/*******************************************************************************
 * Copyright (c) 2010, 2011 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0, which accompanies this distribution
 * and is available at http://www.eclipse.org/legal/epl-v10.html.
 *
 * Contributors:
 *     Oracle - initial API and implementation
 ******************************************************************************/
package org.eclipse.jpt.jaxb.core.internal.context.java;

import java.lang.reflect.Modifier;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jpt.common.utility.Filter;
import org.eclipse.jpt.common.utility.internal.CollectionTools;
import org.eclipse.jpt.common.utility.internal.StringTools;
import org.eclipse.jpt.common.utility.internal.iterables.ChainIterable;
import org.eclipse.jpt.common.utility.internal.iterables.EmptyIterable;
import org.eclipse.jpt.common.utility.internal.iterables.FilteringIterable;
import org.eclipse.jpt.common.utility.internal.iterables.ListIterable;
import org.eclipse.jpt.common.utility.internal.iterables.LiveCloneIterable;
import org.eclipse.jpt.jaxb.core.MappingKeys;
import org.eclipse.jpt.jaxb.core.context.JaxbContextRoot;
import org.eclipse.jpt.jaxb.core.context.JaxbPackageInfo;
import org.eclipse.jpt.jaxb.core.context.JaxbPersistentAttribute;
import org.eclipse.jpt.jaxb.core.context.JaxbPersistentClass;
import org.eclipse.jpt.jaxb.core.context.JaxbPersistentField;
import org.eclipse.jpt.jaxb.core.context.JaxbPersistentProperty;
import org.eclipse.jpt.jaxb.core.context.XmlAccessOrder;
import org.eclipse.jpt.jaxb.core.context.XmlAccessType;
import org.eclipse.jpt.jaxb.core.context.XmlAdaptable;
import org.eclipse.jpt.jaxb.core.context.XmlJavaTypeAdapter;
import org.eclipse.jpt.jaxb.core.internal.validation.DefaultValidationMessages;
import org.eclipse.jpt.jaxb.core.internal.validation.JaxbValidationMessages;
import org.eclipse.jpt.jaxb.core.resource.java.JavaResourceAnnotatedElement;
import org.eclipse.jpt.jaxb.core.resource.java.JavaResourceField;
import org.eclipse.jpt.jaxb.core.resource.java.JavaResourceMember;
import org.eclipse.jpt.jaxb.core.resource.java.JavaResourceMethod;
import org.eclipse.jpt.jaxb.core.resource.java.JavaResourceType;
import org.eclipse.jpt.jaxb.core.resource.java.XmlAccessorOrderAnnotation;
import org.eclipse.jpt.jaxb.core.resource.java.XmlAccessorTypeAnnotation;
import org.eclipse.jpt.jaxb.core.resource.java.XmlJavaTypeAdapterAnnotation;
import org.eclipse.wst.validation.internal.provisional.core.IMessage;
import org.eclipse.wst.validation.internal.provisional.core.IReporter;

public class GenericJavaPersistentClass
		extends AbstractJavaPersistentType
		implements JaxbPersistentClass {

	protected JaxbPersistentClass superPersistentClass;

	protected XmlAccessType defaultAccessType;
	protected XmlAccessType specifiedAccessType;

	protected XmlAccessOrder defaultAccessOrder;
	protected XmlAccessOrder specifiedAccessOrder;

	protected final Vector<JaxbPersistentAttribute> attributes = new Vector<JaxbPersistentAttribute>();

	protected final XmlAdaptable xmlAdaptable;

	public GenericJavaPersistentClass(JaxbContextRoot parent, JavaResourceType resourceType) {
		super(parent, resourceType);
		this.superPersistentClass = this.buildSuperPersistentClass();
		this.specifiedAccessType = this.getResourceAccessType();
		this.specifiedAccessOrder = this.getResourceAccessOrder();
		this.defaultAccessType = this.buildDefaultAccessType();
		this.defaultAccessOrder = this.buildDefaultAccessOrder();
		this.xmlAdaptable = this.buildXmlAdaptable();
		this.initializeAttributes();
	}

	@Override
	public JavaResourceType getJavaResourceType() {
		return (JavaResourceType) super.getJavaResourceType();
	}

	// ********** synchronize/update **********

	@Override
	public void synchronizeWithResourceModel() {
		super.synchronizeWithResourceModel();
		this.setSpecifiedAccessType_(this.getResourceAccessType());
		this.setSpecifiedAccessOrder_(this.getResourceAccessOrder());
		this.xmlAdaptable.synchronizeWithResourceModel();
		this.syncAttributes();
	}

	@Override
	public void update() {
		this.setSuperPersistentClass(this.buildSuperPersistentClass());
		this.setDefaultAccessType(this.buildDefaultAccessType());
		this.setDefaultAccessOrder(this.buildDefaultAccessOrder());
		this.xmlAdaptable.update();
		this.updateAttributes();
	}


