Google Git
Sign in
apache / impala / asf-site / . / doc / html / classimpala_1_1ReadWriteUtil.html
blob: 0fa32d360f124ffef3c4bee3dc77b73af805b0be [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.6"/>
<title>Impala: impala::ReadWriteUtil Class Reference</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
$(document).ready(initResizable);
$(window).load(resizeHeight);
</script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
$(document).ready(function() { searchBox.OnSelectItem(0); });
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">Impala
</div>
<div id="projectbrief">Impalaistheopensource,nativeanalyticdatabaseforApacheHadoop.</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.6 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main&#160;Page</span></a></li>
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
<li class="current"><a href="annotated.html"><span>Classes</span></a></li>
<li><a href="files.html"><span>Files</span></a></li>
<li>
<div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
</span><span class="right">
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</span>
</div>
</li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="annotated.html"><span>Class&#160;List</span></a></li>
<li><a href="classes.html"><span>Class&#160;Index</span></a></li>
<li><a href="inherits.html"><span>Class&#160;Hierarchy</span></a></li>
<li><a href="functions.html"><span>Class&#160;Members</span></a></li>
</ul>
</div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
$(document).ready(function(){initNavTree('classimpala_1_1ReadWriteUtil.html','');});
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark">&#160;</span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark">&#160;</span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark">&#160;</span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark">&#160;</span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark">&#160;</span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark">&#160;</span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark">&#160;</span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark">&#160;</span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark">&#160;</span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark">&#160;</span>Friends</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark">&#160;</span>Macros</a></div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div class="header">
<div class="summary">
<a href="#pub-methods">Public Member Functions</a> &#124;
<a href="#pub-static-methods">Static Public Member Functions</a> &#124;
<a href="#pub-static-attribs">Static Public Attributes</a> &#124;
<a href="classimpala_1_1ReadWriteUtil-members.html">List of all members</a> </div>
<div class="headertitle">
<div class="title">impala::ReadWriteUtil Class Reference</div> </div>
</div><!--header-->
<div class="contents">
<p><code>#include &lt;<a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>&gt;</code></p>
<div class="dynheader">
Collaboration diagram for impala::ReadWriteUtil:</div>
<div class="dyncontent">
<div class="center"><iframe scrolling="no" frameborder="0" src="classimpala_1_1ReadWriteUtil__coll__graph.svg" width="215" height="451"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
</div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a18a8fe331ea04ee800c6469002f88efa"><td class="memTemplParams" colspan="2">template&lt;&gt; </td></tr>
<tr class="memitem:a18a8fe331ea04ee800c6469002f88efa"><td class="memTemplItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a18a8fe331ea04ee800c6469002f88efa">GetInt</a> (const uint8_t *buf)</td></tr>
<tr class="separator:a18a8fe331ea04ee800c6469002f88efa"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a71b392cddda93cde7fc4920df750297d"><td class="memTemplParams" colspan="2">template&lt;&gt; </td></tr>
<tr class="memitem:a71b392cddda93cde7fc4920df750297d"><td class="memTemplItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a71b392cddda93cde7fc4920df750297d">GetInt</a> (const uint8_t *buf)</td></tr>
<tr class="separator:a71b392cddda93cde7fc4920df750297d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8364b11fb8db0332dd2820e6126c923d"><td class="memTemplParams" colspan="2">template&lt;&gt; </td></tr>
<tr class="memitem:a8364b11fb8db0332dd2820e6126c923d"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="classuint64__t.html">uint64_t</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a8364b11fb8db0332dd2820e6126c923d">GetInt</a> (const uint8_t *buf)</td></tr>
