content: /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.activemq.command;
  
  import java.io.DataInputStream;
  import java.io.DataOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.util.HashMap;
  import java.util.zip.DeflaterOutputStream;
  import java.util.zip.InflaterInputStream;
  
  import jakarta.jms.JMSException;
  import jakarta.jms.MessageNotWriteableException;
  import jakarta.jms.TextMessage;
  
  import org.apache.activemq.ActiveMQConnection;
  import org.apache.activemq.util.ByteArrayInputStream;
  import org.apache.activemq.util.ByteArrayOutputStream;
  import org.apache.activemq.util.ByteSequence;
  import org.apache.activemq.util.JMSExceptionSupport;
  import org.apache.activemq.util.MarshallingSupport;
  import org.apache.activemq.wireformat.WireFormat;
  
  /**
   * @openwire:marshaller code="28"
   *
   */
  public class ActiveMQTextMessage extends ActiveMQMessage implements TextMessage {
  
      public static final byte DATA_STRUCTURE_TYPE = CommandTypes.ACTIVEMQ_TEXT_MESSAGE;
  
      protected String text;
  
      @Override
      public Message copy() {
          ActiveMQTextMessage copy = new ActiveMQTextMessage();
          copy(copy);
          return copy;
      }
  
      private void copy(ActiveMQTextMessage copy) {
          super.copy(copy);
          copy.text = text;
      }
  
      @Override
      public byte getDataStructureType() {
          return DATA_STRUCTURE_TYPE;
      }
  
      @Override
      public String getJMSXMimeType() {
          return "jms/text-message";
      }
  
      @Override
      public void setText(String text) throws MessageNotWriteableException {
          checkReadOnlyBody();
          this.text = text;
          setContent(null);
      }
  
      @Override
      public String getText() throws JMSException {
          ByteSequence content = getContent();
  
          if (text == null && content != null) {
              text = decodeContent(content);
              setContent(null);
              setCompressed(false);
          }
          return text;
      }
  
      private String decodeContent(ByteSequence bodyAsBytes) throws JMSException {
          String text = null;
          if (bodyAsBytes != null) {
              InputStream is = null;
              try {
                  is = new ByteArrayInputStream(bodyAsBytes);
                  if (isCompressed()) {
                      is = new InflaterInputStream(is);
                  }
                  DataInputStream dataIn = new DataInputStream(is);
                  text = MarshallingSupport.readUTF8(dataIn);
                  dataIn.close();
              } catch (IOException ioe) {
                  throw JMSExceptionSupport.create(ioe);
              } finally {
                  if (is != null) {
                      try {
                          is.close();
                      } catch (IOException e) {
                          // ignore
                      }
                  }
              }
          }
          return text;
      }
  
      @Override
      public void beforeMarshall(WireFormat wireFormat) throws IOException {
          super.beforeMarshall(wireFormat);
          storeContentAndClear();
      }
  
      @Override
      public void storeContentAndClear() {
          storeContent();
          text=null;
      }
  
      @Override
      public void storeContent() {
          try {
              ByteSequence content = getContent();
              String text = this.text;
              if (content == null && text != null) {
                  ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
                  OutputStream os = bytesOut;
                  ActiveMQConnection connection = getConnection();
                  if (connection != null && connection.isUseCompression()) {
                      compressed = true;
                      os = new DeflaterOutputStream(os);
                  }
                  DataOutputStream dataOut = new DataOutputStream(os);
                  MarshallingSupport.writeUTF8(dataOut, text);
                  dataOut.close();
                  setContent(bytesOut.toByteSequence());
              }
          } catch (IOException e) {
              throw new RuntimeException(e);
          }
      }
  
      // see https://issues.apache.org/activemq/browse/AMQ-2103
      // and https://issues.apache.org/activemq/browse/AMQ-2966
      @Override
      public void clearUnMarshalledState() throws JMSException {
          super.clearUnMarshalledState();
          this.text = null;
      }
  
      @Override
      public boolean isContentMarshalled() {
          return content != null || text == null;
      }
  
      /**
       * Clears out the message body. Clearing a message's body does not clear its
       * header values or property entries. <p/>
       * <P>
       * If this message body was read-only, calling this method leaves the
       * message body in the same state as an empty body in a newly created
       * message.
       *
       * @throws JMSException if the JMS provider fails to clear the message body
       *                 due to some internal error.
       */
      @Override
      public void clearBody() throws JMSException {
          super.clearBody();
          this.text = null;
      }
  
      @Override
      public int getSize() {
          String text = this.text;
          if (size == 0 && content == null && text != null) {
              size = getMinimumMessageSize();
              if (marshalledProperties != null) {
                  size += marshalledProperties.getLength();
              }
              size += text.length() * 2;
          }
          return super.getSize();
      }
  
      @Override
      public String toString() {
          try {
              String text = this.text;
              if( text == null ) {
                  text = decodeContent(getContent());
              }
              if (text != null) {
                  text = MarshallingSupport.truncate64(text);
                  HashMap<String, Object> overrideFields = new HashMap<String, Object>();
                  overrideFields.put("text", text);
                  return super.toString(overrideFields);
              }
          } catch (JMSException e) {
          }
          return super.toString();
      }
  
      @SuppressWarnings("unchecked")
      public boolean isBodyAssignableTo(Class c) throws JMSException {
          /*
           * If null the JMS spec says this method always returns true
           * regardless of the passed in class type.
           */
          if (getText() == null) {
              return true;
          }
          return c.isAssignableFrom(java.lang.String.class);
      }
  
      @SuppressWarnings("unchecked")
      protected <T> T doGetBody(Class<T> asType) throws JMSException {
          return (T) getText();
      }
  }
  