792f606a64
Contains the cql3 grammer and supporting classes, which will be converted one by one. From commit bf599fb5b062cbcc652da78b7d699e7a01b949ad.
103 lines
4.2 KiB
Java
103 lines
4.2 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.cassandra.cql3;
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import java.nio.ByteBuffer;
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import java.util.Collections;
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import java.util.List;
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import java.util.Map;
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import org.apache.cassandra.config.CFMetaData;
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import org.apache.cassandra.db.*;
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import org.apache.cassandra.db.composites.CellName;
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import org.apache.cassandra.db.filter.ColumnSlice;
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import org.apache.cassandra.exceptions.InvalidRequestException;
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import org.apache.cassandra.utils.FBUtilities;
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/**
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* A simple container that simplify passing parameters for collections methods.
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*/
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public class UpdateParameters
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{
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public final CFMetaData metadata;
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public final QueryOptions options;
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public final long timestamp;
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private final int ttl;
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public final int localDeletionTime;
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// For lists operation that require a read-before-write. Will be null otherwise.
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private final Map<ByteBuffer, CQL3Row> prefetchedLists;
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public UpdateParameters(CFMetaData metadata, QueryOptions options, long timestamp, int ttl, Map<ByteBuffer, CQL3Row> prefetchedLists)
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throws InvalidRequestException
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{
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this.metadata = metadata;
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this.options = options;
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this.timestamp = timestamp;
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this.ttl = ttl;
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this.localDeletionTime = (int)(System.currentTimeMillis() / 1000);
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this.prefetchedLists = prefetchedLists;
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// We use MIN_VALUE internally to mean the absence of of timestamp (in Selection, in sstable stats, ...), so exclude
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// it to avoid potential confusion.
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if (timestamp == Long.MIN_VALUE)
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throw new InvalidRequestException(String.format("Out of bound timestamp, must be in [%d, %d]", Long.MIN_VALUE + 1, Long.MAX_VALUE));
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}
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public Cell makeColumn(CellName name, ByteBuffer value) throws InvalidRequestException
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{
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QueryProcessor.validateCellName(name, metadata.comparator);
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return AbstractCell.create(name, value, timestamp, ttl, metadata);
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}
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public Cell makeCounter(CellName name, long delta) throws InvalidRequestException
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{
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QueryProcessor.validateCellName(name, metadata.comparator);
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return new BufferCounterUpdateCell(name, delta, FBUtilities.timestampMicros());
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}
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public Cell makeTombstone(CellName name) throws InvalidRequestException
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{
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QueryProcessor.validateCellName(name, metadata.comparator);
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return new BufferDeletedCell(name, localDeletionTime, timestamp);
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}
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public RangeTombstone makeRangeTombstone(ColumnSlice slice) throws InvalidRequestException
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{
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QueryProcessor.validateComposite(slice.start, metadata.comparator);
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QueryProcessor.validateComposite(slice.finish, metadata.comparator);
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return new RangeTombstone(slice.start, slice.finish, timestamp, localDeletionTime);
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}
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public RangeTombstone makeTombstoneForOverwrite(ColumnSlice slice) throws InvalidRequestException
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{
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QueryProcessor.validateComposite(slice.start, metadata.comparator);
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QueryProcessor.validateComposite(slice.finish, metadata.comparator);
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return new RangeTombstone(slice.start, slice.finish, timestamp - 1, localDeletionTime);
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}
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public List<Cell> getPrefetchedList(ByteBuffer rowKey, ColumnIdentifier cql3ColumnName)
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{
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if (prefetchedLists == null)
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return Collections.emptyList();
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CQL3Row row = prefetchedLists.get(rowKey);
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return row == null ? Collections.<Cell>emptyList() : row.getMultiCellColumn(cql3ColumnName);
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}
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}
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