/**
* Returns an array of objects queried from the given t41_Object_Collection instance parameters
*
* The given collection is populated if it comes empty of members.
*
* In any other case, this method doesn't directly populate the collection. This action is under the responsability of
* the caller. For example, the t41_Object_Collection::find() method takes care of it.
*
* @param t41\ObjectModel\Collection $collection
* @param boolean|array $returnCount true = counting, array = stats on listed properties
* @param string $subOp complex operation like SUM or AVG
* @return array
*/
public function find(ObjectModel\Collection $collection, $returnCount = false, $subOp = null)
{
$this->_class = $class = $collection->getDataObject()->getClass();
$table = $this->_getTableFromClass($class);
if (!$table) {
throw new Exception('MISSING_DBTABLE_PARAM');
}
// primary key is either part of the mapper configuration or 'id'
$pkey = $this->_mapper ? $this->_mapper->getPrimaryKey($class) : \t41\Backend::DEFAULT_PKEY;
if (is_array($pkey)) {
$composite = array();
/* @var $obj t41\Backend\Key */
foreach ($pkey as $obj) {
$composite[] = sprintf('TRIM(%s)', $table . '.' . $obj->getName());
$composite[] = Backend\Mapper::VALUES_SEPARATOR;
}
$pkey = sprintf("CONCAT(%s) AS %s", implode(',', $composite), Backend::DEFAULT_PKEY);
} else {
$pkey = $table . '.' . $pkey;
}
$this->_connect();
/* @var $select \Zend_Db_Select */
$this->_select = $this->_ressource->select();
// detect if query is of stat-kind
if ($returnCount) {
switch ($subOp) {
case ObjectModel::CALC_SUM:
$expressions = array();
foreach ($returnCount as $propKey => $property) {
$prop = $this->_mapper ? $this->_mapper->propertyToDatastoreName($class, $propKey) : $propKey;
$expressions[] = sprintf('SUM(%s.%s)', $table, $prop);
}
$subOpExpr = implode('+', $expressions);
break;
case ObjectModel::CALC_AVG:
$subOpExpr = sprintf('AVG(%s)', $returnCount);
break;
default:
$subOpExpr = 'COUNT(*)';
break;
}
$this->_select->from($table, new \Zend_Db_Expr($subOpExpr . " AS " . \t41\Backend::MAX_ROWS_IDENTIFIER));
} else {
$this->_select->distinct();
$this->_select->from($table, $pkey);
}
$this->_alreadyJoined = array();
/* @var $condition t41\Backend\Condition */
foreach ($collection->getConditions() as $conditionArray) {
// combo conditions
if ($conditionArray[0] instanceof Condition\Combo) {
$statement = array();
foreach ($conditionArray[0]->getConditions() as $condition) {
$statement[] = $this->_parseCondition($condition[0], $this->_select, $table);
}
$statement = implode(' OR ', $statement);
switch ($conditionArray[1]) {
case Condition::MODE_OR:
$this->_select->orWhere($statement);
break;
case Condition::MODE_AND:
default:
$this->_select->where($statement);
break;
}
continue;
}
// optional table where the column may be
$jtable = '';
// condition object is in the first key
$condition = $conditionArray[0];
/* does condition contain another condition object ? */
if ($condition->isRecursive()) {
while ($condition->isRecursive()) {
$property = $condition->getProperty();
$parent = $property->getParent() ? $property->getParent()->getId() : $table;
$condition = $condition->getCondition();
if ($jtable) {
$parentTable = $jtable;
} else {
if ($parent) {
$parentTable = $this->_mapper ? $this->_mapper->getDatastore($parent) : $parent;
} else {
$parentTable = $table;
}
}
$jtable = $this->_mapper ? $this->_mapper->getDatastore($property->getParameter('instanceof')) : $this->_getTableFromClass($property->getParameter('instanceof'));
/* column name in left table */
$jlkey = $this->_mapper ? $this->_mapper->propertyToDatastoreName($class, $property->getId()) : $property->getId();
$uniqext = $jtable . '__joined_for__' . $jlkey;
if (in_array($uniqext, $this->_alreadyJoined)) {
$class = $property->getParameter('instanceof');
$jtable = $uniqext;
continue;
}
/* pkey name in joined table */
$jpkey = $this->_mapper ? $this->_mapper->getPrimaryKey($property->getParameter('instanceof')) : Backend::DEFAULT_PKEY;
$join = sprintf("%s.%s = %s.%s", $parentTable, $jlkey, $uniqext, $jpkey);
$this->_select->joinLeft($jtable . " AS {$uniqext}", $join, array());
$this->_alreadyJoined[$jtable] = $uniqext;
//$jtable;
$jtable = $uniqext;
$class = $property->getParameter('instanceof');
}
}
$property = $condition->getProperty();
if ($property instanceof Property\ObjectProperty) {
// no join if object is stored in a different backend !
