org.retrostore.ui.JspUtils.java Source code

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Here is the source code for org.retrostore.ui.JspUtils.java

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/*
 * Copyright 2016, Sascha Hberling
 *
 * 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.retrostore.ui;

import com.google.common.base.Preconditions;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * Utilities for serving HTML/JSP data.
 */
public class JspUtils {
    public static void writeResponse(ServletContext context, HttpServletRequest request,
            HttpServletResponse response, String path, TemplateModel model) throws ServletException, IOException {
        Preconditions.checkNotNull(context, "Context necessary");
        Preconditions.checkNotNull(request, "RequestData necessary");
        Preconditions.checkNotNull(response, "Response necessary");
        Preconditions.checkNotNull(path, "Path necessary");

        if (model == null) {
            model = new TemplateModel();
        }
        request.setAttribute("model", model.getData());
        context.getRequestDispatcher(path).forward(request, response);
    }
}