ca.uhn.fhir.util.ElementUtil 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 ca.uhn.fhir.model.api.ICompositeElement;
import ca.uhn.fhir.model.api.IElement;
import org.hl7.fhir.instance.model.api.IBase;
import java.util.ArrayList;
import java.util.List;
public class ElementUtil {
@SuppressWarnings("unchecked")
public static boolean isEmpty(Object... theElements) {
if (theElements == null) {
return true;
}
for (int i = 0; i < theElements.length; i++) {
Object next = theElements[i];
if (next instanceof List) {
if (!isEmpty((List) next)) {
return false;
}
} else if (next instanceof String && (!((String) next).isEmpty())) {
return false;
} else if (next != null && !((IBase) next).isEmpty()) {
return false;
}
}
return true;
}
public static boolean isEmpty(IBase... theElements) {
if (theElements == null) {
return true;
}
for (int i = 0; i < theElements.length; i++) {
IBase next = theElements[i];
if (next != null && !next.isEmpty()) {
return false;
}
}
return true;
}
public static boolean isEmpty(IElement... theElements) {
if (theElements == null) {
return true;
}
for (int i = 0; i < theElements.length; i++) {
IBase next = theElements[i];
if (next != null && !next.isEmpty()) {
return false;
}
}
return true;
}
public static boolean isEmpty(List theElements) {
if (theElements == null) {
return true;
}
for (int i = 0; i < theElements.size(); i++) {
IBase next;
try {
next = theElements.get(i);
} catch (ClassCastException e) {
List elements = theElements;
String s = "Found instance of " + elements.get(i).getClass()
+ " - Did you set a field value to the incorrect type? Expected " + IBase.class.getName();
throw new ClassCastException(Msg.code(1748) + s);
}
if (next != null && !next.isEmpty()) {
return false;
}
}
return true;
}
/**
* Note that this method does not work on HL7.org structures
*/
public static List allPopulatedChildElements(Class theType, Object... theElements) {
ArrayList retVal = new ArrayList();
for (Object next : theElements) {
if (next == null) {
continue;
} else if (next instanceof IElement) {
addElement(retVal, (IElement) next, theType);
} else if (next instanceof List) {
for (Object nextElement : ((List) next)) {
if (!(nextElement instanceof IBase)) {
throw new IllegalArgumentException(
Msg.code(1749) + "Found element of " + nextElement.getClass());
}
addElement(retVal, (IElement) nextElement, theType);
}
} else {
throw new IllegalArgumentException(Msg.code(1750) + "Found element of " + next.getClass());
}
}
return retVal;
}
// @SuppressWarnings("unchecked")
private static void addElement(ArrayList retVal, IElement next, Class theType) {
if (theType != null && theType.isAssignableFrom(next.getClass())) {
retVal.add(theType.cast(next));
}
if (next instanceof ICompositeElement) {
ICompositeElement iCompositeElement = (ICompositeElement) next;
// TODO: Use of a deprecated method should be resolved.
retVal.addAll(iCompositeElement.getAllPopulatedChildElementsOfType(theType));
}
}
}