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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title> TemplatedbCursor< T > class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.18 --><center><a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Compound Members</a> </center><hr><h1>dbCursor< T > Class Template Reference</h1><code>#include <<a class="el" href="cursor_8h-source.html">cursor.h</a>></code><p><p>Inheritance diagram for dbCursor< T >:<p><center><img src="classdbCursor.png" usemap="#dbCursor< T >_map" border="0" alt=""></center><map name="dbCursor< T >_map"><area href="classdbAnyCursor.html" alt="dbAnyCursor" shape="rect" coords="0,56,96,80"><area href="classdbL2List.html" alt="dbL2List" shape="rect" coords="0,0,96,24"></map><a href="classdbCursor-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0><tr><td></td></tr><tr><td colspan=2><br><h2>Public Methods</h2></td></tr><tr><td nowrap align=right valign=top> </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora0">dbCursor</a> (dbCursorType type=dbCursorViewOnly)</td></tr><tr><td nowrap align=right valign=top> </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora1">dbCursor</a> (<a class="el" href="classdbDatabase.html">dbDatabase</a> *aDb, dbCursorType type=dbCursorViewOnly)</td></tr><tr><td nowrap align=right valign=top>T * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora2">get</a> ()</td></tr><tr><td nowrap align=right valign=top>T * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora3">next</a> ()</td></tr><tr><td nowrap align=right valign=top>T * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora4">prev</a> ()</td></tr><tr><td nowrap align=right valign=top>T * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora5">first</a> ()</td></tr><tr><td nowrap align=right valign=top>T * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora6">last</a> ()</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora7">seek</a> (<a class="el" href="classdbReference.html">dbReference</a>< T > const &ref)</td></tr><tr><td nowrap align=right valign=top>T * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora8">operator-></a> ()</td></tr><tr><td nowrap align=right valign=top>T * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora9">at</a> (<a class="el" href="classdbReference.html">dbReference</a>< T > const &ref)</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora10">toArray</a> (<a class="el" href="classdbArray.html">dbArray</a>< <a class="el" href="classdbReference.html">dbReference</a>< T > > &arr) const</td></tr><tr><td nowrap align=right valign=top><a class="el" href="classdbReference.html">dbReference</a>< T > </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora11">currentId</a> () const</td></tr><tr><td nowrap align=right valign=top>T * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora12">nextAvailable</a> ()</td></tr><tr><td nowrap align=right valign=top>T * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora13">prevAvailable</a> ()</td></tr><tr><td nowrap align=right valign=top>bool </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursora14">isInSelection</a> (<a class="el" href="classdbReference.html">dbReference</a>< T > &ref)</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a15">getNumberOfRecords</a> () const</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a16">remove</a> ()</td></tr><tr><td nowrap align=right valign=top>bool </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a17">isEmpty</a> () const</td></tr><tr><td nowrap align=right valign=top>bool </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a19">isUpdateCursor</a> () const</td></tr><tr><td nowrap align=right valign=top>bool </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a20">isLimitReached</a> () const</td></tr><tr><td nowrap align=right valign=top>oid_t * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a21">toArrayOfOid</a> (oid_t *arr) const</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a22">select</a> (<a class="el" href="classdbQuery.html">dbQuery</a> &query, dbCursorType aType, void *paramStruct=NULL)</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a23">select</a> (<a class="el" href="classdbQuery.html">dbQuery</a> &query, void *paramStruct=NULL)</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a24">select</a> (char const *condition, dbCursorType aType, void *paramStruct=NULL)</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a25">select</a> (char const *condition, void *paramStruct=NULL)</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a26">select</a> (dbCursorType aType)</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a27">select</a> ()</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a28">selectByKey</a> (char const *key, void const *value)</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a29">selectByKeyRange</a> (char const *key, void const *minValue, void const *maxValue)</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a30">update</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a31">removeAll</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a32">removeAllSelected</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a33">setSelectionLimit</a> (size_t lim)</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a34">unsetSelectionLimit</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a35">setPrefetchMode</a> (bool mode)</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a36">reset</a> ()</td></tr><tr><td nowrap align=right valign=top>bool </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a37">isLast</a> () const</td></tr><tr><td nowrap align=right valign=top>bool </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a38">isFirst</a> () const</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a39">freeze</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a40">unfreeze</a> ()</td></tr><tr><td nowrap align=right valign=top>bool </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a41">skip</a> (int n)</td></tr><tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a42">seek</a> (oid_t oid)</td></tr><tr><td nowrap align=right valign=top><a