trunk/xbean-spring-common/src/main/java/org/apache/xbean/spring/context/impl/NamedConstructorArgs.java - geronimo-xbean - Git at Google

 /**
  *
  * Copyright 2005-2006 The Apache Software Foundation or its licensors, as applicable.
  *
  *  Licensed 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.xbean.spring.context.impl;

 import org.springframework.beans.BeansException;
 import org.springframework.beans.FatalBeanException;
 import org.springframework.beans.MutablePropertyValues;
 import org.springframework.beans.PropertyValue;
 import org.springframework.beans.factory.FactoryBean;
 import org.springframework.beans.factory.config.BeanDefinitionHolder;
 import org.springframework.beans.factory.config.ConstructorArgumentValues;
 import org.springframework.beans.factory.support.AbstractBeanDefinition;

 import java.lang.reflect.Constructor;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;

 /**
  * NamedConstructorArgs is a BeanFactoryPostProcessor that converts property declarations into indexed constructor args
  * based on the the constructor parameter names annotation.  This process first selects a constructor and then fills in
  * the constructor arguments from the properties defined in the bean definition.  If a property is not defined in the
  * bean definition, first the defaultValues map is checked for a value and if a value is not present a Java default
  * value is provided for the constructor argument (e.g. numbers are assigned 0 and objects are assigned null).
  *
  * @author Dain Sundstrom
  * @version $Id$
  * @since 2.0
  */
 public class NamedConstructorArgs {
     private Map defaultValues = new HashMap();

     /**
      * Gets the default values that are assigned to constructor arguments without a defined value.
      * @return the default values that are assigned to constructor arguments without a defined value
      */
     public List getDefaultValues() {
         List values = new LinkedList();
         for (Iterator iterator = defaultValues.entrySet().iterator(); iterator.hasNext();) {
             Map.Entry entry = (Map.Entry) iterator.next();
             PropertyKey key = (PropertyKey) entry.getKey();
             Object value = entry.getValue();
             values.add(new DefaultProperty(key.name, key.type, value));
         }
         return values;
     }

     /**
      * Sets the default values that are assigned to constructor arguments without a defined value.
      * @param defaultValues the values that are assigned to constructor arguments without a defined value
      */
     public void setDefaultValues(List defaultValues) {
         this.defaultValues.clear();
         for (Iterator iterator = defaultValues.iterator(); iterator.hasNext();) {
             addDefaultValue((DefaultProperty) iterator.next());
         }
     }

     /**
      * Adds a default value for a property with the specified name and type.
      * @param name the name of the property
      * @param type the type of the property
      * @param value the default value for a property with the specified name and type
      */
     public void addDefaultValue(String name, Class type, Object value) {
         defaultValues.put(new PropertyKey(name, type), value);
     }

     /**
      * Adds a defautl value for a property.
      * @param defaultProperty the default property information
      */
     private void addDefaultValue(DefaultProperty defaultProperty) {
         defaultValues.put(new PropertyKey(defaultProperty.getName(), defaultProperty.getType()), defaultProperty.getValue());
     }

     public void processParameters(BeanDefinitionHolder definitionHolder, MappingMetaData metadata) throws BeansException {
         // this only works if we have an abstsract bean definition
         if (!(definitionHolder.getBeanDefinition() instanceof AbstractBeanDefinition)) {
             return;
         }

         AbstractBeanDefinition beanDefinition = (AbstractBeanDefinition) definitionHolder.getBeanDefinition();
         ConstructorArgumentValues constructorArgumentValues = beanDefinition.getConstructorArgumentValues();

         // if this bean already has constructor arguments defined, don't mess with them
         if (constructorArgumentValues.getArgumentCount() > 0) {
             return;
         }

         // try to get a list of constructor arg names to use
         ConstructionInfo constructionInfo = selectConstructionMethod(beanDefinition, metadata);
         if (constructionInfo == null) {
             return;
         }

