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Posted to commits@tamaya.apache.org by pl...@apache.org on 2016/09/25 21:35:46 UTC
[06/23] incubator-tamaya-sandbox git commit: TAMAYA-114: Added
additional implementations shared by modules.
TAMAYA-114: Added additional implementations shared by modules.
Project: http://git-wip-us.apache.org/repos/asf/incubator-tamaya-sandbox/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-tamaya-sandbox/commit/e441ee72
Tree: http://git-wip-us.apache.org/repos/asf/incubator-tamaya-sandbox/tree/e441ee72
Diff: http://git-wip-us.apache.org/repos/asf/incubator-tamaya-sandbox/diff/e441ee72
Branch: refs/heads/master
Commit: e441ee726f3d08757d7620f8dbe809bb4aa96420
Parents: 32235c4
Author: anatole <an...@apache.org>
Authored: Fri Oct 16 19:32:46 2015 +0200
Committer: anatole <an...@apache.org>
Committed: Fri Oct 16 19:32:46 2015 +0200
----------------------------------------------------------------------
.../ctx/DefaultConfigurationContext.java | 256 -----------
.../clsupport/internal/ctx/EnumConverter.java | 67 ---
.../internal/ctx/PropertyConverterManager.java | 434 -------------------
3 files changed, 757 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/incubator-tamaya-sandbox/blob/e441ee72/src/main/java/org/apache/tamaya/clsupport/internal/ctx/DefaultConfigurationContext.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/tamaya/clsupport/internal/ctx/DefaultConfigurationContext.java b/src/main/java/org/apache/tamaya/clsupport/internal/ctx/DefaultConfigurationContext.java
deleted file mode 100644
index 978dbb7..0000000
--- a/src/main/java/org/apache/tamaya/clsupport/internal/ctx/DefaultConfigurationContext.java
+++ /dev/null
@@ -1,256 +0,0 @@
-/*
- * 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.tamaya.clsupport.internal.ctx;
-
-import org.apache.tamaya.ConfigurationProvider;
-import org.apache.tamaya.TypeLiteral;
-import org.apache.tamaya.spi.ConfigurationContext;
-import org.apache.tamaya.spi.ConfigurationContextBuilder;
-import org.apache.tamaya.spi.PropertyConverter;
-import org.apache.tamaya.spi.PropertyFilter;
-import org.apache.tamaya.spi.PropertySource;
-import org.apache.tamaya.spi.PropertySourceProvider;
-import org.apache.tamaya.spi.PropertyValueCombinationPolicy;
-import org.apache.tamaya.spi.ServiceContextManager;
-
-import javax.annotation.Priority;
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.locks.Lock;
-import java.util.concurrent.locks.ReentrantReadWriteLock;
-import java.util.logging.Logger;
-
-/**
- * Default Implementation of a simple ConfigurationContext.
- */
-public class DefaultConfigurationContext implements ConfigurationContext {
- /** The logger used. */
- private final static Logger LOG = Logger.getLogger(DefaultConfigurationContext.class.getName());
- /**
- * Cubcomponent handling {@link PropertyConverter} instances.
- */
- private PropertyConverterManager propertyConverterManager = new PropertyConverterManager();
-
- /**
- * The current unmodifiable list of loaded {@link PropertySource} instances.
- */
- private List<PropertySource> immutablePropertySources;
-
- /**
- * The current unmodifiable list of loaded {@link PropertyFilter} instances.
- */
- private List<PropertyFilter> immutablePropertyFilters;
-
- /**
- * The overriding policy used when combining PropertySources registered to evalute the final configuration
- * values.
- */
- private PropertyValueCombinationPolicy propertyValueCombinationPolicy;
-
- /**
- * Lock for internal synchronization.
- */
- private final ReentrantReadWriteLock propertySourceLock = new ReentrantReadWriteLock();
-
- /** Comparator used for ordering property sources. */
- private final PropertySourceComparator propertySourceComparator = new PropertySourceComparator();
-
- /** Comparator used for ordering property filters. */
- private final PropertyFilterComparator propertyFilterComparator = new PropertyFilterComparator();
-
-
- /**
- * The first time the Configuration system gets invoked we do initialize
- * all our {@link PropertySource}s and
- * {@link PropertyFilter}s which are known at startup.
