/** Fetch the classloader for the given ApplicationID. */
static URLClassLoader getUrlClassLoader(ApplicationID appId, Map input) {
NCube cpCube = getCube(appId, CLASSPATH_CUBE);
if (cpCube
== null) { // No sys.classpath cube exists, just create regular GroovyClassLoader with no
// URLs set into it.
// Scope the GroovyClassLoader per ApplicationID
return getLocalClassloader(appId);
}
final String envLevel = SystemUtilities.getExternalVariable("ENV_LEVEL");
if (!input.containsKey("env")
&& StringUtilities.hasContent(
envLevel)) { // Add in the 'ENV_LEVEL" environment variable when looking up sys.* cubes,
// if there was not already an entry for it.
input.put("env", envLevel);
}
if (!input.containsKey("username")) { // same as ENV_LEVEL, add it in if not already there.
input.put("username", System.getProperty("user.name"));
}
Object urlCpLoader = cpCube.getCell(input);
if (urlCpLoader instanceof URLClassLoader) {
return (URLClassLoader) urlCpLoader;
}
throw new IllegalStateException(
"If the sys.classpath cube exists it must return a URLClassLoader.");
}
/**
* Fetch an n-cube by name from the given ApplicationID. If no n-cubes are loaded, then a
* loadCubes() call is performed and then the internal cache is checked again. If the cube is not
* found, null is returned.
*/
public static NCube getCube(ApplicationID appId, String name) {
validateAppId(appId);
NCube.validateCubeName(name);
Map<String, Object> cubes = getCacheForApp(appId);
final String lowerCubeName = name.toLowerCase();
if (cubes.containsKey(lowerCubeName)) { // pull from cache
final Object cube = cubes.get(lowerCubeName);
return Boolean.FALSE == cube ? null : ensureLoaded(cube);
}
// now even items with metaProperties(cache = 'false') can be retrieved
// and normal app processing doesn't do two queries anymore.
// used to do getCubeInfoRecords() -> dto
// and then dto -> loadCube(id)
NCube ncube = getPersister().loadCube(appId, name);
if (ncube == null) {
cubes.put(lowerCubeName, Boolean.FALSE);
return null;
}
return prepareCube(ncube);
}