	// ********** JaxbType impl **********

	public Kind getKind() {
		return Kind.PERSISTENT_CLASS;
	}
	

	// ********** super persistent class **********

	public JaxbPersistentClass getSuperPersistentClass() {
		return this.superPersistentClass;
	}

	protected void setSuperPersistentClass(JaxbPersistentClass superPersistentClass) {
		JaxbPersistentClass old = this.superPersistentClass;
		this.superPersistentClass = superPersistentClass;
		this.firePropertyChanged(SUPER_PERSISTENT_CLASS_PROPERTY, old, superPersistentClass);
	}

	protected JaxbPersistentClass buildSuperPersistentClass() {
		HashSet<JavaResourceType> visited = new HashSet<JavaResourceType>();
		visited.add(this.getJavaResourceType());
		JaxbPersistentClass spc = this.getSuperPersistentClass(this.getJavaResourceType().getSuperclassQualifiedName(), visited);
		if (spc == null) {
			return null;
		}
		if (CollectionTools.contains(spc.getInheritanceHierarchy(), this)) {
			return null;  // short-circuit in this case, we have circular inheritance
		}
		return spc;
	}

	/**
	 * The JPA spec allows non-persistent types in a persistent type's
	 * inheritance hierarchy. We check for a persistent type with the
	 * specified name in the persistence unit. If it is not found we use
	 * resource persistent type and look for *its* super type.
	 * 
	 * The 'visited' collection is used to detect a cycle in the *resource* type
	 * inheritance hierarchy and prevent the resulting stack overflow.
	 * Any cycles in the *context* type inheritance hierarchy are handled in
	 * #buildSuperPersistentType().
	 */
	protected JaxbPersistentClass getSuperPersistentClass(String typeName, Collection<JavaResourceType> visited) {
		if (typeName == null) {
			return null;
		}
		JavaResourceType resourceType = this.getJaxbProject().getJavaResourceType(typeName);
		if ((resourceType == null) || visited.contains(resourceType)) {
			return null;
		}
		visited.add(resourceType);
		JaxbPersistentClass spc = this.getPersistentClass(typeName);
		return (spc != null && resourceType.isMapped()) ? spc : this.getSuperPersistentClass(resourceType.getSuperclassQualifiedName(), visited);  // recurse
	}

	protected JaxbPersistentClass getPersistentClass(String fullyQualifiedTypeName) {
		return this.getParent().getPersistentClass(fullyQualifiedTypeName);
	}

	// ********** inheritance **********

	public Iterable<JaxbPersistentClass> getInheritanceHierarchy() {
		return this.getInheritanceHierarchyOf(this);
	}

	public Iterable<JaxbPersistentClass> getAncestors() {
		return this.getInheritanceHierarchyOf(this.superPersistentClass);
	}

	protected Iterable<JaxbPersistentClass> getInheritanceHierarchyOf(JaxbPersistentClass start) {
		// using a chain iterator to traverse up the inheritance tree
		return new ChainIterable<JaxbPersistentClass>(start) {
			@Override
			protected JaxbPersistentClass nextLink(JaxbPersistentClass persistentType) {
				return persistentType.getSuperPersistentClass();
			}
		};
	}

	// ********** access type **********

	public XmlAccessType getAccessType() {
		return (this.specifiedAccessType != null) ? this.specifiedAccessType : this.defaultAccessType;
	}

	public XmlAccessType getSpecifiedAccessType() {
		return this.specifiedAccessType;
	}

	public void setSpecifiedAccessType(XmlAccessType access) {
		this.getAccessorTypeAnnotation().setValue(XmlAccessType.toJavaResourceModel(access));
		this.setSpecifiedAccessType_(access);
	}

	protected void setSpecifiedAccessType_(XmlAccessType access) {
		XmlAccessType old = this.specifiedAccessType;
		this.specifiedAccessType = access;
		this.firePropertyChanged(SPECIFIED_ACCESS_TYPE_PROPERTY, old, access);
	}

	public XmlAccessType getDefaultAccessType() {
		return this.defaultAccessType;
	}

	protected void setDefaultAccessType(XmlAccessType access) {
		XmlAccessType old = this.defaultAccessType;
		this.defaultAccessType = access;
		this.firePropertyChanged(DEFAULT_ACCESS_TYPE_PROPERTY, old, access);
	}

	protected XmlAccessType getResourceAccessType() {
		return XmlAccessType.fromJavaResourceModel(this.getAccessorTypeAnnotation().getValue());
	}

	protected XmlAccessorTypeAnnotation getAccessorTypeAnnotation() {
		return (XmlAccessorTypeAnnotation) getJavaResourceType().getNonNullAnnotation(XmlAccessorTypeAnnotation.ANNOTATION_NAME);
	}

	/**
	 * If there is a @XmlAccessorType on a class, then it is used.
	 * Otherwise, if a @XmlAccessorType exists on one of its super classes, then it is inherited.
	 * Otherwise, the @XmlAccessorType on a package is inherited. 	
	 */
	protected XmlAccessType buildDefaultAccessType() {
		XmlAccessType superAccessType = this.getSuperPersistentClassAccessType();
		if (superAccessType != null) {
			return superAccessType;
		}
		XmlAccessType packageAccessType = getPackageAccessType();
		if (packageAccessType != null) {
			return packageAccessType;
		}
		return XmlAccessType.PUBLIC_MEMBER;
	}

	protected XmlAccessType getSuperPersistentClassAccessType() {
		JaxbPersistentClass superPersistentClass = this.getSuperPersistentClass();
		return superPersistentClass == null ? null : superPersistentClass.getSpecifiedAccessType();
	}

	protected XmlAccessType getPackageAccessType() {
		JaxbPackageInfo packageInfo = this.getPackageInfo();
		return packageInfo == null ? null : packageInfo.getAccessType();
	}


