jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/context/java/AbstractJavaSingleRelationshipMapping.java - dali/webtools.dali - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006, 2009 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.core.internal.context.java;

 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 import java.util.ListIterator;
 import org.eclipse.jdt.core.dom.CompilationUnit;
 import org.eclipse.jpt.core.context.BaseJoinColumn;
 import org.eclipse.jpt.core.context.Entity;
 import org.eclipse.jpt.core.context.FetchType;
 import org.eclipse.jpt.core.context.JoinColumn;
 import org.eclipse.jpt.core.context.Nullable;
 import org.eclipse.jpt.core.context.RelationshipMapping;
 import org.eclipse.jpt.core.context.TypeMapping;
 import org.eclipse.jpt.core.context.java.JavaJoinColumn;
 import org.eclipse.jpt.core.context.java.JavaPersistentAttribute;
 import org.eclipse.jpt.core.context.java.JavaSingleRelationshipMapping;
 import org.eclipse.jpt.core.internal.resource.java.NullJoinColumn;
 import org.eclipse.jpt.core.internal.validation.DefaultJpaValidationMessages;
 import org.eclipse.jpt.core.internal.validation.JpaValidationMessages;
 import org.eclipse.jpt.core.resource.java.JoinColumnAnnotation;
 import org.eclipse.jpt.core.resource.java.JoinColumnsAnnotation;
 import org.eclipse.jpt.core.resource.java.NestableAnnotation;
 import org.eclipse.jpt.core.resource.java.RelationshipMappingAnnotation;
 import org.eclipse.jpt.core.utility.TextRange;
 import org.eclipse.jpt.db.Table;
 import org.eclipse.jpt.utility.Filter;
 import org.eclipse.jpt.utility.internal.CollectionTools;
 import org.eclipse.jpt.utility.internal.iterators.CloneListIterator;
 import org.eclipse.jpt.utility.internal.iterators.EmptyListIterator;
 import org.eclipse.jpt.utility.internal.iterators.SingleElementListIterator;
 import org.eclipse.wst.validation.internal.provisional.core.IMessage;

 /**
  *
  */
 public abstract class AbstractJavaSingleRelationshipMapping<T extends RelationshipMappingAnnotation>
 	extends AbstractJavaRelationshipMapping<T>
 	implements JavaSingleRelationshipMapping
 {

 	protected final List<JavaJoinColumn> specifiedJoinColumns;
 	protected JavaJoinColumn defaultJoinColumn;

 	protected Boolean specifiedOptional;


 	protected AbstractJavaSingleRelationshipMapping(JavaPersistentAttribute parent) {
 		super(parent);
 		this.specifiedJoinColumns = new ArrayList<JavaJoinColumn>();
 	}


 	// ********** join columns **********

 	public ListIterator<JavaJoinColumn> joinColumns() {
 		return this.containsSpecifiedJoinColumns() ? this.specifiedJoinColumns() : this.defaultJoinColumns();
 	}

 	public int joinColumnsSize() {
 		return this.containsSpecifiedJoinColumns() ? this.specifiedJoinColumnsSize() : this.defaultJoinColumnsSize();
 	}

 	public ListIterator<JavaJoinColumn> specifiedJoinColumns() {
 		return new CloneListIterator<JavaJoinColumn>(this.specifiedJoinColumns);
 	}

 	public int specifiedJoinColumnsSize() {
 		return this.specifiedJoinColumns.size();
 	}

 	public boolean containsSpecifiedJoinColumns() {
 		return ! this.specifiedJoinColumns.isEmpty();
 	}

 	public JavaJoinColumn addSpecifiedJoinColumn(int index) {
 		JavaJoinColumn oldDefaultJoinColumn = this.defaultJoinColumn;
 		if (oldDefaultJoinColumn != null) {
 			//null the default join column now if one already exists.
 			//if one does not exist, there is already a specified join column.
 			//Remove it now so that it doesn't get removed during an update and
 			//cause change notifications to be sent to the UI in the wrong order
 			this.defaultJoinColumn = null;
 		}
 		JavaJoinColumn joinColumn = this.getJpaFactory().buildJavaJoinColumn(this, this.createJoinColumnOwner());
 		this.specifiedJoinColumns.add(index, joinColumn);
 		JoinColumnAnnotation joinColumnAnnotation = (JoinColumnAnnotation) this.getResourcePersistentAttribute().addSupportingAnnotation(index, JoinColumnAnnotation.ANNOTATION_NAME, JoinColumnsAnnotation.ANNOTATION_NAME);
 		joinColumn.initialize(joinColumnAnnotation);
 		this.fireItemAdded(SPECIFIED_JOIN_COLUMNS_LIST, index, joinColumn);
 		if (oldDefaultJoinColumn != null) {
 			this.firePropertyChanged(DEFAULT_JOIN_COLUMN, oldDefaultJoinColumn, null);
 		}
 		return joinColumn;
 	}