- */
- public DefaultConfigurationContext() {
- List<PropertySource> propertySources = new ArrayList<>();
-
- // first we load all PropertySources which got registered via java.util.ServiceLoader
- propertySources.addAll(ServiceContextManager.getServiceContext().getServices(PropertySource.class));
-
- // after that we add all PropertySources which get dynamically registered via their PropertySourceProviders
- propertySources.addAll(evaluatePropertySourcesFromProviders());
-
- // now sort them according to their ordinal values
- Collections.sort(propertySources, new PropertySourceComparator());
-
- immutablePropertySources = Collections.unmodifiableList(propertySources);
- LOG.info("Registered " + immutablePropertySources.size() + " property sources: " +
- immutablePropertySources);
-
- // as next step we pick up the PropertyFilters pretty much the same way
- List<PropertyFilter> propertyFilters = new ArrayList<>();
- propertyFilters.addAll(ServiceContextManager.getServiceContext().getServices(PropertyFilter.class));
- Collections.sort(propertyFilters, new PropertyFilterComparator());
- immutablePropertyFilters = Collections.unmodifiableList(propertyFilters);
- LOG.info("Registered " + immutablePropertyFilters.size() + " property filters: " +
- immutablePropertyFilters);
-
- immutablePropertyFilters = Collections.unmodifiableList(propertyFilters);
- LOG.info("Registered " + immutablePropertyFilters.size() + " property filters: " +
- immutablePropertyFilters);
- propertyValueCombinationPolicy = ServiceContextManager.getServiceContext().getService(PropertyValueCombinationPolicy.class);
- if(propertyValueCombinationPolicy==null) {
- propertyValueCombinationPolicy = PropertyValueCombinationPolicy.DEFAULT_OVERRIDING_COLLECTOR;
- }
- LOG.info("Using PropertyValueCombinationPolicy: " + propertyValueCombinationPolicy);
- }
-
- /**
- * Pick up all {@link PropertySourceProvider}s and return all the
- * {@link PropertySource}s they like to register.
- */
- private Collection<? extends PropertySource> evaluatePropertySourcesFromProviders() {
- List<PropertySource> propertySources = new ArrayList<>();
- Collection<PropertySourceProvider> propertySourceProviders = ServiceContextManager.getServiceContext().getServices(PropertySourceProvider.class);
- for (PropertySourceProvider propertySourceProvider : propertySourceProviders) {
- Collection<PropertySource> sources = propertySourceProvider.getPropertySources();
- LOG.finer("PropertySourceProvider " + propertySourceProvider.getClass().getName() +
- " provided the following property sources: " + sources);
- propertySources.addAll(sources);
- }
-
- return propertySources;
- }
-
- @Override
- public void addPropertySources(PropertySource... propertySourcesToAdd) {
- Lock writeLock = propertySourceLock.writeLock();
- try {
- writeLock.lock();
- List<PropertySource> newPropertySources = new ArrayList<>(this.immutablePropertySources);
- newPropertySources.addAll(Arrays.asList(propertySourcesToAdd));
- Collections.sort(newPropertySources, new PropertySourceComparator());
-
- this.immutablePropertySources = Collections.unmodifiableList(newPropertySources);
- } finally {
- writeLock.unlock();
- }
- }
-
- /**
- * Comparator used for comparing PropertySources.
- */
- private static class PropertySourceComparator implements Comparator<PropertySource>, Serializable {
-
- private static final long serialVersionUID = 1L;
-
- /**
- * Order property source reversely, the most important come first.
- *
- * @param source1 the first PropertySource
- * @param source2 the second PropertySource
- * @return the comparison result.
- */
- private int comparePropertySources(PropertySource source1, PropertySource source2) {
- if (source1.getOrdinal() < source2.getOrdinal()) {
- return -1;
- } else if (source1.getOrdinal() > source2.getOrdinal()) {
- return 1;
- } else {
- return source1.getClass().getName().compareTo(source2.getClass().getName());
- }
- }
-
- @Override
- public int compare(PropertySource source1, PropertySource source2) {
- return comparePropertySources(source1, source2);
- }
- }
-
- /**
- * Comparator used for comparing PropertyFilters.
- */
- private static class PropertyFilterComparator implements Comparator<PropertyFilter>, Serializable{
-
- private static final long serialVersionUID = 1L;
-
- /**
- * Compare 2 filters for ordering the filter chain.