	// ********** access order **********

	public XmlAccessOrder getAccessOrder() {
		return (this.specifiedAccessOrder != null) ? this.specifiedAccessOrder : this.defaultAccessOrder;
	}

	public XmlAccessOrder getSpecifiedAccessOrder() {
		return this.specifiedAccessOrder;
	}

	public void setSpecifiedAccessOrder(XmlAccessOrder accessOrder) {
		this.getAccessorOrderAnnotation().setValue(XmlAccessOrder.toJavaResourceModel(accessOrder));
		this.setSpecifiedAccessOrder_(accessOrder);
	}

	protected void setSpecifiedAccessOrder_(XmlAccessOrder accessOrder) {
		XmlAccessOrder old = this.specifiedAccessOrder;
		this.specifiedAccessOrder = accessOrder;
		this.firePropertyChanged(SPECIFIED_ACCESS_ORDER_PROPERTY, old, accessOrder);
	}

	public XmlAccessOrder getDefaultAccessOrder() {
		return this.defaultAccessOrder;
	}

	protected void setDefaultAccessOrder(XmlAccessOrder accessOrder) {
		XmlAccessOrder old = this.defaultAccessOrder;
		this.defaultAccessOrder = accessOrder;
		this.firePropertyChanged(DEFAULT_ACCESS_ORDER_PROPERTY, old, accessOrder);
	}

	protected XmlAccessOrder getResourceAccessOrder() {
		return XmlAccessOrder.fromJavaResourceModel(this.getAccessorOrderAnnotation().getValue());
	}

	protected XmlAccessorOrderAnnotation getAccessorOrderAnnotation() {
		return (XmlAccessorOrderAnnotation) getJavaResourceType().getNonNullAnnotation(XmlAccessorOrderAnnotation.ANNOTATION_NAME);
	}

	/**
    * If there is a @XmlAccessorOrder on a class, then it is used.
    * Otherwise, if a @XmlAccessorOrder exists on one of its super classes, then it is inherited (by the virtue of Inherited)
    * Otherwise, the @XmlAccessorOrder on the package of the class is used, if it's there.
    * Otherwise XmlAccessOrder.UNDEFINED. 
  	*/
	protected XmlAccessOrder buildDefaultAccessOrder() {
		XmlAccessOrder superAccessOrder = this.getSuperPersistentClassAccessOrder();
		if (superAccessOrder != null) {
			return superAccessOrder;
		}
		XmlAccessOrder packageAccessOrder = getPackageAccessOrder();
		if (packageAccessOrder != null) {
			return packageAccessOrder;
		}
		return XmlAccessOrder.UNDEFINED;
	}

	protected XmlAccessOrder getSuperPersistentClassAccessOrder() {
		JaxbPersistentClass superPersistentClass = this.getSuperPersistentClass();
		return superPersistentClass == null ? null : superPersistentClass.getSpecifiedAccessOrder();
	}

	protected XmlAccessOrder getPackageAccessOrder() {
		JaxbPackageInfo packageInfo = this.getPackageInfo();
		return packageInfo == null ? null : packageInfo.getAccessOrder();
	}


	// ********** attributes **********

	public Iterable<JaxbPersistentAttribute> getAttributes() {
		return new LiveCloneIterable<JaxbPersistentAttribute>(this.attributes);
	}

	public int getAttributesSize() {
		return this.attributes.size();
	}

	protected void addAttribute(JaxbPersistentAttribute attribute) {
		addItemToCollection(attribute, this.attributes, ATTRIBUTES_COLLECTION);
	}

	protected void removeAttribute(JaxbPersistentAttribute attribute) {
		removeItemFromCollection(attribute, this.attributes, ATTRIBUTES_COLLECTION);
	}

	protected JaxbPersistentField buildField(JavaResourceField resourceField) {
		return getFactory().buildJavaPersistentField(this, resourceField);
	}

	protected JaxbPersistentProperty buildProperty(JavaResourceMethod resourceGetter, JavaResourceMethod resourceSetter) {
		return getFactory().buildJavaPersistentProperty(this, resourceGetter, resourceSetter);
	}

	protected void initializeAttributes() {
		if (getAccessType() == XmlAccessType.PUBLIC_MEMBER) {
			this.initializePublicMemberAccessAttributes();
		}
		else if (getAccessType() == XmlAccessType.FIELD) {
			this.intializeFieldAccessAttributes();
		}
		else if (getAccessType() == XmlAccessType.PROPERTY) {
			this.intializePropertyAccessAttributes();
		}
		else if (getAccessType() == XmlAccessType.NONE) {
			this.intializeNoneAccessAttributes();
		}
	}

	/**
	 * Initialize the attributes for XmlAccessType.PUBLIC_MEMBER
	 * 1. all public, non-static, non-transient fields (transient modifier, @XmlTransient is brought to the context model)
	 * 2. all annotated fields that aren't public
	 * 3. all public getter/setter javabeans pairs
	 * 4. all annotated methods (some will have a matching getter/setter, some will be standalone)
	 */
	private void initializePublicMemberAccessAttributes() {
		this.initializeFieldAttributes(this.buildPublicMemberAccessTypeResourceFieldsFilter());
		Collection<JavaResourceMethod> resourceMethods = CollectionTools.collection(this.getResourceMethods());
		//iterate through all persistable resource method getters
		for (JavaResourceMethod getterMethod : this.getResourceMethods(this.buildPersistablePropertyGetterMethodsFilter())) {
			JavaResourceMethod setterMethod = getValidSiblingSetMethod(getterMethod, resourceMethods);
			if (methodsArePersistablePublicMemberAccess(getterMethod, setterMethod)) {
				this.attributes.add(this.buildProperty(getterMethod, setterMethod));
			}
			resourceMethods.remove(getterMethod);
			resourceMethods.remove(setterMethod);
		}
		this.initializeRemainingResourceMethodAttributes(resourceMethods);
	}

