Function IsTextIndexMatch

pg_documentdb/src/index_am/rum.c:1014–1030

* Returns true if the IndexPath corresponds to a "text" * index. This is used to force the index cost to 0 to make sure * we use the text index. */

 * we use the text index.
 */
static bool
IsTextIndexMatch(IndexPath *path)
{
	ListCell *cell;
	foreach(cell, path->indexclauses)
	{
		IndexClause *clause = lfirst(cell);
		if (IsTextPathOpFamilyOid(
				path->indexinfo->relam,
				path->indexinfo->opfamily[clause->indexcol]))
		{
			return true;
		}
	}

	return false;
}


static IndexScanDesc