<tr class="separator:a8364b11fb8db0332dd2820e6126c923d"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:ab81f59e1e77d6e24e6665f324d270103"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#ab81f59e1e77d6e24e6665f324d270103">PutZInt</a> (int32_t integer, uint8_t *buf)</td></tr>
<tr class="memdesc:ab81f59e1e77d6e24e6665f324d270103"><td class="mdescLeft">&#160;</td><td class="mdescRight">Put a zigzag encoded integer into a buffer and return its length. <a href="#ab81f59e1e77d6e24e6665f324d270103">More...</a><br/></td></tr>
<tr class="separator:ab81f59e1e77d6e24e6665f324d270103"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae6cd3bf5ed4d6b5d5ec99fa3833ebe01"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#ae6cd3bf5ed4d6b5d5ec99fa3833ebe01">PutZLong</a> (int64_t longint, uint8_t *buf)</td></tr>
<tr class="memdesc:ae6cd3bf5ed4d6b5d5ec99fa3833ebe01"><td class="mdescLeft">&#160;</td><td class="mdescRight">Put a zigzag encoded long integer into a buffer and return its length. <a href="#ae6cd3bf5ed4d6b5d5ec99fa3833ebe01">More...</a><br/></td></tr>
<tr class="separator:ae6cd3bf5ed4d6b5d5ec99fa3833ebe01"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7c6d4a1dac8326ad74d6cc22bafe7408"><td class="memTemplParams" colspan="2">template&lt;typename T &gt; </td></tr>
<tr class="memitem:a7c6d4a1dac8326ad74d6cc22bafe7408"><td class="memTemplItemLeft" align="right" valign="top">static T&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a7c6d4a1dac8326ad74d6cc22bafe7408">GetInt</a> (const uint8_t *buffer)</td></tr>
<tr class="memdesc:a7c6d4a1dac8326ad74d6cc22bafe7408"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get a big endian integer from a buffer. The buffer does not have to be word aligned. <a href="#a7c6d4a1dac8326ad74d6cc22bafe7408">More...</a><br/></td></tr>
<tr class="separator:a7c6d4a1dac8326ad74d6cc22bafe7408"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1e142a430b919149e22bbb4f4c536257"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a1e142a430b919149e22bbb4f4c536257">GetVLong</a> (uint8_t *buf, int64_t *vlong)</td></tr>
<tr class="separator:a1e142a430b919149e22bbb4f4c536257"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af4fd38c7a2aa340c39adbd753912d88f"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#af4fd38c7a2aa340c39adbd753912d88f">GetVInt</a> (uint8_t *buf, int32_t *vint)</td></tr>
<tr class="separator:af4fd38c7a2aa340c39adbd753912d88f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6afd9d4695a70b5d76b8fa80e66ac2eb"><td class="memItemLeft" align="right" valign="top">static int64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a6afd9d4695a70b5d76b8fa80e66ac2eb">PutVLong</a> (int64_t val, uint8_t *buf)</td></tr>
<tr class="separator:a6afd9d4695a70b5d76b8fa80e66ac2eb"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa0926ebee26e78e9011692f2a05383c9"><td class="memItemLeft" align="right" valign="top">static int64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#aa0926ebee26e78e9011692f2a05383c9">PutVInt</a> (int32_t val, uint8_t *buf)</td></tr>
<tr class="separator:aa0926ebee26e78e9011692f2a05383c9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae16270dd4ba1a40051b152188c3e6519"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#ae16270dd4ba1a40051b152188c3e6519">VLongRequiredBytes</a> (int64_t val)</td></tr>
<tr class="memdesc:ae16270dd4ba1a40051b152188c3e6519"><td class="mdescLeft">&#160;</td><td class="mdescRight">returns size of the encoded long value, not including the 1 byte for length <a href="#ae16270dd4ba1a40051b152188c3e6519">More...</a><br/></td></tr>
<tr class="separator:ae16270dd4ba1a40051b152188c3e6519"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac31c76f8ad4dfad7488aad9cfce92ed7"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#ac31c76f8ad4dfad7488aad9cfce92ed7">GetVLong</a> (uint8_t *buf, int64_t <a class="el" href="partitioning-throughput-test_8cc.html#ad172ecfd5c31c5df6282c2b4bc322bf7">offset</a>, int64_t *vlong)</td></tr>
<tr class="separator:ac31c76f8ad4dfad7488aad9cfce92ed7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ace5d4a06269b8fdc549f5d045f9c8a02"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#ace5d4a06269b8fdc549f5d045f9c8a02">PutInt</a> (uint8_t *buf, uint16_t integer)</td></tr>
<tr class="separator:ace5d4a06269b8fdc549f5d045f9c8a02"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6eb088df4d758afce1c68956cb73c882"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a6eb088df4d758afce1c68956cb73c882">PutInt</a> (uint8_t *buf, uint32_t integer)</td></tr>
