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ENHANCEMENT: allow custom columns in search, honour the classesToSearch, join all objects with base class, so we can query ClassName

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This commit is contained in:
Mateusz Uzdowski 2010-10-20 00:52:44 +00:00
parent e83c14236c
commit 058c29bf69
1 changed files with 28 additions and 5 deletions
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33
code/MSSQLDatabase.php
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@ -1251,8 +1251,10 @@ class MSSQLDatabase extends SS_Database {
/**
* The core search engine configuration.
* @todo There is no result relevancy or ordering as it currently stands.
* Picks up the fulltext-indexed tables from the database and executes search on all of them.
* Results are obtained as ID-ClassName pairs which is later used to reconstruct the DataObjectSet.
*
* @param array classesToSearch computes all descendants and includes them. Check is done via WHERE clause.
* @param string $keywords Keywords as a space separated string
* @return object DataObjectSet of result pages
*/
@ -1260,6 +1262,12 @@ class MSSQLDatabase extends SS_Database {
$results = new DataObjectSet();
if(!$this->fullTextEnabled()) return $results;
if (substr($sortBy, 0, 9)!='Relevance') user_error("Non-relevance sort not supported.", E_USER_ERROR);
$allClassesToSearch = array();
foreach ($classesToSearch as $class) {
$allClassesToSearch = array_merge($allClassesToSearch, ClassInfo::dataClassesFor($class));
}
$allClassesToSearch = array_unique($allClassesToSearch);
//Get a list of all the tables and columns we'll be searching on:
$fulltextColumns = DB::query('EXEC sp_help_fulltext_columns');
@ -1277,8 +1285,10 @@ class MSSQLDatabase extends SS_Database {
else array_push($table, $column['FULLTEXT_COLUMN_NAME']);
}
// Create one query per each table, columns not used.
// Create one query per each table, $columns not used. We want just the ID and the ClassName of the object from this query.
foreach($tables as $tableName=>$columns){
$baseClass = ClassInfo::baseDataClass($tableName);
$join = $this->fullTextSearchMSSQL($tableName, $keywords);
if (!$join) return new DataObjectSet(); // avoid "Null or empty full-text predicate"
@ -1288,11 +1298,24 @@ class MSSQLDatabase extends SS_Database {
$where = array("\"$tableName\".\"ShowInSearch\"!=0");
}
// Join with CONTAINSTABLE, a full text searcher that includes relevance factor
$queries[$tableName] = singleton($tableName)->extendedSQL($where);
$queries[$tableName]->from = array("\"$tableName\" INNER JOIN $join AS \"ft\" ON \"$tableName\".\"ID\"=\"ft\".\"KEY\"");
$queries[$tableName]->select = array("\"$tableName\".\"ID\"", "'$tableName' AS Source", "\"Rank\" AS \"Relevance\"");
$queries[$tableName]->orderby = null;
// Join with CONTAINSTABLE, a full text searcher that includes relevance factor
$queries[$tableName]->from = array("\"$tableName\" INNER JOIN $join AS \"ft\" ON \"$tableName\".\"ID\"=\"ft\".\"KEY\"");
// Join with the base class if needed, as we want to test agains the ClassName
if ($tableName!=$baseClass) {
$queries[$tableName]->from[] = "INNER JOIN \"$baseClass\" ON \"$baseClass\".\"ID\"=\"$tableName\".\"ID\"";
}
$queries[$tableName]->select = array("\"$tableName\".\"ID\"", "'$tableName' AS Source", "\"Rank\" AS \"Relevance\"");
if ($extraFilter) {
$queries[$tableName]->where[] = $extraFilter;
}
if (count($allClassesToSearch)) {
$queries[$tableName]->where[] = "\"$baseClass\".\"ClassName\" IN ('".implode($allClassesToSearch, "', '")."')";
}
// Reset the parameters that would get in the way
}
// Generate SQL