org.apache.jena.tdb.base.objectfile.ObjectFileReadonly Maven / Gradle / Ivy

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TDB is a storage subsystem for Jena and ARQ, it is a native triple store providing persistent storage of triples/quads.

There is a newer version: 4.10.0

/*
 * 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,
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package org.apache.jena.tdb.base.objectfile;

import java.nio.ByteBuffer ;

import org.apache.jena.tdb.TDBException;
import org.apache.jena.tdb.base.block.Block ;

public class ObjectFileReadonly extends ObjectFileWrapper
{
    public ObjectFileReadonly(ObjectFile other)         { super(other) ; }
    @Override public Block allocWrite(int maxBytes)     { throw new TDBException("Read-only object file") ; }
    @Override public void completeWrite(Block buffer)   { throw new TDBException("Read-only object file") ; }
    @Override public void abortWrite(Block buffer)      { throw new TDBException("Read-only object file") ; }
    @Override public long write(ByteBuffer buffer)      { throw new TDBException("Read-only object file") ; }
    @Override public void reposition(long id)           { throw new TDBException("Read-only object file") ; }
    @Override public void truncate(long size)           { throw new TDBException("Read-only object file") ; }
    
    @Override public String toString()              { return "RO:"+super.toString() ; } 
}