- *
- * @param filter1 the first filter
- * @param filter2 the second filter
- * @return the comparison result
- */
- private int comparePropertyFilters(PropertyFilter filter1, PropertyFilter filter2) {
- Priority prio1 = filter1.getClass().getAnnotation(Priority.class);
- Priority prio2 = filter2.getClass().getAnnotation(Priority.class);
- int ord1 = prio1 != null ? prio1.value() : 0;
- int ord2 = prio2 != null ? prio2.value() : 0;
-
- if (ord1 < ord2) {
- return -1;
- } else if (ord1 > ord2) {
- return 1;
- } else {
- return filter1.getClass().getName().compareTo(filter2.getClass().getName());
- }
- }
-
- @Override
- public int compare(PropertyFilter filter1, PropertyFilter filter2) {
- return comparePropertyFilters(filter1, filter2);
- }
- }
-
- @Override
- public List<PropertySource> getPropertySources() {
- return immutablePropertySources;
- }
-
- @Override
- public <T> void addPropertyConverter(TypeLiteral<T> typeToConvert, PropertyConverter<T> propertyConverter) {
- propertyConverterManager.register(typeToConvert, propertyConverter);
- LOG.info("Added PropertyConverter: " + propertyConverter.getClass().getName());
- }
-
- @Override
- public Map<TypeLiteral<?>, List<PropertyConverter<?>>> getPropertyConverters() {
- return propertyConverterManager.getPropertyConverters();
- }
-
- @Override
- public <T> List<PropertyConverter<T>> getPropertyConverters(TypeLiteral<T> targetType) {
- return propertyConverterManager.getPropertyConverters(targetType);
- }
-
- @Override
- public List<PropertyFilter> getPropertyFilters() {
- return immutablePropertyFilters;
- }
-
- @Override
- public PropertyValueCombinationPolicy getPropertyValueCombinationPolicy(){
- return propertyValueCombinationPolicy;
- }
-
- @Override
- public ConfigurationContextBuilder toBuilder() {
- return ConfigurationProvider.getConfigurationContextBuilder().setContext(this);
- }
-
-}
http://git-wip-us.apache.org/repos/asf/incubator-tamaya-sandbox/blob/e441ee72/src/main/java/org/apache/tamaya/clsupport/internal/ctx/EnumConverter.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/tamaya/clsupport/internal/ctx/EnumConverter.java b/src/main/java/org/apache/tamaya/clsupport/internal/ctx/EnumConverter.java
deleted file mode 100644
index a75de75..0000000
--- a/src/main/java/org/apache/tamaya/clsupport/internal/ctx/EnumConverter.java
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * 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.tamaya.clsupport.internal.ctx;
-
-import org.apache.tamaya.ConfigException;
-import org.apache.tamaya.spi.PropertyConverter;
-
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.util.Locale;
-import java.util.Objects;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-
-/**
- * Converter, converting from String to tge given enum type.
- * @param <T> the enum type.
- */
-class EnumConverter<T> implements PropertyConverter<T> {
- private Logger LOG = Logger.getLogger(EnumConverter.class.getName());
- private Class<T> enumType;
- private Method factory;
-
- public EnumConverter(Class<T> enumType) {
- if (!Enum.class.isAssignableFrom(enumType)) {
- throw new IllegalArgumentException("Not an Enum: " + enumType.getName());
- }
- this.enumType = Objects.requireNonNull(enumType);
- try {
- this.factory = enumType.getMethod("valueOf", String.class);
- } catch (NoSuchMethodException e) {
- throw new ConfigException("Uncovertible enum type without valueOf method found, please provide a custom " +
- "PropertyConverter for: " + enumType.getName());
- }
- }
-
- @Override
- public T convert(String value) {
- try {
- return (T) factory.invoke(null, value);
- } catch (InvocationTargetException | IllegalAccessException e) {
- LOG.log(Level.FINEST, "Invalid enum value '" + value + "' for " + enumType.getName(), e);
- }
- try {
- return (T) factory.invoke(null, value.toUpperCase(Locale.ENGLISH));
- } catch (InvocationTargetException | IllegalAccessException e) {
- LOG.log(Level.FINEST, "Invalid enum value '" + value + "' for " + enumType.getName(), e);
- }
- return null;
- }
-}
http://git-wip-us.apache.org/repos/asf/incubator-tamaya-sandbox/blob/e441ee72/src/main/java/org/apache/tamaya/clsupport/internal/ctx/PropertyConverterManager.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/tamaya/clsupport/internal/ctx/PropertyConverterManager.java b/src/main/java/org/apache/tamaya/clsupport/internal/ctx/PropertyConverterManager.java
deleted file mode 100644
index 848fe78..0000000
--- a/src/main/java/org/apache/tamaya/clsupport/internal/ctx/PropertyConverterManager.java
+++ /dev/null
@@ -1,434 +0,0 @@
-/*
- * 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.tamaya.clsupport.internal.ctx;
-
-import org.apache.tamaya.ConfigException;
-import org.apache.tamaya.TypeLiteral;
-import org.apache.tamaya.spi.PropertyConverter;
-import org.apache.tamaya.spi.ServiceContextManager;
-
-import javax.annotation.Priority;
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-import java.lang.reflect.Type;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.locks.Lock;
-import java.util.concurrent.locks.ReadWriteLock;
-import java.util.concurrent.locks.ReentrantReadWriteLock;
-import java.util.logging.Logger;
-
-/**
- * Manager that deals with {@link PropertyConverter} instances.
