/**
* AbstractGenerator.java
* 2012-3-3 上午12:49:06
*/
package xgenerator.generators;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.HashMap;
import java.util.Map;
import xgenerator.model.ModelMetadata;
import freemarker.template.Configuration;
import freemarker.template.Template;
/**
* <p>
* Title:类的中文名
* </p>
* <p>
* Description:具体功能见各方法描述
* </p>
* <p>
* Copyright:Copyright (c) 2012
* </p>
*
* @author <a href="mailto:lishushan@gmail.com">liss</a>
* @version 1.0
*/
public abstract class AbstractGenerator implements Generator {
/**
* 默认模板文件目录
*/
public static final String DEFAULT_TEMPLATES_DIR = System.getProperty("user.dir") + File.separator + "templates";
/**
* freemarker template Configuration;
*/
public static final Configuration CONFIG = new Configuration();
/**
* static init
*/
static {
try {
CONFIG.setDirectoryForTemplateLoading(new File(DEFAULT_TEMPLATES_DIR));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
/**
* <p>
* Title：生成代码文件，提供给子类用来生成代码文件
* </p>
* @param modelMetadata
* @param templateFile
* @param codeFilePath
* @param codeFileName
*/
protected String generateCode(ModelMetadata modelMetadata, String templateFile, String codeFilePath, String codeFileName) {
try {
/*
* 创建数据模型
*/
Map root = new HashMap();
root.put("modelMetadata", modelMetadata);
/*
* 使用Configuration实例来加载指定模板
*/
Template template = CONFIG.getTemplate(templateFile);
template.setEncoding(modelMetadata.getEncoding());
/*
* 代码目录与文件
*/
File fileDir = new File(codeFilePath);
if(!fileDir.exists()) {
fileDir.mkdirs();
}
File codeFile = new File(codeFilePath + File.separator + codeFileName);
System.out.println("generate file " + codeFile);
FileOutputStream fos = new FileOutputStream(codeFile);
OutputStreamWriter out = new OutputStreamWriter(fos, modelMetadata.getEncoding());
BufferedWriter bw = new BufferedWriter(out);
/*
* 合并处理数据与模型
*/
template.process(root, bw);
bw.flush();
bw.close();
return codeFile.getAbsolutePath();
} catch (Exception e) {
//throw new RuntimeException("generate " + codeFileName + " failure！", e);
throw new RuntimeException(e.getMessage(), e);
}
}
}