mybatis OGNL扩展

须放在编译类路径下的扩展类

package com.core.dao;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.collections.MapUtils;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;

import java.util.Collection;
import java.util.Date;
import java.util.Map;

/**
 * @description mybatis ognl表达式扩展
 * @author: goa
 * @date: 2016/1/8 18:55
 * @version: v2.2.0
 */
public class Ognl {
	/**
	 * 使用ognl扩展
	 * 该功能为，根据传入的值，
	 * 如果值为0，则 ... 。
	 * 如果值为1，则 ... 。
	 *
	 * @return
	 */
	public static boolean isSolve(Object o, String soleState) {
		if (o == null) {
			return false;
		}
		String str = null;
		if (o instanceof String[]) {
			String[] objects = (String[]) o;
			str = objects[0];
		} else if (o instanceof Character) {
			Character c = (Character) o;
			str = Character.toString(c);
		} else if (o instanceof String) {
			String s = (String) o;
			str = s;
		}
		if (soleState.equals(str)) {
			return true;
		} else {
			return false;
		}

	}

	/**
	 * 可以用于判断 Map,Collection,String,Array是否为空
	 *
	 * @param o
	 * @return
	 */
	@SuppressWarnings("unchecked")
	public static boolean isEmpty(Object o) throws IllegalArgumentException {
		if (o == null)
			return true;
		if (o instanceof String) {
			return StringUtils.isEmpty((String) o);
		} else if (o instanceof Collection) {
			return CollectionUtils.isEmpty((Collection) o);
		} else if (o.getClass().isArray()) {
			return ArrayUtils.isEmpty((Object[]) o);
		} else if (o instanceof Map) {
			MapUtils.isEmpty((Map) o);
		} else if (o instanceof Date) {
			return o == null;
		} else if (o instanceof Number) {
			return o == null;
		} else if (o instanceof Boolean) {
			return o == null;
		} else {
			throw new IllegalArgumentException("Illegal argument type,must be : Map,Collection,Array,String. but was:"
					+ o.getClass());
		}

		return false;
	}

	/**
	 * 可以用于判断 Map,Collection,String,Array是否不为空
	 *
	 * @param o
	 * @return
	 */
	public static boolean isNotEmpty(Object o) {
		return !isEmpty(o);
	}

	public static boolean isNotEmpty(Object... objects) {
		if (objects == null)
			return false;
		for (Object obj : objects) {
			if (isEmpty(obj)) {
				return false;
			}
			;
		}
		return true;
	}

	public static boolean isNotBlank(Object o) {
		return !isBlank(o);
	}

	public static boolean isBlank(Object o) {
		return StringUtils.isBlank((String) o);
	}

	public static boolean isBlank(String str) {
		return StringUtils.isBlank(str);
	}
}

如这样使用： 

 <if test="@com.core.dao.Ognl@isSolve(type,1)"> AND T.N_STATUS=2</if>