serverside/org.eclipse.epsilon.egl.servlet/src/org/eclipse/epsilon/egl/servlet/SessionModelManager.txt

package org.eclipse.epsilon.egl.servlet;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;

import javax.servlet.ServletContext;

import org.eclipse.epsilon.commons.util.StringProperties;
import org.eclipse.epsilon.emc.emf.EmfModel;
import org.eclipse.epsilon.eol.exceptions.models.EolModelLoadingException;
import org.eclipse.epsilon.eol.models.IModel;
import org.eclipse.epsilon.eol.models.ModelRepository;

public class SessionModelManager {
	
	protected HashMap<String, Collection<IModel>> sessionModelsMap = new HashMap<String, Collection<IModel>>();
	protected String currentSessionId;
	protected ServletContext servletContext;
	protected ModelRepository currentModelRepository;
	
	public void setCurrentModelRepository(ModelRepository currentModelRepository) {
		this.currentModelRepository = currentModelRepository;
	}
	
	public ModelRepository getCurrentModelRepository() {
		return currentModelRepository;
	}
	
	public void setServletContext(ServletContext servletContext) {
		this.servletContext = servletContext;
	}
	
	public ServletContext getServletContext() {
		return servletContext;
	}

	
	public void setCurrentSessionId(String currentSessionId) {
		this.currentSessionId = currentSessionId;
	}
	
	public String getCurrentSessionId() {
		return currentSessionId;
	}
	
	public void loadModel(String name, String aliases, String modelFile, String metamodelFile) throws EolModelLoadingException {
		
		EmfModel model = new EmfModel();
		
		StringProperties properties = new StringProperties();
		properties.put(EmfModel.PROPERTY_NAME, name);
		properties.put(EmfModel.PROPERTY_ALIASES, aliases);
		properties.put(EmfModel.PROPERTY_MODEL_FILE, this.getServletContext().getRealPath(modelFile));
		properties.put(EmfModel.PROPERTY_METAMODEL_FILE, this.getServletContext().getRealPath(metamodelFile));
		properties.put(EmfModel.PROPERTY_IS_METAMODEL_FILE_BASED, "true");
		properties.put(EmfModel.PROPERTY_READONLOAD, "true");
		properties.put(EmfModel.PROPERTY_STOREONDISPOSAL, "false");
		model.load(properties, null);
		//getSessionModels().add(model);
		getCurrentModelRepository().addModel(model);
		
	}
	
	public void loadModel(String name, String modelFile, String metamodelFile) throws EolModelLoadingException {
		loadModel(name, "", modelFile, metamodelFile);
	}	
	
	public IModel getSessionModel(String name) {
		for (IModel model : getSessionModels()) {
			if (model.getName().equals(name)) {
				return model;
			}
		}
		return null;
	}
	
	public Collection<IModel> getSessionModels() {
		Collection<IModel> sessionModels = sessionModelsMap.get(currentSessionId);
		if (sessionModels == null) {
			sessionModels = new ArrayList<IModel>();
			sessionModelsMap.put(currentSessionId, sessionModels);
		}
		return sessionModels;
	}
	
}