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<a href="#pub-static-methods">Static Public Member Functions</a> &#124;
<a href="classimpala_1_1UtilityFunctions-members.html">List of all members</a> </div>
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<div class="title">impala::UtilityFunctions Class Reference</div> </div>
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<p><code>#include &lt;<a class="el" href="utility-functions_8h_source.html">utility-functions.h</a>&gt;</code></p>
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Collaboration diagram for impala::UtilityFunctions:</div>
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<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:ad2b10ebf09261e461158cb3f496116f8"><td class="memTemplParams" colspan="2">template&lt;typename T &gt; </td></tr>
<tr class="memitem:ad2b10ebf09261e461158cb3f496116f8"><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classimpala_1_1UtilityFunctions.html#ad2b10ebf09261e461158cb3f496116f8">FnvHash</a> (<a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *ctx, const T &amp;input_val)</td></tr>
<tr class="separator:ad2b10ebf09261e461158cb3f496116f8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa6be5357ed98123fec6c4c0508bcf36f"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1UtilityFunctions.html#aa6be5357ed98123fec6c4c0508bcf36f">FnvHashString</a> (<a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *ctx, const <a class="el" href="structimpala__udf_1_1StringVal.html">StringVal</a> &amp;input_val)</td></tr>
<tr class="separator:aa6be5357ed98123fec6c4c0508bcf36f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5176efda11fa215ce4cb7f483c8d2ad1"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1UtilityFunctions.html#a5176efda11fa215ce4cb7f483c8d2ad1">FnvHashTimestamp</a> (<a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *ctx, const <a class="el" href="structimpala__udf_1_1TimestampVal.html">TimestampVal</a> &amp;input_val)</td></tr>
<tr class="separator:a5176efda11fa215ce4cb7f483c8d2ad1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac362548200f28215efa166fdc12c811a"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1UtilityFunctions.html#ac362548200f28215efa166fdc12c811a">FnvHashDecimal</a> (<a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *ctx, const <a class="el" href="structimpala__udf_1_1DecimalVal.html">DecimalVal</a> &amp;input_val)</td></tr>
<tr class="separator:ac362548200f28215efa166fdc12c811a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a53f4064dd86f9875cca4f612da9f26ad"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="structimpala__udf_1_1StringVal.html">StringVal</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1UtilityFunctions.html#a53f4064dd86f9875cca4f612da9f26ad">User</a> (<a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *ctx)</td></tr>
<tr class="separator:a53f4064dd86f9875cca4f612da9f26ad"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3478cb0d9a2f1618538cc90da5886870"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="structimpala__udf_1_1StringVal.html">StringVal</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1UtilityFunctions.html#a3478cb0d9a2f1618538cc90da5886870">Version</a> (<a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *ctx)</td></tr>
<tr class="memdesc:a3478cb0d9a2f1618538cc90da5886870"><td class="mdescLeft">&#160;</td><td class="mdescRight">Implementation of the version() function. Returns the version string. <a href="#a3478cb0d9a2f1618538cc90da5886870">More...</a><br/></td></tr>
<tr class="separator:a3478cb0d9a2f1618538cc90da5886870"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a16a6e8b35490e2ea5293f06c24850b08"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="structimpala__udf_1_1IntVal.html">IntVal</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1UtilityFunctions.html#a16a6e8b35490e2ea5293f06c24850b08">Pid</a> (<a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *ctx)</td></tr>
<tr class="separator:a16a6e8b35490e2ea5293f06c24850b08"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:acce871e3397e9cf1ab945d0bdc274c7f"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="structimpala__udf_1_1BooleanVal.html">BooleanVal</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1UtilityFunctions.html#acce871e3397e9cf1ab945d0bdc274c7f">Sleep</a> (<a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *ctx, const <a class="el" href="structimpala__udf_1_1IntVal.html">IntVal</a> &amp;milliseconds)</td></tr>
<tr class="memdesc:acce871e3397e9cf1ab945d0bdc274c7f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Testing function that sleeps for the specified number of milliseconds. Returns true. <a href="#acce871e3397e9cf1ab945d0bdc274c7f">More...</a><br/></td></tr>
