/*
* 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;
/**
* Ant task to add a column to a database table. This task requires three attributes:
*
* <ul>
* <li>table</li>
* <li>column</li>
* <li>columnType</li>
* </ul>
*
* This task accepts one optional attribute:
*
* <ul>
* <li>precision - for use if the new columnType can take a precision specifier</li>
* </ul>
*/
public class SST_AddColumn extends SchemaSpecTask {
private static final Msg MSG = DbAntI18NFactory.getMsg();
private String table;
private String column;
private String columnType;
private String precision;
/**
* Sets the name of the table that will get the new column added to it.
*
* @param t table name
*/
public void setTable(String t) {
table = t;
}
/**
* Sets the new column name.
*
* @param c name of the new column
*/
public void setColumn(String c) {
column = c;
}
/**
* Sets the generic DB column type of the new column.
*
* @param ct new column's generic column type
*/
public void setColumnType(String ct) {
columnType = ct;
}
/**
* If the new column holds numeric data or data that can be limited to a particular precision, this defines its
* precision.
*
* @param p new column's precision
*/
public void setPrecision(String p) {
precision = p;
}
/**
* @see org.apache.tools.ant.Task#execute()
*/
public void execute() throws BuildException {
validateAttributes();
if (!isDBTargeted()) {
return;
}
try {
DatabaseType db_type = getDatabaseType();
Connection conn = getConnection();
log(MSG.getMsg(DbAntI18NResourceKeys.ADD_COLUMN_EXECUTING, table, column, columnType, precision));
db_type.addColumn(conn, table, column, columnType, precision);
} catch (Exception e) {
throw new BuildException(MSG.getMsg(DbAntI18NResourceKeys.ADD_COLUMN_ERROR, e), e);
}
}
private void validateAttributes() throws BuildException {
if (table == null) {
throw new BuildException(MSG.getMsg(DbAntI18NResourceKeys.SCHEMA_SPEC_TASK_MISSING_ATTRIB, "AddColumn",
"table"));
}
if (column == null) {
throw new BuildException(MSG.getMsg(DbAntI18NResourceKeys.SCHEMA_SPEC_TASK_MISSING_ATTRIB, "AddColumn",
"column"));
}
if (columnType == null) {
throw new BuildException(MSG.getMsg(DbAntI18NResourceKeys.SCHEMA_SPEC_TASK_MISSING_ATTRIB, "AddColumn",
"columnType"));
}
}
}