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Posted to commits@tuscany.apache.org by rf...@apache.org on 2009/08/07 20:47:24 UTC
svn commit: r802142 - in /tuscany/java/sca/modules/common-java: ./ META-INF/
src/ src/main/ src/main/java/ src/main/java/org/ src/main/java/org/apache/
src/main/java/org/apache/tuscany/ src/main/java/org/apache/tuscany/sca/
src/main/java/org/apache/tus...
Author: rfeng
Date: Fri Aug 7 18:47:24 2009
New Revision: 802142
URL: http://svn.apache.org/viewvc?rev=802142&view=rev
Log:
Start to move Java related utilities into the common-java module
Added:
tuscany/java/sca/modules/common-java/ (with props)
tuscany/java/sca/modules/common-java/META-INF/
tuscany/java/sca/modules/common-java/META-INF/MANIFEST.MF
tuscany/java/sca/modules/common-java/pom.xml (with props)
tuscany/java/sca/modules/common-java/src/
tuscany/java/sca/modules/common-java/src/main/
tuscany/java/sca/modules/common-java/src/main/java/
tuscany/java/sca/modules/common-java/src/main/java/org/
tuscany/java/sca/modules/common-java/src/main/java/org/apache/
tuscany/java/sca/modules/common-java/src/main/java/org/apache/tuscany/
tuscany/java/sca/modules/common-java/src/main/java/org/apache/tuscany/sca/
tuscany/java/sca/modules/common-java/src/main/java/org/apache/tuscany/sca/common/
tuscany/java/sca/modules/common-java/src/main/java/org/apache/tuscany/sca/common/java/
tuscany/java/sca/modules/common-java/src/main/java/org/apache/tuscany/sca/common/java/reflection/
tuscany/java/sca/modules/common-java/src/main/java/org/apache/tuscany/sca/common/java/reflection/JavaIntrospectionHelper.java (with props)
tuscany/java/sca/modules/common-java/src/main/resources/
tuscany/java/sca/modules/common-java/src/test/
tuscany/java/sca/modules/common-java/src/test/java/
tuscany/java/sca/modules/common-java/src/test/java/org/
tuscany/java/sca/modules/common-java/src/test/java/org/apache/
tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/
tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/
tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/
tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/
tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/
tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/JavaIntrospectionHelperTestCase.java (with props)
tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/SubTestImpl.java (with props)
tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/Test1.java (with props)
tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/Test2.java (with props)
tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/TestImpl.java (with props)
Propchange: tuscany/java/sca/modules/common-java/
------------------------------------------------------------------------------
--- svn:ignore (added)
+++ svn:ignore Fri Aug 7 18:47:24 2009
@@ -0,0 +1,13 @@
+target
+*.iws
+*.ipr
+*.iml
+*.log*
+.project
+.classpath
+junit*.properties
+.settings
+.deployables
+.wtpmodules
+.externalToolBuilders
+maven-eclipse.xml
Added: tuscany/java/sca/modules/common-java/META-INF/MANIFEST.MF
URL: http://svn.apache.org/viewvc/tuscany/java/sca/modules/common-java/META-INF/MANIFEST.MF?rev=802142&view=auto
==============================================================================
--- tuscany/java/sca/modules/common-java/META-INF/MANIFEST.MF (added)
+++ tuscany/java/sca/modules/common-java/META-INF/MANIFEST.MF Fri Aug 7 18:47:24 2009
@@ -0,0 +1,19 @@
+Manifest-Version: 1.0
+Tool: Bnd-0.0.255
+Bundle-Name: Apache Tuscany SCA Common Java
+Created-By: 1.6.0_07 (Sun Microsystems Inc.)
+Bundle-Vendor: The Apache Software Foundation
+Bundle-Version: 2.0.0
+Bnd-LastModified: 1225397108125
+Bundle-ManifestVersion: 2
+Bundle-License: http://www.apache.org/licenses/LICENSE-2.0.txt
+Bundle-Description: Apache Tuscany SCA Common Java
+Import-Package: org.apache.tuscany.sca.core;version="2.0.0",
+ org.apache.tuscany.sca.extensibility;version="2.0.0",
+ org.oasisopen.sca;version="2.0.0",
+ org.oasisopen.sca.annotation;version="2.0.0"
+Bundle-SymbolicName: org.apache.tuscany.sca.common.java
+Bundle-DocURL: http://www.apache.org/
+Export-Package: org.apache.tuscany.sca.common.java.reflection;version="2.0.0"
+
+
Added: tuscany/java/sca/modules/common-java/pom.xml
URL: http://svn.apache.org/viewvc/tuscany/java/sca/modules/common-java/pom.xml?rev=802142&view=auto
==============================================================================
--- tuscany/java/sca/modules/common-java/pom.xml (added)
+++ tuscany/java/sca/modules/common-java/pom.xml Fri Aug 7 18:47:24 2009
@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * 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.
