ca.uhn.fhir.util.ObjectUtil Maven / Gradle / Ivy
/*
* #%L
* HAPI FHIR - Core Library
* %%
* Copyright (C) 2014 - 2024 Smile CDR, Inc.
* %%
* 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.
* #L%
*/
package ca.uhn.fhir.util;
import ca.uhn.fhir.i18n.Msg;
import org.apache.commons.lang3.StringUtils;
import java.util.Objects;
import java.util.Optional;
public class ObjectUtil {
// hide
private ObjectUtil() {}
/**
* @deprecated Just use Objects.equals() instead;
*/
@Deprecated(since = "6.2")
public static boolean equals(Object object1, Object object2) {
return Objects.equals(object1, object2);
}
public static T requireNonNull(T obj, String message) {
if (obj == null) throw new NullPointerException(Msg.code(1776) + message);
return obj;
}
public static void requireNotEmpty(String str, String message) {
if (StringUtils.isBlank(str)) {
throw new IllegalArgumentException(Msg.code(1777) + message);
}
}
/**
* Cast the object to the type using Optional.
* Useful for streaming with flatMap.
* @param theObject any object
* @param theClass the class to check instanceof
* @return Optional present if theObject is of type theClass
*/
@SuppressWarnings("unchecked")
public static Optional castIfInstanceof(Object theObject, Class theClass) {
if (theClass.isInstance(theObject)) {
return Optional.of((T) theObject);
} else {
return Optional.empty();
}
}
}