	/**
	 * Initialize the attributes for XmlAccessType.FIELD
	 * 1. all non-transient fields
	 * 2. all annotated methods getters/setters
	 */
	private void intializeFieldAccessAttributes() {
		this.initializeFieldAttributes(this.buildNonTransientNonStaticResourceFieldsFilter());
		this.initializeAnnotatedPropertyAttributes();
	}

	/**
	 * Initialize the attributes for XmlAccessType.PROPERTY
	 * 1. all getter/setter javabeans pairs
	 * 2. all annotated fields
	 * 3. all annotated methods getters/setters that don't have a matching pair
	 */
	private void intializePropertyAccessAttributes() {
		this.initializeFieldAttributes(this.buildAnnotatedResourceFieldsFilter());

		Collection<JavaResourceMethod> resourceMethods = CollectionTools.collection(this.getResourceMethods());
		//iterate through all resource methods searching for persistable getters
		for (JavaResourceMethod getterMethod : this.getResourceMethods(this.buildPersistablePropertyGetterMethodsFilter())) {
			JavaResourceMethod setterMethod = getValidSiblingSetMethod(getterMethod, resourceMethods);
			if (methodsArePersistableProperties(getterMethod, setterMethod)) {
				this.attributes.add(this.buildProperty(getterMethod, setterMethod));
			}
			resourceMethods.remove(getterMethod);
			resourceMethods.remove(setterMethod);
		}
		this.initializeRemainingResourceMethodAttributes(resourceMethods);
	}

	/**
	 * Initialize the attributes for XmlAccessType.NONE
	 * 1. all annotated fields
	 * 2. all annotated methods getters/setters (some will have a matching getter/setter, some will be standalone)
	 */
	private void intializeNoneAccessAttributes() {
		this.initializeFieldAttributes(this.buildAnnotatedResourceFieldsFilter());
		this.initializeAnnotatedPropertyAttributes();
	}

	private void initializeFieldAttributes(Filter<JavaResourceField> filter) {
		for (JavaResourceField resourceField : this.getResourceFields(filter)) {
			this.attributes.add(this.buildField(resourceField));
		}
	}

	private void initializeRemainingResourceMethodAttributes(Collection<JavaResourceMethod> resourceMethods) {
		//iterate through remaining resource methods and search for those that are annotated.
		//all getter methods will already be used.
		for (JavaResourceMethod resourceMethod : resourceMethods) {
			if (resourceMethod.isAnnotated()) {
				//annotated setter(or other random method) with no corresponding getter, bring into context model for validation purposes
				this.attributes.add(this.buildProperty(null, resourceMethod));
			}
		}
	}

	private static boolean methodsArePersistableProperties(JavaResourceMethod getterMethod, JavaResourceMethod setterMethod) {
		if (setterMethod != null) {
			return true;
		}
		//Lists do not have to have a corresponding setter method
		else if (getterMethod.getTypeName().equals("java.util.List")) { //$NON-NLS-1$
			return true;
		}
		else if (getterMethod.isAnnotated()) {
			//annotated getter with no corresponding setter, bring into context model for validation purposes
			return true;
		}
		return false;
	}

	private static boolean methodsArePersistablePublicMemberAccess(JavaResourceMethod getterMethod, JavaResourceMethod setterMethod) {
		if (getterMethod.isPublic()) {
			if (setterMethod != null) {
				if (setterMethod.isPublic()) {
					return true;
				}
			}
			//Lists do not have to have a corresponding setter method
			else if (getterMethod.getTypeName().equals("java.util.List")) { //$NON-NLS-1$
				return true;
			}
			else if (getterMethod.isAnnotated()) {
				//annotated getter with no corresponding setter, bring into context model for validation purposes
				return true;
			}
		}
		else if (getterMethod.isAnnotated() || (setterMethod != null && setterMethod.isAnnotated())) {
			return true;
		}
		return false;
	}

	private void initializeAnnotatedPropertyAttributes() {
		Collection<JavaResourceMethod> resourceMethods = CollectionTools.collection(this.getResourceMethods());
		//iterate through all resource methods searching for persistable getters
		for (JavaResourceMethod getterMethod : this.getResourceMethods(buildPersistablePropertyGetterMethodsFilter())) {
			JavaResourceMethod setterMethod = getValidSiblingSetMethod(getterMethod, resourceMethods);
			if (getterMethod.isAnnotated() || (setterMethod != null && setterMethod.isAnnotated())) {
				this.attributes.add(this.buildProperty(getterMethod, setterMethod));
			}
			resourceMethods.remove(getterMethod);
			resourceMethods.remove(setterMethod);
		}
		this.initializeRemainingResourceMethodAttributes(resourceMethods);
	}

	protected Iterable<JavaResourceField> getResourceFields() {
		return getJavaResourceType().getFields();
	}

	protected Iterable<JavaResourceMethod> getResourceMethods() {
		return getJavaResourceType().getMethods();
	}