+-->
+<project>
+ <modelVersion>4.0.0</modelVersion>
+ <parent>
+ <groupId>org.apache.tuscany.sca</groupId>
+ <artifactId>tuscany-modules</artifactId>
+ <version>2.0-SNAPSHOT</version>
+ <relativePath>../pom.xml</relativePath>
+ </parent>
+ <artifactId>tuscany-common-java</artifactId>
+ <name>Apache Tuscany SCA Common Java</name>
+
+ <dependencies>
+ <dependency>
+ <groupId>org.apache.tuscany.sca</groupId>
+ <artifactId>tuscany-extensibility</artifactId>
+ <version>2.0-SNAPSHOT</version>
+ </dependency>
+
+ <dependency>
+ <groupId>org.apache.tuscany.sca</groupId>
+ <artifactId>tuscany-sca-api</artifactId>
+ <version>2.0-SNAPSHOT</version>
+ </dependency>
+
+ </dependencies>
+
+ <profiles>
+ <profile>
+ <id>jdk15</id>
+ <activation>
+ <jdk>1.5</jdk>
+ </activation>
+ </profile>
+ </profiles>
+
+</project>
Propchange: tuscany/java/sca/modules/common-java/pom.xml
------------------------------------------------------------------------------
svn:eol-style = native
Propchange: tuscany/java/sca/modules/common-java/pom.xml
------------------------------------------------------------------------------
svn:keywords = Rev Date
Added: tuscany/java/sca/modules/common-java/src/main/java/org/apache/tuscany/sca/common/java/reflection/JavaIntrospectionHelper.java
URL: http://svn.apache.org/viewvc/tuscany/java/sca/modules/common-java/src/main/java/org/apache/tuscany/sca/common/java/reflection/JavaIntrospectionHelper.java?rev=802142&view=auto
==============================================================================
--- tuscany/java/sca/modules/common-java/src/main/java/org/apache/tuscany/sca/common/java/reflection/JavaIntrospectionHelper.java (added)
+++ tuscany/java/sca/modules/common-java/src/main/java/org/apache/tuscany/sca/common/java/reflection/JavaIntrospectionHelper.java Fri Aug 7 18:47:24 2009
@@ -0,0 +1,586 @@
+/*
+ * 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 org.apache.tuscany.sca.common.java.reflection;
+
+import java.beans.Introspector;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.GenericArrayType;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.lang.reflect.TypeVariable;
+import java.lang.reflect.WildcardType;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.logging.Logger;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.oasisopen.sca.ServiceReference;
+
+/**
+ * Implements various reflection-related operations
+ *
+ * @version $Rev$ $Date$
+ */
+public final class JavaIntrospectionHelper {
+ private static final Logger logger = Logger.getLogger(JavaIntrospectionHelper.class.getName());
+ private static final Class<?>[] EMPTY_CLASS_ARRY = new Class[0];
+
+ private ExtensionPointRegistry registry;
+
+ public JavaIntrospectionHelper(ExtensionPointRegistry registry) {
+ this.registry = registry;
+ }
+
+ public static JavaIntrospectionHelper getInstance(ExtensionPointRegistry registry) {
+ UtilityExtensionPoint utilities = registry.getExtensionPoint(UtilityExtensionPoint.class);
+ return utilities.getUtility(JavaIntrospectionHelper.class);
+ }
+
+ private static boolean matches(int modifiers, int include, int exclude) {
+ if (include != -1) {
+ if ((modifiers & include) == 0) {
+ return false;
+ }
+ }
+ if (exclude != -1) {
+ if ((modifiers & exclude) != 0) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Recursively evaluates the type hierarchy to return all fields that are
+ * public or protected
+ * @param clazz The java class
+ * @param fields The set that collects all fields
+ * @param include The modifiers to be included
+ * @param exclude The modifiers to be excluded
+ * @return The set that collects all matched fields
+ */
+ private static Set<Field> getAllFields(Class<?> clazz, Set<Field> fields, int include, int exclude) {
+ if (clazz == null || clazz.isArray() || Object.class.equals(clazz)) {
+ return fields;
+ }
+ fields = getAllFields(clazz.getSuperclass(), fields, include, exclude);
+ Field[] declaredFields = clazz.getDeclaredFields();
+ for (final Field field : declaredFields) {
+ int modifiers = field.getModifiers();
+ if (matches(modifiers, include, exclude)) {
+ // Allow privileged access to set accessibility. Requires ReflectPermission
+ // in security policy.