 	protected void addSpecifiedJoinColumn(int index, JavaJoinColumn joinColumn) {
 		this.addItemToList(index, joinColumn, this.specifiedJoinColumns, SPECIFIED_JOIN_COLUMNS_LIST);
 	}

 	protected void addSpecifiedJoinColumn(JavaJoinColumn joinColumn) {
 		this.addSpecifiedJoinColumn(this.specifiedJoinColumns.size(), joinColumn);
 	}

 	public void removeSpecifiedJoinColumn(JoinColumn joinColumn) {
 		this.removeSpecifiedJoinColumn(this.specifiedJoinColumns.indexOf(joinColumn));
 	}

 	public void removeSpecifiedJoinColumn(int index) {
 		JavaJoinColumn removedJoinColumn = this.specifiedJoinColumns.remove(index);
 		if (this.specifiedJoinColumns.isEmpty()) {
 			//create the defaultJoinColumn now or this will happen during project update
 			//after removing the join column from the resource model. That causes problems
 			//in the UI because the change notifications end up in the wrong order.
 			this.defaultJoinColumn = this.buildJoinColumn(new NullJoinColumn(this.getResourcePersistentAttribute()));
 		}
 		this.getResourcePersistentAttribute().removeSupportingAnnotation(index, JoinColumnAnnotation.ANNOTATION_NAME, JoinColumnsAnnotation.ANNOTATION_NAME);
 		this.fireItemRemoved(SPECIFIED_JOIN_COLUMNS_LIST, index, removedJoinColumn);
 		if (this.defaultJoinColumn != null) {
 			//fire change notification if a defaultJoinColumn was created above
 			this.firePropertyChanged(DEFAULT_JOIN_COLUMN, null, this.defaultJoinColumn);
 		}
 	}

 	protected void removeSpecifiedJoinColumn_(JavaJoinColumn joinColumn) {
 		this.removeItemFromList(joinColumn, this.specifiedJoinColumns, SPECIFIED_JOIN_COLUMNS_LIST);
 	}

 	public void moveSpecifiedJoinColumn(int targetIndex, int sourceIndex) {
 		CollectionTools.move(this.specifiedJoinColumns, targetIndex, sourceIndex);
 		this.getResourcePersistentAttribute().moveSupportingAnnotation(targetIndex, sourceIndex, JoinColumnsAnnotation.ANNOTATION_NAME);
 		this.fireItemMoved(SPECIFIED_JOIN_COLUMNS_LIST, targetIndex, sourceIndex);
 	}

 	public JavaJoinColumn getDefaultJoinColumn() {
 		return this.defaultJoinColumn;
 	}

 	protected void setDefaultJoinColumn(JavaJoinColumn column) {
 		JavaJoinColumn old = this.defaultJoinColumn;
 		this.defaultJoinColumn = column;
 		this.firePropertyChanged(DEFAULT_JOIN_COLUMN, old, column);
 	}

 	protected ListIterator<JavaJoinColumn> defaultJoinColumns() {
 		if (this.defaultJoinColumn != null) {
 			return new SingleElementListIterator<JavaJoinColumn>(this.defaultJoinColumn);
 		}
 		return EmptyListIterator.instance();
 	}

 	protected int defaultJoinColumnsSize() {
 		return (this.defaultJoinColumn == null) ? 0 : 1;
 	}


 	// ********** optional **********

 	public boolean isOptional() {
 		return (this.specifiedOptional != null) ? this.specifiedOptional.booleanValue() : this.isDefaultOptional();
 	}

 	public Boolean getSpecifiedOptional() {
 		return this.specifiedOptional;
 	}

 	public void setSpecifiedOptional(Boolean optional) {
 		Boolean old = this.specifiedOptional;
 		this.specifiedOptional = optional;
 		this.setOptionalOnResourceModel(optional);
 		this.firePropertyChanged(Nullable.SPECIFIED_OPTIONAL_PROPERTY, old, optional);
 	}

 	protected void setSpecifiedOptional_(Boolean optional) {
 		Boolean old = this.specifiedOptional;
 		this.specifiedOptional = optional;
 		this.firePropertyChanged(Nullable.SPECIFIED_OPTIONAL_PROPERTY, old, optional);
 	}

 	public boolean isDefaultOptional() {
 		return Nullable.DEFAULT_OPTIONAL;
 	}

 	protected abstract void setOptionalOnResourceModel(Boolean newOptional);


