package ca.uhn.fhir.util;
/*
* #%L
* HAPI FHIR - Core Library
* %%
* Copyright (C) 2014 - 2017 University Health Network
* %%
* 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%
*/
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.hl7.fhir.instance.model.api.IPrimitiveType;
import ca.uhn.fhir.model.primitive.StringDt;
public class DatatypeUtil {
/**
* Convert a list of FHIR String objects to a set of native java Strings
*/
public static Set<String> toStringSet(List<StringDt> theStringList) {
HashSet<String> retVal = new HashSet<String>();
if (theStringList != null) {
for (StringDt string : theStringList) {
if (string != null && string.getValue()!=null) {
retVal.add(string.getValue());
}
}
}
return retVal;
}
/**
* Joins a list of strings with a single space (' ') between each string
*/
public static String joinStringsSpaceSeparated(List<? extends IPrimitiveType<String>> theStrings) {
StringBuilder b = new StringBuilder();
for (IPrimitiveType<String> next : theStrings) {
if (next.isEmpty()) {
continue;
}
if (b.length() > 0) {
b.append(' ');
}
b.append(next.getValue());
}
return b.toString();
}
}