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package com.tmsps.ne4spring.orm;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

import com.tmsps.ne4spring.annotation.Column;
import com.tmsps.ne4spring.annotation.NotMap;
import com.tmsps.ne4spring.annotation.PK;
import com.tmsps.ne4spring.annotation.Table;
import com.tmsps.ne4spring.orm.model.DataModel;
import com.tmsps.ne4spring.utils.ChkUtil;

/**
 * 
 * @author zhangwei [email protected]
 *
 */
public class ClassUtil {
	@SuppressWarnings({ "rawtypes", "unchecked" })
	public static String getClassName(Class clazz) {
		if (!clazz.isAnnotationPresent(Table.class)) {
			return clazz.getSimpleName().toString();
		} else if (!"".equals(((Table) clazz.getAnnotation(Table.class)).value().toString())) {
			return ((Table) clazz.getAnnotation(Table.class)).value().toString();
		} else if ("".equals(((Table) clazz.getAnnotation(Table.class)).TableName().toString())) {
			return clazz.getSimpleName().toString();
		} else {
			return ((Table) clazz.getAnnotation(Table.class)).TableName().toString();
		}
	}

	
	public static String getTableName(Class clazz){
		if (!clazz.isAnnotationPresent(Table.class)) {
			return clazz.getSimpleName().toString();
		} else if (!"".equals(((Table) clazz.getAnnotation(Table.class)).value().toString())) {
			return ((Table) clazz.getAnnotation(Table.class)).value().toString();
		} else if ("".equals(((Table) clazz.getAnnotation(Table.class)).TableName().toString())) {
			return clazz.getSimpleName().toString();
		} else {
			return ((Table) clazz.getAnnotation(Table.class)).TableName().toString();
		}
	}
	
	public static List getPropertyName(Class clazz) {
		List list = new ArrayList();
		List fields = getClassFields(clazz);
		for (Field field : fields) {
			if (field.isAnnotationPresent((Class) NotMap.class)) {
				continue;
			}
			if (field.isAnnotationPresent((Class) Column.class)) {
				list.add(field.getAnnotation(Column.class).name());
				continue;
			}
			if(field.isSynthetic()) {//如果类中字段为合成字段，剔除。
				continue;
			}
			list.add(field.getName());
		}
		return list;
	}

	public static List getClassFields(Class clazz) {
		List clazzField = new ArrayList();
		Field[] fields = clazz.getDeclaredFields();
		for (Field field : fields) {
			if (field.isAnnotationPresent(NotMap.class)) {
				continue;
			}
			if(field.isSynthetic()) {//如果类中字段为合成字段，剔除。
				continue;
			}
			clazzField.add(field);
		} // #for
		return clazzField;
	}

	public static List getValuesPar(Object obj) {
		List list = new ArrayList();
		List fields = getClassFields(obj.getClass());
		for (Field field : fields) {
			if (field.isAnnotationPresent(NotMap.class)) {
				continue;
			}
			if(field.isSynthetic()) {//如果类中字段为合成字段，剔除。
				continue;
			}
			boolean acc = field.isAccessible();
			field.setAccessible(true);
			try {
				Object value = field.get(obj);
				list.add(value);
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				field.setAccessible(acc);
			}
		} // for end
		return list;
	}

	/**
	 * 获取Modelbean 属性名称和属性值MAP author zhangwei 2015年10月12日 下午5:26:10
	 */
	public static LinkedHashMap getClassKeyVal(final Object obj) {
		LinkedHashMap classMap = new LinkedHashMap();
		List fields = getClassFields(obj.getClass());
		for (Field field : fields) {
			if (field.isAnnotationPresent(NotMap.class)) {
				continue;
			}
			if(field.isSynthetic()) {//如果类中字段为合成字段，剔除。
				continue;
			}
			boolean acc = field.isAccessible();
			field.setAccessible(true);
			try {// name and value
				classMap.put(field.getName(), field.get(obj));
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				field.setAccessible(acc);
			}
		} // for end
		return classMap;
	}
	
	/**
	 * 获取Modelbean 属性名称和属性值MAP author zhangwei 2015年10月12日 下午5:26:10
	 */
	public static LinkedHashMap getClassKeyValWithoutPk(final Object obj) {
		LinkedHashMap classMap = new LinkedHashMap();
		List fields = getClassFields(obj.getClass());
		for (Field field : fields) {
			if (field.isAnnotationPresent(NotMap.class)) {
				continue;
			}
			if (field.isAnnotationPresent(PK.class)) {
				continue;
			}
			boolean acc = field.isAccessible();
			field.setAccessible(true);
			try {// name and value
				classMap.put(field.getName(), field.get(obj));
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				field.setAccessible(acc);
			}
		} // for end
		return classMap;
	}

	/**
	 * 除去bean中为null的属性 author zhangwei 2015年10月12日 下午7:12:00
	 */
	public static LinkedHashMap getClassKeyValNotNull(final Object obj) {
		LinkedHashMap classMap = getClassKeyVal(obj);
		Iterator> entries = classMap.entrySet().iterator();
		while (entries.hasNext()) {
			Map.Entry entry = entries.next();
			if (entry.getValue() == null) {
				entries.remove();
			}
		}
		return classMap;
	}
	
	//DataModel里的PK和所有不为空的属性
	public static LinkedHashMap getClassKeyValNotNullAndPK(final Object obj){
		LinkedHashMap classMap = new LinkedHashMap();
		List fields = getClassFields(obj.getClass());
		for (Field field : fields) {
			if (field.isAnnotationPresent(NotMap.class)) {
				continue;
			}
			if(field.isSynthetic()) {//如果类中字段为合成字段，剔除。
				continue;
			}
			boolean acc = field.isAccessible();
			field.setAccessible(true);
			try {// name and value
				if(field.isAnnotationPresent(PK.class)){//如果为PK
					classMap.put(field.getName(), field.get(obj));
				}else if(ChkUtil.isNotNull(field.get(obj))){
					classMap.put(field.getName(), field.get(obj));
				}
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				field.setAccessible(acc);
			}
		} // for end
		return classMap;
	}
	
	//将Map中的Key转换成List
	public static List getKeyList(final Map map){
		Set keys = map.keySet();
		return new ArrayList(keys);
	}
	
	//将Map中的values转换为List
	public static List getValList(final Map map){
		return new ArrayList(map.values());
	}
	

	//find Pk from Class if not have @pk return 1st
	public static Field getIdField(Class clazz) {
		Field id = null;
		Field[] fields = clazz.getDeclaredFields();
		for (Field field : fields) {
			if (field.isAnnotationPresent((Class) PK.class)) {
				id = field;
				break;
			}
		} // #for

		if (id == null) {// 如果没有PK映射，则返回第一个字段为主键,该字段不能为NotMap注解
			for (Field field : fields) {
				if (!field.isAnnotationPresent(NotMap.class)) {
					id = field;
					break;
				}
			} // #for
		}
		return id;
	}// #getIdField

	public static Object getClassVal(Field field, Object obj) {
		boolean acc = field.isAccessible();
		field.setAccessible(true);
		try {
			return field.get(obj);
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		} finally {
			field.setAccessible(acc);
		}
	}

	public static void setClassVal(Field field, Object obj, Object val) {
		boolean acc = field.isAccessible();
		field.setAccessible(true);
		try {
			field.set(obj, val);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			field.setAccessible(acc);
		}
	}
}
    

    

    

            

    

            



    
    






    
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