 	// ********** resource => context **********

 	@Override
 	protected void initialize() {
 		super.initialize();
 		this.initializeSpecifiedJoinColumns();
 		this.initializeDefaultJoinColumn();
 		this.specifiedOptional = this.getResourceOptional();
 	}

 	protected void initializeSpecifiedJoinColumns() {
 		ListIterator<NestableAnnotation> annotations = this.resourcePersistentAttribute.supportingAnnotations(JoinColumnAnnotation.ANNOTATION_NAME, JoinColumnsAnnotation.ANNOTATION_NAME);

 		while(annotations.hasNext()) {
 			this.specifiedJoinColumns.add(buildJoinColumn((JoinColumnAnnotation) annotations.next()));
 		}
 	}

 	protected void initializeDefaultJoinColumn() {
 		if (this.shouldBuildDefaultJoinColumn()) {
 			this.defaultJoinColumn = this.buildJoinColumn(new NullJoinColumn(this.resourcePersistentAttribute));
 		}
 	}

 	protected boolean shouldBuildDefaultJoinColumn() {
 		return ! this.containsSpecifiedJoinColumns() && this.isRelationshipOwner();
 	}

 	@Override
 	protected void update() {
 		super.update();
 		this.updateSpecifiedJoinColumns();
 		this.updateDefaultJoinColumn();
 		this.setSpecifiedOptional_(this.getResourceOptional());
 	}

 	protected abstract Boolean getResourceOptional();


 	protected void updateSpecifiedJoinColumns() {
 		ListIterator<JavaJoinColumn> joinColumns = specifiedJoinColumns();
 		ListIterator<NestableAnnotation> resourceJoinColumns = this.resourcePersistentAttribute.supportingAnnotations(JoinColumnAnnotation.ANNOTATION_NAME, JoinColumnsAnnotation.ANNOTATION_NAME);

 		while (joinColumns.hasNext()) {
 			JavaJoinColumn joinColumn = joinColumns.next();
 			if (resourceJoinColumns.hasNext()) {
 				joinColumn.update((JoinColumnAnnotation) resourceJoinColumns.next());
 			}
 			else {
 				removeSpecifiedJoinColumn_(joinColumn);
 			}
 		}

 		while (resourceJoinColumns.hasNext()) {
 			addSpecifiedJoinColumn(buildJoinColumn((JoinColumnAnnotation) resourceJoinColumns.next()));
 		}
 	}

 	protected void updateDefaultJoinColumn() {
 		if (this.shouldBuildDefaultJoinColumn()) {
 			JoinColumnAnnotation jcAnnotation = new NullJoinColumn(this.resourcePersistentAttribute);
 			if (this.defaultJoinColumn == null) {
 				this.setDefaultJoinColumn(this.buildJoinColumn(jcAnnotation));
 			} else {
 				this.defaultJoinColumn.update(jcAnnotation);
 			}
 		} else {
 			this.setDefaultJoinColumn(null);
 		}
 	}

 	protected JavaJoinColumn buildJoinColumn(JoinColumnAnnotation joinColumnResource) {
 		JavaJoinColumn joinColumn = getJpaFactory().buildJavaJoinColumn(this, createJoinColumnOwner());
 		joinColumn.initialize(joinColumnResource);
 		return joinColumn;
 	}

 	protected JavaJoinColumn.Owner createJoinColumnOwner() {
 		return new JoinColumnOwner();
 	}

 	/**
 	 * eliminate any "container" types
 	 */
 	@Override
 	protected String buildDefaultTargetEntity() {
 		if (this.resourcePersistentAttribute.typeIsContainer()) {
 			return null;
 		}
 		return this.resourcePersistentAttribute.getQualifiedReferenceEntityTypeName();
 	}


 	// ********** Fetchable implementation **********

 	public FetchType getDefaultFetch() {
 		return DEFAULT_FETCH_TYPE;
 	}


 	// ********** Java completion proposals **********

 	@Override
 	public Iterator<String> javaCompletionProposals(int pos, Filter<String> filter, CompilationUnit astRoot) {
 		Iterator<String> result = super.javaCompletionProposals(pos, filter, astRoot);
 		if (result != null) {
 			return result;
 		}
 		for (JavaJoinColumn column : CollectionTools.iterable(this.joinColumns())) {
 			result = column.javaCompletionProposals(pos, filter, astRoot);
 			if (result != null) {
 				return result;
 			}
 		}
 		return null;
 	}


