/**
* Walks down a SelectExpression AST node and generates the corresponding SQL.
*
* @param SelectExpression $selectExpression
* @return string The SQL.
*/
public function walkSelectExpression($selectExpression)
{
$sql = '';
$expr = $selectExpression->expression;
if ($expr instanceof AST\PathExpression) {
if ($expr->type == AST\PathExpression::TYPE_STATE_FIELD) {
$parts = $expr->parts;
$fieldName = array_pop($parts);
$dqlAlias = $expr->identificationVariable . (!empty($parts) ? '.' . implode('.', $parts) : '');
$qComp = $this->_queryComponents[$dqlAlias];
$class = $qComp['metadata'];
if (!$selectExpression->fieldIdentificationVariable) {
$resultAlias = $fieldName;
} else {
$resultAlias = $selectExpression->fieldIdentificationVariable;
}
if ($class->isInheritanceTypeJoined()) {
$tableName = $this->_em->getUnitOfWork()->getEntityPersister($class->name)->getOwningTable($fieldName);
} else {
$tableName = $class->getTableName();
}
$sqlTableAlias = $this->getSqlTableAlias($tableName, $dqlAlias);
$columnName = $class->getQuotedColumnName($fieldName, $this->_platform);
$columnAlias = $this->getSqlColumnAlias($columnName);
$sql .= $sqlTableAlias . '.' . $columnName . ' AS ' . $columnAlias;
$columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
$this->_rsm->addScalarResult($columnAlias, $resultAlias);
} else {
throw QueryException::invalidPathExpression($expr->type);
}
} else {
if ($expr instanceof AST\AggregateExpression) {
if (!$selectExpression->fieldIdentificationVariable) {
$resultAlias = $this->_scalarResultCounter++;
} else {
$resultAlias = $selectExpression->fieldIdentificationVariable;
}
$columnAlias = 'sclr' . $this->_aliasCounter++;
$sql .= $this->walkAggregateExpression($expr) . ' AS ' . $columnAlias;
$this->_scalarResultAliasMap[$resultAlias] = $columnAlias;
$columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
$this->_rsm->addScalarResult($columnAlias, $resultAlias);
} else {
if ($expr instanceof AST\Subselect) {
if (!$selectExpression->fieldIdentificationVariable) {
$resultAlias = $this->_scalarResultCounter++;
} else {
$resultAlias = $selectExpression->fieldIdentificationVariable;
}
$columnAlias = 'sclr' . $this->_aliasCounter++;
$sql .= '(' . $this->walkSubselect($expr) . ') AS ' . $columnAlias;
$this->_scalarResultAliasMap[$resultAlias] = $columnAlias;
$columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
$this->_rsm->addScalarResult($columnAlias, $resultAlias);
} else {
if ($expr instanceof AST\Functions\FunctionNode) {
if (!$selectExpression->fieldIdentificationVariable) {
$resultAlias = $this->_scalarResultCounter++;
} else {
$resultAlias = $selectExpression->fieldIdentificationVariable;
}
$columnAlias = 'sclr' . $this->_aliasCounter++;
$sql .= $this->walkFunction($expr) . ' AS ' . $columnAlias;
$this->_scalarResultAliasMap[$resultAlias] = $columnAlias;
$columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
$this->_rsm->addScalarResult($columnAlias, $resultAlias);
} else {
if ($expr instanceof AST\SimpleArithmeticExpression) {
if (!$selectExpression->fieldIdentificationVariable) {
$resultAlias = $this->_scalarResultCounter++;
} else {
$resultAlias = $selectExpression->fieldIdentificationVariable;
}
$columnAlias = 'sclr' . $this->_aliasCounter++;
$sql .= $this->walkSimpleArithmeticExpression($expr) . ' AS ' . $columnAlias;
$this->_scalarResultAliasMap[$resultAlias] = $columnAlias;
$columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
$this->_rsm->addScalarResult($columnAlias, $resultAlias);
} else {
// IdentificationVariable or PartialObjectExpression
if ($expr instanceof AST\PartialObjectExpression) {
$dqlAlias = $expr->identificationVariable;
$partialFieldSet = $expr->partialFieldSet;
} else {
$dqlAlias = $expr;
$partialFieldSet = array();
}
$queryComp = $this->_queryComponents[$dqlAlias];
