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Panda Core is the core module of Panda Framework, it contains commonly used utility classes similar to apache-commons.

There is a newer version: 1.8.0

package panda.dao.query;

import panda.lang.Strings;


/**
 * Constants of logic operator.
 * 
 */
public enum Operator {
	IS_NULL {
		public String toString() {
			return "IS NULL";
		}
	},
	/**
	 * "IS NOT NULL";
	 */
	IS_NOT_NULL {
		public String toString() {
			return "IS NOT NULL";
		}
	},
	/**
	 * EQUAL = "=";
	 */
	EQUAL {
		public String toString() {
			return "=";
		}
	},
	/**
	 * NOT_EQUAL = "!=";
	 */
	NOT_EQUAL {
		public String toString() {
			return "!=";
		}
	},
	/**
	 * GREATER_THAN = ">";
	 */
	GREATER_THAN {
		public String toString() {
			return ">";
		}
	},
	/**
	 * GREATER_EQUAL = ">=";
	 */
	GREATER_EQUAL {
		public String toString() {
			return ">=";
		}
	},
	/**
	 * LESS_THAN = "<";
	 */
	LESS_THAN {
		public String toString() {
			return "<";
		}
	},
	/**
	 * LESS_EQUAL = "<=";
	 */
	LESS_EQUAL {
		public String toString() {
			return "<=";
		}
	},
	/**
	 * IN = "IN";
	 */
	IN,
	/**
	 * NOT_IN = "NOT IN";
	 */
	NOT_IN {
		public String toString() {
			return "NOT IN";
		}
	},
	/**
	 * BETWEEN = "BETWEEN";
	 */
	BETWEEN,
	/**
	 * NOT_BETWEEN = "NOT BETWEEN";
	 */
	NOT_BETWEEN {
		public String toString() {
			return "NOT BETWEEN";
		}
	},
	/**
	 * LIKE = "LIKE";
	 */
	LIKE,
	/**
	 * NOT_LIKE = "NOT LIKE";
	 */
	NOT_LIKE {
		public String toString() {
			return "NOT LIKE";
		}
	},
	/**
	 * CONTAINS = "~~";
	 */
	CONTAINS {
		public String toString() {
			return "~~";
		}
	},
	/**
	 * NOT_CONTAINS = "!~~";
	 */
	NOT_CONTAINS {
		public String toString() {
			return "!~~";
		}
	},
	/**
	 * STARTS_WITH = "^=";
	 */
	STARTS_WITH {
		public String toString() {
			return "^=";
		}
	},
	/**
	 * NOT_STARTS_WITH = "!^=";
	 */
	NOT_STARTS_WITH {
		public String toString() {
			return "!^=";
		}
	},
	/**
	 * ENDS_WITH = "=$";
	 */
	ENDS_WITH {
		public String toString() {
			return "=$";
		}
	},
	/**
	 * NOT_ENDS_WITH = "!=$";
	 */
	NOT_ENDS_WITH {
		public String toString() {
			return "!=$";
		}
	};
	
	public static Operator parse(String op) {
		op = Strings.upperCase(op);
		return Operator.valueOf(op);
	}
}