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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,
* 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.jackrabbit.oak.segment;
import java.util.Iterator;
import org.jetbrains.annotations.NotNull;
/**
* An implementation of a record number to offset table that assumes that a
* record number is also a valid offset in the segment. This implementation is
* useful when an instance of a table has still to be provided, but record
* numbers have no logical semantics (e.g. for bulk segments).
* <p>
* This implementation is trivially thread-safe.
*/
class IdentityRecordNumbers implements RecordNumbers {
@Override
public int getOffset(int recordNumber) {
return recordNumber;
}
@NotNull
@Override
public Iterator<Entry> iterator() {
throw new UnsupportedOperationException("invalid usage of the record-number-to-offset table");
}
}