         // remove each named property and add an indexed constructor arg
         MutablePropertyValues propertyValues = beanDefinition.getPropertyValues();
         String[] parameterNames = constructionInfo.parameterNames;
         Class[] parameterTypes = constructionInfo.parameterTypes;
         for (int i = 0; i < parameterNames.length; i++) {
             String parameterName = parameterNames[i];
             Class parameterType = parameterTypes[i];

             PropertyValue propertyValue = propertyValues.getPropertyValue(parameterName);
             if (propertyValue != null) {
                 propertyValues.removePropertyValue(parameterName);
                 constructorArgumentValues.addIndexedArgumentValue(i, propertyValue.getValue(), parameterType.getName());
             } else {
                 Object defaultValue = defaultValues.get(new PropertyKey(parameterName, parameterType));
                 if (defaultValue == null) {
                     defaultValue = DEFAULT_VALUE.get(parameterType);
                 }
                 if (defaultValue instanceof FactoryBean) {
                     try {
                         defaultValue = ((FactoryBean)defaultValue).getObject();
                     } catch (Exception e) {
                         throw new FatalBeanException("Unable to get object value from bean factory", e);
                     }
                 }
                 constructorArgumentValues.addIndexedArgumentValue(i, defaultValue, parameterType.getName());
             }
         }

         // todo set any usable default values on the bean definition
     }

     private ConstructionInfo selectConstructionMethod(AbstractBeanDefinition beanDefinition, MappingMetaData metadata) {
         Class beanClass = beanDefinition.getBeanClass();

         // get a set containing the names of the defined properties
         Set definedProperties = new HashSet();
         PropertyValue[] values = beanDefinition.getPropertyValues().getPropertyValues();
         for (int i = 0; i < values.length; i++) {
             definedProperties.add(values[i].getName());
         }

         // first check for a factory method
         if (beanDefinition.getFactoryMethodName() != null) {
             return selectFactory(beanClass, beanDefinition, metadata, definedProperties);
         } else {
             return selectConstructor(beanClass, metadata, definedProperties);
         }
     }

     private ConstructionInfo selectFactory(Class beanClass, AbstractBeanDefinition beanDefinition, MappingMetaData metadata, Set definedProperties) {
         String factoryMethodName = beanDefinition.getFactoryMethodName();

         // get the factory methods sorted by longest arg length first
         Method[] methods = beanClass.getMethods();
         List factoryMethods = new ArrayList(methods.length);
         for (int i = 0; i < methods.length; i++) {
             Method method = methods[i];
             if (method.getName().equals(factoryMethodName)) {
                 factoryMethods.add(method);
             }
         }

         Collections.sort(factoryMethods, new ArgLengthComparator());

         // if a factory method has been annotated as the default constructor we always use that constructor
         for (Iterator iterator = factoryMethods.iterator(); iterator.hasNext();) {
             Method factoryMethod = (Method) iterator.next();

             if (metadata.isDefaultFactoryMethod(beanClass, factoryMethod)) {
                 return new ConstructionInfo(beanClass, factoryMethod, metadata);
             }
         }

         // try to find a constructor for which we have all of the properties defined
         for (Iterator iterator = factoryMethods.iterator(); iterator.hasNext();) {
             Method factoryMethod = (Method) iterator.next();
             ConstructionInfo constructionInfo = new ConstructionInfo(beanClass, factoryMethod, metadata);
             if (isUsableConstructor(constructionInfo, definedProperties)) {
                 return constructionInfo;
             }
         }
         return null;
     }

     private ConstructionInfo selectConstructor(Class beanClass, MappingMetaData metadata, Set definedProperties) {
         // get the constructors sorted by longest arg length first
         List constructors = new ArrayList(Arrays.asList(beanClass.getConstructors()));
         Collections.sort(constructors, new ArgLengthComparator());

         // if a constructor has been annotated as the default constructor we always use that constructor
         for (Iterator iterator = constructors.iterator(); iterator.hasNext();) {
             Constructor constructor = (Constructor) iterator.next();

             if (metadata.isDefaultConstructor(constructor)) {
                 return new ConstructionInfo(constructor, metadata);
             }
         }

