultGroovyMethods.inspect(paramTypes) + "]. It already exists!");
+
+ registerInstanceMethod(method);
+ }
+ }
+
+ return this;
+ }
+ }
+
+ /* (non-Javadoc)
+ * @see groovy.lang.GroovyObject#getMetaClass()
+ */
+
+ public MetaClass getMetaClass() {
+ return myMetaClass;
+ }
+
+ /* (non-Javadoc)
+ * @see groovy.lang.GroovyObject#getProperty(java.lang.String)
+ */
+
+ public Object getProperty(String property) {
+ if (isValidExpandoProperty(property)) {
+ if (property.equals(STATIC_QUALIFIER)) {
+ return new ExpandoMetaProperty(property, true);
+ } else if (property.equals(CONSTRUCTOR)) {
+ return new ExpandoMetaConstructor();
+ } else {
+ if (myMetaClass.hasProperty(this, property) == null)
+ return new ExpandoMetaProperty(property);
+ else
+ return myMetaClass.getProperty(this, property);
+ }
+ } else {
+ return myMetaClass.getProperty(this, property);
+ }
+ }
+
+ public static boolean isValidExpandoProperty(String property) {
+ return !(property.equals(META_CLASS) || property.equals(CLASS) || property.equals(META_METHODS) || property.equals(METHODS) || property.equals(PROPERTIES));
+ }
+
+ /* (non-Javadoc)
+ * @see groovy.lang.GroovyObject#invokeMethod(java.lang.String, java.lang.Object)
+ */
+
+ public Object invokeMethod(String name, Object args) {
+ final Object[] argsArr = args instanceof Object[] ? (Object[]) args : new Object[]{args};
+ MetaMethod metaMethod = myMetaClass.getMetaMethod(name, argsArr);
+ if (metaMethod != null) {
+ // we have to use doMethodInvoke here instead of simply invoke,
+ // because getMetaMethod may provide a method that can not be called
+ // without further argument transformation, which is done only in
+ // doMethodInvoke
+ return metaMethod.doMethodInvoke(this, argsArr);
+ }
+
+ if (argsArr.length == 2 && argsArr[0] instanceof Class && argsArr[1] instanceof Closure) {
+ if (argsArr[0] == theClass)
+ registerInstanceMethod(name, (Closure) argsArr[1]);
+ else {
+ registerSubclassInstanceMethod(name, (Class) argsArr[0], (Closure) argsArr[1]);
+ }
+ return null;
+ }
+
+ if (argsArr.length == 1 && argsArr[0] instanceof Closure) {
+ registerInstanceMethod(name, (Closure) argsArr[0]);
+ return null;
+ }
+
+ throw new MissingMethodException(name, getClass(), argsArr);
+ }
+
+ /* (non-Javadoc)
+ * @see groovy.lang.GroovyObject#setMetaClass(groovy.lang.MetaClass)
+ */
+
+ public void setMetaClass(MetaClass metaClass) {
+ this.myMetaClass = metaClass;
+ }
+
+ /* (non-Javadoc)
+ * @see groovy.lang.GroovyObject#setProperty(java.lang.String, java.lang.Object)
+ */
+
+ public void setProperty(String property, Object newValue) {
+ if (newValue instanceof Closure) {
+ if (property.equals(CONSTRUCTOR)) {
+ property = GROOVY_CONSTRUCTOR;
+ }
+ Closure callable = (Closure) newValue;
+ final List<MetaMethod> list = ClosureMetaMethod.createMethodList(property, theClass, callable);
+ for (MetaMethod method : list) {
+ // here we don't care if the method exists or not we assume the
+ // developer is responsible and wants to override methods where necessary
+ registerInstanceMethod(method);
+ }
+ } else {
+ registerBeanProperty(property, newValue);
+ }
+ }
+
+ public ExpandoMetaClass define(Closure closure) {
+ final DefiningClosure definer = new DefiningClosure();
+ Object delegate = closure.getDelegate();
+ closure.setDelegate(definer);
+ closure.setResolveStrategy(Closure.DELEGATE_ONLY);
+ closure.call((Object)null);
+ closure.setDelegate(delegate);
+ closure.setResolveStrategy(Closure.DELEGATE_FIRST);
+ definer.definition = false;
+ return this;
+ }
+
+ protected synchronized void performOperationOnMetaClass(Callable c) {
+ try {
+ writeLock.lock();
+ if (allowChangesAfterInit) {
+ setInitialized(false);
+ }
+ c.call();
+ }
+ finally {
+ if (initCalled) {
+ setInitialized(true);
+ }
+ // downgrade to readlock before releasing just in case
+ readLock.lock();
+ writeLock.unlock();
+ readLock.unlock();
+ }
+ }
+
+ protected void checkInitalised() {
+ try {
+ readLock.lock();
+ super.checkInitalised();
+ } finally {
+ readLock.unlock();
+ }
+ }
+
+ /**
+ * Registers a new bean property
+ *
+ * @param property The property name
+ * @param newValue The properties initial value
+ */
+ public void registerBeanProperty(final String property, final Object newValue) {
+ performOperationOnMetaClass(new Callable() {
+ public void call() {
+ Class type = newValue == null ? Object.class : newValue.getClass();
+
+ MetaBeanProperty mbp = newValue instanceof MetaBeanProperty ? (MetaBeanProperty) newValue : new ThreadManagedMetaBeanProperty(theClass, property, type, newValue);
+
+ final MetaMethod getter = mbp.getGetter();
+ final MethodKey getterKey = new DefaultCachedMethodKey(theClass, getter.getName(), CachedClass.EMPTY_ARRAY, false);
+ final MetaMethod setter = mbp.getSetter();
+ final MethodKey setterKey = new DefaultCachedMethodKey(theClass, setter.getName(), setter.getParameterTypes(), false);
+ addMetaMethod(getter);
+ addMetaMethod(setter);
+
+ expandoMethods.put(setterKey, setter);
+ expandoMethods.put(getterKey, getter);
+ expandoProperties.put(mbp.getName(), mbp);
+
+ addMetaBeanProperty(mbp);
+ performRegistryCallbacks();
+ }
+
+ });
+ }
+
+ /**
+ * Registers a new instance method for the given method name and closure on this MetaClass
+ *
+ * @param metaMethod
+ */
+ public void registerInstanceMethod(final MetaMethod metaMethod) {
+ final boolean inited = this.initCalled;
+ performOperationOnMetaClass(new Callable() {
+ public void call() {
+ String methodName = metaMethod.getName();
+ checkIfGroovyObjectMethod(metaMethod);
+ MethodKey key = new DefaultCachedMethodKey(theClass, methodName, metaMethod.getParameterTypes(), false);
+
+ if (isInitialized()) {
+ throw new RuntimeException("Already initialized, cannot add new method: " + metaMethod);
+ }
+ // we always adds meta methods to class itself
+ addMetaMethodToIndex(metaMethod, metaMethodIndex.getHeader(theClass));
+