// @todo improve this part
if (ObjectModel::getObjectBackend($property->getParameter('instanceof'))->getAlias() != $this->_uri->getAlias()) {
$clauses = $condition->getClauses();
if ($clauses[0]['value'] != Condition::NO_VALUE) {
$clauses[0]['operator'] = Condition::OPERATOR_ENDSWITH | Condition::OPERATOR_EQUAL;
$condition->setClauses($clauses);
}
$field = $this->_mapper ? $this->_mapper->propertyToDatastoreName($this->_class, $property->getId()) : $property->getId();
} else {
// which table to join with ? (in case of condition is last element of a recursion)
$jtable2 = $jtable ? $jtable : $table;
$jtable = $this->_mapper ? $this->_mapper->getDatastore($property->getParameter('instanceof')) : $this->_getTableFromClass($property->getParameter('instanceof'));
$leftkey = $this->_mapper ? $this->_mapper->propertyToDatastoreName($class, $property->getId()) : $property->getId();
$field = $rightkey = $this->_mapper ? $this->_mapper->getPrimaryKey($property->getParameter('instanceof')) : Backend::DEFAULT_PKEY;
$uniqext = $jtable . '__joined_for__' . $leftkey;
if (!in_array($uniqext, $this->_alreadyJoined)) {
$join = sprintf("%s.%s = %s.%s", $jtable2, $leftkey, $uniqext, is_array($rightkey) ? $rightkey[0] : $rightkey);
$this->_select->joinLeft($jtable . " AS {$uniqext}", $join, array());
$this->_alreadyJoined[$jtable] = $uniqext;
}
$jtable = $uniqext;
}
} else {
if ($property instanceof Property\CollectionProperty) {
// handling of conditions based on collection limited to withMembers() and withoutMembers()
$leftkey = $property->getParameter('keyprop');
$field = $property->getId();
$subSelect = $this->_ressource->select();
$subseltbl = $this->_mapper ? $this->_mapper->getDatastore($property->getParameter('instanceof')) : $this->_getTableFromClass($property->getParameter('instanceof'));
$subSelect->from($subseltbl, new \Zend_Db_Expr(sprintf("COUNT(%s)", $leftkey)));
$join = sprintf("%s.%s = %s", $subseltbl, $leftkey, $pkey);
$subSelect->where($join);
$statement = $this->_buildConditionStatement(new \Zend_Db_Expr(sprintf("(%s)", $subSelect)), $condition->getClauses(), $conditionArray[1]);
$this->_select->where($statement);
continue;
} else {
$field = $property->getId();
if ($this->_mapper) {
$field = $this->_mapper->propertyToDatastoreName($class, $field);
}
}
}
/* convert identifier tag to the valid primary key */
if ($field == ObjectUri::IDENTIFIER) {
// @todo handle multiple keys from mapper
$field = $table . '.';
$key = $this->_mapper ? $this->_mapper->getPrimaryKey($class) : Backend::DEFAULT_PKEY;
$field .= is_array($key) ? $key[0] : $key;
} else {
if ($jtable) {
if (array_key_exists($jtable, $this->_alreadyJoined)) {
$field = $this->_alreadyJoined[$jtable] . '.' . $field;
} else {
$tmp = $jtable . '.';
$tmp .= is_array($field) ? $field[0] : $field;
$field = $tmp;
}
} else {
if (array_key_exists($table, $this->_alreadyJoined)) {
$field = $this->_alreadyJoined[$table] . '.' . $field;
} else {
$field = $table . '.' . $field;
}
}
}
if ($field instanceof Key) {
$field = $table . '.' . $field->getName();
}
// protect DateProperty() with setted timepart parameter from misuse
if ($property instanceof DateProperty && $property->getParameter('timepart') == true) {
$field = "DATE({$field})";
}
$statement = $this->_buildConditionStatement($field, $condition->getClauses(), $conditionArray[1]);
switch ($conditionArray[1]) {
case Condition::MODE_OR:
$this->_select->orWhere($statement);
break;
case Condition::MODE_AND:
default:
$this->_select->where($statement);
break;
}
}
// Adjust query based on returnCount
if ($returnCount) {
if (is_array($returnCount)) {
if ($subOp) {
} else {
// return count on grouped columns
foreach ($returnCount as $key => $property) {
$fieldmodifier = null;
if ($this->_mapper) {
$class = $property->getParent() ? $property->getParent()->getId() : $collection->getDataObject()->getClass();
$field = $this->_mapper->propertyToDatastoreName($class, $property->getId());
} else {
$field = $property->getId();
}
if ($property instanceof ObjectProperty) {
// join with $key if necessary
if (strstr($key, '.') !== false) {
$leftPart = substr($key, 0, strpos($key, '.'));
$intermediateProp = $collection->getDataObject()->getProperty($leftPart);
$fieldmodifier = $this->_join($intermediateProp, $table) . '.' . $field;
