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<title>PackedInteger (Oracle - Berkeley DB Java Edition API)</title>
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<div class="subTitle">com.sleepycat.util</div>
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<h2 title="Class PackedInteger" class="title">Class PackedInteger</h2>
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<pre>public class <span class="typeNameLabel">PackedInteger</span>
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extends java.lang.Object</pre>
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<div class="block">Static methods for reading and writing packed integers.
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<p>Most applications should use the classes in the <a href="../../../com/sleepycat/bind/tuple/package-summary.html"><code>com.sleepycat.bind.tuple</code></a> package rather than using this class directly.</p></div>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../bind/tuple/package-summary.html#integerFormats">Integer Formats</a></dd>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<tr class="altColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#MAX_LENGTH">MAX_LENGTH</a></span></code>
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<div class="block">The maximum number of bytes needed to store an int value (5).</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#MAX_LONG_LENGTH">MAX_LONG_LENGTH</a></span></code>
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<div class="block">The maximum number of bytes needed to store a long value (9).</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#PackedInteger--">PackedInteger</a></span>()</code> </td>
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<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
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</tr>
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<tr id="i0" class="altColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#getReadIntLength-byte:A-int-">getReadIntLength</a></span>(byte[] buf,
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int off)</code>
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<div class="block">Returns the number of bytes that would be read by <a href="../../../com/sleepycat/util/PackedInteger.html#readInt-byte:A-int-"><code>readInt(byte[], int)</code></a>.</div>
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</td>
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</tr>
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<tr id="i1" class="rowColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#getReadLongLength-byte:A-int-">getReadLongLength</a></span>(byte[] buf,
|
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int off)</code>
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<div class="block">Returns the number of bytes that would be read by <a href="../../../com/sleepycat/util/PackedInteger.html#readLong-byte:A-int-"><code>readLong(byte[], int)</code></a>.</div>
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</td>
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</tr>
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<tr id="i2" class="altColor">
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<td class="colFirst"><code>static int</code></td>
|
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#getReadSortedIntLength-byte:A-int-">getReadSortedIntLength</a></span>(byte[] buf,
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int off)</code>
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<div class="block">Returns the number of bytes that would be read by <a href="../../../com/sleepycat/util/PackedInteger.html#readSortedInt-byte:A-int-"><code>readSortedInt(byte[], int)</code></a>.</div>
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</td>
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<tr id="i3" class="rowColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#getReadSortedLongLength-byte:A-int-">getReadSortedLongLength</a></span>(byte[] buf,
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int off)</code>
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<div class="block">Returns the number of bytes that would be read by <a href="../../../com/sleepycat/util/PackedInteger.html#readSortedLong-byte:A-int-"><code>readSortedLong(byte[], int)</code></a>.</div>
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</td>
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<tr id="i4" class="altColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#getWriteIntLength-int-">getWriteIntLength</a></span>(int value)</code>
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<div class="block">Returns the number of bytes that would be written by <a href="../../../com/sleepycat/util/PackedInteger.html#writeInt-byte:A-int-int-"><code>writeInt(byte[], int, int)</code></a>.</div>
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</td>
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</tr>
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<tr id="i5" class="rowColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#getWriteLongLength-long-">getWriteLongLength</a></span>(long value)</code>
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<div class="block">Returns the number of bytes that would be written by <a href="../../../com/sleepycat/util/PackedInteger.html#writeLong-byte:A-int-long-"><code>writeLong(byte[], int, long)</code></a>.</div>
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</td>
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<tr id="i6" class="altColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#getWriteSortedIntLength-int-">getWriteSortedIntLength</a></span>(int value)</code>
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<div class="block">Returns the number of bytes that would be written by <a href="../../../com/sleepycat/util/PackedInteger.html#writeSortedInt-byte:A-int-int-"><code>writeSortedInt(byte[], int, int)</code></a>.</div>
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</td>
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</tr>
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<tr id="i7" class="rowColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#getWriteSortedLongLength-long-">getWriteSortedLongLength</a></span>(long value)</code>
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<div class="block">Returns the number of bytes that would be written by <a href="../../../com/sleepycat/util/PackedInteger.html#writeSortedLong-byte:A-int-long-"><code>writeSortedLong(byte[], int, long)</code></a>.</div>
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</td>
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</tr>
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<tr id="i8" class="altColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#readInt-byte:A-int-">readInt</a></span>(byte[] buf,
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int off)</code>
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<div class="block">Reads a packed integer at the given buffer offset and returns it.</div>
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</td>
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</tr>
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<tr id="i9" class="rowColor">
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<td class="colFirst"><code>static long</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#readLong-byte:A-int-">readLong</a></span>(byte[] buf,
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int off)</code>
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<div class="block">Reads a packed long integer at the given buffer offset and returns it.</div>
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</td>