+ dropMethodCache(methodName);
+ expandoMethods.put(key, metaMethod);
+
+ if (inited && isGetter(methodName, metaMethod.getParameterTypes())) {
+ String propertyName = getPropertyForGetter(methodName);
+ registerBeanPropertyForMethod(metaMethod, propertyName, true, false);
+
+ } else if (inited && isSetter(methodName, metaMethod.getParameterTypes())) {
+ String propertyName = getPropertyForSetter(methodName);
+ registerBeanPropertyForMethod(metaMethod, propertyName, false, false);
+ }
+ performRegistryCallbacks();
+ }
+
+ });
+ }
+
+ public void registerInstanceMethod(String name, Closure closure) {
+ final List<MetaMethod> list = ClosureMetaMethod.createMethodList(name, theClass, closure);
+ for (MetaMethod method : list) {
+ registerInstanceMethod(method);
+ }
+ }
+
+ /**
+ * Overrides the behavior of parent getMethods() method to make MetaClass aware of added Expando methods
+ *
+ * @return A list of MetaMethods
+ * @see MetaObjectProtocol#getMethods()
+ */
+ public List<MetaMethod> getMethods() {
+ List<MetaMethod> methodList = new ArrayList<MetaMethod>();
+ methodList.addAll(this.expandoMethods.values());
+ methodList.addAll(super.getMethods());
+ return methodList;
+ }
+
+ public List<MetaProperty> getProperties() {
+ List<MetaProperty> propertyList = new ArrayList<MetaProperty>();
+ propertyList.addAll(super.getProperties());
+ return propertyList;
+ }
+
+
+ private void performRegistryCallbacks() {
+ MetaClassRegistry registry = GroovySystem.getMetaClassRegistry();
+ incVersion();
+ if (!modified) {
+ modified = true;
+ // Implementation note: By default Groovy uses soft references to store MetaClass
+ // this insures the registry doesn't grow and get out of hand. By doing this we're
+ // saying this this EMC will be a hard reference in the registry. As we're only
+ // going have a small number of classes that have modified EMC this is ok
+ if (inRegistry) {
+ MetaClass currMetaClass = registry.getMetaClass(theClass);
+ if (!(currMetaClass instanceof ExpandoMetaClass) && currMetaClass instanceof AdaptingMetaClass) {
+ ((AdaptingMetaClass) currMetaClass).setAdaptee(this);
+ } else {
+ registry.setMetaClass(theClass, this);
+ }
+ }
+
+ }
+ }
+
+ private void registerBeanPropertyForMethod(MetaMethod metaMethod, String propertyName, boolean getter, boolean isStatic) {
+ Map<String, MetaProperty> propertyCache = isStatic ? staticBeanPropertyCache : beanPropertyCache;
+ MetaBeanProperty beanProperty = (MetaBeanProperty) propertyCache.get(propertyName);
+ if (beanProperty==null) {
+ MetaProperty metaProperty = super.getMetaProperty(propertyName);
+ if (metaProperty instanceof MetaBeanProperty) {
+ boolean staticProp = Modifier.isStatic(metaProperty.getModifiers());
+ if (isStatic==staticProp) {
+ beanProperty = (MetaBeanProperty) metaProperty;
+ }
+ }
+ }
+ if (beanProperty == null) {
+ if (getter)
+ beanProperty = new MetaBeanProperty(propertyName, Object.class, metaMethod, null);
+ else
+ beanProperty = new MetaBeanProperty(propertyName, Object.class, null, metaMethod);
+
+ propertyCache.put(propertyName, beanProperty);
+ } else {
+ if (getter) {
+ MetaMethod setterMethod = beanProperty.getSetter();
+ Class type = setterMethod != null ? setterMethod.getParameterTypes()[0].getTheClass() : Object.class;
+ beanProperty = new MetaBeanProperty(propertyName, type, metaMethod, setterMethod);
+ propertyCache.put(propertyName, beanProperty);
+ } else {
+ MetaMethod getterMethod = beanProperty.getGetter();
+ beanProperty = new MetaBeanProperty(propertyName, metaMethod.getParameterTypes()[0].getTheClass(), getterMethod, metaMethod);
+ propertyCache.put(propertyName, beanProperty);
+ }
+ }
+ expandoProperties.put(beanProperty.getName(), beanProperty);
+ addMetaBeanProperty(beanProperty);
+ }
+
+ protected void registerStaticMethod(final String name, final Closure callable) {
+ registerStaticMethod(name, callable, null);
+ }
+
+ /**
+ * Registers a new static method for the given method name and closure on this MetaClass
+ *
+ * @param name The method name
+ * @param callable The callable Closure
+ */
+ protected void registerStaticMethod(final String name, final Closure callable, final Class[] paramTypes) {
+ performOperationOnMetaClass(new Callable() {
+ public void call() {
+ String methodName;
+ if (name.equals(METHOD_MISSING))
+ methodName = STATIC_METHOD_MISSING;
+ else if (name.equals(PROPERTY_MISSING))
+ methodName = STATIC_PROPERTY_MISSING;
+ else
+ methodName = name;
+
+ ClosureStaticMetaMethod metaMethod = null;
+
+ if (paramTypes != null) {
+ metaMethod = new ClosureStaticMetaMethod(methodName, theClass, callable, paramTypes);
+ } else {
+ metaMethod = new ClosureStaticMetaMethod(methodName, theClass, callable);
+ }
+
+ if (methodName.equals(INVOKE_METHOD_METHOD) && callable.getParameterTypes().length == 2) {
+ invokeStaticMethodMethod = metaMethod;
+ } else {
+ if (methodName.equals(METHOD_MISSING)) {
+ methodName = STATIC_METHOD_MISSING;
+ }
+ MethodKey key = new DefaultCachedMethodKey(theClass, methodName, metaMethod.getParameterTypes(), false);
+
+ addMetaMethod(metaMethod);
+ dropStaticMethodCache(methodName);
+// cacheStaticMethod(key,metaMethod);
+
+ if (isGetter(methodName, metaMethod.getParameterTypes())) {
+ String propertyName = getPropertyForGetter(methodName);
+ registerBeanPropertyForMethod(metaMethod, propertyName, true, true);
+
+ } else if (isSetter(methodName, metaMethod.getParameterTypes())) {
+ String propertyName = getPropertyForSetter(methodName);
+ registerBeanPropertyForMethod(metaMethod, propertyName, false, true);
+ }
+ performRegistryCallbacks();
+ expandoMethods.put(key, metaMethod);
+ }
+ }
+
+ });
+ }
+
+ protected Object getSubclassMetaMethods(String methodName) {
+ if (!isModified())
+ return null;
+
+ return expandoSubclassMethods.get(methodName);
+ }
+
+ /**
+ * @return The Java class enhanced by this MetaClass
+ */
+ public Class getJavaClass() {