         // try to find a constructor for which we have all of the properties defined
         for (Iterator iterator = constructors.iterator(); iterator.hasNext();) {
             Constructor constructor = (Constructor) iterator.next();
             ConstructionInfo constructionInfo = new ConstructionInfo(constructor, metadata);
             if (isUsableConstructor(constructionInfo, definedProperties)) {
                 return constructionInfo;
             }
         }
         return null;
     }

     private boolean isUsableConstructor(ConstructionInfo constructionInfo, Set definedProperties) {
         // if we don't have parameter names this is not the constructor we are looking for
         String[] parameterNames = constructionInfo.parameterNames;
         if (parameterNames == null) {
             return false;
         }

         Class[] parameterTypes = constructionInfo.parameterTypes;
         for (int i = 0; i < parameterNames.length; i++) {
             String parameterName = parameterNames[i];
             Class parameterType = parameterTypes[i];

             // can we satify this property using a defined property or default property
             if (!definedProperties.contains(parameterName) && !defaultValues.containsKey(new PropertyKey(parameterName, parameterType))) {
                 return false;
             }
         }

         return true;
     }

     private class ConstructionInfo {
         private final Class[] parameterTypes;
         private final String[] parameterNames;

         public ConstructionInfo(Constructor constructor, MappingMetaData metadata) {
             this.parameterTypes = constructor.getParameterTypes();
             String[] names = metadata.getParameterNames(constructor);

             // verify that we have enough parameter names
             int expectedParameterCount = parameterTypes.length;
             if (names != null && names.length != expectedParameterCount) {
                 throw new FatalBeanException("Excpected " + expectedParameterCount + " parameter names for constructor but only got " +
                         names.length + ": " + constructor.toString());
             }
             if (expectedParameterCount == 0) {
                 names = new String[0];
             }

             this.parameterNames = names;
         }

         public ConstructionInfo(Class beanClass, Method factoryMethod, MappingMetaData metadata) {
             this.parameterTypes = factoryMethod.getParameterTypes();

             String[] names = metadata.getParameterNames(beanClass, factoryMethod);

             // verify that we have enough parameter names
             int expectedParameterCount = parameterTypes.length;
             if (names != null && names.length != expectedParameterCount) {
                 throw new FatalBeanException("Excpected " + expectedParameterCount + " parameter names for factory method but only got " +
                         names.length + ": " + factoryMethod.toString());
             }
             if (expectedParameterCount == 0) {
                 names = new String[0];
             }

             this.parameterNames = names;
         }
     }

     private static class ArgLengthComparator implements Comparator {
         public int compare(Object o1, Object o2) {
             return getArgLength(o2) - getArgLength(o1);
         }

         private int getArgLength(Object object) {
             if (object instanceof Method) {
                 return ((Method) object).getParameterTypes().length;
             } else {
                 return ((Constructor) object).getParameterTypes().length;
             }
         }
     }

     private static class PropertyKey {
         private final String name;
         private final Class type;

         public PropertyKey(String name, Class type) {
             this.name = name;
             this.type = type;
         }

         public boolean equals(Object object) {
             if (!(object instanceof PropertyKey)) {
                 return false;
             }

             PropertyKey defaultProperty = (PropertyKey) object;
             return name.equals(defaultProperty.name) && type.equals(type);
         }

         public int hashCode() {
             int result = 17;
             result = 37 * result + name.hashCode();
             result = 37 * result + type.hashCode();
             return result;
         }

         public String toString() {
             return "[" + name + " " + type + "]";
         }
     }

     private static final Map DEFAULT_VALUE;
     static {
         Map temp = new HashMap();
         temp.put(Boolean.TYPE, Boolean.FALSE);
         temp.put(Byte.TYPE, new Byte((byte) 0));
         temp.put(Character.TYPE, new Character((char) 0));
         temp.put(Short.TYPE, new Short((short) 0));
         temp.put(Integer.TYPE, new Integer(0));
         temp.put(Long.TYPE, new Long(0));
         temp.put(Float.TYPE, new Float(0));
         temp.put(Double.TYPE, new Double(0));