- * This class is thread-safe.
- */
-class PropertyConverterManager {
- /**
- * The logger used.
- */
- private static final Logger LOG = Logger.getLogger(PropertyConverterManager.class.getName());
- /**
- * The registered converters.
- */
- private Map<TypeLiteral<?>, List<PropertyConverter<?>>> converters = new ConcurrentHashMap<>();
- /**
- * The transitive converters.
- */
- private Map<TypeLiteral<?>, List<PropertyConverter<?>>> transitiveConverters = new ConcurrentHashMap<>();
- /**
- * The lock used.
- */
- private ReadWriteLock lock = new ReentrantReadWriteLock();
-
- private static final Comparator<Object> PRIORITY_COMPARATOR = new Comparator<Object>() {
-
- @Override
- public int compare(Object o1, Object o2) {
- int prio = getPriority(o1) - getPriority(o2);
- if (prio < 0) {
- return 1;
- } else if (prio > 0) {
- return -1;
- } else {
- return o1.getClass().getSimpleName().compareTo(o2.getClass().getSimpleName());
- }
- }
- };
-
- /**
- * Checks the given instance for a @Priority annotation. If present the annotation's value s evaluated. If no such
- * annotation is present, a default priority is returned (1);
- * @param o the instance, not null.
- * @return a priority, by default 1.
- */
- public static int getPriority(Object o){
- int prio = 1;
- Priority priority = o.getClass().getAnnotation(Priority.class);
- if (priority != null) {
- prio = priority.value();
- }
- return prio;
- }
-
- /**
- * Constructor.
- */
- public PropertyConverterManager() {
- this(true);
- }
-
- public PropertyConverterManager(boolean init) {
- if (init) {
- initConverters();
- }
- }
-
- /**
- * Registers the default converters provided out of the box.
- */
- protected void initConverters() {
- for (PropertyConverter conv : ServiceContextManager.getServiceContext().getServices(PropertyConverter.class)) {
- Type type = TypeLiteral.getGenericInterfaceTypeParameters(conv.getClass(), PropertyConverter.class)[0];
- register(TypeLiteral.of(type), conv);
- }
- }
-
- /**
- * Registers a ew converter instance.
- *
- * @param targetType the target type, not null.
- * @param converter the converter, not null.
- * @param <T> the type.
- */
- public <T> void register(TypeLiteral<T> targetType, PropertyConverter<T> converter) {
- Objects.requireNonNull(converter);
- Lock writeLock = lock.writeLock();
- try {
- writeLock.lock();
- List converters = List.class.cast(this.converters.get(targetType));
- List<PropertyConverter<?>> newConverters = new ArrayList<>();
- if (converters != null) {
- newConverters.addAll(converters);
- }
- newConverters.add(converter);
- Collections.sort(newConverters, PRIORITY_COMPARATOR);
- this.converters.put(targetType, Collections.unmodifiableList(newConverters));
- // evaluate transitive closure for all inherited supertypes and implemented interfaces
- // direct implemented interfaces
- for (Class<?> ifaceType : targetType.getRawType().getInterfaces()) {
- converters = List.class.cast(this.transitiveConverters.get(TypeLiteral.of(ifaceType)));
- newConverters = new ArrayList<>();
- if (converters != null) {
- newConverters.addAll(converters);
- }
- newConverters.add(converter);
- Collections.sort(newConverters, PRIORITY_COMPARATOR);
- this.transitiveConverters.put(TypeLiteral.of(ifaceType), Collections.unmodifiableList(newConverters));
- }
- Class<?> superClass = targetType.getRawType().getSuperclass();
- while (superClass != null && !superClass.equals(Object.class)) {
- converters = List.class.cast(this.transitiveConverters.get(TypeLiteral.of(superClass)));
- newConverters = new ArrayList<>();
- if (converters != null) {
- newConverters.addAll(converters);
- }
- newConverters.add(converter);
- Collections.sort(newConverters, PRIORITY_COMPARATOR);
- this.transitiveConverters.put(TypeLiteral.of(superClass), Collections.unmodifiableList(newConverters));
- for (Class<?> ifaceType : superClass.getInterfaces()) {
- converters = List.class.cast(this.transitiveConverters.get(TypeLiteral.of(ifaceType)));
- newConverters = new ArrayList<>();
- if (converters != null) {
- newConverters.addAll(converters);
- }
- newConverters.add(converter);
- Collections.sort(newConverters, PRIORITY_COMPARATOR);
- this.transitiveConverters.put(TypeLiteral.of(ifaceType), Collections.unmodifiableList(newConverters));
- }
- superClass = superClass.getSuperclass();
- }
- } finally {
- writeLock.unlock();
- }
- }
-
- /**
- * Allows to evaluate if a given target type is supported.
