@Override public Set<String> findDescendantResources(String parentResourceId, EvaluationCtx context) throws Exception { EvaluationResult environment; String environmentId = null; Set<String> resourceNames = null; NodeList children = context.getRequestRoot().getChildNodes(); for (int i = 0; i < children.getLength(); i++) { Node child = children.item(i); if (child != null) { if (PDPConstants.ENVIRONMENT_ELEMENT.equals(child.getLocalName())) { if (child.getChildNodes() != null && child.getChildNodes().getLength() > 0) { environment = context.getAttribute( new URI(StringAttribute.identifier), new URI(PDPConstants.ENVIRONMENT_ID_DEFAULT), null, new URI(XACMLConstants.ENT_CATEGORY)); if (environment != null && environment.getAttributeValue() != null && environment.getAttributeValue().isBag()) { BagAttribute attr = (BagAttribute) environment.getAttributeValue(); environmentId = ((AttributeValue) attr.iterator().next()).encode(); } } } } } if (isAbstractResourceCacheEnabled) { IdentityCacheKey cacheKey; String key = PDPConstants.RESOURCE_DESCENDANTS + parentResourceId + (environmentId != null ? environmentId : ""); tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId(); cacheKey = new IdentityCacheKey(tenantId, key); IdentityCacheEntry cacheEntry = (IdentityCacheEntry) abstractResourceCache.getValueFromCache(cacheKey); if (cacheEntry != null) { String[] values = cacheEntry.getCacheEntryArray(); resourceNames = new HashSet<String>(Arrays.asList(values)); if (log.isDebugEnabled()) { log.debug("Carbon Resource Cache Hit"); } } if (resourceNames != null) { resourceNames = findDescendantResources(parentResourceId, environmentId); if (log.isDebugEnabled()) { log.debug("Carbon Resource Cache Miss"); } if (resourceNames != null && !resourceNames.isEmpty()) { cacheEntry = new IdentityCacheEntry(resourceNames.toArray(new String[resourceNames.size()])); abstractResourceCache.addToCache(cacheKey, cacheEntry); } } } else { resourceNames = findDescendantResources(parentResourceId, environmentId); } return resourceNames; }
@Override public void clearCache() { if (abstractResourceCache != null) { abstractResourceCache.clear(); } }