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 */
017 package org.apache.camel.converter.jaxp;
018
019 import java.io.ByteArrayInputStream;
020 import java.io.Externalizable;
021 import java.io.IOException;
022 import java.io.InputStream;
023 import java.io.ObjectInput;
024 import java.io.ObjectOutput;
025 import java.io.Reader;
026 import java.io.StringReader;
027 import java.io.UnsupportedEncodingException;
028
029 import javax.xml.transform.stream.StreamSource;
030
031 import org.apache.camel.util.ObjectHelper;
032
033 /**
034 * A helper class which provides a JAXP {@link javax.xml.transform.Source Source} from a String which can
035 * be read as many times as required. Encoding is default UTF-8.
036 *
037 * @version $Revision: 740298 $
038 */
039 public class StringSource extends StreamSource implements Externalizable {
040 private String text;
041 private String encoding = "UTF-8";
042
043 public StringSource() {
044 }
045
046 public StringSource(String text) {
047 ObjectHelper.notNull(text, "text");
048 this.text = text;
049 }
050
051 public StringSource(String text, String systemId) {
052 this(text);
053 ObjectHelper.notNull(systemId, "systemId");
054 setSystemId(systemId);
055 }
056
057 public StringSource(String text, String systemId, String encoding) {
058 this(text, systemId);
059 ObjectHelper.notNull(encoding, "encoding");
060 this.encoding = encoding;
061 }
062
063 public InputStream getInputStream() {
064 try {
065 return new ByteArrayInputStream(text.getBytes(encoding));
066 } catch (UnsupportedEncodingException e) {
067 throw new RuntimeException(e);
068 }
069 }
070
071 public Reader getReader() {
072 return new StringReader(text);
073 }
074
075 public String toString() {
076 return "StringSource[" + text + "]";
077 }
078
079 public String getText() {
080 return text;
081 }
082
083 public String getEncoding() {
084 return encoding;
085 }
086
087 public void writeExternal(ObjectOutput out) throws IOException {
088 int b = (text != null ? 0x01 : 0x00) + (encoding != null ? 0x02 : 0x00)
089 + (getPublicId() != null ? 0x04 : 0x00) + (getSystemId() != null ? 0x08 : 0x00);
090 out.writeByte(b);
091 if ((b & 0x01) != 0) {
092 out.writeUTF(text);
093 }
094 if ((b & 0x02) != 0) {
095 out.writeUTF(encoding);
096 }
097 if ((b & 0x04) != 0) {
098 out.writeUTF(getPublicId());
099 }
100 if ((b & 0x08) != 0) {
101 out.writeUTF(getSystemId());
102 }
103 }
104
105 public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
106 int b = in.readByte();
107 if ((b & 0x01) != 0) {
108 text = in.readUTF();
109 }
110 if ((b & 0x02) != 0) {
111 encoding = in.readUTF();
112 }
113 if ((b & 0x04) != 0) {
114 setPublicId(in.readUTF());
115 }
116 if ((b & 0x08) != 0) {
117 setSystemId(in.readUTF());
118 }
119 }
120 }