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.util;
018
019/**
020 * A little helper class for converting a collection of values to a (usually comma separated) string.
021 *
022 * @deprecated use JDK {@link String#join(CharSequence, CharSequence...)} or {@link java.util.StringJoiner}.
023 */
024@Deprecated
025public class CollectionStringBuffer {
026    private final StringBuilder buffer = new StringBuilder();
027    private String separator;
028    private boolean first = true;
029
030    public CollectionStringBuffer() {
031        this(", ");
032    }
033
034    public CollectionStringBuffer(String separator) {
035        this.separator = separator;
036    }
037
038    @Override
039    public String toString() {
040        return buffer.toString();
041    }
042
043    public void append(Object value) {
044        if (first) {
045            first = false;
046        } else {
047            buffer.append(separator);
048        }
049        buffer.append(value);
050    }
051
052    public String getSeparator() {
053        return separator;
054    }
055
056    public void setSeparator(String separator) {
057        this.separator = separator;
058    }
059
060    public boolean isEmpty() {
061        return first;
062    }
063}