	protected Iterable<JavaResourceField> getResourceFields(Filter<JavaResourceField> filter) {
		return new FilteringIterable<JavaResourceField>(getResourceFields(), filter);
	}

	protected Iterable<JavaResourceMethod> getResourceMethods(Filter<JavaResourceMethod> filter) {
		return new FilteringIterable<JavaResourceMethod>(getResourceMethods(), filter);
	}

	protected Filter<JavaResourceField> buildNonTransientNonStaticResourceFieldsFilter() {
		return new Filter<JavaResourceField>() {
			public boolean accept(JavaResourceField resourceField) {
				return memberIsNonTransientNonStatic(resourceField) || resourceField.isAnnotated();
			}
		};
	}

	protected Filter<JavaResourceField> buildPublicMemberAccessTypeResourceFieldsFilter() {
		return new Filter<JavaResourceField>() {
			public boolean accept(JavaResourceField resourceField) {
				return memberIsPublicNonTransientNonStatic(resourceField) || resourceField.isAnnotated();
			}
		};
	}

	protected Filter<JavaResourceMethod> buildPersistablePropertyGetterMethodsFilter() {
		return new Filter<JavaResourceMethod>() {
			public boolean accept(JavaResourceMethod resourceMethod) {
				return methodIsPersistablePropertyGetter(resourceMethod, getResourceMethods());
			}
		};
	}

	protected static boolean memberIsPublicNonTransientNonStatic(JavaResourceMember resourceMember) {
		return resourceMember.isPublic() && memberIsNonTransientNonStatic(resourceMember);
	}

	protected static boolean memberIsNonTransientNonStatic(JavaResourceMember resourceMember) {
		return !resourceMember.isTransient() && !resourceMember.isStatic();
	}

	protected Filter<JavaResourceField> buildAnnotatedResourceFieldsFilter() {
		return new Filter<JavaResourceField>() {
			public boolean accept(JavaResourceField resourceField) {
				return resourceField.isAnnotated();
			}
		};
	}

	protected void syncAttributes() {
		if (getAccessType() == XmlAccessType.PUBLIC_MEMBER) {
			this.syncPublicMemberAccessAttributes();
		}
		else if (getAccessType() == XmlAccessType.FIELD) {
			this.syncFieldAccessAttributes();
		}
		else if (getAccessType() == XmlAccessType.PROPERTY) {
			this.syncPropertyAccessAttributes();
		}
		else if (getAccessType() == XmlAccessType.NONE) {
			this.syncNoneAccessAttributes();
		}
	}

	/**
	 * Sync the attributes for XmlAccessType.PUBLIC_MEMBER
	 * 1. all public, non-static, non-transient fields (transient modifier, @XmlTransient is brought to the context model)
	 * 2. all annotated fields that aren't public
	 * 3. all public getter/setter javabeans pairs
	 * 4. all annotated methods (some will have a matching getter/setter, some will be standalone)
	 */
	private void syncPublicMemberAccessAttributes() {
		HashSet<JaxbPersistentAttribute> contextAttributes = CollectionTools.set(this.getAttributes());

		this.syncFieldAttributes(contextAttributes, this.buildPublicMemberAccessTypeResourceFieldsFilter());

		Collection<JavaResourceMethod> resourceMethods = CollectionTools.collection(this.getResourceMethods());
		//iterate through all persistable resource method getters
		for (JavaResourceMethod getterMethod : this.getResourceMethods(this.buildPersistablePropertyGetterMethodsFilter())) {
			JavaResourceMethod setterMethod = getValidSiblingSetMethod(getterMethod, resourceMethods);
			if (methodsArePersistablePublicMemberAccess(getterMethod, setterMethod)) {
				boolean match = false;
				for (Iterator<JaxbPersistentAttribute> stream = contextAttributes.iterator(); stream.hasNext();) {
					JaxbPersistentAttribute contextAttribute = stream.next();
					if (contextAttribute.isFor(getterMethod, setterMethod)) {
						match = true;
						contextAttribute.synchronizeWithResourceModel();
						stream.remove();
						break;
					}
				}
				if (!match) {
					this.addAttribute(this.buildProperty(getterMethod, setterMethod));
				}
				resourceMethods.remove(getterMethod);
				resourceMethods.remove(setterMethod);
			}
		}
		this.syncRemainingResourceMethods(contextAttributes, resourceMethods);
	}

	/**
	 * Initialize the attributes for XmlAccessType.FIELD
	 * 1. all non-transient fields
	 * 2. all annotated methods getters/setters
	 */
	private void syncFieldAccessAttributes() {
		HashSet<JaxbPersistentAttribute> contextAttributes = CollectionTools.set(this.getAttributes());

		this.syncFieldAttributes(contextAttributes, this.buildNonTransientNonStaticResourceFieldsFilter());
		this.syncAnnotatedPropertyAttributes(contextAttributes);
	}

	/**
	 * Initialize the attributes for XmlAccessType.PROPERTY
	 * 1. all getter/setter javabeans pairs
	 * 2. all annotated fields
	 * 3. all annotated methods getters/setters that don't have a matching pair
	 */
	private void syncPropertyAccessAttributes() {
		HashSet<JaxbPersistentAttribute> contextAttributes = CollectionTools.set(this.getAttributes());

		this.syncFieldAttributes(contextAttributes, this.buildAnnotatedResourceFieldsFilter());

