package com.srv4pos.commons.io;
   
   import com.srv4pos.server.api.infrastructure.ConnectionWriter;
   
   import java.io.IOException;
   import java.io.InputStream;
   import java.io.OutputStream;
   
   /**
  * Implementation of {@link com.srv4pos.server.api.infrastructure.ConnectionWriter} which write data from {@link java.io.InputStream}.
  * <p>User: Kirill, Date: 23.08.13 14:51</p>
  */
  public class InputStreamConnectionWriter implements ConnectionWriter {
      private InputStream inputStream;
  
      /**
       * Set the source of data.
       * @param inputStream the source stream
       */
      public InputStreamConnectionWriter(InputStream inputStream) {
          this.inputStream = inputStream;
      }
  
      /**
       * Write data.
       * @param outputStream the target stream for write
       * @throws IOException if an I/O error occurs
       */
      public void write(OutputStream outputStream) throws IOException {
          IOUtils.copy(inputStream, outputStream);
      }
  
      /**
       * Get length of content. We cannot define it for stream.
       * @return null
       */
      public Integer getContentLength() {
          return null;
      }
  }