cursor_8h-source.html

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00300 
00301     <font class="keywordtype">bool</font> isMarked(oid_t oid) { 
00302         <font class="keywordflow">return</font> bitmap != NULL &amp;&amp; (bitmap[oid &gt;&gt; 5] &amp; (1 &lt;&lt; (oid &amp; 31))) != 0;
00303     }
00304 
00305     <font class="keywordtype">void</font> mark(oid_t oid) { 
00306         <font class="keywordflow">if</font> (bitmap != NULL) { 
00307             bitmap[oid &gt;&gt; 5] |= 1 &lt;&lt; (oid &amp; 31);
00308         }
00309     }    
00310 
00311     <font class="keywordtype">bool</font> add(oid_t oid) { 
00312         <font class="keywordflow">if</font> (selection.nRows &lt; limit) { 
00313             <font class="keywordflow">if</font> (eliminateDuplicates) { 
00314                 <font class="keywordflow">if</font> (bitmap[oid &gt;&gt; 5] &amp; (1 &lt;&lt; (oid &amp; 31))) { 
00315                     <font class="keywordflow">return</font> <font class="keyword">true</font>;
00316                 }
00317                 bitmap[oid &gt;&gt; 5] |= 1 &lt;&lt; (oid &amp; 31);
00318             } 
00319             selection.add(oid);
00320             <font class="keywordflow">return</font> selection.nRows &lt; limit;
00321         } 
00322         <font class="keywordflow">return</font> <font class="keyword">false</font>;
00323     }
00324 
00325     <font class="keywordtype">bool</font> gotoNext();
00326     <font class="keywordtype">bool</font> gotoPrev(); 
00327     <font class="keywordtype">bool</font> gotoFirst();
00328     <font class="keywordtype">bool</font> gotoLast();
00329     
00330     <font class="keywordtype">void</font> setCurrent(<a class="code" href="classdbAnyReference.html">dbAnyReference</a> <font class="keyword">const</font>&amp; ref);
00331 
00332     <font class="keywordtype">void</font> fetch() { 
00333         assert(!(db-&gt;<a class="code" href="classdbDatabase.html#dbSubSqln4">currIndex</a>[currId] 
00334                  &amp; (dbInternalObjectMarker|dbFreeHandleMarker)));
00335         table-&gt;<a class="code" href="classdbTableDescriptor.html#dbTableDescriptorn4">columns</a>-&gt;<a class="code" href="classdbFieldDescriptor.html#dbFieldDescriptora7">fetchRecordFields</a>(record, 
00336                                           (byte*)db-&gt;<a class="code" href="classdbDatabase.html#dbSubSqlb4">getRow</a>(currId));
00337     }
00338 
00339     <font class="keywordtype">void</font> adjustReferences(size_t base, size_t size, <font class="keywordtype">long</font> shift) { 
00340         <font class="keywordflow">if</font> (currId != 0) { 
00341             table-&gt;<a class="code" href="classdbTableDescriptor.html#dbTableDescriptorn4">columns</a>-&gt;<a class="code" href="classdbFieldDescriptor.html#dbFieldDescriptora8">adjustReferences</a>(record, base, size, shift);
00342         }
00343     }
00344 
00345     <font class="keywordtype">void</font> setTable(<a class="code" href="classdbTableDescriptor.html">dbTableDescriptor</a>* aTable) { 
00346         table = aTable;
00347         db = aTable-&gt;<a class="code" href="classdbTableDescriptor.html#dbTableDescriptorn10">db</a>;
00348     }
00349 
00350     <font class="keywordtype">void</font> setRecord(byte* rec) { 
00351         record = rec;
00352     }
00353 
00354     dbAnyCursor(<a class="code" href="classdbTableDescriptor.html">dbTableDescriptor</a>&amp; aTable, dbCursorType aType, byte* rec)
00355     : table(&amp;aTable),type(aType),defaultType(aType),
00356       allRecords(false),currId(0),record(rec)
00357     {
00358         db = aTable.<a class="code" href="classdbTableDescriptor.html#dbTableDescriptorn10">db</a>;
00359         limit = dbDefaultSelectionLimit;
00360         updateInProgress = <font class="keyword">false</font>;
00361         prefetch = <font class="keyword">true</font>;
00362         removed = <font class="keyword">false</font>;
00363         bitmap = NULL; 
