org.hibernate.cfg.CopyIdentifierComponentSecondPass Maven / Gradle / Ivy
/*
* 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
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*/
package org.hibernate.cfg;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.hibernate.AnnotationException;
import org.hibernate.AssertionFailure;
import org.hibernate.MappingException;
import org.hibernate.mapping.Column;
import org.hibernate.mapping.Component;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.mapping.Property;
import org.hibernate.mapping.SimpleValue;
/**
* @author Emmanuel Bernard
*/
public class CopyIdentifierComponentSecondPass implements SecondPass {
private final String referencedEntityName;
private final Component component;
private final Mappings mappings;
private final Ejb3JoinColumn[] joinColumns;
public CopyIdentifierComponentSecondPass(
Component comp,
String referencedEntityName,
Ejb3JoinColumn[] joinColumns,
Mappings mappings) {
this.component = comp;
this.referencedEntityName = referencedEntityName;
this.mappings = mappings;
this.joinColumns = joinColumns;
}
@SuppressWarnings({ "unchecked" })
public void doSecondPass(Map persistentClasses) throws MappingException {
PersistentClass referencedPersistentClass = (PersistentClass) persistentClasses.get( referencedEntityName );
// TODO better error names
if ( referencedPersistentClass == null ) {
throw new AnnotationException( "Unknown entity name: " + referencedEntityName );
}
if ( ! ( referencedPersistentClass.getIdentifier() instanceof Component ) ) {
throw new AssertionFailure(
"Unexpected identifier type on the referenced entity when mapping a @MapsId: "
+ referencedEntityName
);
}
Component referencedComponent = (Component) referencedPersistentClass.getIdentifier();
Iterator properties = referencedComponent.getPropertyIterator();
//prepare column name structure
boolean isExplicitReference = true;
Map columnByReferencedName = new HashMap(joinColumns.length);
for (Ejb3JoinColumn joinColumn : joinColumns) {
final String referencedColumnName = joinColumn.getReferencedColumn();
if ( referencedColumnName == null || BinderHelper.isEmptyAnnotationValue( referencedColumnName ) ) {
break;
}
//JPA 2 requires referencedColumnNames to be case insensitive
columnByReferencedName.put( referencedColumnName.toLowerCase(), joinColumn );
}
//try default column orientation
int index = 0;
if ( columnByReferencedName.isEmpty() ) {
isExplicitReference = false;
for (Ejb3JoinColumn joinColumn : joinColumns) {
columnByReferencedName.put( "" + index, joinColumn );
index++;
}
index = 0;
}
while ( properties.hasNext() ) {
Property referencedProperty = properties.next();
if ( referencedProperty.isComposite() ) {
throw new AssertionFailure( "Unexpected nested component on the referenced entity when mapping a @MapsId: "
+ referencedEntityName);
}
else {
Property property = new Property();
property.setName( referencedProperty.getName() );
property.setNodeName( referencedProperty.getNodeName() );
//FIXME set optional?
//property.setOptional( property.isOptional() );
property.setPersistentClass( component.getOwner() );
property.setPropertyAccessorName( referencedProperty.getPropertyAccessorName() );
SimpleValue value = new SimpleValue( mappings, component.getTable() );
property.setValue( value );
final SimpleValue referencedValue = (SimpleValue) referencedProperty.getValue();
value.setTypeName( referencedValue.getTypeName() );
value.setTypeParameters( referencedValue.getTypeParameters() );
final Iterator columns = referencedValue.getColumnIterator();
if ( joinColumns[0].isNameDeferred() ) {
joinColumns[0].copyReferencedStructureAndCreateDefaultJoinColumns(
referencedPersistentClass,
columns,
value);
}
else {
//FIXME take care of Formula
while ( columns.hasNext() ) {
Column column = columns.next();
final Ejb3JoinColumn joinColumn;
String logicalColumnName = null;
if ( isExplicitReference ) {
final String columnName = column.getName();
logicalColumnName = mappings.getLogicalColumnName( columnName, referencedPersistentClass.getTable() );
//JPA 2 requires referencedColumnNames to be case insensitive
joinColumn = columnByReferencedName.get( logicalColumnName.toLowerCase() );
}
else {
joinColumn = columnByReferencedName.get( "" + index );
index++;
}
if ( joinColumn == null && ! joinColumns[0].isNameDeferred() ) {
throw new AnnotationException(
isExplicitReference ?
"Unable to find column reference in the @MapsId mapping: " + logicalColumnName :
"Implicit column reference in the @MapsId mapping fails, try to use explicit referenceColumnNames: " + referencedEntityName
);
}
final String columnName = joinColumn == null || joinColumn.isNameDeferred() ? "tata_" + column.getName() : joinColumn
.getName();
value.addColumn( new Column( columnName ) );
column.setValue( value );
}
}
component.addProperty( property );
}
}
}
}