protected final function MapExpression(Mapping\IEntityRelationalMap $EntityRelationalMap, O\Expression $Expression)
{
/* @var $ExpressionMapper RR\IExpressionMapper */
$ExpressionMapper = $this->GetDatabase()->GetPlatform()->GetExpressionMapper();
switch (true) {
case $Expression instanceof O\PropertyExpression:
return array_map([Expression::GetType(), 'ReviveColumn'], $EntityRelationalMap->GetMappedReviveColumns($Expression->GetProperty()));
case $Expression instanceof O\ConstantExpression:
return [$ExpressionMapper->MapConstantExpression($Expression->GetValue())];
case $Expression instanceof O\ObjectExpression:
if (!$Expression->HasInstance()) {
throw new Mapping\MappingException('Cannot map object expression without a valid object instance.');
}
return [$ExpressionMapper->MapObjectExpression($Expression->GetClassType(), $Expression->GetInstance())];
case $Expression instanceof O\PropertyFetchExpression:
$ObjectExpression = $Expression->GetObjectExpression();
return [$ExpressionMapper->MapPropertyFetchExpression($Expression->IsStatic() ? null : $this->MapExpression($EntityRelationalMap, $ObjectExpression)[0], $Expression->GetClassType(), $Expression->GetName())];
case $Expression instanceof O\MethodCallExpression:
$ObjectExpression = $Expression->GetObjectExpression();
return [$ExpressionMapper->MapMethodCallExpression($Expression->IsStatic() ? null : $this->MapExpression($EntityRelationalMap, $ObjectExpression)[0], $Expression->GetClassType(), $Expression->GetName(), array_map(function ($Expression) use(&$EntityRelationalMap) {
return $this->MapExpression($EntityRelationalMap, $Expression)[0];
}, $Expression->GetArgumentValueExpressions()))];
case $Expression instanceof O\ArrayExpression:
return [Expression::ValueList(array_map(function ($Expression) use(&$EntityRelationalMap) {
return $this->MapExpression($EntityRelationalMap, $Expression)[0];
}, $Expression->GetValueExpressions()))];
//Limitation: only one to one mapping for some expressions
//Limitation: only one to one mapping for some expressions
case $Expression instanceof O\AssignmentExpression:
$ColumnExpressions = array_map([Expression::GetType(), 'Column'], $EntityRelationalMap->GetMappedPersistColumns($Expression->GetProperty()));
$Operator = $this->OperatorMapper->MapAssignmentOperator($Expression->GetOperator());
$SetValueExpression = $this->MapExpression($EntityRelationalMap, $Expression->GetRightOperandExpression())[0];
return array_map(function ($ColumnExpression) use(&$ExpressionMapper, &$Operator, &$SetValueExpression) {
return $ExpressionMapper->MapAssignmentExpression($ColumnExpression, $Operator, $SetValueExpression);
}, $ColumnExpressions);
case $Expression instanceof O\BinaryOperationExpression:
return [$ExpressionMapper->MapBinaryOperationExpression($this->MapExpression($EntityRelationalMap, $Expression->GetLeftOperandExpression())[0], $this->OperatorMapper->MapBinaryOperator($Expression->GetOperator()), $this->MapExpression($EntityRelationalMap, $Expression->GetRightOperandExpression())[0])];
case $Expression instanceof O\UnaryOperationExpression:
return [$ExpressionMapper->MapUnaryOperationExpression($this->OperatorMapper->MapUnaryOperator($Expression->GetOperator()), $this->MapExpression($EntityRelationalMap, $Expression->GetOperandExpression())[0])];
case $Expression instanceof O\CastExpression:
return [$ExpressionMapper->MapCastExpression($this->OperatorMapper->MapCastOperator($Expression->GetCastType()), $this->MapExpression($EntityRelationalMap, $Expression->GetCastValueExpression())[0])];
case $Expression instanceof O\FunctionCallExpression:
return [$ExpressionMapper->MapFunctionCallExpression($Expression->GetName(), array_map(function ($Expression) use(&$EntityRelationalMap) {
return $this->MapExpression($EntityRelationalMap, $Expression)[0];
}, $Expression->GetArgumentValueExpressions()))];
case $Expression instanceof O\TernaryExpression:
return [$ExpressionMapper->MapIfExpression($this->MapExpression($EntityRelationalMap, $Expression->GetConditionExpression())[0], $this->MapExpression($EntityRelationalMap, $Expression->GetIfTrueExpression())[0], $this->MapExpression($EntityRelationalMap, $Expression->GetIfFalseExpression())[0])];
default:
throw new Mapping\MappingException('Unsupported object expression type %s given', get_class($Expression));
}
}
public function MapBinaryOperationExpression(CoreExpression $LeftOperandExpression, $BinaryOperator, CoreExpression $RightOperandExpression)
{
if ($LeftOperandExpression instanceof E\BinaryOperationExpression) {
$NestedOperand = $LeftOperandExpression->GetLeftOperandExpression();
if ($NestedOperand instanceof E\FunctionCallExpression && $NestedOperand->GetName() === 'LOCATE') {
if ($RightOperandExpression instanceof EE\ConstantExpression && $RightOperandExpression->GetValue() === false) {
$RightOperandExpression = Expression::Constant(-1);
}
}
}
switch ($BinaryOperator) {
case O\Binary::Concatenation:
return new E\FunctionCallExpression('CONCAT', Expression::ValueList([$LeftOperandExpression, $RightOperandExpression]));
case O\Binary::Power:
return new E\FunctionCallExpression('POW', Expression::ValueList([$LeftOperandExpression, $RightOperandExpression]));
case O\Binary::NullSafeInequality:
return Expression::UnaryOperation(O\Unary::Not, Expression::BinaryOperation($LeftOperandExpression, O\Binary::NullSafeEquality, $RightOperandExpression));
default:
return new E\BinaryOperationExpression($LeftOperandExpression, $BinaryOperator, $RightOperandExpression);
}
}
public function GetPersistExpression(CoreExpression $Expression)
{
return Expression::FunctionCall('UNHEX', Expression::ValueList([$Expression]));
}
private function AddDateTimeInterval(CoreExpression &$ObjectExpression, CoreExpression $Value, $Unit)
{
$ObjectExpression = Expression::FunctionCall('TIMESTAMPADD', Expression::ValueList([Expression::Keyword($Unit), $Value, $ObjectExpression]));
}
public function GetPersistExpression(CoreExpression $Expression)
{
return Expression::FunctionCall($this->PersistFunctionName, Expression::ValueList([$Expression]));
}