Peter M. Groen / knowledgetree

Commit ede208a183744603a62019fbb4a4e92017bbdd12

Authored by Neil Blakey-Milner 2005-11-10 15:31:06 +0000

SearchUtil helps in searches, particularly in converting criteria sets

to SQL queries that will find the documents in question.


git-svn-id: https://kt-dms.svn.sourceforge.net/svnroot/kt-dms/trunk@3948 c91229c3-7414-0410-bfa2-8a42b809f60b

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Showing 1 changed file with 136 additions and 0 deletions

lib/search/searchutil.inc.php 0 → 100644

View file @ede208a

	1	+<?php
	2	+
	3	+class KTSearchUtil {
	4	+ function _oneCriteriaSetToSQL($aOneCriteriaSet) {
	5	+ $aSQL = array();
	6	+ $aJoinSQL = array();
	7	+ $criteria_set = array();
	8	+ foreach ($aOneCriteriaSet as $order => $dataset) {
	9	+ $type = KTUtil::arrayGet($dataset, "type");
	10	+ $sql = KTUtil::arrayGet($dataset, "sql");
	11	+ if (!empty($type)) {
	12	+ $oCriterion = Criteria::getCriterionByNumber($dataset["type"]);
	13	+ if (PEAR::isError($oCriterion)) {
	14	+ return PEAR::raiseError('Invalid criteria specified.');
	15	+ }
	16	+ $criteria_set[] = array($oCriterion, $dataset["data"]);
	17	+ } else if (!empty($sql)) {
	18	+ $criteria_set[] = $sql;
	19	+ } else {
	20	+ return PEAR::raiseError('Invalid criteria specified.');
	21	+ }
	22	+ }
	23	+ foreach ($criteria_set as $oCriterionPair) {
	24	+ $oCriterion = $oCriterionPair[0];
	25	+ $aReq = $oCriterionPair[1];
	26	+ if (is_object($oCriterion)) {
	27	+ $res = $oCriterion->searchSQL($aReq);
	28	+ if (!is_null($res)) {
	29	+ $aSQL[] = $res;
	30	+ }
	31	+ $res = $oCriterion->searchJoinSQL();
	32	+ if (!is_null($res)) {
	33	+ $aJoinSQL[] = $res;
	34	+ }
	35	+ } else {
	36	+ $aSQL[] = array($oCriterion, $aReq);
	37	+ }
	38	+ }
	39	+
	40	+ $aCritParams = array();
	41	+ $aCritQueries = array();
	42	+ foreach ($aSQL as $sSQL) {
	43	+ if (is_array($sSQL)) {
	44	+ $aCritQueries[] = '('.$sSQL[0].')';
	45	+ $aCritParams = array_merge($aCritParams , $sSQL[1]);
	46	+ } else {
	47	+ $aCritQueries[] = '('.$sSQL.')';
	48	+ }
	49	+ }
	50	+
	51	+ if (count($aCritQueries) == 0) {
	52	+ return PEAR::raiseError("No search criteria were specified");
	53	+ }
	54	+
	55	+ return array($aCritQueries, $aCritParams, $aJoinSQL);
	56	+ }
	57	+
	58	+ function criteriaSetToSQL($aCriteriaSet, $iRecurseLevel = 0) {
	59	+ $aJoinSQL = array();
	60	+ $aSearchStrings = array();
	61	+ $aParams = array();
	62	+ foreach ($aCriteriaSet["subgroup"] as $k => $aOneCriteriaSet) {
	63	+ $aValues = KTUtil::arrayGet($aOneCriteriaSet, "values");
	64	+ $aSubgroup = KTUtil::arrayGet($aOneCriteriaSet, "subgroup");
	65	+ if (!empty($aValues)) {
	66	+ list($aThisCritQueries, $aThisParams, $aThisJoinSQL) = KTSearchUtil::_oneCriteriaSetToSQL($aOneCriteriaSet["values"]);
	67	+ $aJoinSQL = array_merge($aJoinSQL, $aThisJoinSQL);
	68	+ $aParams = array_merge($aParams, $aThisParams);
	69	+ $tabs = str_repeat("\t", ($iRecurseLevel + 2));
	70	+ $aSearchStrings[] = "\n$tabs(\n$tabs\t" . join("\n " . KTUtil::arrayGet($aOneCriteriaSet, 'join', "AND") . " ", $aThisCritQueries) . "\n$tabs)";
