/*
* 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.cassandra.cql;
import java.io.IOException;
import org.apache.cassandra.config.*;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.exceptions.InvalidRequestException;
import org.apache.cassandra.thrift.CfDef;
import org.apache.cassandra.thrift.ColumnDef;
public class DropIndexStatement
{
public final String index;
public DropIndexStatement(String indexName)
{
index = indexName;
}
public CFMetaData generateCFMetadataUpdate(String keyspace)
throws InvalidRequestException, ConfigurationException, IOException
{
CfDef cfDef = null;
KSMetaData ksm = Schema.instance.getTableDefinition(keyspace);
for (CFMetaData cfm : ksm.cfMetaData().values())
{
cfDef = getUpdatedCFDef(cfm.toThrift());
if (cfDef != null)
break;
}
if (cfDef == null)
throw new InvalidRequestException("Index '" + index + "' could not be found in any of the ColumnFamilies of keyspace '" + keyspace + "'");
return CFMetaData.fromThrift(cfDef);
}
private CfDef getUpdatedCFDef(CfDef cfDef) throws InvalidRequestException
{
for (ColumnDef column : cfDef.column_metadata)
{
if (column.isSetIndex_type() && column.isSetIndex_name() && column.index_name.equals(index))
{
column.unsetIndex_name();
column.unsetIndex_type();
return cfDef;
}
}
return null;
}
}