+ AccessController.doPrivileged(new PrivilegedAction<Object>() {
+ public Object run() {
+ field.setAccessible(true); // ignore Java accessibility
+ return null;
+ }
+ });
+ fields.add(field);
+ }
+ }
+ return fields;
+ }
+
+ /**
+ * @param cls
+ * @return
+ */
+ public Set<Field> getAllNonStaticOrFinalFields(Class<?> cls) {
+ Set<Field> fields = new HashSet<Field>();
+ return getAllFields(cls, fields, -1, Modifier.STATIC | Modifier.FINAL);
+ }
+
+ /**
+ * @param cls
+ * @return
+ */
+ public Set<Method> getAllNonStaticMethods(Class<?> cls) {
+ Set<Method> methods = new HashSet<Method>();
+ return getAllUniqueMethods(cls, methods, -1, Modifier.STATIC);
+ }
+
+ /**
+ * Recursively evaluates the type hierarchy to return all unique methods
+ */
+ private static Set<Method> getAllUniqueMethods(Class<?> pClass, Set<Method> methods, int include, int exclude) {
+ if (pClass == null || pClass.isArray() || Object.class.equals(pClass)) {
+ return methods;
+ }
+ // we first evaluate methods of the subclass and then move to the parent
+ Method[] declaredMethods = pClass.getDeclaredMethods();
+ for (final Method declaredMethod : declaredMethods) {
+ int modifiers = declaredMethod.getModifiers();
+ if (!matches(modifiers, include, exclude)) {
+ continue;
+ }
+ if (methods.size() == 0) {
+ methods.add(declaredMethod);
+ } else {
+ List<Method> temp = new ArrayList<Method>();
+ boolean matched = false;
+ for (Method method : methods) {
+ // only add if not already in the set from a superclass (i.e.
+ // the method is not overridden)
+ if (exactMethodMatch(declaredMethod, method)) {
+ matched = true;
+ break;
+ }
+ }
+ if (!matched) {
+ // Allow privileged access to set accessibility. Requires ReflectPermission
+ // in security policy.
+ AccessController.doPrivileged(new PrivilegedAction<Object>() {
+ public Object run() {
+ declaredMethod.setAccessible(true);
+ return null;
+ }
+ });
+ temp.add(declaredMethod);
+ }
+ methods.addAll(temp);
+ temp.clear();
+ }
+ }
+ // evaluate class hierarchy - this is done last to track inherited
+ // methods
+ methods = getAllUniqueMethods(pClass.getSuperclass(), methods, include, exclude);
+ return methods;
+ }
+
+ /**
+ * Finds the closest matching field with the given name, that is, a field of
+ * the exact specified type or, alternately, of a supertype.
+ *
+ * @param name the name of the field
+ * @param type the field type
+ * @param fields the collection of fields to search
+ * @return the matching field or null if not found
+ */
+ public static Field findClosestMatchingField(String name, Class type, Set<Field> fields) {
+ Field candidate = null;
+ for (Field field : fields) {
+ if (field.getName().equals(name)) {
+ if (field.getType().equals(type)) {
+ return field; // exact match
+ } else if (field.getType().isAssignableFrom(type) || (field.getType().isPrimitive() && primitiveAssignable(field
+ .getType(),
+ type))) {
+ // We could have the situation where a field parameter is a
+ // primitive and the demarshalled value is
+ // an object counterpart (e.g. Integer and int)
+ // @spec issue
+ // either an interface or super class, so keep a reference
+ // until
+ // we know there are no closer types
+ candidate = field;
+ }
+ }
+ }
+ if (candidate != null) {
+ return candidate;
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Finds the closest matching method with the given name, that is, a method
+ * taking the exact parameter types or, alternately, parameter supertypes.