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

 	@Override
 	public void validate(List<IMessage> messages, CompilationUnit astRoot) {
 		super.validate(messages, astRoot);

 		if (this.connectionProfileIsActive()) {
 			this.validateJoinColumns(messages, astRoot);
 		}
 	}

 	// 192287 - We don't want join column validation errors on the non-owning side
 	// of a bidirectional relationship. This is a low risk fix for RC3, but a better
 	// solution would be to not have the default join columns on the non-owning side.
 	// This would fix another bug that we show default join columns in this situation.
 	protected void validateJoinColumns(List<IMessage> messages, CompilationUnit astRoot) {
 		if (this.ownerIsEntity() && this.isRelationshipOwner()) {
 			for (Iterator<JavaJoinColumn> stream = this.joinColumns(); stream.hasNext(); ) {
 				this.validateJoinColumn(stream.next(), messages, astRoot);
 			}
 		}
 	}

 	protected void validateJoinColumn(JavaJoinColumn joinColumn, List<IMessage> messages, CompilationUnit astRoot) {
 		if (this.getTypeMapping().tableNameIsInvalid(joinColumn.getTable())) {
 			messages.add(
 				DefaultJpaValidationMessages.buildMessage(
 					IMessage.HIGH_SEVERITY,
 					JpaValidationMessages.JOIN_COLUMN_UNRESOLVED_TABLE,
 					new String[] {joinColumn.getTable(), joinColumn.getName()},
 					joinColumn,
 					joinColumn.getTableTextRange(astRoot)
 				)
 			);
 			return;
 		}

 		if ( ! joinColumn.isResolved()) {
 			messages.add(
 				DefaultJpaValidationMessages.buildMessage(
 					IMessage.HIGH_SEVERITY,
 					JpaValidationMessages.JOIN_COLUMN_UNRESOLVED_NAME,
 					new String[] {joinColumn.getName()},
 					joinColumn,
 					joinColumn.getNameTextRange(astRoot)
 				)
 			);
 		}

 		if ( ! joinColumn.isReferencedColumnResolved()) {
 			messages.add(
 				DefaultJpaValidationMessages.buildMessage(
 					IMessage.HIGH_SEVERITY,
 					JpaValidationMessages.JOIN_COLUMN_REFERENCED_COLUMN_UNRESOLVED_NAME,
 					new String[] {joinColumn.getReferencedColumnName(), joinColumn.getName()},
 					joinColumn,
 					joinColumn.getReferencedColumnNameTextRange(astRoot)
 				)
 			);
 		}
 	}


 	// ********** join column owner adapter **********

 	public class JoinColumnOwner implements JavaJoinColumn.Owner {

 		public JoinColumnOwner() {
 			super();
 		}

 		/**
 		 * by default, the join column is in the type mapping's primary table
 		 */
 		public String getDefaultTableName() {
 			return AbstractJavaSingleRelationshipMapping.this.getTypeMapping().getPrimaryTableName();
 		}

 		public Entity getTargetEntity() {
 			return AbstractJavaSingleRelationshipMapping.this.getResolvedTargetEntity();
 		}

 		public String getAttributeName() {
 			return AbstractJavaSingleRelationshipMapping.this.getAttributeName();
 		}

 		public RelationshipMapping getRelationshipMapping() {
 			return AbstractJavaSingleRelationshipMapping.this;
 		}

 		public boolean tableNameIsInvalid(String tableName) {
 			return AbstractJavaSingleRelationshipMapping.this.getTypeMapping().tableNameIsInvalid(tableName);
 		}

 		/**
 		 * the join column can be on a secondary table
 		 */
 		public boolean tableIsAllowed() {
 			return true;
 		}

 		public TypeMapping getTypeMapping() {
 			return AbstractJavaSingleRelationshipMapping.this.getTypeMapping();
 		}

 		public Table getDbTable(String tableName) {
 			return getTypeMapping().getDbTable(tableName);
 		}

 		public Table getReferencedColumnDbTable() {
 			Entity targetEntity = getTargetEntity();
 			return (targetEntity == null) ? null : targetEntity.getPrimaryDbTable();
 		}

 		public boolean isVirtual(BaseJoinColumn joinColumn) {
 			return AbstractJavaSingleRelationshipMapping.this.defaultJoinColumn == joinColumn;
 		}

 		public String getDefaultColumnName() {
 			// TODO Auto-generated method stub
 			return null;
 		}

 		public TextRange getValidationTextRange(CompilationUnit astRoot) {
 			return AbstractJavaSingleRelationshipMapping.this.getValidationTextRange(astRoot);
 		}

 		public int joinColumnsSize() {
 			return AbstractJavaSingleRelationshipMapping.this.joinColumnsSize();
 		}

