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A fork of the Apache Cassandra Project ready to embed Elasticsearch.
/*
* 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.service;
import java.util.List;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.db.marshal.AbstractType;
import org.apache.cassandra.schema.KeyspaceMetadata;
public abstract class MigrationListener
{
/**
* Start a schema merge transaction.
* This helps to manage a batch of schema mutations together.
*/
public void onBeginTransaction()
{
}
/**
* End a schema merge transaction.
*/
public void onEndTransaction()
{
}
public void onCreateKeyspace(KeyspaceMetadata ksm)
{
onCreateKeyspace(ksm.name);
}
public void onCreateKeyspace(String ksName)
{
}
public void onCreateColumnFamily(KeyspaceMetadata ksm, CFMetaData cfm)
{
onCreateColumnFamily(ksm.name, cfm.cfName);
}
public void onCreateColumnFamily(String ksName, String cfName)
{
}
public void onCreateView(String ksName, String viewName)
{
onCreateColumnFamily(ksName, viewName);
}
public void onCreateUserType(String ksName, String typeName)
{
}
public void onCreateFunction(String ksName, String functionName, List> argTypes)
{
}
public void onCreateAggregate(String ksName, String aggregateName, List> argTypes)
{
}
public void onUpdateKeyspace(KeyspaceMetadata ksm)
{
onUpdateKeyspace(ksm.name);
}
public void onUpdateKeyspace(String ksName)
{
}
// the boolean flag indicates whether the change that triggered this event may have a substantive
// impact on statements using the column family.
public void onUpdateColumnFamily(KeyspaceMetadata ksm, CFMetaData cfm, boolean affectsStatements)
{
onUpdateColumnFamily(ksm.name, cfm.cfName, affectsStatements);
}
public void onUpdateColumnFamily(String ksName, String cfName, boolean affectsStatements)
{
}
public void onUpdateView(String ksName, String viewName, boolean columnsDidChange)
{
onUpdateColumnFamily(ksName, viewName, columnsDidChange);
}
public void onUpdateUserType(String ksName, String typeName)
{
}
public void onUpdateFunction(String ksName, String functionName, List> argTypes)
{
}
public void onUpdateAggregate(String ksName, String aggregateName, List> argTypes)
{
}
public void onDropKeyspace(KeyspaceMetadata ksm)
{
onDropKeyspace(ksm.name);
}
public void onDropKeyspace(String ksName)
{
}
public void onDropColumnFamily(KeyspaceMetadata ksm, CFMetaData cfm)
{
onDropColumnFamily(ksm.name, cfm.cfName);
}
public void onDropColumnFamily(String ksName, String cfName)
{
}
public void onDropView(String ksName, String viewName)
{
onDropColumnFamily(ksName, viewName);
}
public void onDropUserType(String ksName, String typeName)
{
}
public void onDropFunction(String ksName, String functionName, List> argTypes)
{
}
public void onDropAggregate(String ksName, String aggregateName, List> argTypes)
{
}
}