net.sourceforge.mavenhippo.gen.FreemarkerUtils.java Source code

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Here is the source code for net.sourceforge.mavenhippo.gen.FreemarkerUtils.java

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/*
 *    Copyright 2013 Ebrahim Aharpour
 *
 *   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.
 *   
 *   Partially sponsored by Smile B.V
 */
package net.sourceforge.mavenhippo.gen;

import java.io.IOException;
import java.io.StringWriter;
import java.util.Map;

import net.sourceforge.mavenhippo.utils.exceptions.FreemarkerUtilsExceptoin;

import org.apache.commons.lang3.StringUtils;

import freemarker.cache.ClassTemplateLoader;
import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateException;

/**
 * @author Ebrahim Aharpour
 * 
 */
public final class FreemarkerUtils {

    private FreemarkerUtils() {
    }

    public static Template getTemplate(String path, Class<?> classLoaderOfClass) {
        try {
            Template result;
            Configuration configuration = new Configuration();
            ClassTemplateLoader templateLoader = new ClassTemplateLoader(classLoaderOfClass, "/");
            configuration.setTemplateLoader(templateLoader);
            result = configuration.getTemplate(path);
            return result;
        } catch (IOException e) {
            throw new FreemarkerUtilsExceptoin(e.getMessage(), e);
        }
    }

    public static String renderTemplate(String templatePath, Map<String, Object> model, Class<?> classLoaderOfClass)
            throws TemplateException, IOException {
        if (StringUtils.isBlank(templatePath) || model == null) {
            throw new IllegalArgumentException("both templatePath and model are required.");
        }
        Template tempalte = FreemarkerUtils.getTemplate(templatePath, classLoaderOfClass);
        StringWriter stringWriter = new StringWriter();
        tempalte.process(model, stringWriter);
        return stringWriter.toString();
    }
}