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</tr>
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<tr id="i10" class="altColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#readSortedInt-byte:A-int-">readSortedInt</a></span>(byte[] buf,
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int off)</code>
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<div class="block">Reads a sorted packed integer at the given buffer offset and returns it.</div>
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</td>
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</tr>
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<tr id="i11" class="rowColor">
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<td class="colFirst"><code>static long</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#readSortedLong-byte:A-int-">readSortedLong</a></span>(byte[] buf,
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int off)</code>
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<div class="block">Reads a sorted packed long integer at the given buffer offset and
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returns it.</div>
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</td>
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</tr>
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<tr id="i12" class="altColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#writeInt-byte:A-int-int-">writeInt</a></span>(byte[] buf,
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int offset,
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int value)</code>
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<div class="block">Writes a packed integer starting at the given buffer offset and returns
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the next offset to be written.</div>
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</td>
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</tr>
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<tr id="i13" class="rowColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#writeLong-byte:A-int-long-">writeLong</a></span>(byte[] buf,
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int offset,
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long value)</code>
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<div class="block">Writes a packed long integer starting at the given buffer offset and
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returns the next offset to be written.</div>
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</td>
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</tr>
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<tr id="i14" class="altColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#writeSortedInt-byte:A-int-int-">writeSortedInt</a></span>(byte[] buf,
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int offset,
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int value)</code>
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<div class="block">Writes a packed sorted integer starting at the given buffer offset and
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returns the next offset to be written.</div>
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</td>
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<tr id="i15" class="rowColor">
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<td class="colFirst"><code>static int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/util/PackedInteger.html#writeSortedLong-byte:A-int-long-">writeSortedLong</a></span>(byte[] buf,
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int offset,
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long value)</code>
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<div class="block">Writes a packed sorted long integer starting at the given buffer offset
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and returns the next offset to be written.</div>
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<h3>Methods inherited from class java.lang.Object</h3>
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<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<dt><span class="returnLabel">Returns:</span></dt>
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<div class="block">Returns the number of bytes that would be read by <a href="../../../com/sleepycat/util/PackedInteger.html#readInt-byte:A-int-"><code>readInt(byte[], int)</code></a>.
|
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|
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|
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|
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|
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|
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|
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|
||
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|
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|
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|
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|
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|
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|
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|
||
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|
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|
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|
||
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|
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|
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|
||
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|
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<pre>public static int readSortedInt(byte[] buf,
|
||
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|
||
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<div class="block">Reads a sorted packed integer at the given buffer offset and returns it.</div>
|
||
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|
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<dt><span class="paramLabel">Parameters:</span></dt>
|
||
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<dd><code>buf</code> - the buffer to read from.</dd>
|
||
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<dd><code>off</code> - the offset in the buffer at which to start reading.</dd>
|
||
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<dt><span class="returnLabel">Returns:</span></dt>
|
||
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|
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<pre>public static long readSortedLong(byte[] buf,
|
||
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|
||
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<div class="block">Reads a sorted packed long integer at the given buffer offset and
|
||
|
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|
||
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<dl>
|
||
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<dt><span class="paramLabel">Parameters:</span></dt>
|
||
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<dd><code>buf</code> - the buffer to read from.</dd>
|
||
|
<dd><code>off</code> - the offset in the buffer at which to start reading.</dd>
|
||
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<dt><span class="returnLabel">Returns:</span></dt>
|
||
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|
||
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|
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|
||
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int off)</pre>
|
||
|
<div class="block">Returns the number of bytes that would be read by <a href="../../../com/sleepycat/util/PackedInteger.html#readSortedInt-byte:A-int-"><code>readSortedInt(byte[], int)</code></a>.
