/**
* Parse the expression
*
* @see library/POData/QueryProcessor/ExpressionParser::parseFilter()
*
* @return AbstractExpression
*
* @throws ODataException
*/
public function parseFilter()
{
$expression = parent::parseFilter();
if (!$expression->typeIs(new Boolean())) {
throw ODataException::createSyntaxError(Messages::expressionParser2BooleanRequired());
}
if ($this->_isPHPExpressionProvider) {
$resultExpression = $this->_processNodeForNullability($expression, null);
if ($resultExpression != null) {
return $resultExpression;
}
}
return $expression;
}
public function testFunctionCallExpression()
{
$expression = 'year(datetime\'1988-11-11\')';
$parser = new ExpressionParser($expression, $this->customersResourceType, false);
$expr = $parser->parseFilter();
$this->assertTrue($expr instanceof FunctionCallExpression);
$this->assertTrue($expr->getType() instanceof Int32);
$expression = "substring('pspl', 1) eq 'pl'";
$parser->resetParser($expression);
$expr = $parser->parseFilter();
$this->assertTrue($expr instanceof RelationalExpression);
/** @var RelationalExpression $expr */
$this->assertTrue($expr->getLeft() instanceof FunctionCallExpression);
$this->assertEquals('strcmp', $expr->getLeft()->getFunctionDescription()->name);
$paramExpressions = $expr->getLeft()->getParamExpressions();
$this->assertEquals(2, count($paramExpressions));
$this->assertTrue($paramExpressions[0] instanceof FunctionCallExpression);
$this->assertEquals('substring', $paramExpressions[0]->getFunctionDescription()->name);
$paramExpressions1 = $paramExpressions[0]->getParamExpressions();
$this->assertEquals(2, count($paramExpressions1));
$this->assertTrue($paramExpressions1[0] instanceof ConstantExpression);
$this->assertEquals("'pspl'", $paramExpressions1[0]->getValue());
$expression = 'unknownFun(1, 3)';
$parser->resetParser($expression);
try {
$expr = $parser->parseFilter();
$this->fail('An expected ODataException for and unknown function was not thrown');
} catch (ODataException $exception) {
$this->assertStringStartsWith('Unknown function \'unknownFun\' at position 0', $exception->getMessage());
}
$expression = 'endswith(\'mystring\'';
$parser->resetParser($expression);
try {
$expr = $parser->parseFilter();
$this->fail('An expected ODataException for function without closing bracket was not thrown');
} catch (ODataException $exception) {
$this->assertStringStartsWith('Close parenthesis expected', $exception->getMessage());
}
$expression = 'trim()';
$parser->resetParser($expression);
try {
$expr = $parser->parseFilter();
$this->fail('An expected ODataException for \'No applicable function found\' was not thrown for trim');
} catch (ODataException $exception) {
$this->assertStringStartsWith('No applicable function found for \'trim\' at position 0 with the specified arguments. The functions considered are: Edm.String trim(Edm.String)', $exception->getMessage());
}
$expression = 'month(123.4)';
$parser->resetParser($expression);
try {
$expr = $parser->parseFilter();
$this->fail('An expected ODataException for \'No applicable function found\' was not thrown for month');
} catch (ODataException $exception) {
$this->assertStringStartsWith('No applicable function found for \'month\' at position', $exception->getMessage());
}
}