+ *
+ * @param name the name of the method
+ * @param types the method parameter types
+ * @param methods the collection of methods to search
+ * @return the matching method or null if not found
+ */
+ public static Method findClosestMatchingMethod(String name, Class[] types, Set<Method> methods) {
+ if (types == null) {
+ types = EMPTY_CLASS_ARRY;
+ }
+ Method candidate = null;
+ for (Method method : methods) {
+ if (method.getName().equals(name) && method.getParameterTypes().length == types.length) {
+ Class<?>[] params = method.getParameterTypes();
+ boolean disqualify = false;
+ boolean exactMatch = true;
+ for (int i = 0; i < params.length; i++) {
+ if (!params[i].equals(types[i]) && !params[i].isAssignableFrom(types[i])) {
+ // no match
+ disqualify = true;
+ exactMatch = false;
+ break;
+ } else if (!params[i].equals(types[i]) && params[i].isAssignableFrom(types[i])) {
+ // not exact match
+ exactMatch = false;
+ }
+ }
+ if (disqualify) {
+ continue;
+ } else if (exactMatch) {
+ return method;
+ } else {
+ candidate = method;
+ }
+ }
+ }
+ if (candidate != null) {
+ return candidate;
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Determines if two methods "match" - that is, they have the same method
+ * names and exact parameter types (one is not a supertype of the other)
+ */
+ public static boolean exactMethodMatch(Method method1, Method method2) {
+ if (!method1.getName().equals(method2.getName())) {
+ return false;
+ }
+ Class<?>[] types1 = method1.getParameterTypes();
+ Class<?>[] types2 = method2.getParameterTypes();
+ if (types1.length != types2.length) {
+ return false;
+ }
+ boolean matched = true;
+ for (int i = 0; i < types1.length; i++) {
+ if (types1[i] != types2[i]) {
+ matched = false;
+ break;
+ }
+ }
+ return matched;
+ }
+
+ public static <T> Constructor<T> getDefaultConstructor(Class<T> clazz) throws NoSuchMethodException {
+ return clazz.getConstructor();
+ }
+
+ /**
+ * Returns the simple name of a class - i.e. the class name devoid of its
+ * package qualifier
+ *
+ * @param implClass the implementation class
+ */
+ public static String getBaseName(Class<?> implClass) {
+ return implClass.getSimpleName();
+ }
+
+ public static boolean isImmutable(Class<?> clazz) {
+ return String.class == clazz || clazz.isPrimitive()
+ || Number.class.isAssignableFrom(clazz)
+ || Boolean.class.isAssignableFrom(clazz)
+ || Character.class.isAssignableFrom(clazz)
+ || Byte.class.isAssignableFrom(clazz);
+ }
+
+ /**
+ * Takes a property name and converts it to a getter method name according
+ * to JavaBean conventions. For example, property
+ * <code>foo<code> is returned as <code>getFoo</code>
+ */
+ public static String toGetter(String name) {
+ return "get" + name.toUpperCase().substring(0, 1) + name.substring(1);
+ }
+
+ /**
+ * Takes a setter or getter method name and converts it to a property name
+ * according to JavaBean conventions. For example, <code>setFoo(var)</code>
+ * is returned as property <code>foo<code>
+ */
+ public static String toPropertyName(Method method) {
+ if (isGetter(method) || isSetter(method)) {
+ String name = method.getName();
+ if (name.startsWith("get") || name.startsWith("set")) {
+ return Introspector.decapitalize(name.substring(3));
+ } else {
+ // Starts with is
+ return Introspector.decapitalize(name.substring(2));
+ }
+ } else {
+ throw new IllegalArgumentException("Method is not a setter or getter: " + method);
+ }
+ }
+
+ public static Class<?> getErasure(Type type) {
+ if (type instanceof Class) {
+ return (Class<?>)type;
+ } else if (type instanceof GenericArrayType) {
+ // FIXME: How to deal with the []?