$class = $queryComp['metadata'];
if (!isset($this->_selectedClasses[$dqlAlias])) {
$this->_selectedClasses[$dqlAlias] = $class;
}
$beginning = true;
// Select all fields from the queried class
foreach ($class->fieldMappings as $fieldName => $mapping) {
if ($partialFieldSet && !in_array($fieldName, $partialFieldSet)) {
continue;
}
if (isset($mapping['inherited'])) {
$tableName = $this->_em->getClassMetadata($mapping['inherited'])->primaryTable['name'];
} else {
$tableName = $class->primaryTable['name'];
}
if ($beginning) {
$beginning = false;
} else {
$sql .= ', ';
}
$sqlTableAlias = $this->getSqlTableAlias($tableName, $dqlAlias);
$columnAlias = $this->getSqlColumnAlias($mapping['columnName']);
$sql .= $sqlTableAlias . '.' . $class->getQuotedColumnName($fieldName, $this->_platform) . ' AS ' . $columnAlias;
$columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
$this->_rsm->addFieldResult($dqlAlias, $columnAlias, $fieldName, $class->name);
}
// Add any additional fields of subclasses (excluding inherited fields)
// 1) on Single Table Inheritance: always, since its marginal overhead
// 2) on Class Table Inheritance only if partial objects are disallowed,
// since it requires outer joining subtables.
if ($class->isInheritanceTypeSingleTable() || !$this->_query->getHint(Query::HINT_FORCE_PARTIAL_LOAD)) {
foreach ($class->subClasses as $subClassName) {
$subClass = $this->_em->getClassMetadata($subClassName);
$sqlTableAlias = $this->getSqlTableAlias($subClass->primaryTable['name'], $dqlAlias);
foreach ($subClass->fieldMappings as $fieldName => $mapping) {
if (isset($mapping['inherited']) || $partialFieldSet && !in_array($fieldName, $partialFieldSet)) {
continue;
}
if ($beginning) {
$beginning = false;
} else {
$sql .= ', ';
}
$columnAlias = $this->getSqlColumnAlias($mapping['columnName']);
$sql .= $sqlTableAlias . '.' . $subClass->getQuotedColumnName($fieldName, $this->_platform) . ' AS ' . $columnAlias;
$columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
$this->_rsm->addFieldResult($dqlAlias, $columnAlias, $fieldName, $subClassName);
}
// Add join columns (foreign keys) of the subclass
//TODO: Probably better do this in walkSelectClause to honor the INCLUDE_META_COLUMNS hint
foreach ($subClass->associationMappings as $fieldName => $assoc) {
if ($assoc->isOwningSide && $assoc->isOneToOne() && !isset($subClass->inheritedAssociationFields[$fieldName])) {
foreach ($assoc->targetToSourceKeyColumns as $srcColumn) {
if ($beginning) {
$beginning = false;
} else {
$sql .= ', ';
}
$columnAlias = $this->getSqlColumnAlias($srcColumn);
$sql .= $sqlTableAlias . '.' . $srcColumn . ' AS ' . $columnAlias;
$this->_rsm->addMetaResult($dqlAlias, $this->_platform->getSQLResultCasing($columnAlias), $srcColumn);
}
}
}
}
}
}
}
}
}
}
return $sql;
}
/**
* {@inheritdoc}
*/
public function walkSelectExpression($selectExpression)
{
$sql = '';
$expr = $selectExpression->expression;
$hidden = $selectExpression->hiddenAliasResultVariable;
switch (true) {
case $expr instanceof AST\PathExpression:
if ($expr->type !== AST\PathExpression::TYPE_STATE_FIELD) {
throw QueryException::invalidPathExpression($expr);
}
$fieldName = $expr->field;
$dqlAlias = $expr->identificationVariable;
$qComp = $this->queryComponents[$dqlAlias];
$class = $qComp['metadata'];
$resultAlias = $selectExpression->fieldIdentificationVariable ?: $fieldName;
$tableName = $class->isInheritanceTypeJoined() ? $this->em->getUnitOfWork()->getEntityPersister($class->name)->getOwningTable($fieldName) : $class->getTableName();
$sqlTableAlias = $this->getSQLTableAlias($tableName, $dqlAlias);
$columnName = $this->quoteStrategy->getColumnName($fieldName, $class, $this->platform);
$columnAlias = $this->getSQLColumnAlias($class->fieldMappings[$fieldName]['columnName']);
