/**
* Internal method for loading a model from the given xml document
*
* @param xmlDoc
* @param rootPath
* @return
*/
private SparkModel load(Document xmlDoc, File rootPath) throws Exception {
SparkModel model = null;
ClassLoader classLoader = null;
ArrayList<Node> nodes;
Node root = xmlDoc.getFirstChild();
Node node;
if (root == null) throw new Exception("No root node in the xml document");
root = XmlDocUtils.getChildByTagName(root, "model");
if (root == null) throw new Exception("No model node in the xml document");
/* Load class path */
classLoader = setupClassPath(rootPath);
/* Load main model class */
nodes = XmlDocUtils.getChildrenByTagName(root, "setup");
if (nodes.size() != 1) throw new Exception("The model class must be uniquely specified");
node = nodes.get(0);
String setupName = node.getTextContent().trim();
if (classLoader != null) {
model = (SparkModel) classLoader.loadClass(setupName).newInstance();
} else {
model = (SparkModel) Class.forName(setupName).newInstance();
}
startConstruction(model);
/* Load basic parameters */
loadBasicModelParameters(root);
/* Load agents */
loadAgents(root, classLoader);
/* Load variables */
loadVariables(model, root);
/* Load methods */
loadMethods(model, root);
return model;
}