         DEFAULT_VALUE = Collections.unmodifiableMap(temp);
     }
 }
	/**
	*
	* Copyright 2005-2006 The Apache Software Foundation or its licensors, as applicable.
	*
	* Licensed 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.xbean.spring.context.impl;

	import org.springframework.beans.BeansException;
	import org.springframework.beans.FatalBeanException;
	import org.springframework.beans.MutablePropertyValues;
	import org.springframework.beans.PropertyValue;
	import org.springframework.beans.factory.FactoryBean;
	import org.springframework.beans.factory.config.BeanDefinitionHolder;
	import org.springframework.beans.factory.config.ConstructorArgumentValues;
	import org.springframework.beans.factory.support.AbstractBeanDefinition;

	import java.lang.reflect.Constructor;
	import java.lang.reflect.Method;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collections;
	import java.util.Comparator;
	import java.util.HashMap;
	import java.util.HashSet;
	import java.util.Iterator;
	import java.util.LinkedList;
	import java.util.List;
	import java.util.Map;
	import java.util.Set;

	/**
	* NamedConstructorArgs is a BeanFactoryPostProcessor that converts property declarations into indexed constructor args
	* based on the the constructor parameter names annotation. This process first selects a constructor and then fills in
	* the constructor arguments from the properties defined in the bean definition. If a property is not defined in the
	* bean definition, first the defaultValues map is checked for a value and if a value is not present a Java default
	* value is provided for the constructor argument (e.g. numbers are assigned 0 and objects are assigned null).
	*
	* @author Dain Sundstrom
	* @version $Id$
	* @since 2.0
	*/
	public class NamedConstructorArgs {
	private Map defaultValues = new HashMap();

	/**
	* Gets the default values that are assigned to constructor arguments without a defined value.
	* @return the default values that are assigned to constructor arguments without a defined value
	*/
	public List getDefaultValues() {
	List values = new LinkedList();
	for (Iterator iterator = defaultValues.entrySet().iterator(); iterator.hasNext();) {
	Map.Entry entry = (Map.Entry) iterator.next();
	PropertyKey key = (PropertyKey) entry.getKey();
	Object value = entry.getValue();
	values.add(new DefaultProperty(key.name, key.type, value));
	}
	return values;
	}

	/**
	* Sets the default values that are assigned to constructor arguments without a defined value.
	* @param defaultValues the values that are assigned to constructor arguments without a defined value
	*/
	public void setDefaultValues(List defaultValues) {
	this.defaultValues.clear();
	for (Iterator iterator = defaultValues.iterator(); iterator.hasNext();) {
	addDefaultValue((DefaultProperty) iterator.next());
	}
	}

	/**
	* Adds a default value for a property with the specified name and type.
	* @param name the name of the property
	* @param type the type of the property
	* @param value the default value for a property with the specified name and type
	*/
	public void addDefaultValue(String name, Class type, Object value) {
	defaultValues.put(new PropertyKey(name, type), value);
	}

	/**
	* Adds a defautl value for a property.
	* @param defaultProperty the default property information
	*/
	private void addDefaultValue(DefaultProperty defaultProperty) {
	defaultValues.put(new PropertyKey(defaultProperty.getName(), defaultProperty.getType()), defaultProperty.getValue());
	}

	public void processParameters(BeanDefinitionHolder definitionHolder, MappingMetaData metadata) throws BeansException {
	// this only works if we have an abstsract bean definition
	if (!(definitionHolder.getBeanDefinition() instanceof AbstractBeanDefinition)) {
	return;
	}

	AbstractBeanDefinition beanDefinition = (AbstractBeanDefinition) definitionHolder.getBeanDefinition();
	ConstructorArgumentValues constructorArgumentValues = beanDefinition.getConstructorArgumentValues();

	// if this bean already has constructor arguments defined, don't mess with them
	if (constructorArgumentValues.getArgumentCount() > 0) {
	return;
	}

	// try to get a list of constructor arg names to use
	ConstructionInfo constructionInfo = selectConstructionMethod(beanDefinition, metadata);
	if (constructionInfo == null) {
	return;
	}

