/**
* Imports information for a table.
*
* @param array $tableInfo
*/
function Piece_ORM_Metadata($tableInfo)
{
$this->_tableName = $tableInfo[0]['table'];
foreach ($tableInfo as $fieldInfo) {
$this->_tableInfo[$fieldInfo['name']] = $fieldInfo;
$this->_aliases[strtolower(Piece_ORM_Inflector::camelize($fieldInfo['name']))] = $fieldInfo['name'];
if (strpos($fieldInfo['flags'], 'primary_key') !== false) {
$this->_primaryKey[] = $fieldInfo['name'];
}
}
if (count($this->_primaryKey) == 1) {
if ($this->isAutoIncrement($this->_primaryKey[0])) {
$this->_hasID = true;
}
}
}
/**
* Creates an object from the metadata.
*
* @return stdClass
*/
function &createObject()
{
$object =& new stdClass();
foreach ($this->_metadata->getFieldNames() as $fieldName) {
$object->{Piece_ORM_Inflector::camelize($fieldName, true)} = null;
}
return $object;
}
/**
* Creates a mapper object for a given mapper name.
*
* @param string $mapperName
* @return Piece_ORM_Mapper_Common
* @throws PIECE_ORM_ERROR_INVALID_MAPPER
*/
function &factory($mapperName)
{
$context =& Piece_ORM_Context::singleton();
if (!$context->getUseMapperNameAsTableName()) {
$mapperName = Piece_ORM_Inflector::camelize($mapperName);
}
$mapperID = sha1($context->getDSN() . ".{$mapperName}." . realpath($GLOBALS['PIECE_ORM_Mapper_ConfigDirectory']));
if (!array_key_exists($mapperID, $GLOBALS['PIECE_ORM_Mapper_Instances'])) {
Piece_ORM_Mapper_Factory::_load($mapperID, $mapperName);
if (Piece_ORM_Error::hasErrors()) {
$return = null;
return $return;
}
$metadata =& Piece_ORM_Metadata_Factory::factory($mapperName);
if (Piece_ORM_Error::hasErrors()) {
$return = null;
return $return;
}
$mapperClass = Piece_ORM_Mapper_Factory::_getMapperClass($mapperID);
$mapper =& new $mapperClass($metadata);
if (!is_subclass_of($mapper, 'Piece_ORM_Mapper_Common')) {
Piece_ORM_Error::push(PIECE_ORM_ERROR_INVALID_MAPPER, "The mapper class for [ {$mapperName} ] is invalid.");
$return = null;
return $return;
}
$GLOBALS['PIECE_ORM_Mapper_Instances'][$mapperID] =& $mapper;
}
$dbh =& $context->getConnection();
if (Piece_ORM_Error::hasErrors()) {
$return = null;
return $return;
}
$GLOBALS['PIECE_ORM_Mapper_Instances'][$mapperID]->setConnection($dbh);
return $GLOBALS['PIECE_ORM_Mapper_Instances'][$mapperID];
}
/**
* Generates the default UPDATE query.
*
* @return string
* @since Method available since Release 0.6.0
*/
function _generateDefaultUpdateQuery()
{
if ($this->_metadata->hasPrimaryKey()) {
$primaryKeys = $this->_metadata->getPrimaryKeys();
$fieldName = array_shift($primaryKeys);
$whereClause = "{$fieldName} = \$" . Piece_ORM_Inflector::camelize($fieldName, true);
foreach ($primaryKeys as $partOfPrimeryKey) {
$whereClause .= " AND {$partOfPrimeryKey} = \$" . Piece_ORM_Inflector::camelize($partOfPrimeryKey, true);
}
if ($this->_metadata->getDatatype('lock_version') == 'integer') {
$whereClause .= " AND lock_version = " . $this->generateExpression('lock_version');
}
$fields = array();
foreach ($this->_metadata->getFieldNames() as $fieldName) {
if (!$this->_metadata->isAutoIncrement($fieldName)) {
if (!$this->_metadata->isPartOfPrimaryKey($fieldName)) {
if (!($fieldName == 'lock_version' && $this->_metadata->getDatatype('lock_version') == 'integer')) {
$fields[] = "{$fieldName} = " . $this->generateExpression($fieldName);
} else {
$fields[] = "{$fieldName} = {$fieldName} + 1";
}
}
}
}
return 'UPDATE $__table SET ' . implode(", ", $fields) . " WHERE {$whereClause}";
} else {
return null;
}
}
/**
* Returns whether an object has valid values for primary keys.
*
* @return boolean
*/
function _validatePrimaryValues()
{
foreach ($this->_metadata->getPrimaryKeys() as $primaryKey) {
$primaryKeyProperty = Piece_ORM_Inflector::camelize($primaryKey, true);
if (!array_key_exists($primaryKeyProperty, $this->_subject)) {
continue;
}
if (!is_scalar($this->_subject->{$primaryKeyProperty})) {
return false;
}
if (!strlen($this->_subject->{$primaryKeyProperty})) {
return false;
}
}
return true;
}
/**
* Loads all associated objects into appropriate objects.
