/*
* Copyright (c) 2011. The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.hbql.statement;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.hbql.client.ExecutionResults;
import org.apache.hadoop.hbase.hbql.client.HBqlException;
import org.apache.hadoop.hbase.hbql.impl.HConnectionImpl;
import java.util.List;
public class AlterTableStatement extends GenericStatement implements ConnectionStatement {
private final String tableName;
private final List<AlterTableAction> alterTableActionList;
public AlterTableStatement(final StatementPredicate predicate,
final String tableName,
final List<AlterTableAction> alterTableActionList) {
super(predicate);
this.tableName = tableName;
this.alterTableActionList = alterTableActionList;
}
private String getTableName() {
return this.tableName;
}
protected ExecutionResults execute(final HConnectionImpl conn) throws HBqlException {
conn.validateTableDisabled(this.getTableName(), "alter");
final HBaseAdmin admin = conn.getHBaseAdmin();
for (final AlterTableAction alterTableAction : this.alterTableActionList)
alterTableAction.execute(conn, admin, this.getTableName());
return new ExecutionResults("Table " + this.getTableName() + " altered.");
}
public static String usage() {
return "ALTER TABLE table_name alter_action_list [IF bool_expr]";
}
}