/** Save all engine elements that current in Cache to underlying data store */
public void save() throws DataAdapterException {
File policyFile = null;
try {
String schema = getPolicyDefaultSchema();
// Retrieve the schema file from given path or classpath, and verify if it exists.
schema = verifySchemaFile(schema);
PDP currentPDP = DataStoreHelper.getPDP(this);
CacheManager cacheMgr = CacheManager.getInstance(currentPDP);
AbstractPolicy[] allPolicies = cacheMgr.getAllPolicies();
for (int i = 0; i < allPolicies.length; i++) {
AbstractPolicy policy = allPolicies[i];
policyFile = policyFilesByID.get(policy.getId());
// If no existing file, this means the policy is new added, we create a new file for it.
if (policyFile == null) {
policyFile = new File(POLICY_FILE_PREFIX + policy.getId() + POLICY_FILE_SUFFIX);
}
// Dump the xml element to file. Note, we don't need clean up the directory.
dumpPolicy(policy, new FileOutputStream(policyFile));
}
} catch (Exception e) {
throw new DataAdapterException(
"Error occurs when saving policy file"
+ (policyFile == null ? "." : " : '" + policyFile.getName() + "'"),
e);
}
}
private static NodeList evaluateXPath(EvaluationContext ctx, String exp)
throws IndeterminateException {
try {
AbstractPolicy evaluatingPolicy = ctx.getCurrentEvaluatingPolicy();
if (evaluatingPolicy != null) {
isPolicyXPathVersionSupported(evaluatingPolicy);
NamespaceContextProvider nsCtx = new NamespaceContextProvider();
Map<String, String> nsMap = evaluatingPolicy.getPolicyNamespaceMappings();
Iterator<String> keys = nsMap.keySet().iterator();
while (keys.hasNext()) {
String key = keys.next();
nsCtx.addNSMapping(key, nsMap.get(key));
}
xpath.setNamespaceContext(nsCtx);
}
return (NodeList) xpath.evaluate(exp, ctx.getRequest().getRootNode(), XPathConstants.NODESET);
} catch (IndeterminateException intEx) {
throw intEx;
} catch (Exception ex) {
throw new IndeterminateException("Error occurs while evaluating XPath expression : " + exp);
}
}