core/src/main/java/org/jclouds/io/payloads/StringPayload.java

/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds 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.jclouds.io.payloads;

import java.io.ByteArrayInputStream;
import java.io.InputStream;

import com.google.common.base.Charsets;

/**
 * This implementation converts the String to a byte array using UTF-8 encoding. If you wish to use
 * a different encoding, please use {@link ByteArrayPayload}.
 * 
 * @author Adrian Cole
 */
public class StringPayload extends BasePayload<String> {

   private final byte[] bytes;

   // it is possible to discover length by walking the string and updating current length based on
   // character code. However, this is process intense, and assumes an encoding type of UTF-8
   public StringPayload(String content) {
      super(content);
      this.bytes = content.getBytes(Charsets.UTF_8);
      getContentMetadata().setContentLength(new Long(bytes.length));
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public InputStream getInput() {
      return new ByteArrayInputStream(bytes);
   }

}