+ return theClass;
+ }
+
+ /**
+ * Called from ExpandoMetaClassCreationHandle in the registry if it exists to
+ * set up inheritance handling
+ *
+ * @param modifiedSuperExpandos A list of modified super ExpandoMetaClass
+ */
+ public void refreshInheritedMethods(Set modifiedSuperExpandos) {
+ for (Iterator i = modifiedSuperExpandos.iterator(); i.hasNext();) {
+ ExpandoMetaClass superExpando = (ExpandoMetaClass) i.next();
+ if (superExpando != this) {
+ refreshInheritedMethods(superExpando);
+ }
+ }
+ }
+
+ private void refreshInheritedMethods(ExpandoMetaClass superExpando) {
+ List<MetaMethod> metaMethods = superExpando.getExpandoMethods();
+ for (MetaMethod metaMethod : metaMethods) {
+ if (metaMethod.isStatic()) {
+ if (superExpando.getTheClass() != getTheClass())
+ continue; // don't inherit static methods except our own
+ registerStaticMethod(metaMethod.getName(), (Closure) ((ClosureStaticMetaMethod) metaMethod).getClosure().clone());
+ } else
+ addSuperMethodIfNotOverridden(metaMethod);
+ }
+ Collection<MetaProperty> metaProperties = superExpando.getExpandoProperties();
+ for (Object metaProperty : metaProperties) {
+ MetaBeanProperty property = (MetaBeanProperty) metaProperty;
+ expandoProperties.put(property.getName(), property);
+ addMetaBeanProperty(property);
+ }
+ }
+
+
+ /**
+ * Returns a list of expando MetaMethod instances added to this ExpandoMetaClass
+ *
+ * @return the expandoMethods
+ */
+ public List<MetaMethod> getExpandoMethods() {
+ return Collections.unmodifiableList(DefaultGroovyMethods.toList(expandoMethods.values()));
+ }
+
+
+ /**
+ * Returns a list of MetaBeanProperty instances added to this ExpandoMetaClass
+ *
+ * @return the expandoProperties
+ */
+ public Collection<MetaProperty> getExpandoProperties() {
+ return Collections.unmodifiableCollection(expandoProperties.values());
+ }
+
+ /**
+ * Overrides default implementation just in case invokeMethod has been overridden by ExpandoMetaClass
+ *
+ * @see groovy.lang.MetaClassImpl#invokeMethod(Class, Object, String, Object[], boolean, boolean)
+ */
+ public Object invokeMethod(Class sender, Object object, String methodName, Object[] originalArguments, boolean isCallToSuper, boolean fromInsideClass) {
+ if (invokeMethodMethod != null) {
+ MetaClassHelper.unwrap(originalArguments);
+ return invokeMethodMethod.invoke(object, new Object[]{methodName, originalArguments});
+ }
+ return super.invokeMethod(sender, object, methodName, originalArguments, isCallToSuper, fromInsideClass);
+ }
+
+ /**
+ * Overrides default implementation just in case a static invoke method has been set on ExpandoMetaClass
+ *
+ * @see MetaClassImpl#invokeStaticMethod(Object, String, Object[])
+ */
+ public Object invokeStaticMethod(Object object, String methodName, Object[] arguments) {
+ if (invokeStaticMethodMethod != null) {
+ MetaClassHelper.unwrap(arguments);
+ return invokeStaticMethodMethod.invoke(object, new Object[]{methodName, arguments});
+ }
+ return super.invokeStaticMethod(object, methodName, arguments);
+ }
+
+ /**
+ * Overrides default implementation just in case getProperty method has been overridden by ExpandoMetaClass
+ *
+ * @see MetaClassImpl#getProperty(Class, Object, String, boolean, boolean)
+ */
+ public Object getProperty(Class sender, Object object, String name, boolean useSuper, boolean fromInsideClass) {
+ if (hasOverrideGetProperty(name) && getJavaClass().isInstance(object)) {
+ return getPropertyMethod.invoke(object, new Object[]{name});
+ }
+
+ if ("mixedIn".equals(name)) {
+ return new MixedInAccessor(object, mixinClasses);
+ }
+
+ return super.getProperty(sender, object, name, useSuper, fromInsideClass);
+ }
+
+ /**
+ * Overrides default implementation just in case getProperty method has been overridden by ExpandoMetaClass
+ *
+ * @see MetaClassImpl#getProperty(Object, String)
+ */
+ public Object getProperty(Object object, String name) {
+ if (hasOverrideGetProperty(name) && getJavaClass().isInstance(object)) {
+ return getPropertyMethod.invoke(object, new Object[]{name});
+ }
+ return super.getProperty(object, name);
+ }
+
+ private boolean hasOverrideGetProperty(String name) {
+ return getPropertyMethod != null && !name.equals(META_CLASS_PROPERTY) && !name.equals(CLASS_PROPERTY);
+ }
+
+ /**
+ * Overrides default implementation just in case setProperty method has been overridden by ExpandoMetaClass
+ *
+ * @see MetaClassImpl#setProperty(Class, Object, String, Object, boolean, boolean)
+ */
+
+ public void setProperty(Class sender, Object object, String name, Object newValue, boolean useSuper, boolean fromInsideClass) {
+ if (setPropertyMethod != null && !name.equals(META_CLASS_PROPERTY) && getJavaClass().isInstance(object)) {
+ setPropertyMethod.invoke(object, new Object[]{name, newValue});
+ return;
+ }
+ super.setProperty(sender, object, name, newValue, useSuper, fromInsideClass);
+ }
+
+ /**
+ * Looks up an existing MetaProperty by name
+ *
+ * @param name The name of the MetaProperty
+ * @return The MetaProperty or null if it doesn't exist
+ */
+ public MetaProperty getMetaProperty(String name) {
+ MetaProperty mp = this.expandoProperties.get(name);
+ if (mp != null) return mp;
+ return super.getMetaProperty(name);
+ }
+
+ /**
+ * Returns true if the MetaClass has the given property
+ *
+ * @param name The name of the MetaProperty
+ * @return True it exists as a MetaProperty
+ */
+ public boolean hasMetaProperty(String name) {
+ return getMetaProperty(name) != null;
+ }
+
+ /**
+ * Checks whether a MetaMethod for the given name and arguments exists
+ *
+ * @param name The name of the MetaMethod
+ * @param args The arguments to the meta method
+ * @return True if the method exists otherwise null
+ */
+ public boolean hasMetaMethod(String name, Class[] args) {
+ return super.pickMethod(name, args) != null;
+ }
+
+ /**
+ * Determine if this method name suffix is a legitimate bean property name.