}
}
// limit date grouping to date part, omitting possible hour part
if ($property instanceof DateProperty) {
$fieldmodifier = "DATE({$field})";
}
$this->_select->group($fieldmodifier ? $fieldmodifier : $field);
$this->_select->columns(array($field => $fieldmodifier ? $fieldmodifier : $field));
}
}
} else {
$this->_select->reset('group');
}
} else {
$this->_select->limit($collection->getBoundaryBatch() != -1 ? $collection->getBoundaryBatch() : null, $collection->getBoundaryOffset());
/**
* Sorting part
*/
foreach ($collection->getSortings() as $sorting) {
$slUniqext = $slTable = null;
// Specific cases first
// @todo find a better way to sort on meta properties
if ($sorting[0]->getId() == ObjectUri::IDENTIFIER || $sorting[0] instanceof MetaProperty) {
$id = Backend::DEFAULT_PKEY;
$this->_select->order(new \Zend_Db_Expr($table . '.' . $id . ' ' . $sorting[1]));
continue;
} else {
if ($sorting[0] instanceof Property\CollectionProperty) {
// handling of conditions based on collection limited to withMembers() and withoutMembers()
$leftkey = $sorting[0]->getParameter('keyprop');
//$field = $property->getId();
$subSelect = $this->_ressource->select();
$subseltbl = $this->_mapper ? $this->_mapper->getDatastore($sorting[0]->getParameter('instanceof')) : $this->_getTableFromClass($sorting[0]->getParameter('instanceof'));
$subSelect->from($subseltbl, new \Zend_Db_Expr(sprintf("COUNT(%s)", $leftkey)));
$join = sprintf("%s.%s = %s", $subseltbl, $leftkey, $pkey);
$subSelect->where($join);
// $statement = $this->_buildConditionStatement(new \Zend_Db_Expr(sprintf("(%s)", $subSelect)), $condition->getClauses(), $conditionArray[1]);
$this->_select->order(new \Zend_Db_Expr('(' . $subSelect->__toString() . ') ' . $sorting[1]));
continue;
} else {
if ($sorting[0] instanceof Property\ObjectProperty) {
// find which property to sort by
if ($sorting[0]->getParameter('sorting')) {
$sprops = array_keys($sorting[0]->getParameter('sorting'));
} else {
// try to sort with properties used to display value
if (substr($sorting[0]->getParameter('display'), 0, 1) == '[') {
// @todo extract elements of pattern to order from them ?
$sprops = array('id');
} else {
$sprops = explode(',', $sorting[0]->getParameter('display'));
}
}
// sorting property belongs to a second-level join
if ($sorting[0]->getParent()->getClass() != $collection->getClass()) {
$leftkey = 'commande';
//$this->_mapper ? $this->_mapper->propertyToDatastoreName($collection->getDataObject()->getClass(), $sorting[0]->getParent()getId()) : $sorting[0]->getId();
$class = $sorting[0]->getParent()->getClass();
$stable = $this->_getTableFromClass($class);
$sbackend = ObjectModel::getObjectBackend($class);
// Property to sort from is in a different backend from current one
if ($sbackend->getAlias() != $this->getAlias()) {
// We presume that the current backend is allowed to connect to the remote one
// Should we raise an exception instead ?
$stable = $sbackend->getUri()->getDatabase() . '.' . $stable;
}
$field = $sorting[0]->getId();
$rightkey = $this->_mapper ? $this->_mapper->getPrimaryKey($class) : Backend::DEFAULT_PKEY;
$uniqext = $stable . '__joined_for__' . $leftkey;
if (!in_array($uniqext, $this->_alreadyJoined)) {
if (is_array($rightkey)) {
foreach ($rightkey as $rightkeyObj) {
$join = sprintf("%s.%s = %s.%s", $table, $leftkey, $uniqext, $rightkeyObj->getName());
}
} else {
$join = sprintf("%s.%s = %s.%s", $table, $leftkey, $uniqext, $rightkey);
}
$this->_select->joinLeft("{$stable} AS {$uniqext}", $join, array());
$this->_alreadyJoined[$stable] = $uniqext;
}
$slTable = $this->_getTableFromClass($sorting[0]->getParameter('instanceof'));
$slUniqext = $uniqext;
}
$leftkey = $this->_mapper ? $this->_mapper->propertyToDatastoreName($collection->getDataObject()->getClass(), $sorting[0]->getId()) : $sorting[0]->getId();
$class = $sorting[0]->getParameter('instanceof');
$stable = isset($slTable) ? $slTable : $this->_getTableFromClass($class);
$sbackend = ObjectModel::getObjectBackend($class);
// Property to sort from is in a different backend from current one
if ($sbackend->getAlias() != $this->getAlias()) {
// We presume that the current backend is allowed to connect to the remote one
// Should we raise an exception instead ?
