/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, 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
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.cmp.jdbc2;
import java.lang.reflect.Method;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.ejb.CreateException;
import org.jboss.as.cmp.CmpMessages;
import org.jboss.as.cmp.context.CmpEntityBeanContext;
import org.jboss.as.cmp.jdbc.JDBCUtil;
import org.jboss.as.cmp.jdbc.bridge.JDBCFieldBridge;
import org.jboss.as.cmp.jdbc.metadata.JDBCEntityCommandMetaData;
import org.jboss.as.cmp.jdbc2.bridge.JDBCCMPFieldBridge2;
import org.jboss.as.cmp.jdbc2.bridge.JDBCEntityBridge2;
import org.jboss.logging.Logger;
/**
* @author <a href="mailto:alex@jboss.org">Alexey Loubyansky</a>
* @version <tt>$Revision: 81030 $</tt>
*/
public class PkSqlCreateCommand implements CreateCommand {
private Logger log;
private JDBCEntityBridge2 entityBridge;
private String pkSql;
private JDBCCMPFieldBridge2 pkField;
public void init(JDBCStoreManager2 manager) {
this.entityBridge = (JDBCEntityBridge2) manager.getEntityBridge();
log = Logger.getLogger(getClass().getName() + "." + entityBridge.getEntityName());
final JDBCFieldBridge[] pkFields = entityBridge.getPrimaryKeyFields();
if (pkFields.length > 1) {
throw CmpMessages.MESSAGES.entityCommandCanNotBeUsedWithCompositePk();
}
this.pkField = (JDBCCMPFieldBridge2) pkFields[0];
JDBCEntityCommandMetaData metadata = entityBridge.getMetaData().getEntityCommand();
pkSql = metadata.getAttribute("pk-sql");
if (pkSql == null) {
throw CmpMessages.MESSAGES.pkSqlAttributeNotSet(entityBridge.getEntityName());
}
if (log.isDebugEnabled()) {
log.debug("entity-command generate pk sql: " + pkSql);
}
}
public Object execute(Method m, Object[] args, CmpEntityBeanContext ctx) throws CreateException {
Object pk;
PersistentContext pctx = (PersistentContext) ctx.getPersistenceContext();
if (ctx.getPrimaryKey() == null) {
Connection con = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
if (log.isDebugEnabled()) {
log.debug("executing sql: " + pkSql);
}
con = entityBridge.getDataSource().getConnection();
ps = con.prepareStatement(pkSql);
rs = ps.executeQuery();
if (!rs.next()) {
throw CmpMessages.MESSAGES.pkSqlReturnedNoResults(pkSql);
}
pk = pkField.loadArgumentResults(rs, 1);
pctx.setFieldValue(pkField.getRowIndex(), pk);
pk = entityBridge.extractPrimaryKeyFromInstance(ctx);
} catch (SQLException e) {
throw CmpMessages.MESSAGES.failedToExecutePkSql(e);
} finally {
JDBCUtil.safeClose(rs);
JDBCUtil.safeClose(ps);
JDBCUtil.safeClose(con);
}
if (pk == null) {
throw CmpMessages.MESSAGES.pkIsNullForCreatedInstance();
}
pctx.setPk(pk);
} else {
// insert-after-ejb-post-create
try {
pctx.flush();
} catch (SQLException e) {
if ("23000".equals(e.getSQLState())) {
throw CmpMessages.MESSAGES.uniqueKeyViolationInvalidFk(ctx.getPrimaryKey());
} else {
throw CmpMessages.MESSAGES.failedToCreateInstance(ctx.getPrimaryKey(), e);
}
}
pk = ctx.getPrimaryKey();
}
return pk;
}
}