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Setting Up a Condition Subtree

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Note

Indexing Service is no longer supported as of Windows XP and is unavailable for use as of Windows 8. Instead, use Windows Search for client side search and Microsoft Search Server Express for server side search.

 

The following example illustrates how to set up a condition subtree representing content search restriction. It uses the PctAllocNode function declared in Allocating a DBCOMMANDTREE Structure. The condition searches for the occurrence of the word "Database" within a column named "Text".

DBCOMMANDTREE *pct1, pct2;
DBCONTENT* pdbc;
 
//Allocate content node
pct1 = PctAllocNode(DBOP_content, DBVALUEKIND_CONTENT, (sizeof DBCONTENT));
 
//set up value field
pdbc = (DBCONTENT*)(pct1->value.pvValue);
pdbc->dwGenerateMethod = GENERATE_METHOD_PREFIX;
pdbc->lWeight = 200;
pdbc->lcid = DEFAULT_LCID;
pdbc->pwszPhrase = L"Database";
 
//allocate column node
pct2 = PctAllocNode(DBOP_simple_name, DBVALUEKIND_WSTR,
  (sizeof LPWSTR));
pct2->value.pwszValue = L"Text";
 
//Make the column node a child of the Content node
pct1->pctFirstChild = pct2;