jp.tricreo.codegenerator.service.impl.CodeGenStrategyForVelocity.java Source code

Introduction

Here is the source code for jp.tricreo.codegenerator.service.impl.CodeGenStrategyForVelocity.java

Source

/*
 * Copyright 2010 TRICREO, Inc. (http://tricreo.jp/)
 *
 * 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 jp.tricreo.codegenerator.service.impl;

import java.io.File;
import java.io.FileWriter;
import java.util.Properties;

import jp.tricreo.codegenerator.CodeGenContext;
import jp.tricreo.codegenerator.model.ClassMetaModel;
import jp.tricreo.codegenerator.service.CodeGenStrategy;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.Validate;
import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.Velocity;
import org.apache.velocity.tools.generic.DisplayTool;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Velocity????{@link CodeGenStrategy}?
 * 
 * @author j5ik2o
 */
public class CodeGenStrategyForVelocity extends AbstractCodeGenStrategy {

    private static final Logger LOGGER = LoggerFactory.getLogger(CodeGenStrategyForVelocity.class);

    private static final String TEMPLATE_FILENAME = "java.vm";

    private static final String TEMPLATE_FILE_ENCODING = "UTF-8";

    private static final String GENERATE_FILE_EXT = "java";

    @Override
    public void generate(CodeGenContext context) throws CodeGenException {
        Validate.notNull(context);
        File templateDirFile = context.getTemplateDir();
        Properties properties = new Properties();
        properties.setProperty("file.resource.loader.path", templateDirFile.getPath());
        try {
            Velocity.init(properties);
            Template template = Velocity.getTemplate(TEMPLATE_FILENAME, TEMPLATE_FILE_ENCODING);
            DisplayTool displayTool = new DisplayTool();
            for (ClassMetaModel classMetaModel : context.getClassMetaModels()) {
                FileWriter fw = null;
                try {
                    VelocityContext velocityContext = new VelocityContext();
                    velocityContext.put("displayTool", displayTool);
                    velocityContext.put("classMetaModel", classMetaModel);

                    File exportClassDir = getExportClassDir(context, classMetaModel);
                    exportClassDir.mkdirs();

                    fw = new FileWriter(
                            new File(exportClassDir, classMetaModel.getClassName() + "." + GENERATE_FILE_EXT));
                    template.merge(velocityContext, fw);
                    fw.flush();
                    LOGGER.info("????? : {}", classMetaModel.getClassName());
                } catch (Exception e) {
                    throw new CodeGenException(e);
                } finally {
                    IOUtils.closeQuietly(fw);
                }
            }
        } catch (Exception ex) {
            throw new CodeGenException(ex);
        }
    }
}