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<title>&nbsp; Apache Ignite C++: ignite::cache::query::QueryFieldsCursor Class Reference</title>
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<li class="navelem"><a class="el" href="namespaceignite.html">ignite</a></li><li class="navelem"><a class="el" href="namespaceignite_1_1cache.html">cache</a></li><li class="navelem"><a class="el" href="namespaceignite_1_1cache_1_1query.html">query</a></li><li class="navelem"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsCursor.html">QueryFieldsCursor</a></li> </ul>
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<div class="summary">
<a href="#pub-methods">Public Member Functions</a> &#124;
<a href="classignite_1_1cache_1_1query_1_1QueryFieldsCursor-members.html">List of all members</a> </div>
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<div class="title">ignite::cache::query::QueryFieldsCursor Class Reference</div> </div>
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<p>Query fields cursor.
<a href="classignite_1_1cache_1_1query_1_1QueryFieldsCursor.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="query__fields__cursor_8h_source.html">query_fields_cursor.h</a>&gt;</code></p>
<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:a468430a34c1e20b54b88f31856790652"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsCursor.html#a468430a34c1e20b54b88f31856790652">QueryFieldsCursor</a> ()</td></tr>
<tr class="memdesc:a468430a34c1e20b54b88f31856790652"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default constructor. <a href="#a468430a34c1e20b54b88f31856790652">More...</a><br /></td></tr>
<tr class="separator:a468430a34c1e20b54b88f31856790652"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a14bcf4ecd61720655701ec14dab5dedc"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsCursor.html#a14bcf4ecd61720655701ec14dab5dedc">QueryFieldsCursor</a> (impl::cache::query::QueryCursorImpl *impl)</td></tr>
<tr class="memdesc:a14bcf4ecd61720655701ec14dab5dedc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <a href="#a14bcf4ecd61720655701ec14dab5dedc">More...</a><br /></td></tr>
<tr class="separator:a14bcf4ecd61720655701ec14dab5dedc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af7bc420f70745fc5ef6de141c40303db"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsCursor.html#af7bc420f70745fc5ef6de141c40303db">HasNext</a> ()</td></tr>
<tr class="memdesc:af7bc420f70745fc5ef6de141c40303db"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check whether next entry exists. <a href="#af7bc420f70745fc5ef6de141c40303db">More...</a><br /></td></tr>
<tr class="separator:af7bc420f70745fc5ef6de141c40303db"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9090db6a321a717a7957f7fc11c1656b"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsCursor.html#a9090db6a321a717a7957f7fc11c1656b">HasNext</a> (<a class="el" href="classignite_1_1IgniteError.html">IgniteError</a> &amp;err)</td></tr>
<tr class="memdesc:a9090db6a321a717a7957f7fc11c1656b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check whether next entry exists. <a href="#a9090db6a321a717a7957f7fc11c1656b">More...</a><br /></td></tr>
<tr class="separator:a9090db6a321a717a7957f7fc11c1656b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab19d521591e6aed8ec691373242ccd9a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsRow.html">QueryFieldsRow</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsCursor.html#ab19d521591e6aed8ec691373242ccd9a">GetNext</a> ()</td></tr>
<tr class="memdesc:ab19d521591e6aed8ec691373242ccd9a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get next entry. <a href="#ab19d521591e6aed8ec691373242ccd9a">More...</a><br /></td></tr>
<tr class="separator:ab19d521591e6aed8ec691373242ccd9a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aae0d0cd8d58dc09cc608c77b343c7192"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsRow.html">QueryFieldsRow</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsCursor.html#aae0d0cd8d58dc09cc608c77b343c7192">GetNext</a> (<a class="el" href="classignite_1_1IgniteError.html">IgniteError</a> &amp;err)</td></tr>
<tr class="memdesc:aae0d0cd8d58dc09cc608c77b343c7192"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get next entry. <a href="#aae0d0cd8d58dc09cc608c77b343c7192">More...</a><br /></td></tr>
<tr class="separator:aae0d0cd8d58dc09cc608c77b343c7192"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aae58098f391268d7c50ad754a597959b"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsCursor.html#aae58098f391268d7c50ad754a597959b">IsValid</a> () const</td></tr>
<tr class="memdesc:aae58098f391268d7c50ad754a597959b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if the instance is valid. <a href="#aae58098f391268d7c50ad754a597959b">More...</a><br /></td></tr>
<tr class="separator:aae58098f391268d7c50ad754a597959b"><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>Query fields cursor. </p>
<p>This class implemented as a reference to an implementation so copying of this class instance will only create another reference to the same underlying object. Underlying object released automatically once all the instances are destructed. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a468430a34c1e20b54b88f31856790652"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a468430a34c1e20b54b88f31856790652">&#9670;&nbsp;</a></span>QueryFieldsCursor() <span class="overload">[1/2]</span></h2>
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<td class="memname">ignite::cache::query::QueryFieldsCursor::QueryFieldsCursor </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
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<p>Default constructor. </p>
