/**
    * Copyright By Grandsoft Company Limited.  
    * 2012-7-5 下午07:37:57
    */
   package gboat2.base.core.util.json;
   
   import gboat2.base.core.web.EnumType;
   
   import java.lang.reflect.Method;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import net.sf.json.JSONObject;
  import net.sf.json.JsonConfig;
  import net.sf.json.processors.JsonValueProcessor;
  
  
  /**
   * 处理 JSON 字符串中枚举类型属性值的解析器
   * @author lysming
   * @since 1.0
   * @date 2012-7-5
   */
  public class GboatJsonEnumValueProcessor implements JsonValueProcessor {
      private final Logger logger = LoggerFactory.getLogger(GboatJsonEnumValueProcessor.class);
      
  	/**
  	 * {@inheritDoc}   
  	 * @see net.sf.json.processors.JsonValueProcessor#processArrayValue(java.lang.Object, net.sf.json.JsonConfig) 
  	 */
  	@Override
  	public Object processArrayValue(Object value, JsonConfig jsonConfig) {
  		return null;
  	}
  
  	/**
  	 * {@inheritDoc}   
  	 * @see net.sf.json.processors.JsonValueProcessor#processObjectValue(java.lang.String, java.lang.Object, net.sf.json.JsonConfig) 
  	 */
  	@Override
  	public Object processObjectValue(String key, Object value, JsonConfig jsonConfig) {
  		if(value instanceof Enum){
  			Enum<?> e = (Enum<?>)value;
  			String desc = e.name();
  			try {
  				Method m = e.getClass().getMethod("getDesc");
  				if(m!=null){
  					desc = (String) m.invoke(e);
  				}
  			} catch (Exception e1) {
  			    logger.error("解析 JSON 串中的枚举类型值失败：key=[{}], value=[{}]", key, value);
  			    logger.error("", e);
  			} 
  			EnumType en = new EnumType(e.name(),e.ordinal(),desc);
  			return JSONObject.fromObject(en);
  		}
  		
  		return null;
  	}
  
  }