+ GenericArrayType arrayType = (GenericArrayType)type;
+ return getErasure(arrayType.getGenericComponentType());
+ } else if (type instanceof ParameterizedType) {
+ ParameterizedType pType = (ParameterizedType)type;
+ return getErasure(pType.getRawType());
+ } else if (type instanceof WildcardType) {
+ WildcardType wType = (WildcardType)type;
+ Type[] types = wType.getUpperBounds();
+ return getErasure(types[0]);
+ } else if (type instanceof TypeVariable) {
+ TypeVariable<?> var = (TypeVariable<?>)type;
+ Type[] types = var.getBounds();
+ return getErasure(types[0]);
+ }
+ return null;
+ }
+
+ public static Class<?> getBaseType(Class<?> cls, Type genericType) {
+ if (cls.isArray()) {
+ return cls.getComponentType();
+ } else if (Collection.class.isAssignableFrom(cls)) {
+ if (genericType instanceof ParameterizedType) {
+ // Collection<BaseType>
+ ParameterizedType parameterizedType = (ParameterizedType)genericType;
+ Type baseType = parameterizedType.getActualTypeArguments()[0];
+ if (baseType instanceof GenericArrayType) {
+ // Base is array
+ return cls;
+ } else {
+ return getErasure(baseType);
+ }
+ } else {
+ return cls;
+ }
+ } else {
+ return cls;
+ }
+ }
+
+ public static Type getParameterType(Type type) {
+ if (type instanceof ParameterizedType) {
+ // Collection<BaseType>
+ ParameterizedType parameterizedType = (ParameterizedType)type;
+ Type baseType = parameterizedType.getActualTypeArguments()[0];
+ return baseType;
+ } else {
+ return Object.class;
+ }
+ }
+
+ public static Class<?> getBusinessInterface(Class<?> cls, Type callableReferenceType) {
+ if (ServiceReference.class.isAssignableFrom(cls) && callableReferenceType instanceof ParameterizedType) {
+ // Collection<BaseType>
+ ParameterizedType parameterizedType = (ParameterizedType)callableReferenceType;
+ Type baseType = parameterizedType.getActualTypeArguments()[0];
+ if (baseType instanceof GenericArrayType) {
+ // Base is array
+ return cls;
+ } else {
+ return getErasure(baseType);
+ }
+ }
+ return Object.class;
+ }
+
+ /**
+ * Takes a property name and converts it to a setter method name according
+ * to JavaBean conventions. For example, the property
+ * <code>foo<code> is returned as <code>setFoo(var)</code>
+ */
+ public static String toSetter(String name) {
+ return "set" + name.toUpperCase().substring(0, 1) + name.substring(1);
+ }
+
+ /**
+ * Compares a two types, assuming one is a primitive, to determine if the
+ * other is its object counterpart
+ */
+ private static boolean primitiveAssignable(Class<?> memberType, Class<?> param) {
+ if (memberType == Integer.class) {
+ return param == Integer.TYPE;
+ } else if (memberType == Double.class) {
+ return param == Double.TYPE;
+ } else if (memberType == Float.class) {
+ return param == Float.TYPE;
+ } else if (memberType == Short.class) {
+ return param == Short.TYPE;
+ } else if (memberType == Character.class) {
+ return param == Character.TYPE;
+ } else if (memberType == Boolean.class) {
+ return param == Boolean.TYPE;
+ } else if (memberType == Byte.class) {
+ return param == Byte.TYPE;
+ } else if (param == Integer.class) {
+ return memberType == Integer.TYPE;
+ } else if (param == Double.class) {
+ return memberType == Double.TYPE;
+ } else if (param == Float.class) {
+ return memberType == Float.TYPE;
+ } else if (param == Short.class) {
+ return memberType == Short.TYPE;
+ } else if (param == Character.class) {
+ return memberType == Character.TYPE;
+ } else if (param == Boolean.class) {
+ return memberType == Boolean.TYPE;
+ } else if (param == Byte.class) {
+ return memberType == Byte.TYPE;
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * Returns the generic types represented in the given type. Usage as
+ * follows: <code>
+ * JavaIntrospectionHelper.getGenerics(field.getGenericType());
+ * <p/>
+ * JavaIntrospectionHelper.getGenerics(m.getGenericParameterTypes()[0];); </code>
+ *
+ * @return the generic types in order of declaration or an empty array if
+ * the type is not genericized
+ */
+ public static List<? extends Type> getGenerics(Type genericType) {
+ List<Type> classes = new ArrayList<Type>();
+ if (genericType instanceof ParameterizedType) {
+ ParameterizedType ptype = (ParameterizedType)genericType;
+ // get the type arguments
+ Type[] targs = ptype.getActualTypeArguments();
+ for (Type targ : targs) {
+ classes.add(targ);
+ }
+ }
+ return classes;
+ }
+
+ /**
+ * Returns the generic type specified by the class at the given position as
+ * in: <p/> <code> public class Foo<Bar,Baz>{ //.. }
+ * <p/>
+ * JavaIntrospectionHelper.introspectGeneric(Foo.class,1); <code>
+ * <p/>
+ * will return Baz.
