Filtering from multiple object ID - sql

Question

I'm trying to filter an eZPublish fetch.
I've got a class which has an object relationS attribute. My filter allows to fetch objects of this class filtered by the object relations attribute.
I've started using the Enhanced Object Relations Filtering extension (http://projects.ez.no/index.php/enhanced_object_relation_filter), but this one only works with "AND" conditions and I want "OR".
I was able to edit the file to add the "OR" logic and this is what I got:
<?php
class EORExtendedFilter
{
function CreateSqlParts( $params )
{
$db =& eZDB::instance();
$tables = array();
$joins = array();
// foreach filtered attribute, we add a join the relation table and filter
// on the attribute ID + object ID
foreach( $params as $param )
{
if ( !is_array( $param ) )
continue;
if ( !is_numeric( $param[0] ) )
{
$classAttributeId = eZContentObjectTreeNode::classAttributeIDByIdentifier( $param[0] );
}
else
{
$classAttributeId = $param[0];
}
// multiple objects ids
if ( is_array($param[1]) )
{
foreach( $param[1] as $objectId )
{
$join = array(); // 'OR' logic
if ( is_numeric( $objectId ) )
{
$tableName = 'eor_link_' . $objectId;
$tables[] = 'ezcontentobject_link ' . $tableName;
$join[] = $tableName . '.from_contentobject_id = ezcontentobject.id';
$join[] = $tableName . '.from_contentobject_version = ezcontentobject.current_version';
$join[] = $tableName . '.contentclassattribute_id = ' . $classAttributeId;
$join[] = $tableName . '.to_contentobject_id = ' . $objectId;
}
// 'OR' logic
$joins[] = $join;
}
}
// single object id
else
{
$objectId = $param[1];
$tableName = 'eor_link_' . $objectId;
$tables[] = 'ezcontentobject_link ' . $tableName;
$joins[] = $tableName . '.from_contentobject_id = ezcontentobject.id';
$joins[] = $tableName . '.from_contentobject_version = ezcontentobject.current_version';
$joins[] = $tableName . '.contentclassattribute_id = ' . $classAttributeId;
$joins[] = $tableName . '.to_contentobject_id = ' . $objectId;
}
}
if ( !count( $tables ) or !count( $joins ) )
{
$tables = $joins = '';
}
else
{
$tables = "\n, " . implode( "\n, ", $tables );
// 'OR' logic
if ( is_array($param[1]) )
{
$andClauses = array();
foreach ($joins as $attr)
{
$andClauses[] = implode( " AND\n ", $attr );
}
$joins = implode( " OR\n ", $andClauses ) . " AND\n ";
}
else
{
$joins = implode( " AND\n ", $joins ) . " AND\n ";
}
}
return array( 'tables' => $tables, 'joins' => $joins );
}
}
This extended attribute filter produces this string :
eor_link_126.from_contentobject_id = ezcontentobject.id AND eor_link_126.from_contentobject_version = ezcontentobject.current_version AND eor_link_126.contentclassattribute_id = 537 AND eor_link_126.to_contentobject_id = 126 OR (eor_link_127.from_contentobject_id = ezcontentobject.id AND eor_link_127.from_contentobject_version = ezcontentobject.current_version AND eor_link_127.contentclassattribute_id = 537 AND eor_link_127.to_contentobject_id = 127 AND
I know it misses some parenthesis so I edited the string to test it directly in phpMyAdmin. This is the query:
SELECT DISTINCT
ezcontentobject.*,
ezcontentobject_tree.*,
ezcontentclass.serialized_name_list as class_serialized_name_list,
ezcontentclass.identifier as class_identifier,
ezcontentclass.is_container as is_container
, ezcontentobject_name.name as name, ezcontentobject_name.real_translation
, a0.sort_key_int
FROM
ezcontentobject_tree,
ezcontentobject,ezcontentclass
, ezcontentobject_name
, ezcontentobject_attribute a0
, ezcontentobject_link eor_link_126
, ezcontentobject_link eor_link_127
WHERE
ezcontentobject_tree.parent_node_id = 1443 and
((eor_link_126.from_contentobject_id = ezcontentobject.id AND
eor_link_126.from_contentobject_version = ezcontentobject.current_version AND
eor_link_126.contentclassattribute_id = 537 AND
eor_link_126.to_contentobject_id = 126) OR
(eor_link_127.from_contentobject_id = ezcontentobject.id AND
eor_link_127.from_contentobject_version = ezcontentobject.current_version AND
eor_link_127.contentclassattribute_id = 537 AND
eor_link_127.to_contentobject_id = 127)) AND
a0.contentobject_id = ezcontentobject.id AND
a0.contentclassattribute_id = 191 AND
a0.version = ezcontentobject_name.content_version AND
( a0.language_id & ezcontentobject.language_mask > 0 AND
( ( ezcontentobject.language_mask - ( ezcontentobject.language_mask & a0.language_id ) ) & 1 )
+ ( ( ( ezcontentobject.language_mask - ( ezcontentobject.language_mask & a0.language_id ) ) & 2 ) )
<
( a0.language_id & 1 )
+ ( ( a0.language_id & 2 ) )
)
AND
ezcontentclass.version=0 AND
ezcontentobject_tree.contentobject_id = ezcontentobject.id AND
ezcontentclass.id = ezcontentobject.contentclass_id AND
ezcontentobject.contentclass_id IN ( 17 ) AND
ezcontentobject_tree.contentobject_id = ezcontentobject_name.contentobject_id and
ezcontentobject_tree.contentobject_version = ezcontentobject_name.content_version and
( ezcontentobject_name.language_id & ezcontentobject.language_mask > 0 AND
( ( ezcontentobject.language_mask - ( ezcontentobject.language_mask & ezcontentobject_name.language_id ) ) & 1 )
+ ( ( ( ezcontentobject.language_mask - ( ezcontentobject.language_mask & ezcontentobject_name.language_id ) ) & 2 ) )
<
( ezcontentobject_name.language_id & 1 )
+ ( ( ezcontentobject_name.language_id & 2 ) )
)
AND ezcontentobject_tree.is_invisible = 0
AND
ezcontentobject.language_mask & 3 > 0
ORDER BY a0.sort_key_int DESC
LIMIT 0, 10
The thing is, when I execute the query above, nothing is returned because the query never stops. The CPU hits 100% and I have to restart mysql which means it's not a syntax issue.
Here is the explain of the query :
If anyone has any clue about this it will be very helpful.

Answer 1

I've solved it by rewriting everything using eZPersistentObject::fetchObjectList().