com.azure.cosmos.implementation.apachecommons.lang.ObjectUtils Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
/*
* Portions Copyright (c) Microsoft Corporation
*/
package com.azure.cosmos.implementation.apachecommons.lang;
public class ObjectUtils {
/**
* {@code ObjectUtils} instances should NOT be constructed in
* standard programming. Instead, the static methods on the class should
* be used, such as {@code ObjectUtils.defaultIfNull("a","b");}.
*
* This constructor is public to permit tools that require a JavaBean
* instance to operate.
*/
private ObjectUtils() {
super();
}
/**
* Returns a default value if the object passed is {@code null}.
*
*
* ObjectUtils.defaultIfNull(null, null) = null
* ObjectUtils.defaultIfNull(null, "") = ""
* ObjectUtils.defaultIfNull(null, "zz") = "zz"
* ObjectUtils.defaultIfNull("abc", *) = "abc"
* ObjectUtils.defaultIfNull(Boolean.TRUE, *) = Boolean.TRUE
*
*
* @param the type of the object
* @param object the {@code Object} to test, may be {@code null}
* @param defaultValue the default value to return, may be {@code null}
* @return {@code object} if it is not {@code null}, defaultValue otherwise
*/
public static T defaultIfNull(final T object, final T defaultValue) {
return object != null ? object : defaultValue;
}
/**
* Compares two objects for inequality, where either one or both
* objects may be {@code null}.
*
*
* ObjectUtils.notEqual(null, null) = false
* ObjectUtils.notEqual(null, "") = true
* ObjectUtils.notEqual("", null) = true
* ObjectUtils.notEqual("", "") = false
* ObjectUtils.notEqual(Boolean.TRUE, null) = true
* ObjectUtils.notEqual(Boolean.TRUE, "true") = true
* ObjectUtils.notEqual(Boolean.TRUE, Boolean.TRUE) = false
* ObjectUtils.notEqual(Boolean.TRUE, Boolean.FALSE) = true
*
*
* @param object1 the first object, may be {@code null}
* @param object2 the second object, may be {@code null}
* @return {@code false} if the values of both objects are the same
*/
public static boolean notEqual(final Object object1, final Object object2) {
return !equals(object1, object2);
}
/**
* Compares two objects for equality, where either one or both
* objects may be {@code null}.
*
*
* ObjectUtils.equals(null, null) = true
* ObjectUtils.equals(null, "") = false
* ObjectUtils.equals("", null) = false
* ObjectUtils.equals("", "") = true
* ObjectUtils.equals(Boolean.TRUE, null) = false
* ObjectUtils.equals(Boolean.TRUE, "true") = false
* ObjectUtils.equals(Boolean.TRUE, Boolean.TRUE) = true
* ObjectUtils.equals(Boolean.TRUE, Boolean.FALSE) = false
*
*
* @param object1 the first object, may be {@code null}
* @param object2 the second object, may be {@code null}
* @return {@code true} if the values of both objects are the same
* @deprecated this method has been replaced by {@code java.util.Objects.equals(Object, Object)} in Java 7 and will
* be removed from future releases.
*/
@Deprecated
private static boolean equals(final Object object1, final Object object2) {
if (object1 == object2) {
return true;
}
if (object1 == null || object2 == null) {
return false;
}
return object1.equals(object2);
}
}