00364         bitmapSize = 0;
00365         eliminateDuplicates = <font class="keyword">false</font>;
00366         paramBase = NULL;
00367     }
00368   <font class="keyword">public</font>:
00369     dbAnyCursor() 
00370     : table(NULL),type(dbCursorViewOnly),defaultType(dbCursorViewOnly),
00371           allRecords(false),currId(0),record(NULL)
00372     {
00373         limit = dbDefaultSelectionLimit;
00374         updateInProgress = <font class="keyword">false</font>;
00375         prefetch = <font class="keyword">false</font>;
00376         removed = <font class="keyword">false</font>;
00377         bitmap = NULL;
00378         bitmapSize = 0;
00379         eliminateDuplicates = <font class="keyword">false</font>;
00380         db = NULL;
00381         paramBase = NULL;
00382     }
00383     ~dbAnyCursor();
00384 };
00385 
00386 
00390 <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt;
<a name="l00391"></a><a class="code" href="classdbCursor.html">00391</a> <font class="keyword">class </font><a class="code" href="classdbCursor.html">dbCursor</a> : <font class="keyword">public</font> dbAnyCursor { 
00392   <font class="keyword">protected</font>:
00393     T record;
00394     
00395   <font class="keyword">public</font>:
<a name="l00400"></a><a class="code" href="classdbCursor.html#dbCursora0">00400</a>     <a class="code" href="classdbCursor.html#dbCursora0">dbCursor</a>(dbCursorType type = dbCursorViewOnly) 
00401         : dbAnyCursor(T::dbDescriptor, type, (byte*)&amp;record) {}
00402 
<a name="l00409"></a><a class="code" href="classdbCursor.html#dbCursora1">00409</a>     <a class="code" href="classdbCursor.html#dbCursora0">dbCursor</a>(<a class="code" href="classdbDatabase.html">dbDatabase</a>* aDb, dbCursorType type = dbCursorViewOnly)
00410         : dbAnyCursor(T::dbDescriptor, type, (byte*)&amp;record)
00411     {
00412         db = aDb;
00413         <a class="code" href="classdbTableDescriptor.html">dbTableDescriptor</a>* theTable = db-&gt;<a class="code" href="classdbDatabase.html#dbSubSqla23">lookupTable</a>(table);
00414         <font class="keywordflow">if</font> (theTable != NULL) { 
00415             table = theTable;
00416         }
00417     }
00418 
<a name="l00423"></a><a class="code" href="classdbCursor.html#dbCursora2">00423</a>     T* <a class="code" href="classdbCursor.html#dbCursora2">get</a>() { 
00424         <font class="keywordflow">return</font> currId == 0 ? (T*)NULL : &amp;record; 
00425     }
00426     
<a name="l00431"></a><a class="code" href="classdbCursor.html#dbCursora3">00431</a>     T* <a class="code" href="classdbCursor.html#dbCursora3">next</a>() { 
00432         <font class="keywordflow">if</font> (gotoNext()) { 
00433             fetch();
00434             <font class="keywordflow">return</font> &amp;record;
00435         }
00436         <font class="keywordflow">return</font> NULL;
00437     }
00438 
<a name="l00443"></a><a class="code" href="classdbCursor.html#dbCursora4">00443</a>     T* <a class="code" href="classdbCursor.html#dbCursora4">prev</a>() { 
00444         <font class="keywordflow">if</font> (gotoPrev()) { 
00445             fetch();
00446             <font class="keywordflow">return</font> &amp;record;
00447         }
00448         <font class="keywordflow">return</font> NULL;
00449     }
00450 
<a name="l00455"></a><a class="code" href="classdbCursor.html#dbCursora5">00455</a>     T* <a class="code" href="classdbCursor.html#dbCursora5">first</a>() { 
00456         <font class="keywordflow">if</font> (gotoFirst()) {
00457             fetch();
00458             <font class="keywordflow">return</font> &amp;record;
00459         }
00460         <font class="keywordflow">return</font> NULL;
00461     }
00462 
<a name="l00467"></a><a class="code" href="classdbCursor.html#dbCursora6">00467</a>     T* <a class="code" href="classdbCursor.html#dbCursora6">last</a>() { 
00468         <font class="keywordflow">if</font> (gotoLast()) {
