mybatis-generator 插件扩展，序列化针对 实体类(model)、 example类

    MyBatis Generator生成DAO 的时候，生成的类都是没有序列化的，查看源码，Mybatis Generator 默认提供的是有序列化插件的，但是这个插件是仅仅针对model类生成的，针对 Example 类是没有这个插件扩展功能的；

    如果我们的环境是分布式环境开发的话，这个 Example 也是需要序列化的，故扩展这个插件，使他不仅仅针对model 类，同样针对 Example 类；

    http://git.oschina.net/alexgaoyh/MutiModule-parent/blob/master/MutiModule-common/src/main/java/com/MutiModule/common/mybatis/plugin/serializable/SerializablePlugin.java/?dir=0&filepath=MutiModule-common/src/main/java/com/MutiModule/common/mybatis/plugin/serializable/SerializablePlugin.java&oid=a36d7cc2d1d4ce40fa1ddffbfdc7653b7be7e2ae&sha=377ef54737b723905ff27aeaf6442503b82409a0

package com.MutiModule.common.mybatis.plugin.serializable;

import org.mybatis.generator.api.IntrospectedTable;  
import org.mybatis.generator.api.PluginAdapter;  
import org.mybatis.generator.api.dom.java.*;  
  
import java.util.List;  
import java.util.Properties;  

/**
 * 分布式开发的话，Example对象也必须要序列化
 * 扩展一个 mybatis generator 插件，用于不仅仅在生成的实体类 还有 *Example 类都序列化
 * @author alexgaoyh
 *
 */
public class SerializablePlugin extends PluginAdapter {  
  
    private FullyQualifiedJavaType serializable;  
    private FullyQualifiedJavaType gwtSerializable;  
    private boolean addGWTInterface;  
    private boolean suppressJavaInterface;  
  
    public SerializablePlugin() {  
        super();  
        serializable = new FullyQualifiedJavaType("java.io.Serializable"); //$NON-NLS-1$  
        gwtSerializable = new FullyQualifiedJavaType("com.google.gwt.user.client.rpc.IsSerializable"); //$NON-NLS-1$  
    }  
  
    public boolean validate(List<String> warnings) {  
        // this plugin is always valid  
        return true;  
    }  
  
    @Override  
    public void setProperties(Properties properties) {  
        super.setProperties(properties);  
        addGWTInterface = Boolean.valueOf(properties.getProperty("addGWTInterface")); //$NON-NLS-1$  
        suppressJavaInterface = Boolean.valueOf(properties.getProperty("suppressJavaInterface")); //$NON-NLS-1$  
    }  
  
    @Override  
    public boolean modelBaseRecordClassGenerated(TopLevelClass topLevelClass,  
                                                 IntrospectedTable introspectedTable) {  
        makeSerializable(topLevelClass, introspectedTable);  
        return true;  
    }  
  
    @Override  
    public boolean modelPrimaryKeyClassGenerated(TopLevelClass topLevelClass,  
                                                 IntrospectedTable introspectedTable) {  
        makeSerializable(topLevelClass, introspectedTable);  
        return true;  
    }  
  
    @Override  
    public boolean modelRecordWithBLOBsClassGenerated(  
            TopLevelClass topLevelClass, IntrospectedTable introspectedTable) {  
        makeSerializable(topLevelClass, introspectedTable);  
        return true;  
    }  
  
    /** 
     * 添加给Example类序列化的方法 
     * @param topLevelClass 
     * @param introspectedTable 
     * @return 
     */  
    @Override  
    public boolean modelExampleClassGenerated(TopLevelClass topLevelClass,IntrospectedTable introspectedTable){  
        makeSerializable(topLevelClass, introspectedTable);  
  
        for (InnerClass innerClass : topLevelClass.getInnerClasses()) {  
            if ("GeneratedCriteria".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$  
                innerClass.addSuperInterface(serializable);  
            }  
            if ("Criteria".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$  
                innerClass.addSuperInterface(serializable);  
            }  
            if ("Criterion".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$  
                innerClass.addSuperInterface(serializable);  
            }  
        }  
  
        return true;  
    }  
  
    protected void makeSerializable(TopLevelClass topLevelClass,  
                                    IntrospectedTable introspectedTable) {  
        if (addGWTInterface) {  
            topLevelClass.addImportedType(gwtSerializable);  
            topLevelClass.addSuperInterface(gwtSerializable);  
        }  
  
        if (!suppressJavaInterface) {  
            topLevelClass.addImportedType(serializable);  
            topLevelClass.addSuperInterface(serializable);  
  
            Field field = new Field();  
            field.setFinal(true);  
            field.setInitializationString("1L"); //$NON-NLS-1$  
            field.setName("serialVersionUID"); //$NON-NLS-1$  
            field.setStatic(true);  
            field.setType(new FullyQualifiedJavaType("long")); //$NON-NLS-1$  
            field.setVisibility(JavaVisibility.PRIVATE);  
            context.getCommentGenerator().addFieldComment(field, introspectedTable);  
  
            topLevelClass.addField(field);  
        }  
    }  
}