+ * Either the first or second letter must be upperCase for that to be true.
+ */
+ private static boolean isPropertyName(String name) {
+ return ((name.length() > 0) && Character.isUpperCase(name.charAt(0))) || ((name.length() > 1) && Character.isUpperCase(name.charAt(1)));
+ }
+
+ /**
+ * Returns true if the name of the method specified and the number of arguments make it a javabean property
+ *
+ * @param name True if its a Javabean property
+ * @param args The arguments
+ * @return True if it is a javabean property method
+ */
+ private boolean isGetter(String name, CachedClass[] args) {
+ if (name == null || name.length() == 0 || args == null) return false;
+ if (args.length != 0) return false;
+
+ if (name.startsWith("get")) {
+ name = name.substring(3);
+ return isPropertyName(name);
+ } else if (name.startsWith("is")) {
+ name = name.substring(2);
+ return isPropertyName(name);
+ }
+ return false;
+ }
+
+ /**
+ * Returns a property name equivalent for the given getter name or null if it is not a getter
+ *
+ * @param getterName The getter name
+ * @return The property name equivalent
+ */
+ private String getPropertyForGetter(String getterName) {
+ if (getterName == null || getterName.length() == 0) return null;
+
+ if (getterName.startsWith("get")) {
+ String prop = getterName.substring(3);
+ return MetaClassHelper.convertPropertyName(prop);
+ } else if (getterName.startsWith("is")) {
+ String prop = getterName.substring(2);
+ return MetaClassHelper.convertPropertyName(prop);
+ }
+ return null;
+ }
+
+ /**
+ * Returns a property name equivalent for the given setter name or null if it is not a getter
+ *
+ * @param setterName The setter name
+ * @return The property name equivalent
+ */
+ public String getPropertyForSetter(String setterName) {
+ if (setterName == null || setterName.length() == 0) return null;
+
+ if (setterName.startsWith("set")) {
+ String prop = setterName.substring(3);
+ return MetaClassHelper.convertPropertyName(prop);
+ }
+ return null;
+ }
+
+ public boolean isSetter(String name, CachedClass[] args) {
+ if (name == null || name.length() == 0 || args == null) return false;
+
+ if (name.startsWith("set")) {
+ if (args.length != 1) return false;
+ name = name.substring(3);
+ return isPropertyName(name);
+ }
+
+ return false;
+ }
+
+ public CallSite createPojoCallSite(CallSite site, Object receiver, Object[] args) {
+ if (invokeMethodMethod != null)
+ return new PojoMetaClassSite(site, this);
+
+ return super.createPojoCallSite(site, receiver, args);
+ }
+
+ public CallSite createStaticSite(CallSite site, Object[] args) {
+ if (invokeStaticMethodMethod != null)
+ return new StaticMetaClassSite(site, this);
+
+ return super.createStaticSite(site, args);
+ }
+
+ public boolean hasCustomStaticInvokeMethod() {return invokeStaticMethodMethod!=null; }
+
+ public CallSite createPogoCallSite(CallSite site, Object[] args) {
+ if (invokeMethodMethod != null)
+ return new PogoMetaClassSite(site, this);
+ return super.createPogoCallSite(site, args);
+ }
+
+ public CallSite createPogoCallCurrentSite(CallSite site, Class sender, String name, Object[] args) {
+ if (invokeMethodMethod != null)
+ return new PogoMetaClassSite(site, this);
+ return super.createPogoCallCurrentSite(site, sender, args);
+ }
+
+ @Override
+ public MetaMethod retrieveConstructor(Object[] args) {
+ Class[] params = MetaClassHelper.convertToTypeArray(args);
+ MetaMethod method = pickMethod(GROOVY_CONSTRUCTOR, params);
+ if (method!=null) return method;
+ return super.retrieveConstructor(args);
+ }
+
+ public CallSite createConstructorSite(CallSite site, Object[] args) {
+ Class[] params = MetaClassHelper.convertToTypeArray(args);
+ MetaMethod method = pickMethod(GROOVY_CONSTRUCTOR, params);
+ if (method != null && method.getParameterTypes().length == args.length) {
+ if (method.getDeclaringClass().getTheClass().equals(getTheClass())) {
+ return new ConstructorMetaMethodSite(site, this, method, params);
+ }
+ }
+
+ return super.createConstructorSite(site, args);
+ }
+
+ private class SubClassDefiningClosure extends GroovyObjectSupport {
+ private final Class klazz;
+
+ public SubClassDefiningClosure(Class klazz) {
+ this.klazz = klazz;
+ }
+
+ public Object invokeMethod(String name, Object obj) {
+ if (obj instanceof Object[]) {
+ Object args[] = (Object[]) obj;
+ if (args.length == 1 && args[0] instanceof Closure) {
+ registerSubclassInstanceMethod(name, klazz, (Closure) args[0]);
+ return null;
+ }
+ }
+
+ throw new MissingMethodException(name, getClass(), new Object[]{obj});
+ }
+ }
+
+ private class DefiningClosure extends GroovyObjectSupport {
+ boolean definition = true;
+
+ public void mixin(Class category) {
+ mixin(Collections.singletonList(category));
+ }
+
+ public void mixin(List categories) {
