Java Object NVL isEmpty(Object value)

Description

Check that value wasn't set by json parser.

License

Open Source License

Parameter

Parameter	Description
value	- value to check

Return

- true if value is useless for factory (0 for primitives or empty collection or map), false otherwise

Declaration

static boolean isEmpty(Object value) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2012-2015 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors://from ww  w.j  a v a  2 s.c o m
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/

import java.util.*;

public class Main {
    /**
     * Check that value wasn't set by json parser.
     *
     * @param value
     *         - value to check
     * @return - true if value is useless for factory (0 for primitives or empty collection or map), false otherwise
     */
    static boolean isEmpty(Object value) {
        return (null == value) || (value.getClass().equals(Boolean.class) && !((Boolean) value))
                || (value.getClass().equals(Integer.class) && (Integer) value == 0)
                || (value.getClass().equals(Long.class) && (Long) value == 0)
                || (Collection.class.isAssignableFrom(value.getClass()) && ((Collection) value).isEmpty())
                || (Map.class.isAssignableFrom(value.getClass()) && ((Map) value).isEmpty())
                || (value.getClass().equals(Byte.class) && (Byte) value == 0)
                || (value.getClass().equals(Short.class) && (Short) value == 0)
                || (value.getClass().equals(Double.class) && (Double) value == 0)
                || (value.getClass().equals(Float.class) && (Float) value == 0);
    }
}

Related

1. isEmpty(Object obj)
2. isEmpty(Object... obj)
3. isNotEmpty(Object object)
4. isNullOrEmpty(final Object obj)
5. isNullOrEmpty(Object object, boolean zeroEqualsEmpty)