org.smallmind.wicket.model.freemarker.FreeMarkerModel.java Source code

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Here is the source code for org.smallmind.wicket.model.freemarker.FreeMarkerModel.java

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/*
 * Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 David Berkman
 * 
 * This file is part of the SmallMind Code Project.
 * 
 * The SmallMind Code Project is free software, you can redistribute
 * it and/or modify it under the terms of GNU Affero General Public
 * License as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 * 
 * The SmallMind Code Project is distributed in the hope that it will
 * be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the the GNU Affero General Public
 * License, along with the SmallMind Code Project. If not, see
 * <http://www.gnu.org/licenses/>.
 * 
 * Additional permission under the GNU Affero GPL version 3 section 7
 * ------------------------------------------------------------------
 * If you modify this Program, or any covered work, by linking or
 * combining it with other code, such other code is not for that reason
 * alone subject to any of the requirements of the GNU Affero GPL
 * version 3.
 */
package org.smallmind.wicket.model.freemarker;

import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.Map;
import freemarker.template.Configuration;
import freemarker.template.Template;
import org.apache.wicket.model.AbstractReadOnlyModel;

public class FreeMarkerModel extends AbstractReadOnlyModel<String> {

    private static final Configuration FREEMARKER_CONF;

    public Template template;
    public Map<String, Object> rootMap;

    public FreeMarkerModel(String templateText, Map<String, Object> rootMap) throws IOException {

        this.rootMap = rootMap;

        template = new Template(null, new StringReader(templateText), FREEMARKER_CONF);
    }

    static {

        FREEMARKER_CONF = new Configuration();
        FREEMARKER_CONF.setTagSyntax(freemarker.template.Configuration.SQUARE_BRACKET_TAG_SYNTAX);
    }

    @Override
    public String getObject() {

        StringWriter templateWriter = new StringWriter();

        try {
            template.process(rootMap, templateWriter);
        } catch (Exception exception) {
            throw new RuntimeException(exception);
        }

        return templateWriter.toString();
    }
}