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Merge pull request #462 from doctrine/DDC-2055

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[DDC-2055] Generate SELECT clause from ResultSetMappingBuilder
This commit is contained in:
Benjamin Eberlei 2012-10-05 09:46:37 -07:00
commit a0440b63bb
2 changed files with 234 additions and 19 deletions
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184
lib/Doctrine/ORM/Query/ResultSetMappingBuilder.php
View File

@ -30,6 +30,39 @@ use Doctrine\ORM\Mapping\ClassMetadataInfo;
*/
class ResultSetMappingBuilder extends ResultSetMapping
{
/**
* Picking this rename mode will register entity columns as is,
* as they are in the database. This can cause clashes when multiple
* entities are fetched that have columns with the same name.
*
* @var int
*/
const COLUMN_RENAMING_NONE = 1;
/**
* Picking custom renaming allows the user to define the renaming
* of specific columns with a rename array that contains column names as
* keys and result alias as values.
*
* @var int
*/
const COLUMN_RENAMING_CUSTOM = 2;
/**
* Incremental renaming uses a result set mapping internal counter to add a
* number to each column result, leading to uniqueness. This only works if
* you use {@see generateSelectClause()} to generate the SELECT clause for
* you.
*
* @var int
*/
const COLUMN_RENAMING_INCREMENT = 3;
/**
* @var int
*/
private $sqlCounter = 0;
/**
* @var EntityManager
*/
@ -48,12 +81,15 @@ class ResultSetMappingBuilder extends ResultSetMapping
*
* @param string $class The class name of the root entity.
* @param string $alias The unique alias to use for the root entity.
* @param int|array $renameMode One of the COLUMN_RENAMING_* constants or array for BC reasons (CUSTOM).
* @param array $renamedColumns Columns that have been renamed (tableColumnName => queryColumnName)
*/
public function addRootEntityFromClassMetadata($class, $alias, $renamedColumns = array())
public function addRootEntityFromClassMetadata($class, $alias, $renameMode = self::COLUMN_RENAMING_NONE, $renamedColumns = array())
{
$columnAliasMap = $this->getColumnAliasMap($class, $renameMode, $renamedColumns);
$this->addEntityResult($class, $alias);
$this->addAllClassFields($class, $alias, $renamedColumns);
$this->addAllClassFields($class, $alias, $columnAliasMap);
}
/**
@ -63,50 +99,122 @@ class ResultSetMappingBuilder extends ResultSetMapping
* @param string $alias The unique alias to use for the joined entity.
* @param string $parentAlias The alias of the entity result that is the parent of this joined result.
* @param object $relation The association field that connects the parent entity result with the joined entity result.
* @param int|array $renameMode
* @param array $renamedColumns Columns that have been renamed (tableColumnName => queryColumnName)
*/
public function addJoinedEntityFromClassMetadata($class, $alias, $parentAlias, $relation, $renamedColumns = array())
public function addJoinedEntityFromClassMetadata($class, $alias, $parentAlias, $relation, $renameMode = self::COLUMN_RENAMING_NONE, $renamedColumns = array())
{
$columnAliasMap = $this->getColumnAliasMap($class, $renameMode, $renamedColumns);
$this->addJoinedEntityResult($class, $alias, $parentAlias, $relation);
$this->addAllClassFields($class, $alias, $renamedColumns);
$this->addAllClassFields($class, $alias, $columnAliasMap);
}
/**
* Adds all fields of the given class to the result set mapping (columns and meta fields)
*/
protected function addAllClassFields($class, $alias, $renamedColumns = array())
protected function addAllClassFields($class, $alias, $columnAliasMap = array())
{
$classMetadata = $this->em->getClassMetadata($class);
$platform = $this->em->getConnection()->getDatabasePlatform();
if ($classMetadata->isInheritanceTypeSingleTable() || $classMetadata->isInheritanceTypeJoined()) {