- *
- * @param targetType the target type, not null.
- * @return true, if a converter for the given type is registered, or a default one can be created.
- */
- public boolean isTargetTypeSupported(TypeLiteral<?> targetType) {
- if (converters.containsKey(targetType) || transitiveConverters.containsKey(targetType)) {
- return true;
- }
- return createDefaultPropertyConverter(targetType) != null;
- }
-
- /**
- * Get a map of all property converters currently registered. This will not contain the converters that
- * may be created, when an instance is adapted, which provides a String constructor or compatible
- * factory methods taking a single String instance.
- *
- * @return the current map of instantiated and registered converters.
- * @see #createDefaultPropertyConverter(TypeLiteral)
- */
- public Map<TypeLiteral<?>, List<PropertyConverter<?>>> getPropertyConverters() {
- Lock readLock = lock.readLock();
- try {
- readLock.lock();
- return new HashMap<>(this.converters);
- } finally {
- readLock.unlock();
- }
- }
-
- /**
- * Get the list of all current registered converters for the given target type.
- * If not converters are registered, they component tries to create and register a dynamic
- * converter based on String costructor or static factory methods available.<br/>
- * The converters provided are of the following type and returned in the following order:
- * <ul>
- * <li>Converters mapped explicitly to the required target type are returned first, ordered
- * by decreasing priority. This means, if explicit converters are registered these are used
- * primarly for converting a value.</li>
- * <li>The target type of each explicitly registered converter also can be transitively mapped to
- * 1) all directly implemented interfaces, 2) all its superclasses (except Object), 3) all the interfaces
- * implemented by its superclasses. These groups of transitive converters is returned similarly in the
- * order as mentioned, whereas also here a priority based decreasing ordering is applied.</li>
- * <li>java.lang wrapper classes and native types are automatically mapped.</li>
- * <li>If no explicit converters are registered, for Enum types a default implementation is provided that
- * compares the configuration values with the different enum members defined (cases sensitive mapping).</li>
- * </ul>
- *
- * So given that list above directly registered mappings always are tried first, before any transitive mapping
- * should be used. Also in all cases @Priority annotations are honored for ordering of the converters in place.
- * Transitive conversion is supported for all directly implemented interfaces (including inherited ones) and
- * the inheritance hierarchy (exception Object). Superinterfaces of implemented interfaces are ignored.
- *
- *
- * @param targetType the target type, not null.
- * @param <T> the type class
- * @return the ordered list of converters (may be empty for not convertible types).
- * @see #createDefaultPropertyConverter(TypeLiteral)
- */
- public <T> List<PropertyConverter<T>> getPropertyConverters(TypeLiteral<T> targetType) {
- Lock readLock = lock.readLock();
- List<PropertyConverter<T>> converterList = new ArrayList<>();
- List<PropertyConverter<T>> converters;
- // direct mapped converters
- try {
- readLock.lock();
- converters = List.class.cast(this.converters.get(targetType));
- } finally {
- readLock.unlock();
- }
- if (converters != null) {
- converterList.addAll(converters);
- }
- // transitive converter
- try {
- readLock.lock();
- converters = List.class.cast(this.transitiveConverters.get(targetType));
- } finally {
- readLock.unlock();
- }
- if (converters != null) {
- converterList.addAll(converters);
- }
- // handling of java.lang wrapper classes
- TypeLiteral<T> boxedType = mapBoxedType(targetType);
- if (boxedType != null) {
- try {
- readLock.lock();
- converters = List.class.cast(this.converters.get(boxedType));
- } finally {
- readLock.unlock();
- }
- if (converters != null) {
- converterList.addAll(converters);
- }
- }
- if (converterList.isEmpty()) {
- // adding any converters created on the fly, e.g. for enum types.