00469             fetch();
00470             <font class="keywordflow">return</font> &amp;record;
00471         }
00472         <font class="keywordflow">return</font> NULL;
00473     }    
00474     
<a name="l00479"></a><a class="code" href="classdbCursor.html#dbCursora7">00479</a>     T* <a class="code" href="classdbCursor.html#dbCursora7">operator -&gt;</a>() { 
00480         assert(currId != 0);
00481         <font class="keywordflow">return</font> &amp;record;
00482     }
00483 
<a name="l00489"></a><a class="code" href="classdbCursor.html#dbCursora8">00489</a>     T* <a class="code" href="classdbCursor.html#dbCursora8">at</a>(<a class="code" href="classdbReference.html">dbReference&lt;T&gt;</a> <font class="keyword">const</font>&amp; ref) { 
00490         setCurrent(ref);
00491         <font class="keywordflow">return</font> &amp;record;
00492     }
00493     
<a name="l00498"></a><a class="code" href="classdbCursor.html#dbCursora9">00498</a>     <font class="keywordtype">void</font> <a class="code" href="classdbCursor.html#dbCursora9">toArray</a>(<a class="code" href="classdbArray.html">dbArray</a>&lt; <a class="code" href="classdbReference.html">dbReference&lt;T&gt;</a> &gt;&amp; arr) { 
00499         arr.resize(selection.nRows);
00500         <a class="code" href="classdbAnyCursor.html#dbCursor_3_01Sequencer_01_4a16">toArrayOfOid</a>((oid_t*)arr.base());
00501     }
00502 
<a name="l00507"></a><a class="code" href="classdbCursor.html#dbCursora10">00507</a>     <a class="code" href="classdbReference.html">dbReference&lt;T&gt;</a> <a class="code" href="classdbCursor.html#dbCursora10">currentId</a>() { 
00508         <font class="keywordflow">return</font> <a class="code" href="classdbReference.html">dbReference&lt;T&gt;</a>(currId);
00509     }
00510 
<a name="l00527"></a><a class="code" href="classdbCursor.html#dbCursora11">00527</a>     T* <a class="code" href="classdbCursor.html#dbCursora11">nextAvailable</a>() { 
00528         <font class="keywordflow">if</font> (!removed) { 
00529             <font class="keywordflow">return</font> <a class="code" href="classdbCursor.html#dbCursora3">next</a>(); 
00530         } <font class="keywordflow">else</font> { 
00531             removed = <font class="keyword">false</font>;
00532             <font class="keywordflow">return</font> <a class="code" href="classdbCursor.html#dbCursora2">get</a>();
00533         }
00534     }
00535 };
00536 
00537 <font class="keyword">class </font>dbParallelQueryContext { 
00538   <font class="keyword">public</font>:
00539     <a class="code" href="classdbDatabase.html">dbDatabase</a>* <font class="keyword">const</font>      db;
00540     <a class="code" href="classdbCompiledQuery.html">dbCompiledQuery</a>* <font class="keyword">const</font> query;
00541     oid_t                  firstRow;
00542     <a class="code" href="classdbTable.html">dbTable</a>*               table;
00543     dbAnyCursor*           cursor;
00544     dbSelection            selection[dbMaxParallelSearchThreads];
00545 
00546     <font class="keywordtype">void</font> search(<font class="keywordtype">int</font> i); 
00547 
00548     dbParallelQueryContext(<a class="code" href="classdbDatabase.html">dbDatabase</a>* aDb, <a class="code" href="classdbTable.html">dbTable</a>* aTable, 
00549                            <a class="code" href="classdbCompiledQuery.html">dbCompiledQuery</a>* aQuery, dbAnyCursor* aCursor)
00550       : db(aDb), query(aQuery), firstRow(aTable-&gt;firstRow), table(aTable), cursor(aCursor) {}
00551 };
00552 
00553 
00554 <font class="keyword">extern</font> <font class="keywordtype">char</font>* strupper(<font class="keywordtype">char</font>* s);
00555 
00556 <font class="keyword">extern</font> <font class="keywordtype">char</font>* strlower(<font class="keywordtype">char</font>* s);
00557 
00558 <font class="preprocessor">#endif</font>
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