001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.camel.runtimecatalog; 018 019public class CollectionStringBuffer { 020 private final StringBuilder buffer = new StringBuilder(); 021 private String separator; 022 private boolean first = true; 023 024 public CollectionStringBuffer() { 025 this(", "); 026 } 027 028 public CollectionStringBuffer(String separator) { 029 this.separator = separator; 030 } 031 032 @Override 033 public String toString() { 034 return buffer.toString(); 035 } 036 037 public void append(Object value) { 038 if (first) { 039 first = false; 040 } else { 041 buffer.append(separator); 042 } 043 buffer.append(value); 044 } 045 046 public String getSeparator() { 047 return separator; 048 } 049 050 public void setSeparator(String separator) { 051 this.separator = separator; 052 } 053 054 public boolean isEmpty() { 055 return first; 056 } 057}