/**
* Gets the ResourceAssociationType instance for the given
* ResourceAssociationSet and one of it's end.
*
* This function first searches the ResourceAssociationType cache,
* if found return it otherwise create the Association type for the given
* association set, cache and return it.
*
* Creation of ResourceAssociationType includes two sub-tasks:
* 1. Deciding name of 'ResourceAssociationType'
* (see the function _getAssociationTypeName)
* 2. Deciding names for two 'ResourceAssociationTypeEnd' of the
* 'ResourceAssociationType'
* Refer ./AssociationSetAndTypeNamingRules.txt for naming rules.
*
* @param ResourceAssociationSet $resourceAssociationSet Association set to get the association type
* @param ResourceSetWrapper $resourceSet Resource set for one of the ends of given association set
* @param ResourceType $resourceType Resource type for one of the ends of given association set
* @param ResourceProperty $navigationProperty Resource property for one of the ends of given association set
*
*
* @return ResourceAssociationType The association type for the given association set
*
*/
private function _getResourceAssociationType(ResourceAssociationSet $resourceAssociationSet, ResourceSetWrapper $resourceSet, ResourceType $resourceType, ResourceProperty $navigationProperty)
{
$resourceTypeNamespace = $this->getResourceTypeNamespace($resourceType);
$resourceAssociationTypesInNamespace =& $this->getResourceAssociationTypesForNamespace($resourceTypeNamespace);
$associationTypeLookupKey = $resourceType->getName() . '_' . $navigationProperty->getName();
if (array_key_exists($associationTypeLookupKey, $resourceAssociationTypesInNamespace)) {
return $resourceAssociationTypesInNamespace[$associationTypeLookupKey];
}
//Generate resource association type end names
//Refer ./AssociationSetAndTypeNamingRules.txt
$associationTypeEnd1Name = $associationTypeEnd2Name = null;
$isBiDirectional = $resourceAssociationSet->isBidirectional();
if ($isBiDirectional) {
$associationTypeEnd1Name = $resourceAssociationSet->getEnd1()->getResourceType()->getName() . '_' . $resourceAssociationSet->getEnd1()->getResourceProperty()->getName();
$associationTypeEnd2Name = $resourceAssociationSet->getEnd2()->getResourceType()->getName() . '_' . $resourceAssociationSet->getEnd2()->getResourceProperty()->getName();
} else {
if (!is_null($resourceAssociationSet->getEnd1()->getResourceProperty())) {
$associationTypeEnd1Name = $resourceAssociationSet->getEnd1()->getResourceType()->getName();
$associationTypeEnd2Name = $resourceAssociationSet->getEnd1()->getResourceProperty()->getName();
} else {
$associationTypeEnd1Name = $resourceAssociationSet->getEnd2()->getResourceProperty()->getName();
$associationTypeEnd2Name = $resourceAssociationSet->getEnd2()->getResourceType()->getName();
}
}
//Generate resource association type name
//Refer ./AssociationSetAndTypeNamingRules.txt
$resourceAssociationTypeName = $this->_getAssociationTypeName($resourceAssociationSet);
//Create and cache the association type
$resourceAssociationType = new ResourceAssociationType($resourceAssociationTypeName, $resourceTypeNamespace, new ResourceAssociationTypeEnd($associationTypeEnd1Name, $resourceAssociationSet->getEnd1()->getResourceType(), $resourceAssociationSet->getEnd1()->getResourceProperty(), $resourceAssociationSet->getEnd2()->getResourceProperty()), new ResourceAssociationTypeEnd($associationTypeEnd2Name, $resourceAssociationSet->getEnd2()->getResourceType(), $resourceAssociationSet->getEnd2()->getResourceProperty(), $resourceAssociationSet->getEnd1()->getResourceProperty()));
$resourceAssociationTypesInNamespace[$associationTypeLookupKey] = $resourceAssociationType;
if ($isBiDirectional) {
$relatedAssociationSetEnd = $resourceAssociationSet->getRelatedResourceAssociationSetEnd($resourceSet->getResourceSet(), $resourceType, $navigationProperty);
$relatedEndLookupKey = $relatedAssociationSetEnd->getResourceType()->getName() . '_' . $relatedAssociationSetEnd->getResourceProperty()->getName();
$resourceAssociationTypesInNamespace[$relatedEndLookupKey] = $resourceAssociationType;
}
return $resourceAssociationType;
}
