/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.core.db.ant.dbupgrade;
import java.sql.Connection;
import mazz.i18n.Msg;
import org.apache.tools.ant.BuildException;
import org.rhq.core.db.DatabaseType;
import org.rhq.core.db.ant.DbAntI18NFactory;
import org.rhq.core.db.ant.DbAntI18NResourceKeys;
/**
* This is a DB-Upgrade ANT task that is used to drop sequences from the database. The name of the sequence table must
* be specified (see {@link #setName(String)}).
*
* @author John Mazzitelli
*
*/
public class SST_DropSequence extends SchemaSpecTask {
private static final Msg MSG = DbAntI18NFactory.getMsg();
/**
* The name of the sequence table to be dropped.
*/
private String m_name;
/**
* The name attribute of the ANT task element which defines the sequence table name.
*
* @param name sequence table name
*/
public void setName(String name) {
m_name = name;
}
/**
* Creates the sequence table.
*
* @throws BuildException
*/
public void execute() throws BuildException {
if (!isDBTargeted()) {
return;
}
// make sure the task has been defined properly
validateAttributes();
try {
DatabaseType db_type = getDatabaseType();
Connection conn = getConnection();
log(MSG.getMsg(DbAntI18NResourceKeys.DROP_SEQUENCE_EXECUTING, m_name));
db_type.dropSequence(conn, m_name);
} catch (Exception e) {
throw new BuildException(MSG.getMsg(DbAntI18NResourceKeys.SCHEMA_SPEC_TASK_FAILURE, "DropSequence", e), e);
}
return;
}
/**
* This will confirm that the ANT task has all required attributes defined and are valid.
*
* @throws BuildException if the validation checks failed
*/
private void validateAttributes() throws BuildException {
if (m_name == null) {
throw new BuildException(MSG.getMsg(DbAntI18NResourceKeys.SCHEMA_SPEC_TASK_MISSING_ATTRIB, "DropSequence",
"name"));
}
// all checks out OK
return;
}
}