+ DefaultGroovyMethods.mixin(ExpandoMetaClass.this, categories);
+ }
+
+ public void mixin(Class[] categories) {
+ DefaultGroovyMethods.mixin(ExpandoMetaClass.this, categories);
+ }
+
+ public void define(Class subClass, Closure closure) {
+ final SubClassDefiningClosure definer = new SubClassDefiningClosure(subClass);
+ closure.setDelegate(definer);
+ closure.setResolveStrategy(Closure.DELEGATE_FIRST);
+ closure.call((Object)null);
+ }
+
+ public Object invokeMethod(String name, Object obj) {
+ try {
+ return getMetaClass().invokeMethod(this, name, obj);
+ }
+ catch (MissingMethodException mme) {
+ if (obj instanceof Object[]) {
+ if (STATIC_QUALIFIER.equals(name)) {
+ final StaticDefiningClosure staticDef = new StaticDefiningClosure();
+ Closure c = (Closure) ((Object[]) obj)[0];
+ c.setDelegate(staticDef);
+ c.setResolveStrategy(Closure.DELEGATE_ONLY);
+ c.call((Object)null);
+ return null;
+ }
+ Object args[] = (Object[]) obj;
+ if (args.length == 1 && args[0] instanceof Closure) {
+ registerInstanceMethod(name, (Closure) args[0]);
+ } else if (args.length == 2 && args[0] instanceof Class && args[1] instanceof Closure)
+ registerSubclassInstanceMethod(name, (Class) args[0], (Closure) args[1]);
+ else
+ ExpandoMetaClass.this.setProperty(name, ((Object[]) obj)[0]);
+
+ return null;
+ }
+
+ throw mme;
+ }
+ }
+
+ public void setProperty(String property, Object newValue) {
+ ExpandoMetaClass.this.setProperty(property, newValue);
+ }
+
+ public Object getProperty(String property) {
+ if (STATIC_QUALIFIER.equals(property))
+ return new StaticDefiningClosure();
+
+ if (definition)
+ return new ExpandoMetaProperty(property);
+ else
+ throw new MissingPropertyException(property, getClass());
+ }
+ }
+
+ private class StaticDefiningClosure extends ExpandoMetaProperty {
+ protected StaticDefiningClosure() {
+ super(STATIC_QUALIFIER, true);
+ }
+
+ public Object invokeMethod(String name, Object obj) {
+ if (obj instanceof Object[]) {
+ final Object[] args = (Object[]) obj;
+ if (args.length == 1 && args[0] instanceof Closure) {
+ registerStaticMethod(name, (Closure) args[0]);
+ return null;
+ }
+ }
+
+ throw new MissingMethodException(name, getClass(), obj instanceof Object[] ? (Object[]) obj : new Object[]{obj});
+ }
+ }
+
+ private static class MixedInAccessor {
+ private final Object object;
+ private final Set<MixinInMetaClass> mixinClasses;
+
+ public MixedInAccessor(Object object, Set<MixinInMetaClass> mixinClasses) {
+ this.object = object;
+ this.mixinClasses = mixinClasses;
+ }
+
+ public Object getAt(Class key) {
+ if (key.isAssignableFrom(object.getClass())) {
+ return new GroovyObjectSupport() {
+ {
+ final MetaClass ownMetaClass = InvokerHelper.getMetaClass(object.getClass());
+ setMetaClass(new OwnedMetaClass(ownMetaClass) {
+ protected Object getOwner() {
+ return object;
+ }
+
+ protected MetaClass getOwnerMetaClass(Object owner) {
+ return getAdaptee();
+ }
+ });
+ }
+ };
+ }
+
+ for (final MixinInMetaClass mixin : mixinClasses) {
+ if (key.isAssignableFrom(mixin.getMixinClass().getTheClass())) {
+ return new GroovyObjectSupport() {
+ {
+ final Object mixedInInstance = mixin.getMixinInstance(object);
+ setMetaClass(new OwnedMetaClass(InvokerHelper.getMetaClass(mixedInInstance)) {
+ @Override
+ protected Object getOwner() {
+ return mixedInInstance;
+ }
+
+ @Override
+ protected MetaClass getOwnerMetaClass(Object owner) {
+ return ((MixedInMetaClass) getAdaptee()).getAdaptee();
+ }
+ });
+ }
+ };
+ }
+ }
+
+ throw new RuntimeException("Class " + key + " isn't mixed in " + object.getClass());
+ }
+
+ public void putAt(Class key, Object value) {
+ for (MixinInMetaClass mixin : mixinClasses)
+ if (mixin.getMixinClass().getTheClass() == key) {
+ mixin.setMixinInstance(object, value);
+ return;
+ }
+
+ throw new RuntimeException("Class " + key + " isn't mixed in " + object.getClass());
+ }
+ }
+}
http://git-wip-us.apache.org/repos/asf/groovy/blob/10110145/src/main/groovy/groovy/lang/ExpandoMetaClassCreationHandle.java
----------------------------------------------------------------------
diff --git a/src/main/groovy/groovy/lang/ExpandoMetaClassCreationHandle.java b/src/main/groovy/groovy/lang/ExpandoMetaClassCreationHandle.java
new file mode 100644
index 0000000..6e411a5
--- /dev/null
+++ b/src/main/groovy/groovy/lang/ExpandoMetaClassCreationHandle.java
@@ -0,0 +1,95 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package groovy.lang;
+
+import groovy.lang.MetaClassRegistry.MetaClassCreationHandle;
+import org.codehaus.groovy.reflection.ClassInfo;
+
+/**
+ * <p>A handle for the MetaClassRegistry that changes all classes loaded into the Grails VM
+ * to use ExpandoMetaClass instances
+ *
+ * <p>The handle should be registered with the Groovy runtime <strong>before</strong> Groovy loads, for example
+ * in your main method.