class="el" href="classdbTableDescriptor.html">dbTableDescriptor</a> * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a43">getTable</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a44">setTable</a> (<a class="el" href="classdbTableDescriptor.html">dbTableDescriptor</a> *aTable)</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a45">setRecord</a> (void *rec)</td></tr><tr><td nowrap align=right valign=top>void * </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a46">getRecord</a> ()</td></tr><tr><td nowrap align=right valign=top>bool </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a47">isInSelection</a> (oid_t oid)</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a48">fetch</a> ()</td></tr><tr><td nowrap align=right valign=top>bool </td><td valign=bottom><a class="el" href="classdbCursor.html#dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a49">hasNext</a> () const</td></tr><tr><td colspan=2><br><h2>Protected Attributes</h2></td></tr><tr><td nowrap align=right valign=top><a name="dbCursorn0" doxytag="dbCursor::record"></a>T </td><td valign=bottom><b>record</b></td></tr></table><hr><a name="_details"></a><h2>Detailed Description</h2><h3>template<class T><br> class dbCursor< T ></h3>Cursor template parameterized by table class <p><hr><h2>Constructor & Destructor Documentation</h2><a name="dbCursora0" doxytag="dbCursor::dbCursor"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" colspan="4">template<class T> </td> </tr> <tr> <td class="md" nowrap valign="top"> dbCursor< T >::dbCursor </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">dbCursorType </td> <td class="mdname1" valign="top" nowrap> <em>type</em> = dbCursorViewOnly </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [inline]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Cursor constructor <dl compact><dt><b>Parameters: </b></dt><dd><table border=0 cellspacing=2 cellpadding=0><tr><td valign=top><em>type</em> </td><td>cursor type (dbCursorViewOnly by default) </td></tr></table></dl> </td> </tr></table><a name="dbCursora1" doxytag="dbCursor::dbCursor"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" colspan="4">template<class T> </td> </tr> <tr> <td class="md" nowrap valign="top"> dbCursor< T >::dbCursor </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top"><a class="el" href="classdbDatabase.html">dbDatabase</a> * </td> <td class="mdname" nowrap> <em>aDb</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap>dbCursorType </td> <td class="mdname" nowrap> <em>type</em> = dbCursorViewOnly</td> </tr> <tr> <td></td> <td class="md">) </td> <td class="md" colspan="2"><code> [inline]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Cursor constructor with explicit specification of database. This cursor should be used for unassigned tables. <dl compact><dt><b>Parameters: </b></dt><dd><table border=0 cellspacing=2 cellpadding=0><tr><td valign=top><em>aDb</em> </td><td>database in which table lookup is performed </td></tr><tr><td valign=top><em>type</em> </td><td>cursor type (dbCursorViewOnly by default) </td></tr></table></dl> </td> </tr></table><hr><h2>Member Function Documentation</h2><a name="dbCursora9" doxytag="dbCursor::at"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" colspan="4">template<class T> </td> </tr> <tr> <td class="md" nowrap valign="top"> T* dbCursor< T >::at </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top"><a class="el" href="classdbReference.html">dbReference</a>< T > const & </td> <td class="mdname1" valign="top" nowrap> <em>ref</em> </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [inline]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Select record by reference <dl compact><dt><b>Parameters: </b></dt><dd><table border=0 cellspacing=2 cellpadding=0><tr><td valign=top><em>ref</em> </td><td>reference to the record </td></tr></table></dl><dl compact><dt><b>Returns: </b></dt><dd>pointer to the referenced record </dl> </td> </tr></table><a name="dbCursora11" doxytag="dbCursor::currentId"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" colspan="4">template<class T> </td> </tr> <tr> <td class="md" nowrap valign="top"> <a class="el" href="classdbReference.html">dbReference</a><T> dbCursor< T >::currentId </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap> const<code> [inline]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Get current object idenitifer <dl compact><dt><b>Returns: </b></dt><dd>reference to the current record </dl> </td> </tr></table><a name="dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a48" doxytag="dbCursor::fetch"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> void dbAnyCursor::fetch </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [inline, inherited]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Fetch current record. You should use this method only if prefetch mode is disabled </td> </tr></table><a name="dbCursora5" doxytag="dbCursor::first"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" colspan="4">template<class T> </td> </tr> <tr> <td class="md" nowrap valign="top"> T* dbCursor< T >::first </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [inline]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Get pointer to the first record <dl compact><dt><b>Returns: </b></dt><dd>pointer to the first record or <code>NULL</code> if no records were selected </dl> </td> </tr></table><a name="dbCursor_3_01dbTimeSeriesBlock_3_01T_01_4_01_4a39" doxytag="dbCursor::freeze"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> void dbAnyCursor::freeze </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [inherited]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Freeze cursor. This method makes it possible to save current state of cursor, close transaction to allow other threads to proceed, and then later restore state of the cursor using unfreeze method and continue traversal through selected records. </td> </tr></table><a name="dbCursora2" doxytag="dbCursor::get"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" colspan="4">template<class T> </td> </tr> <tr> <td class="md" nowrap valign="top"> T* dbCursor< T >::get </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [inline]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr>⌨️ 快捷键说明
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