<tr class="separator:a6eb088df4d758afce1c68956cb73c882"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab30056aa8fc55ce55b457dc92f2cdc41"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#ab30056aa8fc55ce55b457dc92f2cdc41">PutInt</a> (uint8_t *buf, <a class="el" href="classuint64__t.html">uint64_t</a> integer)</td></tr>
<tr class="separator:ab30056aa8fc55ce55b457dc92f2cdc41"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9c6a8fcabb5a5edb77de5866d5a4f7f4"><td class="memItemLeft" align="right" valign="top">static std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a9c6a8fcabb5a5edb77de5866d5a4f7f4">HexDump</a> (const uint8_t *buf, int64_t length)</td></tr>
<tr class="memdesc:a9c6a8fcabb5a5edb77de5866d5a4f7f4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Dump the first length bytes of buf to a Hex string. <a href="#a9c6a8fcabb5a5edb77de5866d5a4f7f4">More...</a><br/></td></tr>
<tr class="separator:a9c6a8fcabb5a5edb77de5866d5a4f7f4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a52e9c4922085c767b4f9840ea04e8667"><td class="memItemLeft" align="right" valign="top">static std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a52e9c4922085c767b4f9840ea04e8667">HexDump</a> (const char *buf, int64_t length)</td></tr>
<tr class="separator:a52e9c4922085c767b4f9840ea04e8667"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2593f928f5cdd47690b5dc6b3dd2ad22"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classbool.html">bool</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a2593f928f5cdd47690b5dc6b3dd2ad22">IsNegativeVInt</a> (int8_t byte)</td></tr>
<tr class="memdesc:a2593f928f5cdd47690b5dc6b3dd2ad22"><td class="mdescLeft">&#160;</td><td class="mdescRight">Determines the sign of a VInt/VLong from the first byte. <a href="#a2593f928f5cdd47690b5dc6b3dd2ad22">More...</a><br/></td></tr>
<tr class="separator:a2593f928f5cdd47690b5dc6b3dd2ad22"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0a2f35674a0eed066511aa202454510f"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a0a2f35674a0eed066511aa202454510f">DecodeVIntSize</a> (int8_t byte)</td></tr>
<tr class="memdesc:a0a2f35674a0eed066511aa202454510f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Determines the total length in bytes of a Writable VInt/VLong from the first byte. <a href="#a0a2f35674a0eed066511aa202454510f">More...</a><br/></td></tr>
<tr class="separator:a0a2f35674a0eed066511aa202454510f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a77092ba12bddf8ef917abe7571faaae0"><td class="memItemLeft" align="right" valign="top">static int64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a77092ba12bddf8ef917abe7571faaae0">ReadZLong</a> (uint8_t **buf)</td></tr>
<tr class="separator:a77092ba12bddf8ef917abe7571faaae0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac4cf5e7889ed00786a256cd70a591065"><td class="memItemLeft" align="right" valign="top">static int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#ac4cf5e7889ed00786a256cd70a591065">ReadZInt</a> (uint8_t **buf)</td></tr>
<tr class="memdesc:ac4cf5e7889ed00786a256cd70a591065"><td class="mdescLeft">&#160;</td><td class="mdescRight">Read a zig-zag encoded int. <a href="#ac4cf5e7889ed00786a256cd70a591065">More...</a><br/></td></tr>
<tr class="separator:ac4cf5e7889ed00786a256cd70a591065"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aced7e41756045a1a45b5ca6ed4381a69"><td class="memTemplParams" colspan="2">template&lt;class T &gt; </td></tr>
<tr class="memitem:aced7e41756045a1a45b5ca6ed4381a69"><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="classbool.html">bool</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#aced7e41756045a1a45b5ca6ed4381a69">Read</a> (uint8_t **buf, int *buf_len, T *val, <a class="el" href="classimpala_1_1Status.html">Status</a> *status)</td></tr>
<tr class="separator:aced7e41756045a1a45b5ca6ed4381a69"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a864b12d7784e4ec7ade0a1725c1fc84a"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classbool.html">bool</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a864b12d7784e4ec7ade0a1725c1fc84a">SkipBytes</a> (uint8_t **buf, int *buf_len, int num_bytes, <a class="el" href="classimpala_1_1Status.html">Status</a> *status)</td></tr>
<tr class="memdesc:a864b12d7784e4ec7ade0a1725c1fc84a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Skip the next num_bytes bytes. <a href="#a864b12d7784e4ec7ade0a1725c1fc84a">More...</a><br/></td></tr>