throw new \InvalidArgumentException('ResultSetMapping builder does not currently support inheritance.');
}
$platform = $this->em->getConnection()->getDatabasePlatform();
foreach ($classMetadata->getColumnNames() as $columnName) {
$propertyName = $classMetadata->getFieldName($columnName);
if (isset($renamedColumns[$columnName])) {
$columnName = $renamedColumns[$columnName];
}
$columnName = $platform->getSQLResultCasing($columnName);
if (isset($this->fieldMappings[$columnName])) {
$columnAlias = $platform->getSQLResultCasing($columnAliasMap[$columnName]);
if (isset($this->fieldMappings[$columnAlias])) {
throw new \InvalidArgumentException("The column '$columnName' conflicts with another column in the mapper.");
}
$this->addFieldResult($alias, $columnName, $propertyName);
$this->addFieldResult($alias, $columnAlias, $propertyName);
}
foreach ($classMetadata->associationMappings as $associationMapping) {
if ($associationMapping['isOwningSide'] && $associationMapping['type'] & ClassMetadataInfo::TO_ONE) {
foreach ($associationMapping['joinColumns'] as $joinColumn) {
$columnName = $joinColumn['name'];
$renamedColumnName = isset($renamedColumns[$columnName]) ? $renamedColumns[$columnName] : $columnName;
$renamedColumnName = $platform->getSQLResultCasing($renamedColumnName);
if (isset($this->metaMappings[$renamedColumnName])) {
throw new \InvalidArgumentException("The column '$renamedColumnName' conflicts with another column in the mapper.");
$columnAlias = $platform->getSQLResultCasing($columnAliasMap[$columnName]);
if (isset($this->metaMappings[$columnAlias])) {
throw new \InvalidArgumentException("The column '$columnAlias' conflicts with another column in the mapper.");
}
$this->addMetaResult($alias, $renamedColumnName, $columnName);
$this->addMetaResult($alias, $columnAlias, $columnName);
}
}
}
}
/**
* Get column alias for a given column.
*
* @param string $columnName
* @param int $mode
* @param array $customRenameColumns
*
* @return string
*/
private function getColumnAlias($columnName, $mode, array $customRenameColumns)
{
switch ($mode) {
case self::COLUMN_RENAMING_INCREMENT:
return $columnName . $this->sqlCounter++;
case self::COLUMN_RENAMING_CUSTOM:
return isset($customRenameColumns[$columnName])
? $customRenameColumns[$columnName] : $columnName;
case self::COLUMN_RENAMING_NONE:
return $columnName;
}
}
/**
* Retrieve a class columns and join columns aliases that are used
* in the SELECT clause.
*
* This depends on the renaming mode selected by the user.
*
* @param string $className
* @param int|array $mode
* @param array $customRenameColumns
*
* @return array
*/
private function getColumnAliasMap($className, $mode, array $customRenameColumns)
{
if (is_array($mode)) {
$customRenameColumns = $mode;
$mode = self::COLUMN_RENAMING_CUSTOM;
}
$columnAlias = array();
$class = $this->em->getClassMetadata($className);
foreach ($class->getColumnNames() as $columnName) {
$columnAlias[$columnName] = $this->getColumnAlias($columnName, $mode, $customRenameColumns);
}
foreach ($class->associationMappings as $associationMapping) {
if ($associationMapping['isOwningSide'] && $associationMapping['type'] & ClassMetadataInfo::TO_ONE) {
foreach ($associationMapping['joinColumns'] as $joinColumn) {
$columnName = $joinColumn['name'];
$columnAlias[$columnName] = $this->getColumnAlias($columnName, $mode, $customRenameColumns);
}
}
}
return $columnAlias;
}
/**
* Adds the mappings of the results of native SQL queries to the result set.
@ -261,4 +369,46 @@ class ResultSetMappingBuilder extends ResultSetMapping
return $this;
}
/**
* Generate the Select clause from this ResultSetMappingBuilder
*
* Works only for all the entity results. The select parts for scalar
* expressions have to be written manually.