+ *
+ * <code>GroovySystem.metaClassRegistry.metaClassCreationHandle = new ExpandoMetaClassCreationHandle()</code>
+ *
+ * @see groovy.lang.MetaClassRegistry
+ * @see groovy.lang.MetaClassRegistry.MetaClassCreationHandle
+ * @see org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl#setMetaClassCreationHandle(groovy.lang.MetaClassRegistry.MetaClassCreationHandle)
+ *
+ * @author Graeme Rocher
+ * @since 1.5
+ */
+public class ExpandoMetaClassCreationHandle extends MetaClassCreationHandle {
+
+ public static final ExpandoMetaClassCreationHandle instance = new ExpandoMetaClassCreationHandle();
+
+ /* (non-Javadoc)
+ * @see groovy.lang.MetaClassRegistry.MetaClassCreationHandle#create(java.lang.Class, groovy.lang.MetaClassRegistry)
+ */
+ protected MetaClass createNormalMetaClass(Class theClass, MetaClassRegistry registry) {
+ if(theClass != ExpandoMetaClass.class) {
+ return new ExpandoMetaClass(theClass, true, true);
+ }
+ else {
+ return super.createNormalMetaClass(theClass, registry);
+ }
+ }
+
+ /**
+ * Registers a modified ExpandoMetaClass with the creation handle
+ *
+ * @param emc The EMC
+ */
+ public void registerModifiedMetaClass(ExpandoMetaClass emc) {
+ final Class klazz = emc.getJavaClass();
+ GroovySystem.getMetaClassRegistry().setMetaClass(klazz,emc);
+ }
+
+ public boolean hasModifiedMetaClass(ExpandoMetaClass emc) {
+ return emc.getClassInfo().getModifiedExpando() != null;
+ }
+
+ /**
+ * <p>Enables the ExpandoMetaClassCreationHandle with the registry
+ *
+ * <code>ExpandoMetaClassCreationHandle.enable();</code>
+ *
+ */
+ public static void enable() {
+ final MetaClassRegistry metaClassRegistry = GroovySystem.getMetaClassRegistry();
+ synchronized (metaClassRegistry) {
+ if (metaClassRegistry.getMetaClassCreationHandler() != instance) {
+ ClassInfo.clearModifiedExpandos();
+ metaClassRegistry.setMetaClassCreationHandle(instance);
+ }
+ }
+ }
+
+ public static void disable() {
+ final MetaClassRegistry metaClassRegistry = GroovySystem.getMetaClassRegistry();
+ synchronized (metaClassRegistry) {
+ if (metaClassRegistry.getMetaClassCreationHandler() == instance) {
+ ClassInfo.clearModifiedExpandos();
+ metaClassRegistry.setMetaClassCreationHandle(new MetaClassCreationHandle());
+ }
+ }
+ }
+}
http://git-wip-us.apache.org/repos/asf/groovy/blob/10110145/src/main/groovy/groovy/lang/GString.java
----------------------------------------------------------------------
diff --git a/src/main/groovy/groovy/lang/GString.java b/src/main/groovy/groovy/lang/GString.java
new file mode 100644
index 0000000..8323bf2
--- /dev/null
+++ b/src/main/groovy/groovy/lang/GString.java
@@ -0,0 +1,245 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package groovy.lang;
+
+import org.codehaus.groovy.runtime.GStringImpl;
+import org.codehaus.groovy.runtime.InvokerHelper;
+import org.codehaus.groovy.runtime.StringGroovyMethods;
+
+import java.io.IOException;
+import java.io.Serializable;
+import java.io.StringWriter;
+import java.io.UnsupportedEncodingException;
+import java.io.Writer;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.regex.Pattern;
+
+/**
+ * Represents a String which contains embedded values such as "hello there
+ * ${user} how are you?" which can be evaluated lazily. Advanced users can
+ * iterate over the text and values to perform special processing, such as for
+ * performing SQL operations, the values can be substituted for ? and the
+ * actual value objects can be bound to a JDBC statement. The lovely name of
+ * this class was suggested by Jules Gosnell and was such a good idea, I
+ * couldn't resist :)
+ *
+ * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
+ */
+public abstract class GString extends GroovyObjectSupport implements Comparable, CharSequence, Writable, Buildable, Serializable {
+
+ static final long serialVersionUID = -2638020355892246323L;
+
+ /**
+ * A GString containing a single empty String and no values.
+ */
+ public static final GString EMPTY = new GString(new Object[0]) {
+ @Override
+ public String[] getStrings() {
+ return new String[]{""};
+ }
+ };
+ public static final String[] EMPTY_STRING_ARRAY = new String[0];
+ public static final Object[] EMPTY_OBJECT_ARRAY = new Object[0];
+
+ private final Object[] values;
+
+ public GString(Object values) {
+ this.values = (Object[]) values;
+ }
+
+ public GString(Object[] values) {
+ this.values = values;
+ }
+
+ // will be static in an instance
+
+ public abstract String[] getStrings();
+
+ /**
+ * Overloaded to implement duck typing for Strings
+ * so that any method that can't be evaluated on this
+ * object will be forwarded to the toString() object instead.
+ */
+ @Override
+ public Object invokeMethod(String name, Object args) {
+ try {
+ return super.invokeMethod(name, args);
+ }
+ catch (MissingMethodException e) {
+ // lets try invoke the method on the real String
+ return InvokerHelper.invokeMethod(toString(), name, args);
+ }
+ }
+
+ public Object[] getValues() {
+ return values;
+ }
+
+ public GString plus(GString that) {
+ List<String> stringList = new ArrayList<String>(Arrays.asList(getStrings()));
+ List<Object> valueList = new ArrayList<Object>(Arrays.asList(getValues()));
+
+ List<String> thatStrings = Arrays.asList(that.getStrings());
+
+ int stringListSize = stringList.size();
+ if (stringListSize > valueList.size()) {
+ thatStrings = new ArrayList<String>(thatStrings);
+ // merge onto end of previous GString to avoid an empty bridging value
+ int lastIndexOfStringList = stringListSize - 1;
+ String s = stringList.get(lastIndexOfStringList);
+ s += thatStrings.remove(0);
+ stringList.set(lastIndexOfStringList, s);
+ }
+
+ stringList.addAll(thatStrings);
+ valueList.addAll(Arrays.asList(that.getValues()));
+
+ final String[] newStrings = stringList.toArray(EMPTY_STRING_ARRAY);
+ final Object[] newValues = valueList.toArray();
+
+ return new GStringImpl(newValues, newStrings);
+ }
+
+ public GString plus(String that) {
+ return plus(new GStringImpl(EMPTY_OBJECT_ARRAY, new String[] { that }));
+ }
+
+ public int getValueCount() {
+ return values.length;
+ }
+
+ public Object getValue(int idx) {
+ return values[idx];
+ }
+
+ @Override
+ public String toString() {
+ StringWriter buffer = new StringWriter();
+ try {