<tr class="separator:a864b12d7784e4ec7ade0a1725c1fc84a"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-attribs"></a>
Static Public Attributes</h2></td></tr>
<tr class="memitem:a525af28d23515345d12cdc5c685670aa"><td class="memItemLeft" align="right" valign="top">static const int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a525af28d23515345d12cdc5c685670aa">MAX_VINT_LEN</a> = 9</td></tr>
<tr class="memdesc:a525af28d23515345d12cdc5c685670aa"><td class="mdescLeft">&#160;</td><td class="mdescRight">Maximum length for Writeable VInt. <a href="#a525af28d23515345d12cdc5c685670aa">More...</a><br/></td></tr>
<tr class="separator:a525af28d23515345d12cdc5c685670aa"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6c9ec33f885d1cab31dbbed5dbcc7df9"><td class="memItemLeft" align="right" valign="top">static const int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#a6c9ec33f885d1cab31dbbed5dbcc7df9">MAX_ZINT_LEN</a> = 5</td></tr>
<tr class="memdesc:a6c9ec33f885d1cab31dbbed5dbcc7df9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Maximum lengths for Zigzag encodings. <a href="#a6c9ec33f885d1cab31dbbed5dbcc7df9">More...</a><br/></td></tr>
<tr class="separator:a6c9ec33f885d1cab31dbbed5dbcc7df9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aff4c3d90947c072b0afdebf0c6eaa4f4"><td class="memItemLeft" align="right" valign="top">static const int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1ReadWriteUtil.html#aff4c3d90947c072b0afdebf0c6eaa4f4">MAX_ZLONG_LEN</a> = 10</td></tr>
<tr class="separator:aff4c3d90947c072b0afdebf0c6eaa4f4"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Class for reading and writing various data types. Note: be very careful using <em>signed</em> ints. Casting from a signed int to an unsigned is not a problem. However, bit shifts will do sign extension on unsigned ints, which is rarely the right thing to do for byte level operations. </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00034">34</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a class="anchor" id="a0a2f35674a0eed066511aa202454510f"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int impala::ReadWriteUtil::DecodeVIntSize </td>
<td>(</td>
<td class="paramtype">int8_t&#160;</td>
<td class="paramname"><em>byte</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Determines the total length in bytes of a Writable VInt/VLong from the first byte. </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00254">254</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>Referenced by <a class="el" href="read-write-util_8h_source.html#l00152">GetVLong()</a>, and <a class="el" href="scanner-context_8inline_8h_source.html#l00116">impala::ScannerContext::Stream::ReadVLong()</a>.</p>
</div>
</div>
<a class="anchor" id="a7c6d4a1dac8326ad74d6cc22bafe7408"></a>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">static T impala::ReadWriteUtil::GetInt </td>
<td>(</td>
<td class="paramtype">const uint8_t *&#160;</td>
<td class="paramname"><em>buffer</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Get a big endian integer from a buffer. The buffer does not have to be word aligned. </p>
</div>
</div>
<a class="anchor" id="a18a8fe331ea04ee800c6469002f88efa"></a>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">uint16_t impala::ReadWriteUtil::GetInt </td>
<td>(</td>
<td class="paramtype">const uint8_t *&#160;</td>
<td class="paramname"><em>buf</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00110">110</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
</div>
</div>
<a class="anchor" id="a71b392cddda93cde7fc4920df750297d"></a>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">uint32_t impala::ReadWriteUtil::GetInt </td>
<td>(</td>
<td class="paramtype">const uint8_t *&#160;</td>
<td class="paramname"><em>buf</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00115">115</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
</div>
</div>
<a class="anchor" id="a8364b11fb8db0332dd2820e6126c923d"></a>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;&gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classuint64__t.html">uint64_t</a> impala::ReadWriteUtil::GetInt </td>
<td>(</td>
<td class="paramtype">const uint8_t *&#160;</td>
<td class="paramname"><em>buf</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00120">120</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
</div>
</div>
<a class="anchor" id="af4fd38c7a2aa340c39adbd753912d88f"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int impala::ReadWriteUtil::GetVInt </td>
