/*
* 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.cql3;
import java.nio.ByteBuffer;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.cql3.statements.ColumnGroupMap;
import org.apache.cassandra.db.*;
import org.apache.cassandra.exceptions.InvalidRequestException;
import org.apache.cassandra.utils.Pair;
/**
* A simple container that simplify passing parameters for collections methods.
*/
public class UpdateParameters
{
public final CFMetaData metadata;
public final List<ByteBuffer> variables;
public final long timestamp;
private final int ttl;
public final int localDeletionTime;
// For lists operation that require a read-before-write. Will be null otherwise.
private final Map<ByteBuffer, ColumnGroupMap> prefetchedLists;
public UpdateParameters(CFMetaData metadata, List<ByteBuffer> variables, long timestamp, int ttl, Map<ByteBuffer, ColumnGroupMap> prefetchedLists)
throws InvalidRequestException
{
this.metadata = metadata;
this.variables = variables;
this.timestamp = timestamp;
this.ttl = ttl;
this.localDeletionTime = (int)(System.currentTimeMillis() / 1000);
this.prefetchedLists = prefetchedLists;
// We use MIN_VALUE internally to mean the absence of of timestamp (in Selection, in sstable stats, ...), so exclude
// it to avoid potential confusion.
if (timestamp == Long.MIN_VALUE)
throw new InvalidRequestException(String.format("Out of bound timestamp, must be in [%d, %d]", Long.MIN_VALUE + 1, Long.MAX_VALUE));
}
public Column makeColumn(ByteBuffer name, ByteBuffer value) throws InvalidRequestException
{
QueryProcessor.validateCellName(name);
return Column.create(name, value, timestamp, ttl, metadata);
}
public Column makeCounter(ByteBuffer name, long delta) throws InvalidRequestException
{
QueryProcessor.validateCellName(name);
return new CounterUpdateColumn(name, delta, System.currentTimeMillis());
}
public Column makeTombstone(ByteBuffer name) throws InvalidRequestException
{
QueryProcessor.validateCellName(name);
return new DeletedColumn(name, localDeletionTime, timestamp);
}
public RangeTombstone makeRangeTombstone(ByteBuffer start, ByteBuffer end) throws InvalidRequestException
{
QueryProcessor.validateCellName(start);
QueryProcessor.validateCellName(end);
return new RangeTombstone(start, end, timestamp, localDeletionTime);
}
public RangeTombstone makeTombstoneForOverwrite(ByteBuffer start, ByteBuffer end) throws InvalidRequestException
{
QueryProcessor.validateCellName(start);
QueryProcessor.validateCellName(end);
return new RangeTombstone(start, end, timestamp - 1, localDeletionTime);
}
public List<Pair<ByteBuffer, Column>> getPrefetchedList(ByteBuffer rowKey, ByteBuffer cql3ColumnName)
{
if (prefetchedLists == null)
return Collections.emptyList();
ColumnGroupMap m = prefetchedLists.get(rowKey);
return m == null ? Collections.<Pair<ByteBuffer, Column>>emptyList() : m.getCollection(cql3ColumnName);
}
}