<tr class="separator:acce871e3397e9cf1ab945d0bdc274c7f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:adff88922839878633801fe730af24de8"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="structimpala__udf_1_1StringVal.html">StringVal</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1UtilityFunctions.html#adff88922839878633801fe730af24de8">CurrentDatabase</a> (<a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *ctx)</td></tr>
<tr class="separator:adff88922839878633801fe730af24de8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9509d15d053f7ee31180de51b20dd436"><td class="memTemplParams" colspan="2">template&lt;typename T &gt; </td></tr>
<tr class="memitem:a9509d15d053f7ee31180de51b20dd436"><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="structimpala__udf_1_1StringVal.html">StringVal</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classimpala_1_1UtilityFunctions.html#a9509d15d053f7ee31180de51b20dd436">TypeOf</a> (<a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *ctx, const T &amp;input_val)</td></tr>
<tr class="separator:a9509d15d053f7ee31180de51b20dd436"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock">
<p>Definition at line <a class="el" href="utility-functions_8h_source.html#l00029">29</a> of file <a class="el" href="utility-functions_8h_source.html">utility-functions.h</a>.</p>
</div><h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname"><a class="el" href="structimpala__udf_1_1StringVal.html">StringVal</a> impala::UtilityFunctions::CurrentDatabase </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *&#160;</td>
<td class="paramname"><em>ctx</em></td><td>)</td>
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<p>Implementation of the current_database() function. Returns the current default database from the parent session of this query. </p>
<p>Definition at line <a class="el" href="utility-functions_8cc_source.html#l00101">101</a> of file <a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a>.</p>
<p>References <a class="el" href="udf_8h_source.html#l00202">impala_udf::FunctionContext::impl()</a>, <a class="el" href="udf_8h_source.html#l00522">impala_udf::StringVal::len</a>, <a class="el" href="runtime-state_8h_source.html#l00106">impala::RuntimeState::query_ctx()</a>, and <a class="el" href="udf-internal_8h_source.html#l00095">impala::FunctionContextImpl::state()</a>.</p>
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<td class="memname">template <a class="el" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a> impala::UtilityFunctions::FnvHash </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *&#160;</td>
<td class="paramname"><em>ctx</em>, </td>
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<p>Implementations of the FnvHash function. Returns the Fowler-Noll-Vo hash of the input as an int64_t. </p>
<p>Definition at line <a class="el" href="utility-functions_8cc_source.html#l00045">45</a> of file <a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a>.</p>
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<td class="memname"><a class="el" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a> impala::UtilityFunctions::FnvHashDecimal </td>
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<td class="paramtype"><a class="el" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a> *&#160;</td>
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<td class="paramtype">const <a class="el" href="structimpala__udf_1_1DecimalVal.html">DecimalVal</a> &amp;&#160;</td>
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<p>Definition at line <a class="el" href="utility-functions_8cc_source.html#l00053">53</a> of file <a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a>.</p>
<p>References <a class="el" href="udf_8cc_source.html#l00425">impala_udf::FunctionContext::GetArgType()</a>, <a class="el" href="types_8h_source.html#l00178">impala::ColumnType::GetByteSize()</a>, <a class="el" href="udf_8h_source.html#l00359">impala_udf::AnyVal::is_null</a>, and <a class="el" href="udf_8h_source.html#l00572">impala_udf::DecimalVal::val16</a>.</p>
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<td class="memname"><a class="el" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a> impala::UtilityFunctions::FnvHashString </td>
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<td class="paramtype">const <a class="el" href="structimpala__udf_1_1StringVal.html">StringVal</a> &amp;&#160;</td>
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<p>Definition at line <a class="el" href="utility-functions_8cc_source.html#l00031">31</a> of file <a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a>.</p>
<p>References <a class="el" href="udf_8h_source.html#l00359">impala_udf::AnyVal::is_null</a>, <a class="el" href="udf_8h_source.html#l00522">impala_udf::StringVal::len</a>, and <a class="el" href="udf_8h_source.html#l00523">impala_udf::StringVal::ptr</a>.</p>