<td>(</td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int32_t *&#160;</td>
<td class="paramname"><em>vint</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00141">141</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>References <a class="el" href="read-write-util_8h_source.html#l00148">GetVLong()</a>.</p>
<p>Referenced by <a class="el" href="hdfs-rcfile-scanner_8cc_source.html#l00344">impala::HdfsRCFileScanner::GetCurrentKeyBuffer()</a>, and <a class="el" href="hdfs-rcfile-scanner_8cc_source.html#l00308">impala::HdfsRCFileScanner::ReadKeyBuffers()</a>.</p>
</div>
</div>
<a class="anchor" id="a1e142a430b919149e22bbb4f4c536257"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int impala::ReadWriteUtil::GetVLong </td>
<td>(</td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int64_t *&#160;</td>
<td class="paramname"><em>vlong</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Get a variable-length Long or int value from a byte buffer. Returns the length of the long/int If the size byte is corrupted then return -1; </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00148">148</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>Referenced by <a class="el" href="hdfs-sequence-scanner_8cc_source.html#l00103">impala::HdfsSequenceScanner::GetRecord()</a>, <a class="el" href="read-write-util_8h_source.html#l00141">GetVInt()</a>, <a class="el" href="hdfs-rcfile-scanner_8cc_source.html#l00368">impala::HdfsRCFileScanner::NextField()</a>, and <a class="el" href="hdfs-sequence-scanner_8cc_source.html#l00198">impala::HdfsSequenceScanner::ProcessDecompressedBlock()</a>.</p>
</div>
</div>
<a class="anchor" id="ac31c76f8ad4dfad7488aad9cfce92ed7"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int impala::ReadWriteUtil::GetVLong </td>
<td>(</td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int64_t&#160;</td>
<td class="paramname"><em>offset</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int64_t *&#160;</td>
<td class="paramname"><em>vlong</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Read a variable-length Long value from a byte buffer starting at the specified byte offset. </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00152">152</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>References <a class="el" href="read-write-util_8h_source.html#l00254">DecodeVIntSize()</a>, <a class="el" href="read-write-util_8h_source.html#l00250">IsNegativeVInt()</a>, and <a class="el" href="read-write-util_8h_source.html#l00037">MAX_VINT_LEN</a>.</p>
</div>
</div>
<a class="anchor" id="a9c6a8fcabb5a5edb77de5866d5a4f7f4"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">string ReadWriteUtil::HexDump </td>
<td>(</td>
<td class="paramtype">const uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int64_t&#160;</td>
<td class="paramname"><em>length</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Dump the first length bytes of buf to a Hex string. </p>
<p>Definition at line <a class="el" href="read-write-util_8cc_source.html#l00072">72</a> of file <a class="el" href="read-write-util_8cc_source.html">read-write-util.cc</a>.</p>
<p>Referenced by <a class="el" href="read-write-util_8cc_source.html#l00081">HexDump()</a>, <a class="el" href="hdfs-avro-scanner_8cc_source.html#l00099">impala::HdfsAvroScanner::ReadFileHeader()</a>, <a class="el" href="hdfs-sequence-scanner_8cc_source.html#l00345">impala::HdfsSequenceScanner::ReadFileHeader()</a>, <a class="el" href="hdfs-rcfile-scanner_8cc_source.html#l00107">impala::HdfsRCFileScanner::ReadFileHeader()</a>, and <a class="el" href="base-sequence-scanner_8cc_source.html#l00170">impala::BaseSequenceScanner::ReadSync()</a>.</p>
</div>
</div>
<a class="anchor" id="a52e9c4922085c767b4f9840ea04e8667"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">string ReadWriteUtil::HexDump </td>
<td>(</td>
<td class="paramtype">const char *&#160;</td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int64_t&#160;</td>
<td class="paramname"><em>length</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Definition at line <a class="el" href="read-write-util_8cc_source.html#l00081">81</a> of file <a class="el" href="read-write-util_8cc_source.html">read-write-util.cc</a>.</p>
<p>References <a class="el" href="read-write-util_8cc_source.html#l00072">HexDump()</a>.</p>
</div>
</div>
<a class="anchor" id="a2593f928f5cdd47690b5dc6b3dd2ad22"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classbool.html">bool</a> impala::ReadWriteUtil::IsNegativeVInt </td>
<td>(</td>
