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Neo4j property value system.
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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.neo4j.values.storable;

import org.neo4j.values.ValueMapper;

import static java.lang.String.format;
import static org.neo4j.memory.HeapEstimator.shallowSizeOfInstance;

public final class LongValue extends IntegralValue
{
    private static final long SHALLOW_SIZE = shallowSizeOfInstance( LongValue.class );

    private final long value;

    LongValue( long value )
    {
        this.value = value;
    }

    public long value()
    {
        return value;
    }

    @Override
    public long longValue()
    {
        return value;
    }

    @Override
    public int intValue()
    {
        throw new IllegalStateException( "A 64 bit integer doesn't fit in a 32 bit value" );
    }

    @Override
    public short shortValue()
    {
        throw new IllegalStateException( "A 64 bit integer doesn't fit in a 16 bit value" );
    }

    @Override
    public byte byteValue()
    {
        throw new IllegalStateException( "A 64 bit integer doesn't fit in a 8 bit value" );
    }

    @Override
    public  void writeTo( ValueWriter writer ) throws E
    {
        writer.writeInteger( value );
    }

    @Override
    public Long asObjectCopy()
    {
        return value;
    }

    @Override
    public String prettyPrint()
    {
        return Long.toString( value );
    }

    @Override
    public String toString()
    {
        return format( "%s(%d)", getTypeName(), value );
    }

    @Override
    public  T map( ValueMapper mapper )
    {
        return mapper.mapLong( this );
    }

    @Override
    public String getTypeName()
    {
        return "Long";
    }

    @Override
    public long estimatedHeapUsage()
    {
        return SHALLOW_SIZE;
    }

    @Override
    public ValueRepresentation valueRepresentation()
    {
        return ValueRepresentation.INT64;
    }
}