 	}

 }
	/*******************************************************************************
	* Copyright (c) 2006, 2009 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.core.internal.context.java;

	import java.util.ArrayList;
	import java.util.Iterator;
	import java.util.List;
	import java.util.ListIterator;
	import org.eclipse.jdt.core.dom.CompilationUnit;
	import org.eclipse.jpt.core.context.BaseJoinColumn;
	import org.eclipse.jpt.core.context.Entity;
	import org.eclipse.jpt.core.context.FetchType;
	import org.eclipse.jpt.core.context.JoinColumn;
	import org.eclipse.jpt.core.context.Nullable;
	import org.eclipse.jpt.core.context.RelationshipMapping;
	import org.eclipse.jpt.core.context.TypeMapping;
	import org.eclipse.jpt.core.context.java.JavaJoinColumn;
	import org.eclipse.jpt.core.context.java.JavaPersistentAttribute;
	import org.eclipse.jpt.core.context.java.JavaSingleRelationshipMapping;
	import org.eclipse.jpt.core.internal.resource.java.NullJoinColumn;
	import org.eclipse.jpt.core.internal.validation.DefaultJpaValidationMessages;
	import org.eclipse.jpt.core.internal.validation.JpaValidationMessages;
	import org.eclipse.jpt.core.resource.java.JoinColumnAnnotation;
	import org.eclipse.jpt.core.resource.java.JoinColumnsAnnotation;
	import org.eclipse.jpt.core.resource.java.NestableAnnotation;
	import org.eclipse.jpt.core.resource.java.RelationshipMappingAnnotation;
	import org.eclipse.jpt.core.utility.TextRange;
	import org.eclipse.jpt.db.Table;
	import org.eclipse.jpt.utility.Filter;
	import org.eclipse.jpt.utility.internal.CollectionTools;
	import org.eclipse.jpt.utility.internal.iterators.CloneListIterator;
	import org.eclipse.jpt.utility.internal.iterators.EmptyListIterator;
	import org.eclipse.jpt.utility.internal.iterators.SingleElementListIterator;
	import org.eclipse.wst.validation.internal.provisional.core.IMessage;

	/**
	*
	*/
	public abstract class AbstractJavaSingleRelationshipMapping<T extends RelationshipMappingAnnotation>
	extends AbstractJavaRelationshipMapping<T>
	implements JavaSingleRelationshipMapping
	{

	protected final List<JavaJoinColumn> specifiedJoinColumns;
	protected JavaJoinColumn defaultJoinColumn;

	protected Boolean specifiedOptional;


	protected AbstractJavaSingleRelationshipMapping(JavaPersistentAttribute parent) {
	super(parent);
	this.specifiedJoinColumns = new ArrayList<JavaJoinColumn>();
	}


	// ******** join columns ********

	public ListIterator<JavaJoinColumn> joinColumns() {
	return this.containsSpecifiedJoinColumns() ? this.specifiedJoinColumns() : this.defaultJoinColumns();
	}

	public int joinColumnsSize() {
	return this.containsSpecifiedJoinColumns() ? this.specifiedJoinColumnsSize() : this.defaultJoinColumnsSize();
	}

	public ListIterator<JavaJoinColumn> specifiedJoinColumns() {
	return new CloneListIterator<JavaJoinColumn>(this.specifiedJoinColumns);
	}

	public int specifiedJoinColumnsSize() {
	return this.specifiedJoinColumns.size();
	}

	public boolean containsSpecifiedJoinColumns() {
	return ! this.specifiedJoinColumns.isEmpty();
	}