<td class="paramtype">int8_t&#160;</td>
<td class="paramname"><em>byte</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Determines the sign of a VInt/VLong from the first byte. </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00250">250</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>Referenced by <a class="el" href="read-write-util_8h_source.html#l00152">GetVLong()</a>, and <a class="el" href="scanner-context_8inline_8h_source.html#l00116">impala::ScannerContext::Stream::ReadVLong()</a>.</p>
</div>
</div>
<a class="anchor" id="ace5d4a06269b8fdc549f5d045f9c8a02"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">void impala::ReadWriteUtil::PutInt </td>
<td>(</td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint16_t&#160;</td>
<td class="paramname"><em>integer</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Put an Integer into a buffer in big endian order. The buffer must be big enough. </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00126">126</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>Referenced by <a class="el" href="hdfs-sequence-table-writer_8cc_source.html#l00054">impala::HdfsSequenceTableWriter::Init()</a>, <a class="el" href="compress_8cc_source.html#l00197">impala::SnappyBlockCompressor::ProcessBlock()</a>, <a class="el" href="read-write-util-test_8cc_source.html#l00028">impala::TestBigEndian()</a>, and <a class="el" href="write-stream_8inline_8h_source.html#l00048">impala::WriteStream::WriteInt()</a>.</p>
</div>
</div>
<a class="anchor" id="a6eb088df4d758afce1c68956cb73c882"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">void impala::ReadWriteUtil::PutInt </td>
<td>(</td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t&#160;</td>
<td class="paramname"><em>integer</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00131">131</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>References <a class="el" href="bit-util_8h_source.html#l00149">impala::BitUtil::ByteSwap()</a>.</p>
</div>
</div>
<a class="anchor" id="ab30056aa8fc55ce55b457dc92f2cdc41"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">void impala::ReadWriteUtil::PutInt </td>
<td>(</td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classuint64__t.html">uint64_t</a>&#160;</td>
<td class="paramname"><em>integer</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00136">136</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>References <a class="el" href="bit-util_8h_source.html#l00149">impala::BitUtil::ByteSwap()</a>.</p>
</div>
</div>
<a class="anchor" id="aa0926ebee26e78e9011692f2a05383c9"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int64_t impala::ReadWriteUtil::PutVInt </td>
<td>(</td>
<td class="paramtype">int32_t&#160;</td>
<td class="paramname"><em>val</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00212">212</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>References <a class="el" href="read-write-util_8h_source.html#l00191">PutVLong()</a>.</p>
<p>Referenced by <a class="el" href="write-stream_8inline_8h_source.html#l00042">impala::WriteStream::WriteVInt()</a>.</p>
</div>
</div>
<a class="anchor" id="a6afd9d4695a70b5d76b8fa80e66ac2eb"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int64_t impala::ReadWriteUtil::PutVLong </td>
<td>(</td>
<td class="paramtype">int64_t&#160;</td>
<td class="paramname"><em>val</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Writes a variable-length Long or int value to a byte buffer. Returns the number of bytes written </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00191">191</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>References <a class="el" href="read-write-util_8h_source.html#l00175">VLongRequiredBytes()</a>.</p>
<p>Referenced by <a class="el" href="read-write-util_8h_source.html#l00212">PutVInt()</a>, and <a class="el" href="write-stream_8inline_8h_source.html#l00036">impala::WriteStream::WriteVLong()</a>.</p>
</div>
</div>
<a class="anchor" id="ab81f59e1e77d6e24e6665f324d270103"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int ReadWriteUtil::PutZInt </td>
<td>(</td>
<td class="paramtype">int32_t&#160;</td>
<td class="paramname"><em>integer</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Put a zigzag encoded integer into a buffer and return its length. </p>
<p>Definition at line <a class="el" href="read-write-util_8cc_source.html#l00038">38</a> of file <a class="el" href="read-write-util_8cc_source.html">read-write-util.cc</a>.</p>
