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}