/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.cfg;
import java.util.HashMap;
import java.util.Map;
import javax.persistence.AssociationOverride;
import javax.persistence.AssociationOverrides;
import javax.persistence.AttributeOverride;
import javax.persistence.AttributeOverrides;
import javax.persistence.Column;
import javax.persistence.Embeddable;
import javax.persistence.Entity;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.MappedSuperclass;
import org.hibernate.AssertionFailure;
import org.hibernate.annotations.common.reflection.XAnnotatedElement;
import org.hibernate.annotations.common.reflection.XClass;
import org.hibernate.annotations.common.reflection.XProperty;
import org.hibernate.internal.util.StringHelper;
/**
* @author Emmanuel Bernard
*/
public abstract class AbstractPropertyHolder implements PropertyHolder {
protected AbstractPropertyHolder parent;
private Map<String, Column[]> holderColumnOverride;
private Map<String, Column[]> currentPropertyColumnOverride;
private Map<String, JoinColumn[]> holderJoinColumnOverride;
private Map<String, JoinColumn[]> currentPropertyJoinColumnOverride;
private Map<String, JoinTable> holderJoinTableOverride;
private Map<String, JoinTable> currentPropertyJoinTableOverride;
private String path;
private Mappings mappings;
private Boolean isInIdClass;
public AbstractPropertyHolder(
String path,
PropertyHolder parent,
XClass clazzToProcess,
Mappings mappings) {
this.path = path;
this.parent = (AbstractPropertyHolder) parent;
this.mappings = mappings;
buildHierarchyColumnOverride( clazzToProcess );
}
public boolean isInIdClass() {
return isInIdClass != null ? isInIdClass : parent != null ? parent.isInIdClass() : false;
}
public void setInIdClass(Boolean isInIdClass) {
this.isInIdClass = isInIdClass;
}
public String getPath() {
return path;
}
protected Mappings getMappings() {
return mappings;
}
/**
* property can be null
*/
protected void setCurrentProperty(XProperty property) {
if ( property == null ) {
this.currentPropertyColumnOverride = null;
this.currentPropertyJoinColumnOverride = null;
this.currentPropertyJoinTableOverride = null;
}
else {
this.currentPropertyColumnOverride = buildColumnOverride(
property,
getPath()
);
if ( this.currentPropertyColumnOverride.size() == 0 ) {
this.currentPropertyColumnOverride = null;
}
this.currentPropertyJoinColumnOverride = buildJoinColumnOverride(
property,
getPath()
);
if ( this.currentPropertyJoinColumnOverride.size() == 0 ) {
this.currentPropertyJoinColumnOverride = null;
}
this.currentPropertyJoinTableOverride = buildJoinTableOverride(
property,
getPath()
);
if ( this.currentPropertyJoinTableOverride.size() == 0 ) {
this.currentPropertyJoinTableOverride = null;
}
}
}
/**
* Get column overriding, property first, then parent, then holder
* replace the placeholder 'collection&&element' with nothing
*
* These rules are here to support both JPA 2 and legacy overriding rules.
*
*/
public Column[] getOverriddenColumn(String propertyName) {
Column[] result = getExactOverriddenColumn( propertyName );
if (result == null) {
//the commented code can be useful if people use the new prefixes on old mappings and vice versa
// if we enable them:
// WARNING: this can conflict with user's expectations if:
// - the property uses some restricted values
// - the user has overridden the column
// also change getOverriddenJoinColumn and getOverriddenJoinTable as well
// if ( propertyName.contains( ".key." ) ) {
// //support for legacy @AttributeOverride declarations
// //TODO cache the underlying regexp
// result = getExactOverriddenColumn( propertyName.replace( ".key.", ".index." ) );
// }
// if ( result == null && propertyName.endsWith( ".key" ) ) {
// //support for legacy @AttributeOverride declarations
// //TODO cache the underlying regexp
// result = getExactOverriddenColumn(
// propertyName.substring( 0, propertyName.length() - ".key".length() ) + ".index"
// );
// }
// if ( result == null && propertyName.contains( ".value." ) ) {
// //support for legacy @AttributeOverride declarations
// //TODO cache the underlying regexp
// result = getExactOverriddenColumn( propertyName.replace( ".value.", ".element." ) );
// }
// if ( result == null && propertyName.endsWith( ".value" ) ) {
// //support for legacy @AttributeOverride declarations
// //TODO cache the underlying regexp
// result = getExactOverriddenColumn(
// propertyName.substring( 0, propertyName.length() - ".value".length() ) + ".element"
// );
// }
if ( result == null && propertyName.contains( ".collection&&element." ) ) {
//support for non map collections where no prefix is needed
//TODO cache the underlying regexp
result = getExactOverriddenColumn( propertyName.replace( ".collection&&element.", "." ) );
}
}
return result;
}
/**
* Get column overriding, property first, then parent, then holder
* find the overridden rules from the exact property name.