$col = $sqlTableAlias . '.' . $columnName;
$fieldType = $class->getTypeOfField($fieldName);
if (isset($class->fieldMappings[$fieldName]['requireSQLConversion'])) {
$type = Type::getType($fieldType);
$col = $type->convertToPHPValueSQL($col, $this->conn->getDatabasePlatform());
}
$sql .= $col . ' AS ' . $columnAlias;
$this->scalarResultAliasMap[$resultAlias] = $columnAlias;
if (!$hidden) {
$this->rsm->addScalarResult($columnAlias, $resultAlias, $fieldType);
$this->scalarFields[$dqlAlias][$fieldName] = $columnAlias;
}
break;
case $expr instanceof AST\AggregateExpression:
case $expr instanceof AST\Functions\FunctionNode:
case $expr instanceof AST\SimpleArithmeticExpression:
case $expr instanceof AST\ArithmeticTerm:
case $expr instanceof AST\ArithmeticFactor:
case $expr instanceof AST\Literal:
case $expr instanceof AST\NullIfExpression:
case $expr instanceof AST\CoalesceExpression:
case $expr instanceof AST\GeneralCaseExpression:
case $expr instanceof AST\SimpleCaseExpression:
$columnAlias = $this->getSQLColumnAlias('sclr');
$resultAlias = $selectExpression->fieldIdentificationVariable ?: $this->scalarResultCounter++;
$sql .= $expr->dispatch($this) . ' AS ' . $columnAlias;
$this->scalarResultAliasMap[$resultAlias] = $columnAlias;
if (!$hidden) {
// We cannot resolve field type here; assume 'string'.
$this->rsm->addScalarResult($columnAlias, $resultAlias, 'string');
}
break;
case $expr instanceof AST\Subselect:
$columnAlias = $this->getSQLColumnAlias('sclr');
$resultAlias = $selectExpression->fieldIdentificationVariable ?: $this->scalarResultCounter++;
$sql .= '(' . $this->walkSubselect($expr) . ') AS ' . $columnAlias;
$this->scalarResultAliasMap[$resultAlias] = $columnAlias;
if (!$hidden) {
// We cannot resolve field type here; assume 'string'.
$this->rsm->addScalarResult($columnAlias, $resultAlias, 'string');
}
break;
case $expr instanceof AST\NewObjectExpression:
$sql .= $this->walkNewObject($expr);
break;
default:
// IdentificationVariable or PartialObjectExpression
if ($expr instanceof AST\PartialObjectExpression) {
$dqlAlias = $expr->identificationVariable;
$partialFieldSet = $expr->partialFieldSet;
} else {
$dqlAlias = $expr;
$partialFieldSet = array();
}
$queryComp = $this->queryComponents[$dqlAlias];
$class = $queryComp['metadata'];
$resultAlias = $selectExpression->fieldIdentificationVariable ?: null;
if (!isset($this->selectedClasses[$dqlAlias])) {
$this->selectedClasses[$dqlAlias] = array('class' => $class, 'dqlAlias' => $dqlAlias, 'resultAlias' => $resultAlias);
}
$sqlParts = array();
// Select all fields from the queried class
foreach ($class->fieldMappings as $fieldName => $mapping) {
if ($partialFieldSet && !in_array($fieldName, $partialFieldSet)) {
continue;
}
$tableName = isset($mapping['inherited']) ? $this->em->getClassMetadata($mapping['inherited'])->getTableName() : $class->getTableName();
$sqlTableAlias = $this->getSQLTableAlias($tableName, $dqlAlias);
$columnAlias = $this->getSQLColumnAlias($mapping['columnName']);
$quotedColumnName = $this->quoteStrategy->getColumnName($fieldName, $class, $this->platform);
$col = $sqlTableAlias . '.' . $quotedColumnName;
if (isset($class->fieldMappings[$fieldName]['requireSQLConversion'])) {
$type = Type::getType($class->getTypeOfField($fieldName));
$col = $type->convertToPHPValueSQL($col, $this->platform);
}
$sqlParts[] = $col . ' AS ' . $columnAlias;
$this->scalarResultAliasMap[$resultAlias][] = $columnAlias;
$this->rsm->addFieldResult($dqlAlias, $columnAlias, $fieldName, $class->name);
}
// Add any additional fields of subclasses (excluding inherited fields)
// 1) on Single Table Inheritance: always, since its marginal overhead
// 2) on Class Table Inheritance only if partial objects are disallowed,
// since it requires outer joining subtables.