		Collection<JavaResourceMethod> resourceMethods = CollectionTools.collection(this.getResourceMethods());
		//iterate through all resource methods searching for persistable getters
		for (JavaResourceMethod getterMethod : this.getResourceMethods(this.buildPersistablePropertyGetterMethodsFilter())) {
			JavaResourceMethod setterMethod = getValidSiblingSetMethod(getterMethod, resourceMethods);
			if (methodsArePersistableProperties(getterMethod, setterMethod)) {
				boolean match = false;
				for (Iterator<JaxbPersistentAttribute> stream = contextAttributes.iterator(); stream.hasNext();) {
					JaxbPersistentAttribute contextAttribute = stream.next();
					if (contextAttribute.isFor(getterMethod, setterMethod)) {
						match = true;
						contextAttribute.synchronizeWithResourceModel();
						stream.remove();
						break;
					}
				}
				if (!match) {
					this.addAttribute(this.buildProperty(getterMethod, setterMethod));
				}
			}
			resourceMethods.remove(getterMethod);
			resourceMethods.remove(setterMethod);
		}
		this.syncRemainingResourceMethods(contextAttributes, resourceMethods);
	}

	/**
	 * Initialize the attributes for XmlAccessType.NONE
	 * 1. all annotated fields
	 * 2. all annotated methods getters/setters (some will have a matching getter/setter, some will be standalone)
	 */
	private void syncNoneAccessAttributes() {
		HashSet<JaxbPersistentAttribute> contextAttributes = CollectionTools.set(this.getAttributes());

		this.syncFieldAttributes(contextAttributes, this.buildAnnotatedResourceFieldsFilter());
		this.syncAnnotatedPropertyAttributes(contextAttributes);
	}

	private void syncAnnotatedPropertyAttributes(HashSet<JaxbPersistentAttribute> contextAttributes) {
		Collection<JavaResourceMethod> resourceMethods = CollectionTools.collection(this.getResourceMethods());
		//iterate through all resource methods searching for persistable getters
		for (JavaResourceMethod getterMethod : this.getResourceMethods(buildPersistablePropertyGetterMethodsFilter())) {
			JavaResourceMethod setterMethod = getValidSiblingSetMethod(getterMethod, resourceMethods);
			if (getterMethod.isAnnotated() || (setterMethod != null && setterMethod.isAnnotated())) {
				boolean match = false;
				for (Iterator<JaxbPersistentAttribute> stream = contextAttributes.iterator(); stream.hasNext();) {
					JaxbPersistentAttribute contextAttribute = stream.next();
					if (contextAttribute.isFor(getterMethod, setterMethod)) {
						match = true;
						contextAttribute.synchronizeWithResourceModel();
						stream.remove();
						break;
					}
				}
				if (!match) {
					this.addAttribute(this.buildProperty(getterMethod, setterMethod));
				}
			}
			resourceMethods.remove(getterMethod);
			resourceMethods.remove(setterMethod);
		}
		this.syncRemainingResourceMethods(contextAttributes, resourceMethods);
	}

	private void syncFieldAttributes(HashSet<JaxbPersistentAttribute> contextAttributes, Filter<JavaResourceField> filter) {
		for (JavaResourceField resourceField : this.getResourceFields(filter)) {
			boolean match = false;
			for (Iterator<JaxbPersistentAttribute> stream = contextAttributes.iterator(); stream.hasNext(); ) {
				JaxbPersistentAttribute contextAttribute = stream.next();
				if (contextAttribute.isFor(resourceField)) {
					match = true;
					contextAttribute.synchronizeWithResourceModel();
					stream.remove();
					break;
				}
			}
			if (!match) {
				// added elements are sync'ed during construction or will be
				// updated during the next "update" (which is triggered by
				// their addition to the model)
				this.addAttribute(this.buildField(resourceField));
			}
		}
	}

	private void syncRemainingResourceMethods(HashSet<JaxbPersistentAttribute> contextAttributes, Collection<JavaResourceMethod> resourceMethods) {
		//iterate through remaining resource methods and search for those that are annotated.
		//all getter methods will already be used.
		for (JavaResourceMethod resourceMethod : resourceMethods) {
			if (resourceMethod.isAnnotated()) {
				boolean match = false;
				//annotated setter(or other random method) with no corresponding getter, bring into context model for validation purposes
				for (Iterator<JaxbPersistentAttribute> stream = contextAttributes.iterator(); stream.hasNext();) {
					JaxbPersistentAttribute contextAttribute = stream.next();
					if (contextAttribute.isFor(null, resourceMethod)) {
						match = true;
						contextAttribute.synchronizeWithResourceModel();
						stream.remove();
						break;
					}
				}
				if (!match) {
					this.addAttribute(this.buildProperty(null, resourceMethod));
				}
			}
		}

		// remove any leftover context attributes
		for (JaxbPersistentAttribute contextAttribute : contextAttributes) {
			this.removeAttribute(contextAttribute);
		}
	}

	protected void updateAttributes() {
		this.updateNodes(this.attributes);
	}

	/**
	 * Return whether the specified method is a "getter" method that
	 * represents a property that may be "persisted".
	 */
	protected static boolean methodIsPersistablePropertyGetter(JavaResourceMethod resourceMethod, Iterable<JavaResourceMethod> allMethods) {
		if (methodHasInvalidModifiers(resourceMethod)) {
			return false;
		}
		if (resourceMethod.isConstructor()) {
			return false;
		}

