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 /*-
  * See the file LICENSE for redistribution information.
  *
  * Copyright (c) 2000, 2010 Oracle and/or its affiliates.  All rights reserved.
  *
  */
 
 package com.sleepycat.bind.tuple;
 
A concrete TupleBinding for a Long primitive wrapper or a long primitive.

There are two ways to use this class:

  1. When using the com.sleepycat.je package directly, the static methods in this class can be used to convert between primitive values and com.sleepycat.je.DatabaseEntry objects.
  2. When using the com.sleepycat.collections package, an instance of this class can be used with any stored collection. The easiest way to obtain a binding instance is with the TupleBinding.getPrimitiveBinding(java.lang.Class) method.

See also:
Integer Formats
public class LongBinding extends TupleBinding<Long> {
    private static final int LONG_SIZE = 8;
    // javadoc is inherited
    public Long entryToObject(TupleInput input) {
        return input.readLong();
    }
    // javadoc is inherited
    public void objectToEntry(Long objectTupleOutput output) {
        output.writeLong(object);
    }
    // javadoc is inherited
    protected TupleOutput getTupleOutput(Long object) {
        return sizedOutput();
    }

    
Converts an entry buffer into a simple long value.

Parameters:
entry is the source entry buffer.
Returns:
the resulting value.
    public static long entryToLong(DatabaseEntry entry) {
        return entryToInput(entry).readLong();
    }

    
Converts a simple long value into an entry buffer.

Parameters:
val is the source value.
entry is the destination entry buffer.
    public static void longToEntry(long valDatabaseEntry entry) {
        outputToEntry(sizedOutput().writeLong(val), entry);
    }

    
Returns a tuple output object of the exact size needed, to avoid wasting space when a single primitive is output.
    private static TupleOutput sizedOutput() {
        return new TupleOutput(new byte[]);
    }
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