/**
* Looks for a policy node at the specified contextual location for the specified object.
*
* <p>If a policy node that contains the object name is not found, a search is also done for the
* default policy for all objects, with a special name ('*').
*
* @param xpathContext The XPath context around the agent configuration XML document
* @param currentPointer A pointer to a particular node in the document to start searching from,
* such as a <code><zone></code>, <code><template></code>, or <code><agent>
* </code> node.
* @param policyPath The subPath, such as "requestPolicy"
* @param objectName
* @return
*/
private Element findPolicy(
JXPathContext xpathContext, Pointer currentPointer, String policyPath, String objectName) {
if (currentPointer != null && currentPointer.getNode() != null) {
String objectPolicyPath =
"policy/" + policyPath + "/object[contains(@name,'" + objectName + "')]";
JXPathContext zoneContext = xpathContext.getRelativeContext(currentPointer);
Element zonePolicy = (Element) zoneContext.selectSingleNode(objectPolicyPath);
if (zonePolicy != null) {
return zonePolicy;
}
// Look for default policy for all objects at the zone level
zonePolicy =
(Element) zoneContext.selectSingleNode("policy/" + policyPath + "/object[@name='*']");
if (zonePolicy != null) {
return zonePolicy;
}
}
return null;
}
/** 根据给定的xpath查询Page对象 */
private Page searchPageWithXpath(Object o, String... xpaths) {
JXPathContext context = JXPathContext.newContext(o);
Object result;
for (String xpath : xpaths) {
try {
result = context.selectSingleNode(xpath);
} catch (Exception e) {
continue;
}
if (result instanceof Page) {
return (Page) result;
}
}
return null;
}