		String returnTypeName = resourceMethod.getTypeName();
		if (returnTypeName == null) {
			return false;  // DOM method bindings can have a null name
		}
		if (returnTypeName.equals("void")) { //$NON-NLS-1$
			return false;
		}
		if (methodHasParameters(resourceMethod)) {
			return false;
		}

		boolean booleanGetter = methodIsBooleanGetter(resourceMethod);

		// if the type has both methods:
		//     boolean isProperty()
		//     boolean getProperty()
		// then #isProperty() takes precedence and we ignore #getProperty();
		// but only having #getProperty() is OK too
		// (see the JavaBeans spec 1.01)
		if (booleanGetter && methodHasValidSiblingIsMethod(resourceMethod, allMethods)) {
			return false;  // since the type also defines #isProperty(), ignore #getProperty()
		}
		return true;
	}

	private static boolean methodIsBooleanGetter(JavaResourceMethod resourceMethod) {
		String returnTypeName = resourceMethod.getTypeName();
		String name = resourceMethod.getMethodName();
		boolean booleanGetter = false;
		if (name.startsWith("is")) { //$NON-NLS-1$
			if (returnTypeName.equals("boolean")) { //$NON-NLS-1$
			} else {
				return false;
			}
		} else if (name.startsWith("get")) { //$NON-NLS-1$
			if (returnTypeName.equals("boolean")) { //$NON-NLS-1$
				booleanGetter = true;
			}
		} else {
			return false;
		}
		return booleanGetter;
	}

	/**
	 * Return whether the method's modifiers prevent it
	 * from being a getter or setter for a "persistent" property.
	 */
	private static boolean methodHasInvalidModifiers(JavaResourceMethod resourceMethod) {
		int modifiers = resourceMethod.getModifiers();
		if (Modifier.isStatic(modifiers)) {
			return true;
		}
		return false;
	}

	private static boolean methodHasParameters(JavaResourceMethod resourceMethod) {
		return resourceMethod.getParametersSize() != 0;
	}

	/**
	 * Return whether the method has a sibling "is" method for the specified
	 * property and that method is valid for a "persistable" property.
	 * Pre-condition: the method is a "boolean getter" (e.g. 'public boolean getProperty()');
	 * this prevents us from returning true when the method itself is an
	 * "is" method.
	 */
	private static boolean methodHasValidSiblingIsMethod(JavaResourceMethod getMethod, Iterable<JavaResourceMethod> resourceMethods) {
		String capitalizedAttributeName = StringTools.capitalize(getMethod.getName());
		for (JavaResourceMethod sibling : resourceMethods) {
			if ((sibling.getParametersSize() == 0)
					&& sibling.getMethodName().equals("is" + capitalizedAttributeName)) { //$NON-NLS-1$
				return methodIsValidSibling(sibling, "boolean"); //$NON-NLS-1$
			}
		}
		return false;
	}

	/**
	 * Return whether the method has a sibling "set" method
	 * and that method is valid for a "persistable" property.
	 */
	private static JavaResourceMethod getValidSiblingSetMethod(JavaResourceMethod getMethod, Collection<JavaResourceMethod> resourceMethods) {
		String capitalizedAttributeName = StringTools.capitalize(getMethod.getName());
		String parameterTypeErasureName = getMethod.getTypeName();
		for (JavaResourceMethod sibling : resourceMethods) {
			ListIterable<String> siblingParmTypeNames = sibling.getParameterTypeNames();
			if ((sibling.getParametersSize() == 1)
				&& sibling.getMethodName().equals("set" + capitalizedAttributeName) //$NON-NLS-1$
				&& siblingParmTypeNames.iterator().next().equals(parameterTypeErasureName)) {
				return methodIsValidSibling(sibling, "void") ? sibling : null; //$NON-NLS-1$
			}
		}
		return null;
	}

	/**
	 * Return whether the specified method is a valid sibling with the
	 * specified return type.
	 */
	private static boolean methodIsValidSibling(JavaResourceMethod resourceMethod, String returnTypeName) {
		if (resourceMethod == null) {
			return false;
		}
		if (methodHasInvalidModifiers(resourceMethod)) {
			return false;
		}
		if (resourceMethod.isConstructor()) {
			return false;
		}
		String rtName = resourceMethod.getTypeName();
		if (rtName == null) {
			return false;  // DOM method bindings can have a null name
		}
		return rtName.equals(returnTypeName);
	}


	//****************** XmlJavaTypeAdapter *********************

	public XmlAdaptable buildXmlAdaptable() {
		return new GenericJavaXmlAdaptable(this, new XmlAdaptable.Owner() {
			public JavaResourceAnnotatedElement getResource() {
				return getJavaResourceType();
			}
			public XmlJavaTypeAdapter buildXmlJavaTypeAdapter(XmlJavaTypeAdapterAnnotation adapterAnnotation) {
				return GenericJavaPersistentClass.this.buildXmlJavaTypeAdapter(adapterAnnotation);
			}
			public void fireXmlAdapterChanged(XmlJavaTypeAdapter oldAdapter, XmlJavaTypeAdapter newAdapter) {
				GenericJavaPersistentClass.this.firePropertyChanged(XML_JAVA_TYPE_ADAPTER_PROPERTY, oldAdapter, newAdapter);
			}
		});
	}

	public XmlJavaTypeAdapter getXmlJavaTypeAdapter() {
		return this.xmlAdaptable.getXmlJavaTypeAdapter();
	}

	public XmlJavaTypeAdapter addXmlJavaTypeAdapter() {
		return this.xmlAdaptable.addXmlJavaTypeAdapter();
	}

	protected XmlJavaTypeAdapter buildXmlJavaTypeAdapter(XmlJavaTypeAdapterAnnotation xmlJavaTypeAdapterAnnotation) {
		return new GenericJavaTypeXmlJavaTypeAdapter(this, xmlJavaTypeAdapterAnnotation);
	}

	public void removeXmlJavaTypeAdapter() {
		this.xmlAdaptable.removeXmlJavaTypeAdapter();
	}