	// remove each named property and add an indexed constructor arg
	MutablePropertyValues propertyValues = beanDefinition.getPropertyValues();
	String[] parameterNames = constructionInfo.parameterNames;
	Class[] parameterTypes = constructionInfo.parameterTypes;
	for (int i = 0; i < parameterNames.length; i++) {
	String parameterName = parameterNames[i];
	Class parameterType = parameterTypes[i];

	PropertyValue propertyValue = propertyValues.getPropertyValue(parameterName);
	if (propertyValue != null) {
	propertyValues.removePropertyValue(parameterName);
	constructorArgumentValues.addIndexedArgumentValue(i, propertyValue.getValue(), parameterType.getName());
	} else {
	Object defaultValue = defaultValues.get(new PropertyKey(parameterName, parameterType));
	if (defaultValue == null) {
	defaultValue = DEFAULT_VALUE.get(parameterType);
	}
	if (defaultValue instanceof FactoryBean) {
	try {
	defaultValue = ((FactoryBean)defaultValue).getObject();
	} catch (Exception e) {
	throw new FatalBeanException("Unable to get object value from bean factory", e);
	}
	}
	constructorArgumentValues.addIndexedArgumentValue(i, defaultValue, parameterType.getName());
	}
	}

	// todo set any usable default values on the bean definition
	}

	private ConstructionInfo selectConstructionMethod(AbstractBeanDefinition beanDefinition, MappingMetaData metadata) {
	Class beanClass = beanDefinition.getBeanClass();

	// get a set containing the names of the defined properties
	Set definedProperties = new HashSet();
	PropertyValue[] values = beanDefinition.getPropertyValues().getPropertyValues();
	for (int i = 0; i < values.length; i++) {
	definedProperties.add(values[i].getName());
	}

	// first check for a factory method
	if (beanDefinition.getFactoryMethodName() != null) {
	return selectFactory(beanClass, beanDefinition, metadata, definedProperties);
	} else {
	return selectConstructor(beanClass, metadata, definedProperties);
	}
	}

	private ConstructionInfo selectFactory(Class beanClass, AbstractBeanDefinition beanDefinition, MappingMetaData metadata, Set definedProperties) {
	String factoryMethodName = beanDefinition.getFactoryMethodName();

	// get the factory methods sorted by longest arg length first
	Method[] methods = beanClass.getMethods();
	List factoryMethods = new ArrayList(methods.length);
	for (int i = 0; i < methods.length; i++) {
	Method method = methods[i];
	if (method.getName().equals(factoryMethodName)) {
	factoryMethods.add(method);
	}
	}

	Collections.sort(factoryMethods, new ArgLengthComparator());

	// if a factory method has been annotated as the default constructor we always use that constructor
	for (Iterator iterator = factoryMethods.iterator(); iterator.hasNext();) {
	Method factoryMethod = (Method) iterator.next();

	if (metadata.isDefaultFactoryMethod(beanClass, factoryMethod)) {
	return new ConstructionInfo(beanClass, factoryMethod, metadata);
	}
	}

	// try to find a constructor for which we have all of the properties defined
	for (Iterator iterator = factoryMethods.iterator(); iterator.hasNext();) {
	Method factoryMethod = (Method) iterator.next();
	ConstructionInfo constructionInfo = new ConstructionInfo(beanClass, factoryMethod, metadata);
	if (isUsableConstructor(constructionInfo, definedProperties)) {
	return constructionInfo;
	}
	}
	return null;
	}

	private ConstructionInfo selectConstructor(Class beanClass, MappingMetaData metadata, Set definedProperties) {
	// get the constructors sorted by longest arg length first
	List constructors = new ArrayList(Arrays.asList(beanClass.getConstructors()));
	Collections.sort(constructors, new ArgLengthComparator());

	// if a constructor has been annotated as the default constructor we always use that constructor
	for (Iterator iterator = constructors.iterator(); iterator.hasNext();) {
	Constructor constructor = (Constructor) iterator.next();

	if (metadata.isDefaultConstructor(constructor)) {
	return new ConstructionInfo(constructor, metadata);
	}
	}

