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* 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,
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* See the License for the specific language governing permissions and
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package org.apache.cassandra.cql3.statements;
import org.apache.cassandra.auth.Permission;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.config.Schema;
import org.apache.cassandra.config.TriggerOptions;
import org.apache.cassandra.cql3.CFName;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.exceptions.ExceptionCode;
import org.apache.cassandra.exceptions.InvalidRequestException;
import org.apache.cassandra.exceptions.RequestValidationException;
import org.apache.cassandra.exceptions.UnauthorizedException;
import org.apache.cassandra.service.ClientState;
import org.apache.cassandra.service.MigrationManager;
import org.apache.cassandra.thrift.ThriftValidation;
import org.apache.cassandra.transport.messages.ResultMessage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DropTriggerStatement extends SchemaAlteringStatement
{
private static final Logger logger = LoggerFactory.getLogger(DropTriggerStatement.class);
private final String triggerName;
public DropTriggerStatement(CFName name, String triggerName)
{
super(name);
this.triggerName = triggerName;
}
public void checkAccess(ClientState state) throws UnauthorizedException, InvalidRequestException
{
state.hasColumnFamilyAccess(keyspace(), columnFamily(), Permission.ALTER);
}
public void validate(ClientState state) throws RequestValidationException
{
ThriftValidation.validateColumnFamily(keyspace(), columnFamily());
CFMetaData cfm = Schema.instance.getCFMetaData(keyspace(), columnFamily());
if (cfm.getTriggerClasses() == null)
throw new RequestValidationException(ExceptionCode.CONFIG_ERROR, "No triggers found") {};
if (!TriggerOptions.hasTrigger(cfm, triggerName))
throw new RequestValidationException(ExceptionCode.CONFIG_ERROR, "trigger: " + triggerName + ", not found") {};
}
public void announceMigration() throws InvalidRequestException, ConfigurationException
{
CFMetaData cfm = Schema.instance.getCFMetaData(keyspace(), columnFamily()).clone();
TriggerOptions.remove(cfm, triggerName);
logger.info("Dropping trigger with name {}", triggerName);
MigrationManager.announceColumnFamilyUpdate(cfm, false);
}
public ResultMessage.SchemaChange.Change changeType()
{
return ResultMessage.SchemaChange.Change.UPDATED;
}
}