	71	+ } else if (!empty($aSubgroup)) {
	72	+ list($sThisSearchString, $aThisParams, $sThisJoinSQL) =
	73	+ KTSearchUtil::criteriaSetToSQL($aOneCriteriaSet, $iRecurseLevel + 1);
	74	+ $aJoinSQL[] = $sThisJoinSQL;
	75	+ $aParams = array_merge($aParams, $aThisParams);
	76	+ $aSearchStrings[] = $sThisSearchString;
	77	+ }
	78	+ }
	79	+ $sJoinSQL = join(" ", $aJoinSQL);
	80	+ $tabs = str_repeat("\t", $iRecurseLevel + 1);
	81	+ $sSearchString = "\n$tabs(" . join("\n$tabs\t" . $aCriteriaSet['join'] . " ", $aSearchStrings) . "\n$tabs)";
	82	+ return array($sSearchString, $aParams, $sJoinSQL);
	83	+ }
	84	+
	85	+ function permissionToSQL($oUser, $sPermissionName) {
	86	+ $oPermission =& KTPermission::getByName('ktcore.permissions.read');
	87	+ $sPermissionLookupsTable = KTUtil::getTableName('permission_lookups');
	88	+ $sPermissionLookupAssignmentsTable = KTUtil::getTableName('permission_lookup_assignments');
	89	+ $sPermissionDescriptorsTable = KTUtil::getTableName('permission_descriptors');
	90	+ $sJoinSQL = "
	91	+ INNER JOIN $sPermissionLookupsTable AS PL ON D.permission_lookup_id = PL.id
	92	+ INNER JOIN $sPermissionLookupAssignmentsTable AS PLA ON PL.id = PLA.permission_lookup_id AND PLA.permission_id = ?
	93	+ ";
	94	+ $aGroups = GroupUtil::listGroupsForUserExpand($oUser);
	95	+ $aPermissionDescriptors = KTPermissionDescriptor::getByGroups($aGroups, array('ids' => true));
	96	+ $sPermissionDescriptors = DBUtil::paramArray($aPermissionDescriptors);
	97	+ $sSQLString = "PLA.permission_descriptor_id IN ($sPermissionDescriptors)";
	98	+ $aParams = array($oPermission->getId());
	99	+ $aParams = array_merge($aParams, $aPermissionDescriptors);
	100	+ return array($sSQLString, $aParams, $sJoinSQL);
	101	+ }
	102	+
	103	+ function criteriaToQuery($aCriteriaSet, $oUser, $sPermissionName) {
	104	+ global $default;
	105	+ list($sSQLSearchString, $aCritParams, $sJoinSQL) = KTSearchUtil::criteriaSetToSQL($aCriteriaSet);
	106	+
	107	+ $sToSearch = KTUtil::arrayGet($aOrigReq, 'fToSearch', 'Live'); // actually never present in this version.
	108	+
	109	+ list ($sPermissionString, $aPermissionParams, $sPermissionJoin) = KTSearchUtil::permissionToSQL($oUser, $sPermissionName);
	110	+ //$sQuery = DBUtil::compactQuery("
	111	+ $sQuery = ("
	112	+ SELECT
	113	+ F.name AS folder_name, F.id AS folder_id, D.id AS document_id,
	114	+ D.name AS document_name, D.filename AS file_name, COUNT(D.id) AS doc_count, 'View' AS view
	115	+ FROM
	116	+ $default->documents_table AS D
	117	+ INNER JOIN $default->folders_table AS F ON D.folder_id = F.id
	118	+ $sJoinSQL
	119	+ INNER JOIN $default->status_table AS SL on D.status_id=SL.id
	120	+ $sPermissionJoin
	121	+ WHERE
	122	+ $sPermissionString
	123	+ AND SL.name = ?
	124	+ AND ($sSQLSearchString)
	125	+ GROUP BY D.id
	126	+ ORDER BY doc_count DESC");
	127	+
	128	+ $aParams = array();
	129	+ $aParams = array_merge($aParams, $aPermissionParams);
	130	+ $aParams[] = $sToSearch;
	131	+ $aParams = array_merge($aParams, $aCritParams);
	132	+
	133	+ return array($sQuery, $aParams);
	134	+ }
	135	+}
	136	+
...	...