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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
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.cmp.jdbc;
import org.jboss.as.cmp.jdbc.bridge.JDBCCMPFieldBridge;
import org.jboss.as.cmp.jdbc.bridge.JDBCEntityBridge;
import org.jboss.as.cmp.jdbc.metadata.JDBCQueryMetaData;
import org.jboss.as.cmp.jdbc.metadata.JDBCReadAheadMetaData;
/**
* JDBCFindByQuery automatic finder used in CMP 1.x.
*
* @author <a href="mailto:dain@daingroup.com">Dain Sundstrom</a>
* @author <a href="mailto:rickard.oberg@telkel.com">Rickard Oberg</a>
* @author <a href="mailto:marc.fleury@telkel.com">Marc Fleury</a>
* @author <a href="mailto:shevlandj@kpi.com.au">Joe Shevland</a>
* @author <a href="mailto:justin@j-m-f.demon.co.uk">Justin Forder</a>
* @author <a href="mailto:danch@nvisia.com">danch (Dan Christopherson)</a>
* @author <a href="mailto:alex@jboss.org">Alex Loubyansky</a>
* @version $Revision: 81030 $
*/
public final class JDBCFindByQuery extends JDBCAbstractQueryCommand {
// The meta-info for the field we are finding by
private final JDBCCMPFieldBridge cmpField;
public JDBCFindByQuery(JDBCStoreManager manager, JDBCQueryMetaData q) {
super(manager, q);
JDBCEntityBridge entity = (JDBCEntityBridge) manager.getEntityBridge();
String finderName = q.getMethod().getName();
// finder name will be like findByFieldName
// we need to convert it to fieldName.
String cmpFieldName = Character.toLowerCase(finderName.charAt(6)) + finderName.substring(7);
// get the field
cmpField = entity.getCMPFieldByName(cmpFieldName);
if (cmpField == null) {
throw new IllegalArgumentException(
"No finder for this method: " + finderName);
}
// set the preload fields
JDBCReadAheadMetaData readAhead = q.getReadAhead();
if (readAhead.isOnFind()) {
setEagerLoadGroup(readAhead.getEagerLoadGroup());
}
// generate the sql
StringBuffer sql = new StringBuffer(300);
sql.append(SQLUtil.SELECT);
SQLUtil.getColumnNamesClause(entity.getPrimaryKeyFields(), sql);
if (getEagerLoadGroup() != null) {
SQLUtil.appendColumnNamesClause(entity, getEagerLoadGroup(), sql);
}
sql.append(SQLUtil.FROM)
.append(entity.getQualifiedTableName())
.append(SQLUtil.WHERE);
SQLUtil.getWhereClause(cmpField, sql);
setSQL(sql.toString());
setParameterList(QueryParameter.createParameters(0, cmpField));
}
}