com.viiyue.plugins.mybatis.template.function.BlankFunction Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of mybatis-mapper Show documentation

Mybatis generic mapper plugin for solving most basic operations, simplifying sql syntax and improving dynamic execution efficiency

There is a newer version: 1.3.7

Show newest version

/**
 * Copyright (C) 2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.viiyue.plugins.mybatis.template.function;

import com.viiyue.plugins.mybatis.template.TemplateEngine;
import com.viiyue.plugins.mybatis.utils.ObjectUtil;

/**
 * 
 * Fel-engine extended null/blank judgment function, used to determine whether 
 * the given value is null or whether the text is blank.
 *
 * 

 * isBlank(null) - true
 * 
isBlank("") - true
 * 
isBlank("  ") - true
 * 
isBlank("\t\n\s") - true
 * 
isBlank(*) - false
 * 
 *
 * @author tangxbai
 * @since 1.0.0
 * @see TemplateEngine
 */
public class BlankFunction extends AbstractFunction {

	public BlankFunction() {
		super( 1 );
	}

	@Override
	public String getName() {
		return "isBlank";
	}

	@Override
	public Object invoke( Object target ) {
		return ObjectUtil.isBlank( target );
	}

}