*
* @return string
*/
public function generateSelectClause($tableAliases = array())
{
$sql = "";
foreach ($this->columnOwnerMap as $columnName => $dqlAlias) {
$tableAlias = isset($tableAliases[$dqlAlias])
? $tableAliases[$dqlAlias] : $dqlAlias;
if ($sql) {
$sql .= ", ";
}
$sql .= $tableAlias . ".";
if (isset($this->fieldMappings[$columnName])) {
$class = $this->em->getClassMetadata($this->declaringClasses[$columnName]);
$sql .= $class->fieldMappings[$this->fieldMappings[$columnName]]['columnName'];
} else if (isset($this->metaMappings[$columnName])) {
$sql .= $this->metaMappings[$columnName];
} else if (isset($this->discriminatorColumn[$columnName])) {
$sql .= $this->discriminatorColumn[$columnName];
}
$sql .= " AS " . $columnName;
}
return $sql;
}
public function __toString()
{
return $this->generateSelectClause(array());
}
}

65
tests/Doctrine/Tests/ORM/Functional/NativeQueryTest.php
View File

@ -709,4 +709,69 @@ class NativeQueryTest extends \Doctrine\Tests\OrmFunctionalTestCase
}
/**
* @group DDC-2055
*/
public function testGenerateSelectClauseNoRenameSingleEntity()
{
$rsm = new ResultSetMappingBuilder($this->_em);
$rsm->addRootEntityFromClassMetadata('Doctrine\Tests\Models\CMS\CmsUser', 'u');
$selectClause = $rsm->generateSelectClause();
$this->assertEquals('u.id AS id, u.status AS status, u.username AS username, u.name AS name, u.email_id AS email_id', $selectClause);
}
/**
* @group DDC-2055
*/
public function testGenerateSelectClauseCustomRenames()
{
$rsm = new ResultSetMappingBuilder($this->_em);
$rsm->addRootEntityFromClassMetadata('Doctrine\Tests\Models\CMS\CmsUser', 'u', array(
'id' => 'id1',
'username' => 'username2'
));
$selectClause = $rsm->generateSelectClause();
$this->assertEquals('u.id AS id1, u.status AS status, u.username AS username2, u.name AS name, u.email_id AS email_id', $selectClause);
}
/**
* @group DDC-2055
*/
public function testGenerateSelectClauseRenameTableAlias()
{
$rsm = new ResultSetMappingBuilder($this->_em);
$rsm->addRootEntityFromClassMetadata('Doctrine\Tests\Models\CMS\CmsUser', 'u');
$selectClause = $rsm->generateSelectClause(array('u' => 'u1'));
$this->assertEquals('u1.id AS id, u1.status AS status, u1.username AS username, u1.name AS name, u1.email_id AS email_id', $selectClause);
}
/**
* @group DDC-2055
*/
public function testGenerateSelectClauseIncrement()
{
$rsm = new ResultSetMappingBuilder($this->_em);
$rsm->addRootEntityFromClassMetadata('Doctrine\Tests\Models\CMS\CmsUser', 'u', ResultSetMappingBuilder::COLUMN_RENAMING_INCREMENT);
$selectClause = $rsm->generateSelectClause();
$this->assertEquals('u.id AS id0, u.status AS status1, u.username AS username2, u.name AS name3, u.email_id AS email_id4', $selectClause);
}
/**
* @group DDC-2055
*/
public function testGenerateSelectClauseToString()
{
$rsm = new ResultSetMappingBuilder($this->_em);
$rsm->addRootEntityFromClassMetadata('Doctrine\Tests\Models\CMS\CmsUser', 'u', ResultSetMappingBuilder::COLUMN_RENAMING_INCREMENT);
$this->assertEquals('u.id AS id0, u.status AS status1, u.username AS username2, u.name AS name3, u.email_id AS email_id4', (string)$rsm);
}
}