- PropertyConverter<T> defaultConverter = createDefaultPropertyConverter(targetType);
- if (defaultConverter != null) {
- register(targetType, defaultConverter);
- try {
- readLock.lock();
- converters = List.class.cast(this.converters.get(targetType));
- } finally {
- readLock.unlock();
- }
- }
- if (converters != null) {
- converterList.addAll(converters);
- }
- }
- return converterList;
- }
-
- /**
- * Maps native types to the corresponding boxed types.
- *
- * @param targetType the native type.
- * @param <T> the type
- * @return the boxed type, or null.
- */
- private <T> TypeLiteral<T> mapBoxedType(TypeLiteral<T> targetType) {
- Type parameterType = targetType.getType();
- if (parameterType == int.class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Integer.class));
- }
- if (parameterType == short.class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Short.class));
- }
- if (parameterType == byte.class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Byte.class));
- }
- if (parameterType == long.class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Long.class));
- }
- if (parameterType == boolean.class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Boolean.class));
- }
- if (parameterType == char.class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Character.class));
- }
- if (parameterType == float.class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Float.class));
- }
- if (parameterType == double.class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Double.class));
- }
- if (parameterType == int[].class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Integer[].class));
- }
- if (parameterType == short[].class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Short[].class));
- }
- if (parameterType == byte[].class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Byte[].class));
- }
- if (parameterType == long[].class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Long[].class));
- }
- if (parameterType == boolean.class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Boolean.class));
- }
- if (parameterType == char[].class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Character[].class));
- }
- if (parameterType == float[].class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Float[].class));
- }
- if (parameterType == double[].class) {
- return TypeLiteral.class.cast(TypeLiteral.of(Double[].class));
- }
- return null;
- }
-
- /**
- * Creates a dynamic PropertyConverter for the given target type.
- *
- * @param targetType the target type
- * @param <T> the type class
- * @return a new converter, or null.
- */
- protected <T> PropertyConverter<T> createDefaultPropertyConverter(final TypeLiteral<T> targetType) {
- if (Enum.class.isAssignableFrom(targetType.getRawType())) {
- return new EnumConverter<T>(targetType.getRawType());
- }
- PropertyConverter<T> converter = null;
- final Method factoryMethod = getFactoryMethod(targetType.getRawType(), "of", "valueOf", "instanceOf", "getInstance", "from", "fromString", "parse");
- if (factoryMethod != null) {
- converter = new PropertyConverter<T>() {
- @Override
- public T convert(String value) {
- try {
- if (!Modifier.isStatic(factoryMethod.getModifiers())) {
- throw new ConfigException(factoryMethod.toGenericString() +
- " is not a static method. Only static " +
- "methods can be used as factory methods.");
- }
- AccessController.doPrivileged(new PrivilegedAction<Object>() {
- public Object run() {
- factoryMethod.setAccessible(true);
- return null;
- }
- });
- Object invoke = factoryMethod.invoke(null, value);
- return targetType.getRawType().cast(invoke);
- } catch (Exception e) {
- throw new ConfigException("Failed to decode '" + value + "'", e);
- }
- }
- };
- }
- if (converter == null) {
- try {
- final Constructor<T> constr = targetType.getRawType().getDeclaredConstructor(String.class);
- converter = new PropertyConverter<T>() {
- @Override
- public T convert(String value) {
- try {
- constr.setAccessible(true);
- return constr.newInstance(value);
- } catch (Exception e) {
- throw new ConfigException("Failed to decode '" + value + "'", e);
- }
- }
- };
- } catch (Exception e) {
- LOG.finest("Failed to construct instance of type: " + targetType.getRawType().getName() + ": " + e);
- }
- }
- return converter;
- }
-
- /**
- * Tries to evaluate a factory method that can be used to create an instance based on a String.
- *
- * @param type the target type
- * @param methodNames the possible static method names
- * @return the first method found, or null.
- */
- private Method getFactoryMethod(Class<?> type, String... methodNames) {
- Method m;
- for (String name : methodNames) {
- try {
- m = type.getDeclaredMethod(name, String.class);
- return m;
- } catch (NoSuchMethodException | RuntimeException e) {
- LOG.finest("No such factory method found on type: " + type.getName() + ", methodName: " + name);
- }
- }
- return null;
- }
-
-}