+ writeTo(buffer);
+ }
+ catch (IOException e) {
+ throw new StringWriterIOException(e);
+ }
+ return buffer.toString();
+ }
+
+ @Override
+ public Writer writeTo(Writer out) throws IOException {
+ String[] s = getStrings();
+ int numberOfValues = values.length;
+ for (int i = 0, size = s.length; i < size; i++) {
+ out.write(s[i]);
+ if (i < numberOfValues) {
+ final Object value = values[i];
+
+ if (value instanceof Closure) {
+ final Closure c = (Closure) value;
+
+ if (c.getMaximumNumberOfParameters() == 0) {
+ InvokerHelper.write(out, c.call());
+ } else if (c.getMaximumNumberOfParameters() == 1) {
+ c.call(out);
+ } else {
+ throw new GroovyRuntimeException("Trying to evaluate a GString containing a Closure taking "
+ + c.getMaximumNumberOfParameters() + " parameters");
+ }
+ } else {
+ InvokerHelper.write(out, value);
+ }
+ }
+ }
+ return out;
+ }
+
+ /* (non-Javadoc)
+ * @see groovy.lang.Buildable#build(groovy.lang.GroovyObject)
+ */
+
+ @Override
+ public void build(final GroovyObject builder) {
+ final String[] s = getStrings();
+ final int numberOfValues = values.length;
+
+ for (int i = 0, size = s.length; i < size; i++) {
+ builder.getProperty("mkp");
+ builder.invokeMethod("yield", new Object[]{s[i]});
+ if (i < numberOfValues) {
+ builder.getProperty("mkp");
+ builder.invokeMethod("yield", new Object[]{values[i]});
+ }
+ }
+ }
+
+ @Override
+ public int hashCode() {
+ return 37 + toString().hashCode();
+ }
+
+ @Override
+ public boolean equals(Object that) {
+ if (that instanceof GString) {
+ return equals((GString) that);
+ }
+ return false;
+ }
+
+ public boolean equals(GString that) {
+ return toString().equals(that.toString());
+ }
+
+ @Override
+ public int compareTo(Object that) {
+ return toString().compareTo(that.toString());
+ }
+
+ @Override
+ public char charAt(int index) {
+ return toString().charAt(index);
+ }
+
+ @Override
+ public int length() {
+ return toString().length();
+ }
+
+ @Override
+ public CharSequence subSequence(int start, int end) {
+ return toString().subSequence(start, end);
+ }
+
+ /**
+ * Turns a String into a regular expression pattern
+ *
+ * @return the regular expression pattern
+ */
+ public Pattern negate() {
+ return StringGroovyMethods.bitwiseNegate(toString());
+ }
+
+ public byte[] getBytes() {
+ return toString().getBytes();
+ }
+
+ public byte[] getBytes(String charset) throws UnsupportedEncodingException {
+ return toString().getBytes(charset);
+ }
+}
http://git-wip-us.apache.org/repos/asf/groovy/blob/10110145/src/main/groovy/groovy/lang/GeneratedGroovyProxy.java
----------------------------------------------------------------------
diff --git a/src/main/groovy/groovy/lang/GeneratedGroovyProxy.java b/src/main/groovy/groovy/lang/GeneratedGroovyProxy.java
new file mode 100644
index 0000000..55b25b5
--- /dev/null
+++ b/src/main/groovy/groovy/lang/GeneratedGroovyProxy.java
@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package groovy.lang;
+
+/**
+ * An interface implemented by some Groovy proxies which gives access to the proxied object. In particular, dynamically
+ * generated proxies that implement traits will implement this interface in order to give access to the proxied
+ * instance.
+ *
+ * @author Cedric Champeau
+ * @since 2.3.0
+ */
+public interface GeneratedGroovyProxy {
+ /**
+ * @return the proxy target.
+ */
+ Object getProxyTarget();
+}
http://git-wip-us.apache.org/repos/asf/groovy/blob/10110145/src/main/groovy/groovy/lang/Grab.java
----------------------------------------------------------------------
diff --git a/src/main/groovy/groovy/lang/Grab.java b/src/main/groovy/groovy/lang/Grab.java
new file mode 100644
index 0000000..89be8b3
--- /dev/null
+++ b/src/main/groovy/groovy/lang/Grab.java
@@ -0,0 +1,143 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package groovy.lang;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Used to grab the referenced artifact and its dependencies and make it available on the Classpath.
+ * <p>
+ * Some examples:
+ * <pre>
+ * {@code @Grab}(group='commons-lang', module='commons-lang', version='2.4')
+ * import org.apache.commons.lang.WordUtils
+ * println "Hello ${WordUtils.capitalize('world')}"
+ * </pre>
+ * Or using the compact Gradle-inspired syntax:
+ * <pre>
+ * {@code @Grab}('commons-lang:commons-lang:2.4')
+ * import org.apache.commons.lang.WordUtils
+ * println "Hello ${WordUtils.capitalize('world')}"
+ * </pre>
+ * or the same thing again using the Ivy-inspired syntax variant:
+ * <pre>
+ * {@code @Grab}('commons-lang#commons-lang;2.4')
+ * import org.apache.commons.lang.WordUtils
+ * println "Hello ${WordUtils.capitalize('world')}"
+ * </pre>
+ * Further information such as where artifacts are downloaded to, how to add additional resolvers,
+ * how to customise artifact resolution etc., can be found on the Grape documentation page:
+ * <a href="http://groovy-lang.org/grape.html">http://groovy-lang.org/grape.html</a>.
+ */
+@Retention(RetentionPolicy.SOURCE)
+@Target({
+ ElementType.CONSTRUCTOR,
+ ElementType.FIELD,
+ ElementType.LOCAL_VARIABLE,
+ ElementType.METHOD,
+ ElementType.PARAMETER,
+ ElementType.TYPE})
+public @interface Grab {
+ /**
+ * The organisation or group, e.g.: "org.apache.ant". A non-empty value is required unless value() is used.
+ */
+ String group() default "";
+
+ /**
+ * The module or artifact, e.g.: "ant-junit". A non-empty value is required unless value() is used.
+ */
+ String module() default "";
+
+ /**
+ * The revision or version, e.g.: "1.7.1". A non-empty value is required unless value() is used.
+ */
+ String version() default "";
+
+ /**
+ * The classifier if in use, e.g.: "jdk14"
+ */
+ String classifier() default "";
+
+ /**
+ * Defaults to {@code true} but set to {@code false} if you don't want transitive dependencies also to be downloaded.
+ * You may then need additional {@code @Grab} statements for any required dependencies.
+ */
+ boolean transitive() default true;
+
+ /**
+ * Defaults to {@code false} but set to {@code true} to indicate to the underlying Ivy conflict manager that this
+ * dependency should be forced to the given revision. Otherwise, depending on the conflict manager in play, a later
+ * compatible version might be used instead.
