/*
* Licensed to STRATIO (C) under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional information
* regarding copyright ownership. The STRATIO (C) 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 com.stratio.cassandra.lucene;
import org.apache.cassandra.db.DecoratedKey;
import org.apache.cassandra.db.DeletionTime;
import org.apache.cassandra.db.RangeTombstone;
import org.apache.cassandra.db.rows.Row;
import org.apache.cassandra.index.transactions.IndexTransaction;
import org.apache.cassandra.utils.concurrent.OpOrder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* {@link Index.Indexer} for Lucene-based index.
*
* @author Andres de la Pena {@literal <adelapena@stratio.com>}
*/
public abstract class IndexWriter implements Index.Indexer {
protected static final Logger logger = LoggerFactory.getLogger(IndexWriter.class);
protected final IndexService service;
protected final DecoratedKey key;
protected final int nowInSec;
protected final OpOrder.Group opGroup;
protected final IndexTransaction.Type transactionType;
/**
* Abstract constructor.
*
* @param service the service to perform the indexing operation
* @param key key of the partition being modified
* @param nowInSec current time of the update operation
* @param opGroup operation group spanning the update operation
* @param transactionType what kind of update is being performed on the base data
*/
protected IndexWriter(IndexService service,
DecoratedKey key,
int nowInSec,
OpOrder.Group opGroup,
IndexTransaction.Type transactionType) {
this.service = service;
this.key = key;
this.nowInSec = nowInSec;
this.opGroup = opGroup;
this.transactionType = transactionType;
}
/** {@inheritDoc} */
@Override
public void begin() {
}
/** {@inheritDoc} */
@Override
public void partitionDelete(DeletionTime deletionTime) {
logger.trace("Delete partition during {}: {}", transactionType, deletionTime);
delete();
}
/** {@inheritDoc} */
@Override
public void rangeTombstone(RangeTombstone tombstone) {
logger.trace("Range tombstone during {}: {}", transactionType, tombstone);
}
/** {@inheritDoc} */
@Override
public void insertRow(Row row) {
logger.trace("Insert rows during {}: {}", transactionType, row);
index(row);
}
/** {@inheritDoc} */
@Override
public void updateRow(Row oldRowData, Row newRowData) {
logger.trace("Update row during {}: {} TO {}", transactionType, oldRowData, newRowData);
index(newRowData);
}
/** {@inheritDoc} */
@Override
public void removeRow(Row row) {
logger.trace("Remove row during {}: {}", transactionType, row);
index(row);
}
/**
* Deletes all the partition.
*/
protected abstract void delete();
/**
* Indexes the specified partition's {@link Row}. It behaviours as an upsert and may involve read-before-write.
*
* @param row the row to be indexed.
*/
protected abstract void index(Row row);
}