if ($class->isInheritanceTypeSingleTable() || !$this->query->getHint(Query::HINT_FORCE_PARTIAL_LOAD)) {
foreach ($class->subClasses as $subClassName) {
$subClass = $this->em->getClassMetadata($subClassName);
$sqlTableAlias = $this->getSQLTableAlias($subClass->getTableName(), $dqlAlias);
foreach ($subClass->fieldMappings as $fieldName => $mapping) {
if (isset($mapping['inherited']) || $partialFieldSet && !in_array($fieldName, $partialFieldSet)) {
continue;
}
$columnAlias = $this->getSQLColumnAlias($mapping['columnName']);
$quotedColumnName = $this->quoteStrategy->getColumnName($fieldName, $subClass, $this->platform);
$col = $sqlTableAlias . '.' . $quotedColumnName;
if (isset($subClass->fieldMappings[$fieldName]['requireSQLConversion'])) {
$type = Type::getType($subClass->getTypeOfField($fieldName));
$col = $type->convertToPHPValueSQL($col, $this->platform);
}
$sqlParts[] = $col . ' AS ' . $columnAlias;
$this->scalarResultAliasMap[$resultAlias][] = $columnAlias;
$this->rsm->addFieldResult($dqlAlias, $columnAlias, $fieldName, $subClassName);
}
}
}
$sql .= implode(', ', $sqlParts);
}
return $sql;
}
/**
* Walks down a PathExpression AST node, thereby generating the appropriate SQL.
*
* @param mixed
* @return string The SQL.
*/
public function walkPathExpression($pathExpr)
{
$sql = '';
$pathExprType = $pathExpr->type;
switch ($pathExpr->type) {
case AST\PathExpression::TYPE_STATE_FIELD:
$parts = $pathExpr->parts;
$fieldName = array_pop($parts);
$dqlAlias = $pathExpr->identificationVariable . (!empty($parts) ? '.' . implode('.', $parts) : '');
$qComp = $this->_queryComponents[$dqlAlias];
$class = $qComp['metadata'];
if ($this->_useSqlTableAliases) {
$sql .= $this->walkIdentificationVariable($dqlAlias, $fieldName) . '.';
}
$sql .= $class->getQuotedColumnName($fieldName, $this->_platform);
break;
case AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION:
// "u.Group" should be converted to:
// 1- IdentificationVariable is the owning side:
// Just append the condition: u.group_id = ?
/*$parts = $pathExpr->parts;
$numParts = count($parts);
$dqlAlias = $pathExpr->identificationVariable;
$fieldName = $parts[$numParts - 1];
$qComp = $this->_queryComponents[$dqlAlias];
$class = $qComp['metadata'];
$assoc = $class->associationMappings[$fieldName];
if ($assoc->isOwningSide) {
foreach ($assoc->)
$sql .= $this->walkIdentificationVariable($dqlAlias, $fieldName) . '.';
}
// 2- IdentificationVariable is the inverse side:
// Join required: INNER JOIN u.Group g
// Append condition: g.id = ?
break;*/
// "u.Group" should be converted to:
// 1- IdentificationVariable is the owning side:
// Just append the condition: u.group_id = ?
/*$parts = $pathExpr->parts;
$numParts = count($parts);
$dqlAlias = $pathExpr->identificationVariable;
$fieldName = $parts[$numParts - 1];
$qComp = $this->_queryComponents[$dqlAlias];
$class = $qComp['metadata'];
$assoc = $class->associationMappings[$fieldName];
if ($assoc->isOwningSide) {
foreach ($assoc->)
$sql .= $this->walkIdentificationVariable($dqlAlias, $fieldName) . '.';
}
// 2- IdentificationVariable is the inverse side:
// Join required: INNER JOIN u.Group g
// Append condition: g.id = ?
break;*/
case AST\PathExpression::TYPE_COLLECTION_VALUED_ASSOCIATION:
throw DoctrineException::notImplemented();
default:
throw QueryException::invalidPathExpression($pathExpr);
}
return $sql;
}