+ */
+ boolean force() default false;
+
+ /**
+ * Defaults to {@code false} but set to {@code true} if the dependency artifacts may change without a corresponding
+ * revision change. Not normally recommended but may be useful for certain kinds of snapshot artifacts.
+ * May reduce the amount of underlying Ivy caching. Proper behavior may be dependent on the resolver in use.
+ */
+ boolean changing() default false;
+
+ /**
+ * The configuration if in use (normally only used by internal ivy repositories).
+ * One or more comma separated values with or without square brackets,
+ * e.g. for hibernate you might have "default,proxool,oscache" or "[default,dbcp,swarmcache]".
+ * This last hibernate example assumes you have set up such configurations in your local Ivy repo
+ * and have changed your grape config (using grapeConfig.xml) or the {@code @GrabConfig} annotation
+ * to point to that repo.
+ */
+ String conf() default "";
+
+ /**
+ * The extension of the artifact (normally safe to leave at default value of "jar" but other values like "zip"
+ * are sometimes useful).
+ */
+ String ext() default "";
+
+ /**
+ * The type of the artifact (normally safe to leave at default value of "jar" but other values like "sources" and "javadoc" are sometimes useful).
+ * But see also the "classifier" attribute which is also sometimes used for "sources" and "javadoc".
+ */
+ String type() default "";
+
+ /**
+ * Allows a more compact convenience form in one of two formats with optional appended attributes.
+ * Must not be used if group(), module() or version() are used.
+ * <p>
+ * You can choose either format but not mix-n-match:<br>
+ * {@code group:module:version:classifier@ext} (where only group and module are required)<br>
+ * {@code group#module;version[confs]} (where only group and module are required and confs,
+ * if used, is one or more comma separated configuration names)<br>
+ * In addition, you can add any valid Ivy attributes at the end of your string value using
+ * semi-colon separated name = value pairs, e.g.:<br>
+ * {@code @Grab('junit:junit:*;transitive=false')}<br>
+ * {@code @Grab('group=junit;module=junit;version=4.8.2;classifier=javadoc')}<br>
+ */
+ String value() default "";
+
+ /**
+ * By default, when a {@code @Grab} annotation is used, a {@code Grape.grab()} call is added
+ * to the static initializers of the class the annotatable node appears in.
+ * If you wish to disable this, add {@code initClass=false} to the annotation.
+ */
+ boolean initClass() default true;
+}
http://git-wip-us.apache.org/repos/asf/groovy/blob/10110145/src/main/groovy/groovy/lang/GrabConfig.java
----------------------------------------------------------------------
diff --git a/src/main/groovy/groovy/lang/GrabConfig.java b/src/main/groovy/groovy/lang/GrabConfig.java
new file mode 100644
index 0000000..e6b8980
--- /dev/null
+++ b/src/main/groovy/groovy/lang/GrabConfig.java
@@ -0,0 +1,117 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package groovy.lang;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Used to modify the grape configuration for grab requests.
+ * <p>
+ * An example involving databases:
+ * <pre>
+ * {@code @Grab}('mysql:mysql-connector-java:5.1.6'),
+ * {@code @GrabConfig}(systemClassLoader=true)
+ * import groovy.sql.Sql
+ *
+ * def sql=Sql.newInstance("jdbc:mysql://localhost/test", "user", "password", "com.mysql.jdbc.Driver")
+ * println sql.firstRow('SELECT * FROM INFORMATION_SCHEMA.COLUMNS')
+ * </pre>
+ * Another example involving XStream:
+ * <pre>
+ * {@code @Grab}('com.thoughtworks.xstream:xstream:1.4.9'),
+ * {@code @Grab}('xpp3:xpp3_min:1.1.4c'),
+ * {@code @GrabConfig}(systemClassLoader=true, initContextClassLoader=true)
+ * import com.thoughtworks.xstream.*
+ *
+ * class Staff {
+ * String firstname, lastname, position
+ * }
+ *
+ * def xstream = new XStream()
+ * def john1 = new Staff(firstname:'John',
+ * lastname:'Connor',
+ * position:'Resistance Leader')
+ *
+ * // write out to XML file
+ * new File("john.xml").withOutputStream { out ->
+ * xstream.toXML(john1, out)
+ * }
+ *
+ * // now read back in
+ * def john2
+ * new File("john.xml").withInputStream { ins ->
+ * john2 = xstream.fromXML(ins)
+ * }
+ *
+ * println john2.dump()
+ * </pre>
+ * <p>
+ * Further information about customising grape behavior can be found on the Grape documentation page:
+ * <a href="http://groovy-lang.org/grape.html">http://groovy-lang.org/grape.html</a>.
+ */
+@Retention(RetentionPolicy.SOURCE)
+@Target({
+ ElementType.CONSTRUCTOR,
+ ElementType.FIELD,
+ ElementType.LOCAL_VARIABLE,
+ ElementType.METHOD,
+ ElementType.PARAMETER,
+ ElementType.TYPE})
+public @interface GrabConfig {
+ /**
+ * Set to true if you want to use the system classloader when loading the grape.
+ * This is normally only required when a core Java class needs to reference the grabbed
+ * classes, e.g. for a database driver accessed using DriverManager.
+ */
+ boolean systemClassLoader() default false;
+
+ /**
+ * Define any system properties which must be set before invoking the grab - useful for
+ * declaring SSL certificates or proxy settings. Currently, this only affects the generated
+ * class or script. You may need to also set those same properties for the Groovy compiler.
+ * For convenience, a String with comma separated name=value pairs
+ * can be used in addition to an array (using Groovy's literal list notation) of String name=value items.
+ * The single String shorthand form can't be used if value part of a property contains a comma.
+ *
+ * @since 2.4.5
+ */
+ String[] systemProperties() default "";
+
+ /**
+ * Set to true if you want the context classloader to be initialised to the classloader
+ * of the current class or script. This is useful for libraries or frameworks that assume
+ * that the context classloader has been set. But be careful when using this flag as your
+ * script or class might behave differently when called directly (from the command line or
+ * from an IDE) versus when called from within a container, e.g. a web container or a JEE container.
+ */
+ boolean initContextClassLoader() default false;
+
+ /**
+ * Set to false if you want to disable automatic downloading of locally missing jars.
+ */
+ boolean autoDownload() default true;
+
+ /**
+ * Set to true if you want to disable checksum checking.
+ */
+ boolean disableChecksums() default false;
+}
\ No newline at end of file