/*
* Copyright (C) 2011-2013 Mojavemvc.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.mojavemvc.views;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;
import org.mojavemvc.initialization.AppProperties;
/**
* @author Luis Antunes
*/
public class VM extends DataModelView<VM> {
public static final String CONFIG_PROPERTY = "mojavemvc-internal-vm-config";
private final String templateName;
public VM(String templateName) {
if (templateName == null || templateName.trim().length() == 0) {
throw new IllegalArgumentException("template name cannot be empty");
}
this.templateName = templateName;
}
@Override
public void render(HttpServletRequest request, HttpServletResponse response,
AppProperties properties)
throws ServletException, IOException {
VelocityEngine engine = (VelocityEngine)properties.getProperty(CONFIG_PROPERTY);
Template template = engine.getTemplate(templateName);
try {
template.merge(new VelocityContext(attributes), response.getWriter());
} catch (Exception e) {
throw new RuntimeException("error processing template : " + templateName, e);
}
}
}