<p>Constructed instance is not valid and thus can not be used as a cursor. </p>
</div>
</div>
<a id="a14bcf4ecd61720655701ec14dab5dedc"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a14bcf4ecd61720655701ec14dab5dedc">&#9670;&nbsp;</a></span>QueryFieldsCursor() <span class="overload">[2/2]</span></h2>
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<td class="memname">ignite::cache::query::QueryFieldsCursor::QueryFieldsCursor </td>
<td>(</td>
<td class="paramtype">impl::cache::query::QueryCursorImpl *&#160;</td>
<td class="paramname"><em>impl</em></td><td>)</td>
<td></td>
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<p>Constructor. </p>
<p>Internal method. Should not be used by user.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">impl</td><td>Implementation. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a id="ab19d521591e6aed8ec691373242ccd9a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab19d521591e6aed8ec691373242ccd9a">&#9670;&nbsp;</a></span>GetNext() <span class="overload">[1/2]</span></h2>
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<td class="memname"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsRow.html">QueryFieldsRow</a> ignite::cache::query::QueryFieldsCursor::GetNext </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
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<p>Get next entry. </p>
<p>This method should only be used on the valid instance.</p>
<dl class="section return"><dt>Returns</dt><dd>Next entry.</dd></dl>
<dl class="exception"><dt>Exceptions</dt><dd>
<table class="exception">
<tr><td class="paramname"><a class="el" href="classignite_1_1IgniteError.html" title="Ignite error information. ">IgniteError</a></td><td>class instance in case of failure. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="aae0d0cd8d58dc09cc608c77b343c7192"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aae0d0cd8d58dc09cc608c77b343c7192">&#9670;&nbsp;</a></span>GetNext() <span class="overload">[2/2]</span></h2>
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<td class="memname"><a class="el" href="classignite_1_1cache_1_1query_1_1QueryFieldsRow.html">QueryFieldsRow</a> ignite::cache::query::QueryFieldsCursor::GetNext </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classignite_1_1IgniteError.html">IgniteError</a> &amp;&#160;</td>
<td class="paramname"><em>err</em></td><td>)</td>
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<p>Get next entry. </p>
<p>Properly sets error param in case of failure.</p>
<p>This method should only be used on the valid instance.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">err</td><td>Used to set operation result. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Next entry on success and invalid row instance on failure. </dd></dl>
</div>
</div>
<a id="af7bc420f70745fc5ef6de141c40303db"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af7bc420f70745fc5ef6de141c40303db">&#9670;&nbsp;</a></span>HasNext() <span class="overload">[1/2]</span></h2>
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<td class="memname">bool ignite::cache::query::QueryFieldsCursor::HasNext </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
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</td>
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<p>Check whether next entry exists. </p>
<p>This method should only be used on the valid instance.</p>
<dl class="section return"><dt>Returns</dt><dd>True if next entry exists.</dd></dl>
<dl class="exception"><dt>Exceptions</dt><dd>
<table class="exception">
<tr><td class="paramname"><a class="el" href="classignite_1_1IgniteError.html" title="Ignite error information. ">IgniteError</a></td><td>class instance in case of failure. </td></tr>
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</dd>
</dl>
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<a id="a9090db6a321a717a7957f7fc11c1656b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9090db6a321a717a7957f7fc11c1656b">&#9670;&nbsp;</a></span>HasNext() <span class="overload">[2/2]</span></h2>
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<td class="memname">bool ignite::cache::query::QueryFieldsCursor::HasNext </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classignite_1_1IgniteError.html">IgniteError</a> &amp;&#160;</td>
<td class="paramname"><em>err</em></td><td>)</td>
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<p>Check whether next entry exists. </p>
<p>Properly sets error param in case of failure.</p>
<p>This method should only be used on the valid instance.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">err</td><td>Used to set operation result. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>True if next entry exists and operation resulted in success. Returns false on failure. </dd></dl>
</div>
</div>
<a id="aae58098f391268d7c50ad754a597959b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aae58098f391268d7c50ad754a597959b">&#9670;&nbsp;</a></span>IsValid()</h2>
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<td class="memname">bool ignite::cache::query::QueryFieldsCursor::IsValid </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Check if the instance is valid. </p>
<p>Invalid instance can be returned if some of the previous operations have resulted in a failure. For example invalid instance can be returned by not-throwing version of method in case of error. Invalid instances also often can be created using default constructor.</p>
<dl class="section return"><dt>Returns</dt><dd>True if the instance is valid and can be used. </dd></dl>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="query__fields__cursor_8h_source.html">query_fields_cursor.h</a></li>
</ul>
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