/*
* Copyright 2012 NGDATA nv
*
* Licensed 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.lilyproject.repository.impl.filter;
import org.apache.hadoop.hbase.filter.Filter;
import org.apache.hadoop.hbase.filter.PrefixFilter;
import org.lilyproject.repository.api.LRepository;
import org.lilyproject.repository.api.RecordId;
import org.lilyproject.repository.api.RepositoryException;
import org.lilyproject.repository.api.filter.RecordFilter;
import org.lilyproject.repository.api.filter.RecordIdPrefixFilter;
import org.lilyproject.repository.spi.HBaseRecordFilterFactory;
public class HBaseRecordIdPrefixFilter implements HBaseRecordFilterFactory {
@Override
public Filter createHBaseFilter(RecordFilter uncastFilter, LRepository repository, HBaseRecordFilterFactory factory)
throws RepositoryException, InterruptedException {
if (!(uncastFilter instanceof RecordIdPrefixFilter)) {
return null;
}
RecordIdPrefixFilter filter = (RecordIdPrefixFilter) uncastFilter;
if (filter.getRecordId() == null) {
throw new IllegalArgumentException("Record ID should be specified in RecordIdPrefixFilter");
}
RecordId recordId = filter.getRecordId();
byte[] rowKeyPrefix = recordId.toBytes();
return new PrefixFilter(rowKeyPrefix);
}
}