	public JavaJoinColumn addSpecifiedJoinColumn(int index) {
	JavaJoinColumn oldDefaultJoinColumn = this.defaultJoinColumn;
	if (oldDefaultJoinColumn != null) {
	//null the default join column now if one already exists.
	//if one does not exist, there is already a specified join column.
	//Remove it now so that it doesn't get removed during an update and
	//cause change notifications to be sent to the UI in the wrong order
	this.defaultJoinColumn = null;
	}
	JavaJoinColumn joinColumn = this.getJpaFactory().buildJavaJoinColumn(this, this.createJoinColumnOwner());
	this.specifiedJoinColumns.add(index, joinColumn);
	JoinColumnAnnotation joinColumnAnnotation = (JoinColumnAnnotation) this.getResourcePersistentAttribute().addSupportingAnnotation(index, JoinColumnAnnotation.ANNOTATION_NAME, JoinColumnsAnnotation.ANNOTATION_NAME);
	joinColumn.initialize(joinColumnAnnotation);
	this.fireItemAdded(SPECIFIED_JOIN_COLUMNS_LIST, index, joinColumn);
	if (oldDefaultJoinColumn != null) {
	this.firePropertyChanged(DEFAULT_JOIN_COLUMN, oldDefaultJoinColumn, null);
	}
	return joinColumn;
	}

	protected void addSpecifiedJoinColumn(int index, JavaJoinColumn joinColumn) {
	this.addItemToList(index, joinColumn, this.specifiedJoinColumns, SPECIFIED_JOIN_COLUMNS_LIST);
	}

	protected void addSpecifiedJoinColumn(JavaJoinColumn joinColumn) {
	this.addSpecifiedJoinColumn(this.specifiedJoinColumns.size(), joinColumn);
	}

	public void removeSpecifiedJoinColumn(JoinColumn joinColumn) {
	this.removeSpecifiedJoinColumn(this.specifiedJoinColumns.indexOf(joinColumn));
	}

	public void removeSpecifiedJoinColumn(int index) {
	JavaJoinColumn removedJoinColumn = this.specifiedJoinColumns.remove(index);
	if (this.specifiedJoinColumns.isEmpty()) {
	//create the defaultJoinColumn now or this will happen during project update
	//after removing the join column from the resource model. That causes problems
	//in the UI because the change notifications end up in the wrong order.
	this.defaultJoinColumn = this.buildJoinColumn(new NullJoinColumn(this.getResourcePersistentAttribute()));
	}
	this.getResourcePersistentAttribute().removeSupportingAnnotation(index, JoinColumnAnnotation.ANNOTATION_NAME, JoinColumnsAnnotation.ANNOTATION_NAME);
	this.fireItemRemoved(SPECIFIED_JOIN_COLUMNS_LIST, index, removedJoinColumn);
	if (this.defaultJoinColumn != null) {
	//fire change notification if a defaultJoinColumn was created above
	this.firePropertyChanged(DEFAULT_JOIN_COLUMN, null, this.defaultJoinColumn);
	}
	}

	protected void removeSpecifiedJoinColumn_(JavaJoinColumn joinColumn) {
	this.removeItemFromList(joinColumn, this.specifiedJoinColumns, SPECIFIED_JOIN_COLUMNS_LIST);
	}

	public void moveSpecifiedJoinColumn(int targetIndex, int sourceIndex) {
	CollectionTools.move(this.specifiedJoinColumns, targetIndex, sourceIndex);
	this.getResourcePersistentAttribute().moveSupportingAnnotation(targetIndex, sourceIndex, JoinColumnsAnnotation.ANNOTATION_NAME);
	this.fireItemMoved(SPECIFIED_JOIN_COLUMNS_LIST, targetIndex, sourceIndex);
	}

	public JavaJoinColumn getDefaultJoinColumn() {
	return this.defaultJoinColumn;
	}

	protected void setDefaultJoinColumn(JavaJoinColumn column) {
	JavaJoinColumn old = this.defaultJoinColumn;
	this.defaultJoinColumn = column;
	this.firePropertyChanged(DEFAULT_JOIN_COLUMN, old, column);
	}

	protected ListIterator<JavaJoinColumn> defaultJoinColumns() {
	if (this.defaultJoinColumn != null) {
	return new SingleElementListIterator<JavaJoinColumn>(this.defaultJoinColumn);
	}
	return EmptyListIterator.instance();
	}

	protected int defaultJoinColumnsSize() {
	return (this.defaultJoinColumn == null) ? 0 : 1;
	}


	// ******** optional ********

	public boolean isOptional() {
	return (this.specifiedOptional != null) ? this.specifiedOptional.booleanValue() : this.isDefaultOptional();
	}

	public Boolean getSpecifiedOptional() {
	return this.specifiedOptional;
	}

	public void setSpecifiedOptional(Boolean optional) {
	Boolean old = this.specifiedOptional;
	this.specifiedOptional = optional;
	this.setOptionalOnResourceModel(optional);
	this.firePropertyChanged(Nullable.SPECIFIED_OPTIONAL_PROPERTY, old, optional);
	}

	protected void setSpecifiedOptional_(Boolean optional) {
	Boolean old = this.specifiedOptional;
	this.specifiedOptional = optional;
	this.firePropertyChanged(Nullable.SPECIFIED_OPTIONAL_PROPERTY, old, optional);
	}

	public boolean isDefaultOptional() {
	return Nullable.DEFAULT_OPTIONAL;
	}

	protected abstract void setOptionalOnResourceModel(Boolean newOptional);