*/
private Column[] getExactOverriddenColumn(String propertyName) {
Column[] override = null;
if ( parent != null ) {
override = parent.getExactOverriddenColumn( propertyName );
}
if ( override == null && currentPropertyColumnOverride != null ) {
override = currentPropertyColumnOverride.get( propertyName );
}
if ( override == null && holderColumnOverride != null ) {
override = holderColumnOverride.get( propertyName );
}
return override;
}
/**
* Get column overriding, property first, then parent, then holder
* replace the placeholder 'collection&&element' with nothing
*
* These rules are here to support both JPA 2 and legacy overriding rules.
*
*/
public JoinColumn[] getOverriddenJoinColumn(String propertyName) {
JoinColumn[] result = getExactOverriddenJoinColumn( propertyName );
if ( result == null && propertyName.contains( ".collection&&element." ) ) {
//support for non map collections where no prefix is needed
//TODO cache the underlying regexp
result = getExactOverriddenJoinColumn( propertyName.replace( ".collection&&element.", "." ) );
}
return result;
}
/**
* Get column overriding, property first, then parent, then holder
*/
private JoinColumn[] getExactOverriddenJoinColumn(String propertyName) {
JoinColumn[] override = null;
if ( parent != null ) {
override = parent.getExactOverriddenJoinColumn( propertyName );
}
if ( override == null && currentPropertyJoinColumnOverride != null ) {
override = currentPropertyJoinColumnOverride.get( propertyName );
}
if ( override == null && holderJoinColumnOverride != null ) {
override = holderJoinColumnOverride.get( propertyName );
}
return override;
}
/**
* Get column overriding, property first, then parent, then holder
* replace the placeholder 'collection&&element' with nothing
*
* These rules are here to support both JPA 2 and legacy overriding rules.
*
*/
public JoinTable getJoinTable(XProperty property) {
final String propertyName = StringHelper.qualify( getPath(), property.getName() );
JoinTable result = getOverriddenJoinTable( propertyName );
if (result == null) {
result = property.getAnnotation( JoinTable.class );
}
return result;
}
/**
* Get column overriding, property first, then parent, then holder
* replace the placeholder 'collection&&element' with nothing
*
* These rules are here to support both JPA 2 and legacy overriding rules.
*
*/
public JoinTable getOverriddenJoinTable(String propertyName) {
JoinTable result = getExactOverriddenJoinTable( propertyName );
if ( result == null && propertyName.contains( ".collection&&element." ) ) {
//support for non map collections where no prefix is needed
//TODO cache the underlying regexp
result = getExactOverriddenJoinTable( propertyName.replace( ".collection&&element.", "." ) );
}
return result;
}
/**
* Get column overriding, property first, then parent, then holder
*/
private JoinTable getExactOverriddenJoinTable(String propertyName) {
JoinTable override = null;
if ( parent != null ) {
override = parent.getExactOverriddenJoinTable( propertyName );
}
if ( override == null && currentPropertyJoinTableOverride != null ) {
override = currentPropertyJoinTableOverride.get( propertyName );
}
if ( override == null && holderJoinTableOverride != null ) {
override = holderJoinTableOverride.get( propertyName );
}
return override;
}
private void buildHierarchyColumnOverride(XClass element) {
XClass current = element;
Map<String, Column[]> columnOverride = new HashMap<String, Column[]>();
Map<String, JoinColumn[]> joinColumnOverride = new HashMap<String, JoinColumn[]>();
Map<String, JoinTable> joinTableOverride = new HashMap<String, JoinTable>();
while ( current != null && !mappings.getReflectionManager().toXClass( Object.class ).equals( current ) ) {
if ( current.isAnnotationPresent( Entity.class ) || current.isAnnotationPresent( MappedSuperclass.class )
|| current.isAnnotationPresent( Embeddable.class ) ) {
//FIXME is embeddable override?
