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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 an unsorted Long primitive wrapper or an unsorted long primitive, that stores the value in the smallest number of bytes possible.

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.

See also:
Integer Formats
public class PackedLongBinding extends TupleBinding<Long> {
    
    // javadoc is inherited
    public Long entryToObject(TupleInput input) {
        return input.readPackedLong();
    }
    
    // javadoc is inherited
    public void objectToEntry(Long objectTupleOutput output) {
        output.writePackedLong(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).readPackedLong();
    }
    
    
Converts a simple Long value into an entry buffer, using PackedLong format.

Parameters:
val is the source value.
entry is the destination entry buffer.
    public static void longToEntry(long valDatabaseEntry entry) {
        outputToEntry(sizedOutput().writePackedLong(val), entry);
    }
    
    
Returns a tuple output object of the maximum 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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