	// ******** resource => context ********

	@Override
	protected void initialize() {
	super.initialize();
	this.initializeSpecifiedJoinColumns();
	this.initializeDefaultJoinColumn();
	this.specifiedOptional = this.getResourceOptional();
	}

	protected void initializeSpecifiedJoinColumns() {
	ListIterator<NestableAnnotation> annotations = this.resourcePersistentAttribute.supportingAnnotations(JoinColumnAnnotation.ANNOTATION_NAME, JoinColumnsAnnotation.ANNOTATION_NAME);

	while(annotations.hasNext()) {
	this.specifiedJoinColumns.add(buildJoinColumn((JoinColumnAnnotation) annotations.next()));
	}
	}

	protected void initializeDefaultJoinColumn() {
	if (this.shouldBuildDefaultJoinColumn()) {
	this.defaultJoinColumn = this.buildJoinColumn(new NullJoinColumn(this.resourcePersistentAttribute));
	}
	}

	protected boolean shouldBuildDefaultJoinColumn() {
	return ! this.containsSpecifiedJoinColumns() && this.isRelationshipOwner();
	}

	@Override
	protected void update() {
	super.update();
	this.updateSpecifiedJoinColumns();
	this.updateDefaultJoinColumn();
	this.setSpecifiedOptional_(this.getResourceOptional());
	}

	protected abstract Boolean getResourceOptional();


	protected void updateSpecifiedJoinColumns() {
	ListIterator<JavaJoinColumn> joinColumns = specifiedJoinColumns();
	ListIterator<NestableAnnotation> resourceJoinColumns = this.resourcePersistentAttribute.supportingAnnotations(JoinColumnAnnotation.ANNOTATION_NAME, JoinColumnsAnnotation.ANNOTATION_NAME);

	while (joinColumns.hasNext()) {
	JavaJoinColumn joinColumn = joinColumns.next();
	if (resourceJoinColumns.hasNext()) {
	joinColumn.update((JoinColumnAnnotation) resourceJoinColumns.next());
	}
	else {
	removeSpecifiedJoinColumn_(joinColumn);
	}
	}

	while (resourceJoinColumns.hasNext()) {
	addSpecifiedJoinColumn(buildJoinColumn((JoinColumnAnnotation) resourceJoinColumns.next()));
	}
	}

	protected void updateDefaultJoinColumn() {
	if (this.shouldBuildDefaultJoinColumn()) {
	JoinColumnAnnotation jcAnnotation = new NullJoinColumn(this.resourcePersistentAttribute);
	if (this.defaultJoinColumn == null) {
	this.setDefaultJoinColumn(this.buildJoinColumn(jcAnnotation));
	} else {
	this.defaultJoinColumn.update(jcAnnotation);
	}
	} else {
	this.setDefaultJoinColumn(null);
	}
	}

	protected JavaJoinColumn buildJoinColumn(JoinColumnAnnotation joinColumnResource) {
	JavaJoinColumn joinColumn = getJpaFactory().buildJavaJoinColumn(this, createJoinColumnOwner());
	joinColumn.initialize(joinColumnResource);
	return joinColumn;
	}

	protected JavaJoinColumn.Owner createJoinColumnOwner() {
	return new JoinColumnOwner();
	}

	/**
	* eliminate any "container" types
	*/
	@Override
	protected String buildDefaultTargetEntity() {
	if (this.resourcePersistentAttribute.typeIsContainer()) {
	return null;
	}
	return this.resourcePersistentAttribute.getQualifiedReferenceEntityTypeName();
	}


	// ******** Fetchable implementation ********

	public FetchType getDefaultFetch() {
	return DEFAULT_FETCH_TYPE;
	}


	// ******** Java completion proposals ********

	@Override
	public Iterator<String> javaCompletionProposals(int pos, Filter<String> filter, CompilationUnit astRoot) {
	Iterator<String> result = super.javaCompletionProposals(pos, filter, astRoot);
	if (result != null) {
	return result;
	}
	for (JavaJoinColumn column : CollectionTools.iterable(this.joinColumns())) {
	result = column.javaCompletionProposals(pos, filter, astRoot);
	if (result != null) {
	return result;
	}
	}
	return null;
	}