<p>Referenced by <a class="el" href="zigzag-test_8cc_source.html#l00029">impala::TestZInt()</a>, and <a class="el" href="write-stream_8inline_8h_source.html#l00054">impala::WriteStream::WriteZInt()</a>.</p>
</div>
</div>
<a class="anchor" id="ae6cd3bf5ed4d6b5d5ec99fa3833ebe01"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int ReadWriteUtil::PutZLong </td>
<td>(</td>
<td class="paramtype">int64_t&#160;</td>
<td class="paramname"><em>longint</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint8_t *&#160;</td>
<td class="paramname"><em>buf</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Put a zigzag encoded long integer into a buffer and return its length. </p>
<p>Definition at line <a class="el" href="read-write-util_8cc_source.html#l00055">55</a> of file <a class="el" href="read-write-util_8cc_source.html">read-write-util.cc</a>.</p>
<p>Referenced by <a class="el" href="zigzag-test_8cc_source.html#l00042">impala::TestZLong()</a>, and <a class="el" href="write-stream_8inline_8h_source.html#l00060">impala::WriteStream::WriteZLong()</a>.</p>
</div>
</div>
<a class="anchor" id="aced7e41756045a1a45b5ca6ed4381a69"></a>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;class T &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classbool.html">bool</a> impala::ReadWriteUtil::Read </td>
<td>(</td>
<td class="paramtype">uint8_t **&#160;</td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int *&#160;</td>
<td class="paramname"><em>buf_len</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">T *&#160;</td>
<td class="paramname"><em>val</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classimpala_1_1Status.html">Status</a> *&#160;</td>
<td class="paramname"><em>status</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>The following methods read data from a buffer without assuming the buffer is long enough. If the buffer isn't long enough or another error occurs, they return false and update the status with the error. Otherwise they return true. buffer is advanced past the data read and buf_len is decremented appropriately. Read a native type T (e.g. bool, float) directly into output (i.e. input is cast directly to T and incremented by sizeof(T)). </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00222">222</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>References <a class="el" href="compiler-util_8h_source.html#l00033">UNLIKELY</a>.</p>
<p>Referenced by <a class="el" href="hdfs-parquet-scanner_8cc_source.html#l00532">impala::HdfsParquetScanner::BaseColumnReader::ReadDataPage()</a>.</p>
</div>
</div>
<a class="anchor" id="ac4cf5e7889ed00786a256cd70a591065"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int32_t impala::ReadWriteUtil::ReadZInt </td>
<td>(</td>
<td class="paramtype">uint8_t **&#160;</td>
<td class="paramname"><em>buf</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Read a zig-zag encoded int. </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00216">216</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>References <a class="el" href="read-write-util_8cc_source.html#l00024">ReadZLong()</a>.</p>
<p>Referenced by <a class="el" href="hdfs-avro-scanner-ir_8cc_source.html#l00059">impala::HdfsAvroScanner::ReadAvroInt32()</a>, and <a class="el" href="zigzag-test_8cc_source.html#l00029">impala::TestZInt()</a>.</p>
</div>
</div>
<a class="anchor" id="a77092ba12bddf8ef917abe7571faaae0"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int64_t ReadWriteUtil::ReadZLong </td>
<td>(</td>
<td class="paramtype">uint8_t **&#160;</td>
<td class="paramname"><em>buf</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Read a zig-zag encoded long. This is the integer encoding defined by google.com protocol-buffers: <a href="https://developers.google.com/protocol-buffers/docs/encoding">https://developers.google.com/protocol-buffers/docs/encoding</a> *buf is incremented past the encoded long. </p>
<p>Definition at line <a class="el" href="read-write-util_8cc_source.html#l00024">24</a> of file <a class="el" href="read-write-util_8cc_source.html">read-write-util.cc</a>.</p>
<p>Referenced by <a class="el" href="hdfs-avro-scanner-ir_8cc_source.html#l00131">impala::HdfsAvroScanner::ReadAvroChar()</a>, <a class="el" href="hdfs-avro-scanner-ir_8cc_source.html#l00164">impala::HdfsAvroScanner::ReadAvroDecimal()</a>, <a class="el" href="hdfs-avro-scanner-ir_8cc_source.html#l00077">impala::HdfsAvroScanner::ReadAvroInt64()</a>, <a class="el" href="hdfs-avro-scanner-ir_8cc_source.html#l00152">impala::HdfsAvroScanner::ReadAvroString()</a>, <a class="el" href="hdfs-avro-scanner-ir_8cc_source.html#l00117">impala::HdfsAvroScanner::ReadAvroVarchar()</a>, <a class="el" href="read-write-util_8h_source.html#l00216">ReadZInt()</a>, and <a class="el" href="zigzag-test_8cc_source.html#l00042">impala::TestZLong()</a>.</p>
