001package org.hl7.fhir.utilities;
002
003/*
004 * #%L
005 * HAPI FHIR - Core Library
006 * %%
007 * Copyright (C) 2014 - 2017 University Health Network
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 * 
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 * 
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023
024/**
025 * Encapsulates StringBuilder to build strings of values separated by comma
026 * @author Ewout
027 */
028
029public class CommaSeparatedStringBuilder {
030
031  boolean first = true;
032  String sep = ", ";
033  StringBuilder b = new StringBuilder();
034
035  public CommaSeparatedStringBuilder() {
036  }
037  
038  public CommaSeparatedStringBuilder(String sep) {
039    this.sep = sep;
040  }
041
042  public void append(String value) {
043    if (!first)
044      b.append(sep);
045    b.append(value);
046    first = false;    
047    
048  }
049  
050  @Override
051  public String toString() {
052    return b.toString();
053  }
054}