/**
    * 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.Serializable;
  import java.util.Arrays;
  
  import org.jclouds.io.ContentMetadata;
  import org.jclouds.io.ContentMetadataBuilder;
  
  /**
   * @author Adrian Cole
   */
  public class BaseImmutableContentMetadata implements ContentMetadata, Serializable {
  
     /** The serialVersionUID */
     private static final long serialVersionUID = -1445533440795766130L;
     protected String contentType;
     protected Long contentLength;
     protected byte[] contentMD5;
     protected String contentDisposition;
     protected String contentLanguage;
     protected String contentEncoding;
  
     public BaseImmutableContentMetadata(String contentType, Long contentLength, byte[] contentMD5,
              String contentDisposition, String contentLanguage, String contentEncoding) {
        this.contentType = contentType;
        this.contentLength = contentLength;
        this.contentMD5 = contentMD5;
        this.contentDisposition = contentDisposition;
        this.contentLanguage = contentLanguage;
        this.contentEncoding = contentEncoding;
     }
  
     /**
      * {@inheritDoc}
      */
     @Override
     public Long getContentLength() {
        return contentLength;
     }
  
     /**
      * {@inheritDoc}
      */
     @Override
     public byte[] getContentMD5() {
        if (contentMD5 != null) {
           byte[] retval = new byte[contentMD5.length];
           System.arraycopy(this.contentMD5, 0, retval, 0, contentMD5.length);
           return retval;
        } else {
           return null;
        }
     }
  
     /**
      * {@inheritDoc}
      */
     @Override
     public String getContentType() {
        return contentType;
     }
  
     /**
      * {@inheritDoc}
      */
     @Override
     public String getContentDisposition() {
        return this.contentDisposition;
     }
  
     /**
      * {@inheritDoc}
      */
     @Override
     public String getContentLanguage() {
        return this.contentLanguage;
     }
  
     /**
      * {@inheritDoc}
      */
    @Override
    public String getContentEncoding() {
       return this.contentEncoding;
    }
 
    @Override
    public String toString() {
       return "[contentType=" + contentType + ", contentLength=" + contentLength + ", contentDisposition="
                + contentDisposition + ", contentEncoding=" + contentEncoding + ", contentLanguage=" + contentLanguage
                + ", contentMD5=" + Arrays.toString(contentMD5) + "]";
    }
 
    @Override
    public int hashCode() {
       final int prime = 31;
       int result = 1;
       result = prime * result + ((contentDisposition == null) ? 0 : contentDisposition.hashCode());
       result = prime * result + ((contentEncoding == null) ? 0 : contentEncoding.hashCode());
       result = prime * result + ((contentLanguage == null) ? 0 : contentLanguage.hashCode());
       result = prime * result + ((contentLength == null) ? 0 : contentLength.hashCode());
       result = prime * result + Arrays.hashCode(contentMD5);
       result = prime * result + ((contentType == null) ? 0 : contentType.hashCode());
       return result;
    }
 
    @Override
    public boolean equals(Object obj) {
       if (this == obj)
          return true;
       if (obj == null)
          return false;
       if (getClass() != obj.getClass())
          return false;
       BaseImmutableContentMetadata other = (BaseImmutableContentMetadata) obj;
       if (contentDisposition == null) {
          if (other.contentDisposition != null)
             return false;
       } else if (!contentDisposition.equals(other.contentDisposition))
          return false;
       if (contentEncoding == null) {
          if (other.contentEncoding != null)
             return false;
       } else if (!contentEncoding.equals(other.contentEncoding))
          return false;
       if (contentLanguage == null) {
          if (other.contentLanguage != null)
             return false;
       } else if (!contentLanguage.equals(other.contentLanguage))
          return false;
       if (contentLength == null) {
          if (other.contentLength != null)
             return false;
       } else if (!contentLength.equals(other.contentLength))
          return false;
       if (!Arrays.equals(contentMD5, other.contentMD5))
          return false;
       if (contentType == null) {
          if (other.contentType != null)
             return false;
       } else if (!contentType.equals(other.contentType))
          return false;
       return true;
    }
 
    @Override
    public ContentMetadataBuilder toBuilder() {
       return ContentMetadataBuilder.fromContentMetadata(this);
    }
 
 }