/*******************************************************************************
* Copyright (c) 1998, 2008 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* James Sutherland - initial impl
******************************************************************************/
package org.eclipse.persistence.internal.jpa.metadata;
import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.persistence.annotations.IdValidation;
import org.eclipse.persistence.annotations.PrimaryKey;
import org.eclipse.persistence.exceptions.ValidationException;
import org.eclipse.persistence.internal.jpa.metadata.MetadataDescriptor;
import org.eclipse.persistence.internal.jpa.metadata.ORMetadata;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAccessibleObject;
import org.eclipse.persistence.internal.jpa.metadata.columns.ColumnMetadata;
/**
* Object to hold onto primary key metadata.
*
* @see PrimaryKey
* @author James Sutherland
* @since EclipseLink 1.1
*/
public class PrimaryKeyMetadata extends ORMetadata {
private Enum m_validation;
private List<ColumnMetadata> m_columns = new ArrayList<ColumnMetadata>();
public PrimaryKeyMetadata() {
super("<primary-key>");
}
public PrimaryKeyMetadata(Annotation primaryKey, MetadataAccessibleObject accessibleObject) {
super(primaryKey, accessibleObject);
m_validation = (Enum) MetadataHelper.invokeMethod("validation", primaryKey);
for (Annotation selectedColumn : (Annotation[]) MetadataHelper.invokeMethod("columns", primaryKey)) {
m_columns.add(new ColumnMetadata(selectedColumn, accessibleObject));
}
}
public boolean hasColumns() {
return ! m_columns.isEmpty();
}
/**
* Process the meta-data, configure primary key and idValidation in descriptor.
*/
public void process(MetadataDescriptor descriptor) {
descriptor.getClassDescriptor().setIdValidation(IdValidation.valueOf(m_validation.name()));
if (hasColumns()) {
List fields = new ArrayList(m_columns.size());
for (ColumnMetadata column : m_columns) {
if (column.getName().equals("")) {
throw ValidationException.optimisticLockingSelectedColumnNamesNotSpecified(descriptor.getJavaClass());
} else {
fields.add(column.getDatabaseField());
}
}
descriptor.getClassDescriptor().setPrimaryKeyFields(fields);
}
}
}