*
* @param Piece_ORM_Mapper_Common &$mapper
* @param integer $relationshipIndex
*/
function loadAll(&$mapper, $relationshipIndex)
{
$mapper->setPreloadCallback($this->_getPreloadCallback());
$mapper->setPreloadCallbackArgs(array($relationshipIndex));
$associatedObjects = $mapper->findAllWithQuery($this->_buildQuery($relationshipIndex) . (is_null($this->_relationships[$relationshipIndex]['orderBy']) ? '' : " ORDER BY {$this->_relationships[$relationshipIndex]['orderBy']}"));
$mapper->setPreloadCallback(null);
$mapper->setPreloadCallbackArgs(null);
if (Piece_ORM_Error::hasErrors()) {
return;
}
$relationshipKeyPropertyName = Piece_ORM_Inflector::camelize($this->_getRelationshipKeyFieldNameInSecondaryQuery($this->_relationships[$relationshipIndex]), true);
for ($j = 0, $count = count($associatedObjects); $j < $count; ++$j) {
$this->_associateObject($associatedObjects[$j], $mapper, $relationshipKeyPropertyName, $relationshipIndex);
}
}
/**
* Loads an object with a row.
*
* @param array $row
* @return stdClass
*/
function &_load($row)
{
if (is_null($row)) {
return $row;
}
$object =& new stdClass();
foreach ($row as $fieldName => $value) {
if (!$this->_metadata->isLOB($fieldName)) {
$object->{Piece_ORM_Inflector::camelize($fieldName, true)} = $value;
} elseif (is_null($value)) {
$object->{Piece_ORM_Inflector::camelize($fieldName, true)} = null;
} else {
$lob =& $this->_mapper->createLOB();
$lob->setFieldName($fieldName);
$lob->setValue($value);
$object->{Piece_ORM_Inflector::camelize($fieldName, true)} =& $lob;
}
}
return $object;
}
/**
* Updates associated objects in a table.
*
* @param array $relationship
*/
function update($relationship)
{
if (!array_key_exists($relationship['mappedAs'], $this->_subject)) {
return;
}
if (!is_null($this->_subject->{$relationship}['mappedAs']) && !is_object($this->_subject->{$relationship}['mappedAs'])) {
return;
}
$mapper =& Piece_ORM_Mapper_Factory::factory($relationship['table']);
if (Piece_ORM_Error::hasErrors()) {
return;
}
$referencedColumnValue = $this->_subject->{Piece_ORM_Inflector::camelize($relationship['referencedColumn'], true)};
$oldObject = $mapper->findWithQuery("SELECT * FROM {$relationship['table']} WHERE {$relationship['column']} = " . $mapper->quote($referencedColumnValue, $relationship['column']));
if (Piece_ORM_Error::hasErrors()) {
return;
}
if (is_null($oldObject)) {
if (!is_null($this->_subject->{$relationship}['mappedAs'])) {
$this->_subject->{$relationship}['mappedAs']->{Piece_ORM_Inflector::camelize($relationship['column'], true)} = $referencedColumnValue;
$mapper->insert($this->_subject->{$relationship}['mappedAs']);
}
} else {
if (!is_null($this->_subject->{$relationship}['mappedAs'])) {
$mapper->update($this->_subject->{$relationship}['mappedAs']);
} else {
$mapper->delete($oldObject);
}
}
}
/**
* Removes associated objects from a table.
*
* @param array $relationship
*/
function delete($relationship)
{
$property = Piece_ORM_Inflector::camelize($relationship['through']['referencedColumn'], true);
if (!array_key_exists($property, $this->_subject)) {
return;
}
$mapper =& Piece_ORM_Mapper_Factory::factory($relationship['through']['table']);
if (Piece_ORM_Error::hasErrors()) {
return;
}
$mapper->executeQuery("DELETE FROM {$relationship['through']['table']} WHERE {$relationship['through']['column']} = " . $mapper->quote($this->_subject->{$property}, $relationship['through']['column']), true);
}
/**
* Associates an object which are loaded by the secondary query into
* objects which are loaded by the primary query.
*
* @param stdClass &$associatedObject
* @param Piece_ORM_Mapper_Common &$mapper
* @param string $relationshipKeyPropertyName
* @param integer $relationshipIndex
*/
function _associateObject(&$associatedObject, &$mapper, $relationshipKeyPropertyName, $relationshipIndex)
{
$metadata =& $mapper->getMetadata();
$primaryKey = Piece_ORM_Inflector::camelize($metadata->getPrimaryKey(), true);
for ($j = 0, $count = count($this->_associations[$relationshipIndex][$associatedObject->{$primaryKey}]); $j < $count; ++$j) {
$this->_objects[$this->_objectIndexes[$relationshipIndex][$this->_associations[$relationshipIndex][$associatedObject->{$primaryKey}][$j]]]->{$this->_relationships[$relationshipIndex]['mappedAs']}[] =& $associatedObject;
}
}