private static GroovyObject lookupCachedTagLib(
GrailsWebRequest webRequest,
TagLibraryLookup gspTagLibraryLookup,
String namespace,
String tagName) {
if (webRequest != null) {
// caches the taglibs in request context. is this a good idea or not?
String tagKey = namespace + ":" + tagName;
Map<String, GroovyObject> tagLibCache =
(Map<String, GroovyObject>)
webRequest.getCurrentRequest().getAttribute(REQUEST_TAGLIB_CACHE);
GroovyObject tagLib = null;
if (tagLibCache == null) {
tagLibCache = new HashMap<String, GroovyObject>();
webRequest.getCurrentRequest().setAttribute(REQUEST_TAGLIB_CACHE, tagLibCache);
} else {
tagLib = tagLibCache.get(tagKey);
}
if (tagLib == null) {
tagLib = gspTagLibraryLookup.lookupTagLibrary(namespace, tagName);
if (tagLib != null) {
tagLibCache.put(tagKey, tagLib);
}
}
return tagLib;
} else {
return gspTagLibraryLookup != null
? gspTagLibraryLookup.lookupTagLibrary(namespace, tagName)
: null;
}
}
/**
* Method missing implementation that handles tag invocation by method name
*
* @param instance The instance
* @param methodName The method name
* @param argsObject The arguments
* @return The result
*/
public Object methodMissing(Object instance, String methodName, Object argsObject) {
Object[] args =
argsObject instanceof Object[] ? (Object[]) argsObject : new Object[] {argsObject};
TagLibraryLookup lookup = getTagLibraryLookup();
if (lookup != null) {
GroovyObject tagLibrary = lookup.lookupTagLibrary(GroovyPage.DEFAULT_NAMESPACE, methodName);
if (tagLibrary != null) {
if (!developmentMode) {
MetaClass controllerMc = GrailsMetaClassUtils.getMetaClass(instance);
WebMetaUtils.registerMethodMissingForTags(
controllerMc, lookup, GroovyPage.DEFAULT_NAMESPACE, methodName);
}
List<MetaMethod> respondsTo =
tagLibrary.getMetaClass().respondsTo(tagLibrary, methodName, args);
if (respondsTo.size() > 0) {
return respondsTo.get(0).invoke(tagLibrary, args);
}
}
}
throw new MissingMethodException(methodName, instance.getClass(), args);
}