	// ********** content assist **********

	@Override
	public Iterable<String> getJavaCompletionProposals(int pos, Filter<String> filter, CompilationUnit astRoot) {
		Iterable<String> result = super.getJavaCompletionProposals(pos, filter, astRoot);
		if (!CollectionTools.isEmpty(result)) {
			return result;
		}
		for (JaxbPersistentAttribute attribute : this.getAttributes()) {
			result = attribute.getJavaCompletionProposals(pos, filter, astRoot);
			if (!CollectionTools.isEmpty(result)) {
				return result;
			}
		}
		return EmptyIterable.instance();
	}

	// ********** validation **********

	@Override
	public void validate(List<IMessage> messages, IReporter reporter, CompilationUnit astRoot) {
		super.validate(messages, reporter, astRoot);
		this.xmlAdaptable.validate(messages, reporter, astRoot);
		this.validateXmlAnyAttributeMapping(messages, astRoot);
		this.validateXmlAnyElementMapping(messages, astRoot);
		this.validateXmlValueMapping(messages, astRoot);
		for (JaxbPersistentAttribute attribute : getAttributes()) {
			attribute.validate(messages, reporter, astRoot);
		}
	}

	protected void validateXmlValueMapping(List<IMessage> messages, CompilationUnit astRoot) {
		String xmlValueMapping = null;
		for (JaxbPersistentAttribute attribute : getAttributes()) {
			if (attribute.getMappingKey() == MappingKeys.XML_VALUE_ATTRIBUTE_MAPPING_KEY) {
				if (xmlValueMapping != null) {
					messages.add(
						DefaultValidationMessages.buildMessage(
							IMessage.HIGH_SEVERITY,
							JaxbValidationMessages.MULTIPLE_XML_VALUE_MAPPINGS_DEFINED,
							new String[] {attribute.getName(), xmlValueMapping},
							attribute.getMapping(),
							attribute.getMapping().getValidationTextRange(astRoot)));
				}
				else {
					xmlValueMapping = attribute.getName();
				}
			}
		}
		if (xmlValueMapping != null) {
			for (JaxbPersistentAttribute attribute : getAttributes()) {
				if (attribute.getName() != xmlValueMapping) {
					if (attribute.getMappingKey() != MappingKeys.XML_ATTRIBUTE_ATTRIBUTE_MAPPING_KEY 
						&& attribute.getMappingKey() != MappingKeys.XML_TRANSIENT_ATTRIBUTE_MAPPING_KEY) {
						messages.add(
							DefaultValidationMessages.buildMessage(
								IMessage.HIGH_SEVERITY,
								JaxbValidationMessages.XML_VALUE_MAPPING_WITH_NON_XML_ATTRIBUTE_MAPPING_DEFINED,
								new String[] {attribute.getName(), xmlValueMapping},
								attribute.getMapping(),
								attribute.getMapping().getValidationTextRange(astRoot)));					
					}
				}
			}
		}
	}

	protected void validateXmlAnyAttributeMapping(List<IMessage> messages, CompilationUnit astRoot) {
		String xmlAnyAttributeMapping = null;
		for (JaxbPersistentAttribute attribute : getAttributes()) {
			if (attribute.getMappingKey() == MappingKeys.XML_ANY_ATTRIBUTE_ATTRIBUTE_MAPPING_KEY) {
				if (xmlAnyAttributeMapping != null) {
					messages.add(
						DefaultValidationMessages.buildMessage(
							IMessage.HIGH_SEVERITY,
							JaxbValidationMessages.MULTIPLE_XML_ANY_ATTRIBUTE_MAPPINGS_DEFINED,
							new String[] {attribute.getName(), xmlAnyAttributeMapping},
							attribute.getMapping(),
							attribute.getMapping().getValidationTextRange(astRoot)));
				}
				else {
					xmlAnyAttributeMapping = attribute.getName();
				}
			}
		}
	}

	protected void validateXmlAnyElementMapping(List<IMessage> messages, CompilationUnit astRoot) {
		String xmlAnyElementMapping = null;
		for (JaxbPersistentAttribute attribute : getAttributes()) {
			if (attribute.getMappingKey() == MappingKeys.XML_ANY_ELEMENT_ATTRIBUTE_MAPPING_KEY) {
				if (xmlAnyElementMapping != null) {
					messages.add(
						DefaultValidationMessages.buildMessage(
							IMessage.HIGH_SEVERITY,
							JaxbValidationMessages.MULTIPLE_XML_ANY_ELEMENT_MAPPINGS_DEFINED,
							new String[] {attribute.getName(), xmlAnyElementMapping},
							attribute.getMapping(),
							attribute.getMapping().getValidationTextRange(astRoot)));
				}
				else {
					xmlAnyElementMapping = attribute.getName();
				}
			}
		}
	}
}