+ */
+ public static Class introspectGeneric(Class<?> clazz, int pos) {
+ assert clazz != null : "No class specified";
+ Type type = clazz.getGenericSuperclass();
+ if (type instanceof ParameterizedType) {
+ Type[] args = ((ParameterizedType)type).getActualTypeArguments();
+ if (args.length <= pos) {
+ throw new IllegalArgumentException("Invalid index value for generic class " + clazz.getName());
+ }
+ return (Class)((ParameterizedType)type).getActualTypeArguments()[pos];
+ } else {
+ Type[] interfaces = clazz.getGenericInterfaces();
+ for (Type itype : interfaces) {
+ if (!(itype instanceof ParameterizedType)) {
+ continue;
+ }
+ ParameterizedType interfaceType = (ParameterizedType)itype;
+ return (Class)interfaceType.getActualTypeArguments()[0];
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Returns the set of interfaces implemented by the given class and its
+ * ancestors or a blank set if none
+ */
+ public Set<Class<?>> getAllInterfaces(Class<?> clazz) {
+ Set<Class<?>> implemented = new HashSet<Class<?>>();
+ getAllInterfaces(clazz, implemented);
+ return implemented;
+ }
+
+ private static void getAllInterfaces(Class<?> clazz, Set<Class<?>> implemented) {
+ Class<?>[] interfaces = clazz.getInterfaces();
+ for (Class<?> interfaze : interfaces) {
+ implemented.add(interfaze);
+ }
+ Class<?> superClass = clazz.getSuperclass();
+ // Object has no superclass so check for null
+ if (superClass != null && !superClass.equals(Object.class)) {
+ getAllInterfaces(superClass, implemented);
+ }
+ }
+
+ /**
+ * Test if a method follows the JavaBeans setter pattern
+ * @param method
+ * @return
+ */
+ public static boolean isSetter(Method method) {
+ return (void.class == method.getReturnType() && method.getParameterTypes().length == 1
+ && method.getName().startsWith("set") && method.getName().length() > 3);
+ }
+
+ /**
+ * Test if a method follows the JavaBeans getter pattern
+ * @param method
+ * @return
+ */
+ public static boolean isGetter(Method method) {
+ if (method.getParameterTypes().length == 0) {
+ return false;
+ }
+ Class<?> returnType = method.getReturnType();
+ if (returnType == void.class || returnType == Void.class) {
+ return false;
+ }
+ String name = method.getName();
+ if (returnType == boolean.class)
+ if (name.length() > 2 && name.startsWith("is")) {
+ return true;
+ }
+ return name.length() > 3 && name.startsWith("get");
+ }
+
+ private final static Map<Class<?>, String> signatures = new HashMap<Class<?>, String>();
+ static {
+ signatures.put(boolean.class, "Z");
+ signatures.put(byte.class, "B");
+ signatures.put(char.class, "C");
+ signatures.put(short.class, "S");
+ signatures.put(int.class, "I");
+ signatures.put(long.class, "J");
+ signatures.put(float.class, "F");
+ signatures.put(double.class, "D");
+ };
+
+ public static String getSignature(Class<?> cls) {
+ if (cls.isPrimitive()) {
+ return signatures.get(cls);
+ }
+ if (cls.isArray()) {
+ return "[" + getSignature(cls.getComponentType());
+ }
+ return "L" + cls.getName().replace('.', '/') + ";";
+ }
+
+ public static Class<?> getArrayType(Class<?> componentType, int dims) throws ClassNotFoundException {
+ StringBuffer buf = new StringBuffer();
+ for (int i = 0; i < dims; i++) {
+ buf.append('[');
+ }
+ buf.append(getSignature(componentType));
+ return Class.forName(buf.toString(), false, componentType.getClassLoader());
+ }
+}
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URL: http://svn.apache.org/viewvc/tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/JavaIntrospectionHelperTestCase.java?rev=802142&view=auto
==============================================================================
--- tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/JavaIntrospectionHelperTestCase.java (added)
+++ tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/JavaIntrospectionHelperTestCase.java Fri Aug 7 18:47:24 2009
@@ -0,0 +1,71 @@
+/*
+ * 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 org.apache.tuscany.sca.common.java.reflection;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.Set;
+
+import org.apache.tuscany.sca.core.DefaultExtensionPointRegistry;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+/**
+ *
+ */
+public class JavaIntrospectionHelperTestCase {