$stable = $sbackend->getUri()->getDatabase() . '.' . $stable;
}
$field = $sorting[0]->getId();
$rightkey = $this->_mapper ? $this->_mapper->getPrimaryKey($class) : Backend::DEFAULT_PKEY;
$uniqext = $stable . '__joined_for__' . $leftkey;
if (!in_array($uniqext, $this->_alreadyJoined)) {
if (is_array($rightkey)) {
foreach ($rightkey as $rightkeyObj) {
$join = sprintf("%s.%s = %s.%s", $table, $leftkey, $uniqext, $rightkeyObj->getName());
}
} else {
$join = sprintf("%s.%s = %s.%s", isset($slUniqext) ? $slUniqext : $table, $leftkey, $uniqext, $rightkey);
}
$this->_select->joinLeft("{$stable} AS {$uniqext}", $join, array());
$this->_alreadyJoined[$stable] = $uniqext;
}
foreach ($sprops as $sprop) {
if ($this->_mapper) {
$sfield = $this->_mapper->propertyToDatastoreName($class, $sprop);
} else {
$sfield = $sprop;
}
$sortingExpr = $this->_alreadyJoined[$stable] . '.' . $sfield;
if (isset($sorting[2]) && !empty($sorting[2])) {
$sortingExpr = sprintf('%s(%s)', $sorting[2], $sortingExpr);
}
$this->_select->order(new \Zend_Db_Expr($sortingExpr . ' ' . $sorting[1]));
}
continue;
}
}
}
// default sorting on a different table
$class = $sorting[0]->getParent() ? $sorting[0]->getParent()->getClass() : $collection->getDataObject()->getClass();
$stable = $this->_getTableFromClass($class);
if ($this->_mapper) {
$sfield = $this->_mapper->propertyToDatastoreName($class, $sorting[0]->getId());
} else {
$field = $sorting[0];
$sfield = $field->getId();
}
// add a left join if the sorting field belongs to a table not yet part of the query
if ($stable != $table) {
// get the property id from the class name
$tfield = isset($sorting[3]) ? $sorting[3] : $collection->getDataObject()->getObjectPropertyId($class);
$leftkey = $this->_mapper ? $this->_mapper->propertyToDatastoreName($class, $tfield) : $tfield;
$rightkey = $this->_mapper ? $this->_mapper->getPrimaryKey($field->getParameter('instanceof')) : Backend::DEFAULT_PKEY;
$uniqext = $stable . '__joined_for__' . $leftkey;
if (!in_array($uniqext, $this->_alreadyJoined)) {
$join = sprintf("%s.%s = %s.%s", $table, $leftkey, $uniqext, $rightkey);
$this->_select->joinLeft("{$stable} AS {$uniqext}", $join, array());
$this->_alreadyJoined[$stable] = $uniqext;
}
$sortingExpr = $this->_alreadyJoined[$stable] . '.' . $sfield;
} else {
$sortingExpr = $stable . '.' . $sfield;
}
if (isset($sorting[2]) && !empty($sorting[2])) {
$sortingExpr = sprintf('%s(%s)', $sorting[2], $sortingExpr);
}
$this->_select->order(new \Zend_Db_Expr('TRIM(' . $sortingExpr . ') ' . $sorting[1]));
}
}
$result = array();
$context = array('table' => $table);
try {
if (true && $returnCount == false) {
$this->_select->columns($this->_getColumns($collection->getDataObject()));
}
$result = $this->_ressource->fetchAll($this->_select);
} catch (\Zend_Db_Exception $e) {
$context['error'] = $e->getMessage();
$this->_setLastQuery($this->_select->__toString(), $this->_select->getPart('where'), $context);
return false;
}
$this->_setLastQuery($this->_select->__toString(), $this->_select->getPart('where'), $context);
if ($returnCount !== false) {
return is_array($returnCount) ? $result : $result[0][Backend::MAX_ROWS_IDENTIFIER];
}
// convert array of primary keys to strings
foreach ($result as $key => $val) {
// $result[$key] = implode(Backend\Mapper::VALUES_SEPARATOR, $val);
}
/* prepare base of object uri */
$uri = new ObjectModel\ObjectUri();
$uri->setBackendUri($this->_uri);
$uri->setClass($collection->getDataObject()->getClass());
$uri->setUrl($this->_database . '/' . $table . '/');
return $collection->populate($result, $uri);
//return $this->_populateCollection($result, $collection, $uri);
}