</div>
</div>
<a class="anchor" id="a864b12d7784e4ec7ade0a1725c1fc84a"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classbool.html">bool</a> impala::ReadWriteUtil::SkipBytes </td>
<td>(</td>
<td class="paramtype">uint8_t **&#160;</td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int *&#160;</td>
<td class="paramname"><em>buf_len</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>num_bytes</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classimpala_1_1Status.html">Status</a> *&#160;</td>
<td class="paramname"><em>status</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Skip the next num_bytes bytes. </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00236">236</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>References <a class="el" href="compiler-util_8h_source.html#l00033">UNLIKELY</a>.</p>
</div>
</div>
<a class="anchor" id="ae16270dd4ba1a40051b152188c3e6519"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">int impala::ReadWriteUtil::VLongRequiredBytes </td>
<td>(</td>
<td class="paramtype">int64_t&#160;</td>
<td class="paramname"><em>val</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>returns size of the encoded long value, not including the 1 byte for length </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00175">175</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>Referenced by <a class="el" href="hdfs-sequence-table-writer_8cc_source.html#l00233">impala::HdfsSequenceTableWriter::ConsumeRow()</a>, and <a class="el" href="read-write-util_8h_source.html#l00191">PutVLong()</a>.</p>
</div>
</div>
<h2 class="groupheader">Member Data Documentation</h2>
<a class="anchor" id="a525af28d23515345d12cdc5c685670aa"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">const int impala::ReadWriteUtil::MAX_VINT_LEN = 9</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Maximum length for Writeable VInt. </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00037">37</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>Referenced by <a class="el" href="read-write-util_8h_source.html#l00152">GetVLong()</a>, <a class="el" href="scanner-context_8inline_8h_source.html#l00116">impala::ScannerContext::Stream::ReadVLong()</a>, <a class="el" href="write-stream_8inline_8h_source.html#l00042">impala::WriteStream::WriteVInt()</a>, and <a class="el" href="write-stream_8inline_8h_source.html#l00036">impala::WriteStream::WriteVLong()</a>.</p>
</div>
</div>
<a class="anchor" id="a6c9ec33f885d1cab31dbbed5dbcc7df9"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">const int impala::ReadWriteUtil::MAX_ZINT_LEN = 5</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Maximum lengths for Zigzag encodings. </p>
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00040">40</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>Referenced by <a class="el" href="zigzag-test_8cc_source.html#l00029">impala::TestZInt()</a>, and <a class="el" href="write-stream_8inline_8h_source.html#l00054">impala::WriteStream::WriteZInt()</a>.</p>
</div>
</div>
<a class="anchor" id="aff4c3d90947c072b0afdebf0c6eaa4f4"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">const int impala::ReadWriteUtil::MAX_ZLONG_LEN = 10</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Definition at line <a class="el" href="read-write-util_8h_source.html#l00041">41</a> of file <a class="el" href="read-write-util_8h_source.html">read-write-util.h</a>.</p>
<p>Referenced by <a class="el" href="zigzag-test_8cc_source.html#l00042">impala::TestZLong()</a>, and <a class="el" href="write-stream_8inline_8h_source.html#l00060">impala::WriteStream::WriteZLong()</a>.</p>
</div>
</div>
<hr/>The documentation for this class was generated from the following files:<ul>
<li>be/src/exec/<a class="el" href="read-write-util_8h_source.html">read-write-util.h</a></li>
<li>be/src/exec/<a class="el" href="read-write-util_8cc_source.html">read-write-util.cc</a></li>
</ul>
</div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a class="el" href="namespaceimpala.html">impala</a></li><li class="navelem"><a class="el" href="classimpala_1_1ReadWriteUtil.html">ReadWriteUtil</a></li>
<li class="footer">Generated on Thu May 7 2015 16:10:48 for Impala by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.6 </li>
</ul>
</div>
</body>
</html>