	// try to find a constructor for which we have all of the properties defined
	for (Iterator iterator = constructors.iterator(); iterator.hasNext();) {
	Constructor constructor = (Constructor) iterator.next();
	ConstructionInfo constructionInfo = new ConstructionInfo(constructor, metadata);
	if (isUsableConstructor(constructionInfo, definedProperties)) {
	return constructionInfo;
	}
	}
	return null;
	}

	private boolean isUsableConstructor(ConstructionInfo constructionInfo, Set definedProperties) {
	// if we don't have parameter names this is not the constructor we are looking for
	String[] parameterNames = constructionInfo.parameterNames;
	if (parameterNames == null) {
	return false;
	}

	Class[] parameterTypes = constructionInfo.parameterTypes;
	for (int i = 0; i < parameterNames.length; i++) {
	String parameterName = parameterNames[i];
	Class parameterType = parameterTypes[i];

	// can we satify this property using a defined property or default property
	if (!definedProperties.contains(parameterName) && !defaultValues.containsKey(new PropertyKey(parameterName, parameterType))) {
	return false;
	}
	}

	return true;
	}

	private class ConstructionInfo {
	private final Class[] parameterTypes;
	private final String[] parameterNames;

	public ConstructionInfo(Constructor constructor, MappingMetaData metadata) {
	this.parameterTypes = constructor.getParameterTypes();
	String[] names = metadata.getParameterNames(constructor);

	// verify that we have enough parameter names
	int expectedParameterCount = parameterTypes.length;
	if (names != null && names.length != expectedParameterCount) {
	throw new FatalBeanException("Excpected " + expectedParameterCount + " parameter names for constructor but only got " +
	names.length + ": " + constructor.toString());
	}
	if (expectedParameterCount == 0) {
	names = new String[0];
	}

	this.parameterNames = names;
	}

	public ConstructionInfo(Class beanClass, Method factoryMethod, MappingMetaData metadata) {
	this.parameterTypes = factoryMethod.getParameterTypes();

	String[] names = metadata.getParameterNames(beanClass, factoryMethod);

	// verify that we have enough parameter names
	int expectedParameterCount = parameterTypes.length;
	if (names != null && names.length != expectedParameterCount) {
	throw new FatalBeanException("Excpected " + expectedParameterCount + " parameter names for factory method but only got " +
	names.length + ": " + factoryMethod.toString());
	}
	if (expectedParameterCount == 0) {
	names = new String[0];
	}

	this.parameterNames = names;
	}
	}

	private static class ArgLengthComparator implements Comparator {
	public int compare(Object o1, Object o2) {
	return getArgLength(o2) - getArgLength(o1);
	}

	private int getArgLength(Object object) {
	if (object instanceof Method) {
	return ((Method) object).getParameterTypes().length;
	} else {
	return ((Constructor) object).getParameterTypes().length;
	}
	}
	}

	private static class PropertyKey {
	private final String name;
	private final Class type;

	public PropertyKey(String name, Class type) {
	this.name = name;
	this.type = type;
	}

	public boolean equals(Object object) {
	if (!(object instanceof PropertyKey)) {
	return false;
	}

	PropertyKey defaultProperty = (PropertyKey) object;
	return name.equals(defaultProperty.name) && type.equals(type);
	}

	public int hashCode() {
	int result = 17;
	result = 37 * result + name.hashCode();
	result = 37 * result + type.hashCode();
	return result;
	}

	public String toString() {
	return "[" + name + " " + type + "]";
	}
	}

	private static final Map DEFAULT_VALUE;
	static {
	Map temp = new HashMap();
	temp.put(Boolean.TYPE, Boolean.FALSE);
	temp.put(Byte.TYPE, new Byte((byte) 0));
	temp.put(Character.TYPE, new Character((char) 0));
	temp.put(Short.TYPE, new Short((short) 0));
	temp.put(Integer.TYPE, new Integer(0));
	temp.put(Long.TYPE, new Long(0));
	temp.put(Float.TYPE, new Float(0));
	temp.put(Double.TYPE, new Double(0));

	DEFAULT_VALUE = Collections.unmodifiableMap(temp);
	}
	}