/**
* Gets the ResourceAssociationSet instance for the given source association end,
* Note: Wrapper for IDataServiceMetadataProvider::getResourceAssociationSet
* method implementation
*
* @param ResourceSetWrapper $resourceSetWrapper Resource set of the source
* association end
* @param ResourceType $resourceType Resource type of the source
* association end
* @param ResourceProperty $resourceProperty Resource property of the source
* association end
*
* @return ResourceAssociationSet/NULL Returns ResourceAssociationSet for the source
* association end, NULL if no such
* association end or resource set in the
* other end of the association is invisible
*/
public function getResourceAssociationSet(ResourceSetWrapper $resourceSetWrapper, ResourceType $resourceType, ResourceProperty $resourceProperty)
{
$resourceType = $this->_getResourceTypeWherePropertyIsDeclared($resourceType, $resourceProperty);
$cacheKey = $resourceSetWrapper->getName() . '_' . $resourceType->getName() . '_' . $resourceProperty->getName();
if (array_key_exists($cacheKey, $this->_resourceAssociationSetCache)) {
return $this->_resourceAssociationSetCache[$cacheKey];
}
$associationSet = $this->_metadataProvider->getResourceAssociationSet($resourceSetWrapper->getResourceSet(), $resourceType, $resourceProperty);
if (!is_null($associationSet)) {
$thisAssociationSetEnd = $associationSet->getResourceAssociationSetEnd($resourceSetWrapper->getResourceSet(), $resourceType, $resourceProperty);
$relatedAssociationSetEnd = $associationSet->getRelatedResourceAssociationSetEnd($resourceSetWrapper->getResourceSet(), $resourceType, $resourceProperty);
//If $thisAssociationSetEnd or $relatedAssociationSetEnd
//is null means the associationset
//we got from the IDSMP::getResourceAssociationSet is invalid.
//AssociationSet::getResourceAssociationSetEnd
//return null, if AssociationSet's End1 or End2's resourceset name
//is not matching with the name of
//resource set wrapper (param1) and resource type is not assignable
//from given resource type (param2)
if (is_null($thisAssociationSetEnd) || is_null($relatedAssociationSetEnd)) {
throw new ODataException(Messages::metadataQueryProviderWrapperIDSMPGetResourceSetReturnsInvalidResourceSet($resourceSetWrapper->getName(), $resourceType->getFullName(), $resourceProperty->getName()), 500);
}
$relatedResourceSetWrapper = $this->_validateResourceSetAndGetWrapper($relatedAssociationSetEnd->getResourceSet());
if ($relatedResourceSetWrapper === null) {
$associationSet = null;
} else {
$this->_validateResourceType($thisAssociationSetEnd->getResourceType());
$this->_validateResourceType($relatedAssociationSetEnd->getResourceType());
}
}
$this->_resourceAssociationSetCache[$cacheKey] = $associationSet;
return $associationSet;
}