|
||
|
|
||
|
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|
||
|
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|
||
|
buffer. This method only accesses one byte at the given offset.</p></div>
|
||
|
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|
||
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|
||
|
<dd><code>buf</code> - the buffer to read from.</dd>
|
||
|
<dd><code>off</code> - the offset in the buffer at which to start reading.</dd>
|
||
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|
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|
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|
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|
||
|
int off)</pre>
|
||
|
<div class="block">Returns the number of bytes that would be read by <a href="../../../com/sleepycat/util/PackedInteger.html#readSortedLong-byte:A-int-"><code>readSortedLong(byte[], int)</code></a>.
|
||
|
|
||
|
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|
||
|
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|
||
|
buffer. This method only accesses one byte at the given offset.</p></div>
|
||
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|
||
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|
||
|
<dd><code>buf</code> - the buffer to read from.</dd>
|
||
|
<dd><code>off</code> - the offset in the buffer at which to start reading.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
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|
||
|
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|
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|
||
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<pre>public static int writeSortedInt(byte[] buf,
|
||
|
int offset,
|
||
|
int value)</pre>
|
||
|
<div class="block">Writes a packed sorted integer starting at the given buffer offset and
|
||
|
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|
||
|
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|
||
|
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|
||
|
<dd><code>buf</code> - the buffer to write to.</dd>
|
||
|
<dd><code>offset</code> - the offset in the buffer at which to start writing.</dd>
|
||
|
<dd><code>value</code> - the integer to be written.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>the offset past the bytes written.</dd>
|
||
|
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|
||
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|
||
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|
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|
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<pre>public static int writeSortedLong(byte[] buf,
|
||
|
int offset,
|
||
|
long value)</pre>
|
||
|
<div class="block">Writes a packed sorted long integer starting at the given buffer offset
|
||
|
and returns the next offset to be written.</div>
|
||
|
<dl>
|
||
|
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|
||
|
<dd><code>buf</code> - the buffer to write to.</dd>
|
||
|
<dd><code>offset</code> - the offset in the buffer at which to start writing.</dd>
|
||
|
<dd><code>value</code> - the long integer to be written.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>the offset past the bytes written.</dd>
|
||
|
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|
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|
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|
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<pre>public static int getWriteSortedIntLength(int value)</pre>
|
||
|
<div class="block">Returns the number of bytes that would be written by <a href="../../../com/sleepycat/util/PackedInteger.html#writeSortedInt-byte:A-int-int-"><code>writeSortedInt(byte[], int, int)</code></a>.</div>
|
||
|
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|
||
|
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|
||
|
<dd><code>value</code> - the integer to be written.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>the number of bytes that would be used to write the given
|
||
|
integer.</dd>
|
||
|
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|
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|
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|
||
|
<div class="block">Returns the number of bytes that would be written by <a href="../../../com/sleepycat/util/PackedInteger.html#writeSortedLong-byte:A-int-long-"><code>writeSortedLong(byte[], int, long)</code></a>.</div>
|
||
|
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|
||
|
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|
||
|
<dd><code>value</code> - the long integer to be written.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>the number of bytes that would be used to write the given long
|
||
|
integer.</dd>
|
||
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