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

	@Override
	public void validate(List<IMessage> messages, CompilationUnit astRoot) {
	super.validate(messages, astRoot);

	if (this.connectionProfileIsActive()) {
	this.validateJoinColumns(messages, astRoot);
	}
	}

	// 192287 - We don't want join column validation errors on the non-owning side
	// of a bidirectional relationship. This is a low risk fix for RC3, but a better
	// solution would be to not have the default join columns on the non-owning side.
	// This would fix another bug that we show default join columns in this situation.
	protected void validateJoinColumns(List<IMessage> messages, CompilationUnit astRoot) {
	if (this.ownerIsEntity() && this.isRelationshipOwner()) {
	for (Iterator<JavaJoinColumn> stream = this.joinColumns(); stream.hasNext(); ) {
	this.validateJoinColumn(stream.next(), messages, astRoot);
	}
	}
	}

	protected void validateJoinColumn(JavaJoinColumn joinColumn, List<IMessage> messages, CompilationUnit astRoot) {
	if (this.getTypeMapping().tableNameIsInvalid(joinColumn.getTable())) {
	messages.add(
	DefaultJpaValidationMessages.buildMessage(
	IMessage.HIGH_SEVERITY,
	JpaValidationMessages.JOIN_COLUMN_UNRESOLVED_TABLE,
	new String[] {joinColumn.getTable(), joinColumn.getName()},
	joinColumn,
	joinColumn.getTableTextRange(astRoot)
	)
	);
	return;
	}

	if ( ! joinColumn.isResolved()) {
	messages.add(
	DefaultJpaValidationMessages.buildMessage(
	IMessage.HIGH_SEVERITY,
	JpaValidationMessages.JOIN_COLUMN_UNRESOLVED_NAME,
	new String[] {joinColumn.getName()},
	joinColumn,
	joinColumn.getNameTextRange(astRoot)
	)
	);
	}

	if ( ! joinColumn.isReferencedColumnResolved()) {
	messages.add(
	DefaultJpaValidationMessages.buildMessage(
	IMessage.HIGH_SEVERITY,
	JpaValidationMessages.JOIN_COLUMN_REFERENCED_COLUMN_UNRESOLVED_NAME,
	new String[] {joinColumn.getReferencedColumnName(), joinColumn.getName()},
	joinColumn,
	joinColumn.getReferencedColumnNameTextRange(astRoot)
	)
	);
	}
	}


	// ******** join column owner adapter ********

	public class JoinColumnOwner implements JavaJoinColumn.Owner {

	public JoinColumnOwner() {
	super();
	}

	/**
	* by default, the join column is in the type mapping's primary table
	*/
	public String getDefaultTableName() {
	return AbstractJavaSingleRelationshipMapping.this.getTypeMapping().getPrimaryTableName();
	}

	public Entity getTargetEntity() {
	return AbstractJavaSingleRelationshipMapping.this.getResolvedTargetEntity();
	}

	public String getAttributeName() {
	return AbstractJavaSingleRelationshipMapping.this.getAttributeName();
	}

	public RelationshipMapping getRelationshipMapping() {
	return AbstractJavaSingleRelationshipMapping.this;
	}

	public boolean tableNameIsInvalid(String tableName) {
	return AbstractJavaSingleRelationshipMapping.this.getTypeMapping().tableNameIsInvalid(tableName);
	}

	/**
	* the join column can be on a secondary table
	*/
	public boolean tableIsAllowed() {
	return true;
	}

	public TypeMapping getTypeMapping() {
	return AbstractJavaSingleRelationshipMapping.this.getTypeMapping();
	}

	public Table getDbTable(String tableName) {
	return getTypeMapping().getDbTable(tableName);
	}

	public Table getReferencedColumnDbTable() {
	Entity targetEntity = getTargetEntity();
	return (targetEntity == null) ? null : targetEntity.getPrimaryDbTable();
	}

	public boolean isVirtual(BaseJoinColumn joinColumn) {
	return AbstractJavaSingleRelationshipMapping.this.defaultJoinColumn == joinColumn;
	}

	public String getDefaultColumnName() {
	// TODO Auto-generated method stub
	return null;
	}

	public TextRange getValidationTextRange(CompilationUnit astRoot) {
	return AbstractJavaSingleRelationshipMapping.this.getValidationTextRange(astRoot);
	}

	public int joinColumnsSize() {
	return AbstractJavaSingleRelationshipMapping.this.joinColumnsSize();
	}

	}

	}