/*
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* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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*/
package org.jboss.as.cmp.jdbc;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import org.jboss.as.cmp.jdbc.bridge.JDBCCMRFieldBridge;
import org.jboss.as.cmp.jdbc.bridge.JDBCEntityBridge;
import org.jboss.as.cmp.jdbc.bridge.JDBCFieldBridge;
import org.jboss.as.cmp.context.CmpEntityBeanContext;
/**
* This command establishes relationships for CMR fields that have
* foreign keys mapped to primary keys.
*
* @author <a href="mailto:aloubyansky@hotmail.com">Alex Loubyansky</a>
* @version $Revision: 81030 $
*/
public final class JDBCPostCreateEntityCommand {
// Attributes ------------------------------------
private final JDBCEntityBridge entity;
private final JDBCCMRFieldBridge[] cmrWithFKMappedToCMP;
// Constructors ----------------------------------
public JDBCPostCreateEntityCommand(JDBCStoreManager manager) {
entity = (JDBCEntityBridge) manager.getEntityBridge();
JDBCFieldBridge[] cmrFields = entity.getCMRFields();
List fkToCMPList = new ArrayList(4);
for (int i = 0; i < cmrFields.length; ++i) {
JDBCCMRFieldBridge cmrField = (JDBCCMRFieldBridge) cmrFields[i];
JDBCCMRFieldBridge relatedCMRField = (JDBCCMRFieldBridge) cmrField.getRelatedCMRField();
if (cmrField.hasFKFieldsMappedToCMPFields()
|| relatedCMRField.hasFKFieldsMappedToCMPFields()) {
fkToCMPList.add(cmrField);
}
}
if (fkToCMPList.isEmpty())
cmrWithFKMappedToCMP = null;
else
cmrWithFKMappedToCMP = (JDBCCMRFieldBridge[]) fkToCMPList
.toArray(new JDBCCMRFieldBridge[fkToCMPList.size()]);
}
// Public ----------------------------------------
public Object execute(Method m, Object[] args, CmpEntityBeanContext ctx) {
if (cmrWithFKMappedToCMP == null)
return null;
for (int i = 0; i < cmrWithFKMappedToCMP.length; ++i) {
JDBCCMRFieldBridge cmrField = cmrWithFKMappedToCMP[i];
JDBCCMRFieldBridge relatedCMRField = (JDBCCMRFieldBridge) cmrField.getRelatedCMRField();
if (cmrField.hasFKFieldsMappedToCMPFields()) {
Object relatedId = cmrField.getRelatedIdFromContext(ctx);
if (relatedId != null) {
try {
if (cmrField.isForeignKeyValid(relatedId)) {
cmrField.createRelationLinks(ctx, relatedId);
} else {
relatedCMRField.addRelatedPKWaitingForMyPK(relatedId, ctx.getPrimaryKey());
}
} catch (Exception e) {
// no such object
}
}
} else if (relatedCMRField.hasFKFieldsMappedToCMPFields()) {
cmrField.addRelatedPKsWaitedForMe(ctx);
}
}
return null;
}
}