+ private static JavaIntrospectionHelper helper;
+
+ /**
+ * @throws java.lang.Exception
+ */
+ @BeforeClass
+ public static void setUpBeforeClass() throws Exception {
+ helper = JavaIntrospectionHelper.getInstance(new DefaultExtensionPointRegistry());
+ }
+
+ @Test
+ public void testGetMethods() {
+ Set<Method> methods = helper.getAllNonStaticMethods(SubTestImpl.class);
+ System.out.println(methods);
+ }
+
+ @Test
+ public void testGetFields() {
+ Set<Field> fields = helper.getAllNonStaticOrFinalFields(SubTestImpl.class);
+ System.out.println(fields);
+ }
+
+ @Test
+ public void testGetAllInterfaces() {
+ Set<Class<?>> interfaces = helper.getAllInterfaces(SubTestImpl.class);
+ System.out.println(interfaces);
+ }
+
+ /**
+ * @throws java.lang.Exception
+ */
+ @AfterClass
+ public static void tearDownAfterClass() throws Exception {
+ helper = null;
+ }
+
+}
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Added: tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/SubTestImpl.java
URL: http://svn.apache.org/viewvc/tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/SubTestImpl.java?rev=802142&view=auto
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--- tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/SubTestImpl.java (added)
+++ tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/SubTestImpl.java Fri Aug 7 18:47:24 2009
@@ -0,0 +1,45 @@
+/*
+ * 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 org.apache.tuscany.sca.common.java.reflection;
+
+/**
+ *
+ */
+public class SubTestImpl extends TestImpl implements Test2 {
+ private final int age = 0;
+ public String message;
+ protected static Test1 test1;
+
+ public void test2(int i) {
+ System.out.println(age + i);
+ }
+
+ @Override
+ public String test(String str) {
+ return hello(str);
+ }
+
+ private String hello(String str) {
+ return message + ":" + str;
+ }
+
+ public static void test4() {
+ }
+}
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URL: http://svn.apache.org/viewvc/tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/Test1.java?rev=802142&view=auto
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--- tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/Test1.java (added)
+++ tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/Test1.java Fri Aug 7 18:47:24 2009
@@ -0,0 +1,28 @@
+/*
+ * 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 org.apache.tuscany.sca.common.java.reflection;
+
+/**
+ *
+ */
+public interface Test1 {
+ String test(String str);
+ void test1(int i);
+}
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Added: tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/Test2.java
URL: http://svn.apache.org/viewvc/tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/Test2.java?rev=802142&view=auto
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--- tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/Test2.java (added)
+++ tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/Test2.java Fri Aug 7 18:47:24 2009
@@ -0,0 +1,28 @@
+/*
+ * 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 org.apache.tuscany.sca.common.java.reflection;
+
+/**
+ *
+ */
+public interface Test2 {
+ String test(String str);
+ void test2(int i);
+}
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URL: http://svn.apache.org/viewvc/tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/TestImpl.java?rev=802142&view=auto
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--- tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/TestImpl.java (added)
+++ tuscany/java/sca/modules/common-java/src/test/java/org/apache/tuscany/sca/common/java/reflection/TestImpl.java Fri Aug 7 18:47:24 2009
@@ -0,0 +1,44 @@
+/*
+ * 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 org.apache.tuscany.sca.common.java.reflection;
+
+/**
+ *
+ */
+public class TestImpl implements Test1 {
+ private String message;
+ protected Test2 test2;
+
+ public void test1(int i) {
+ }
+
+ protected void setTest2(Test2 test2) {
+ this.test2 = test2;
+ }
+
+ public String test(String str) {
+ return hello(str);
+ }
+
+ private String hello(String str) {
+ return message + ":" + str;
+ }
+
+}
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