Map<String, Column[]> currentOverride = buildColumnOverride( current, getPath() );
Map<String, JoinColumn[]> currentJoinOverride = buildJoinColumnOverride( current, getPath() );
Map<String, JoinTable> currentJoinTableOverride = buildJoinTableOverride( current, getPath() );
currentOverride.putAll( columnOverride ); //subclasses have precedence over superclasses
currentJoinOverride.putAll( joinColumnOverride ); //subclasses have precedence over superclasses
currentJoinOverride.putAll( joinColumnOverride ); //subclasses have precedence over superclasses
columnOverride = currentOverride;
joinColumnOverride = currentJoinOverride;
joinTableOverride = currentJoinTableOverride;
}
current = current.getSuperclass();
}
holderColumnOverride = columnOverride.size() > 0 ? columnOverride : null;
holderJoinColumnOverride = joinColumnOverride.size() > 0 ? joinColumnOverride : null;
holderJoinTableOverride = joinTableOverride.size() > 0 ? joinTableOverride : null;
}
private static Map<String, Column[]> buildColumnOverride(XAnnotatedElement element, String path) {
Map<String, Column[]> columnOverride = new HashMap<String, Column[]>();
if ( element == null ) return columnOverride;
AttributeOverride singleOverride = element.getAnnotation( AttributeOverride.class );
AttributeOverrides multipleOverrides = element.getAnnotation( AttributeOverrides.class );
AttributeOverride[] overrides;
if ( singleOverride != null ) {
overrides = new AttributeOverride[] { singleOverride };
}
else if ( multipleOverrides != null ) {
overrides = multipleOverrides.value();
}
else {
overrides = null;
}
//fill overridden columns
if ( overrides != null ) {
for (AttributeOverride depAttr : overrides) {
columnOverride.put(
StringHelper.qualify( path, depAttr.name() ),
new Column[] { depAttr.column() }
);
}
}
return columnOverride;
}
private static Map<String, JoinColumn[]> buildJoinColumnOverride(XAnnotatedElement element, String path) {
Map<String, JoinColumn[]> columnOverride = new HashMap<String, JoinColumn[]>();
if ( element == null ) return columnOverride;
AssociationOverride singleOverride = element.getAnnotation( AssociationOverride.class );
AssociationOverrides multipleOverrides = element.getAnnotation( AssociationOverrides.class );
AssociationOverride[] overrides;
if ( singleOverride != null ) {
overrides = new AssociationOverride[] { singleOverride };
}
else if ( multipleOverrides != null ) {
overrides = multipleOverrides.value();
}
else {
overrides = null;
}
//fill overridden columns
if ( overrides != null ) {
for (AssociationOverride depAttr : overrides) {
columnOverride.put(
StringHelper.qualify( path, depAttr.name() ),
depAttr.joinColumns()
);
}
}
return columnOverride;
}
private static Map<String, JoinTable> buildJoinTableOverride(XAnnotatedElement element, String path) {
Map<String, JoinTable> tableOverride = new HashMap<String, JoinTable>();
if ( element == null ) return tableOverride;
AssociationOverride singleOverride = element.getAnnotation( AssociationOverride.class );
AssociationOverrides multipleOverrides = element.getAnnotation( AssociationOverrides.class );
AssociationOverride[] overrides;
if ( singleOverride != null ) {
overrides = new AssociationOverride[] { singleOverride };
}
else if ( multipleOverrides != null ) {
overrides = multipleOverrides.value();
}
else {
overrides = null;
}
//fill overridden tables
if ( overrides != null ) {
for (AssociationOverride depAttr : overrides) {
if ( depAttr.joinColumns().length == 0 ) {
tableOverride.put(
StringHelper.qualify( path, depAttr.name() ),
depAttr.joinTable()
);
}
}
}
return tableOverride;
}
public void setParentProperty(String parentProperty) {
throw new AssertionFailure( "Setting the parent property to a non component" );
}
}