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<td class="memname"><a class="el" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a> impala::UtilityFunctions::FnvHashTimestamp </td>
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<p>Definition at line <a class="el" href="utility-functions_8cc_source.html#l00037">37</a> of file <a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a>.</p>
<p>References <a class="el" href="udf_8h_source.html#l00359">impala_udf::AnyVal::is_null</a>.</p>
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<td class="memname"><a class="el" href="structimpala__udf_1_1IntVal.html">IntVal</a> impala::UtilityFunctions::Pid </td>
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<p>Implementation of the pid() function. Returns the pid of the impalad that initiated this query. </p>
<p>Definition at line <a class="el" href="utility-functions_8cc_source.html#l00086">86</a> of file <a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a>.</p>
<p>References <a class="el" href="udf_8h_source.html#l00202">impala_udf::FunctionContext::impl()</a>, <a class="el" href="runtime-state_8h_source.html#l00106">impala::RuntimeState::query_ctx()</a>, and <a class="el" href="udf-internal_8h_source.html#l00095">impala::FunctionContextImpl::state()</a>.</p>
<p>Referenced by <a class="el" href="expr_8cc_source.html#l00470">impala::Expr::InitBuiltinsDummy()</a>.</p>
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<p>Testing function that sleeps for the specified number of milliseconds. Returns true. </p>
<p>Definition at line <a class="el" href="utility-functions_8cc_source.html#l00095">95</a> of file <a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a>.</p>
<p>References <a class="el" href="udf_8h_source.html#l00359">impala_udf::AnyVal::is_null</a>, <a class="el" href="time_8cc_source.html#l00021">impala::SleepForMs()</a>, and <a class="el" href="udf_8h_source.html#l00421">impala_udf::IntVal::val</a>.</p>
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<p>Implementation of the typeOf() function. Returns the type of the input expression. input_val is not used and it is kept here in order to let the compiler generate the corresponding fully-qualified function name. </p>
<p>Definition at line <a class="el" href="utility-functions_8cc_source.html#l00109">109</a> of file <a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a>.</p>
<p>References <a class="el" href="udf_8cc_source.html#l00425">impala_udf::FunctionContext::GetArgType()</a>, <a class="el" href="udf_8h_source.html#l00079">impala_udf::FunctionContext::TypeDesc::len</a>, <a class="el" href="udf_8h_source.html#l00075">impala_udf::FunctionContext::TypeDesc::precision</a>, <a class="el" href="udf_8h_source.html#l00076">impala_udf::FunctionContext::TypeDesc::scale</a>, <a class="el" href="types_8h_source.html#l00060">impala::ColumnType::type</a>, <a class="el" href="types_8h_source.html#l00047">impala::TYPE_CHAR</a>, <a class="el" href="types_8h_source.html#l00042">impala::TYPE_DECIMAL</a>, <a class="el" href="types_8h_source.html#l00048">impala::TYPE_VARCHAR</a>, and <a class="el" href="types_8cc_source.html#l00073">impala::TypeToString()</a>.</p>
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<td class="memname"><a class="el" href="structimpala__udf_1_1StringVal.html">StringVal</a> impala::UtilityFunctions::User </td>
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<p>Implementation of the user() function. Returns the username of the user who executed this function. </p>
<p>Definition at line <a class="el" href="utility-functions_8cc_source.html#l00076">76</a> of file <a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a>.</p>
<p>References <a class="el" href="udf_8cc_source.html#l00237">impala_udf::FunctionContext::user()</a>.</p>
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<td class="memname"><a class="el" href="structimpala__udf_1_1StringVal.html">StringVal</a> impala::UtilityFunctions::Version </td>
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<p>Implementation of the version() function. Returns the version string. </p>
<p>Definition at line <a class="el" href="utility-functions_8cc_source.html#l00082">82</a> of file <a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a>.</p>
<p>References <a class="el" href="debug-util_8cc_source.html#l00239">impala::GetVersionString()</a>.</p>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li>be/src/exprs/<a class="el" href="utility-functions_8h_source.html">utility-functions.h</a></li>
<li>be/src/exprs/<a class="el" href="utility-functions_8cc_source.html">utility-functions.cc</a></li>
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