Examples of com.ibm.commons.util.io.ByteStreamCache

com.ibm.commons.util.io.ByteStreamCache
Byte buffer.
This class is used to store bytes and provides both an OutputStream for storing the bytes and an InputStream for reading them. It stores the bytes in memory in a highly optimized way, with a possibility of using a backing file when the content is bigger than a predefined threshold.
@ibm-api

  }


  protected byte[] toByteArray(Object object) throws CredentialStoreException {
    try {
      if(object!=null) {
        ByteStreamCache bs = new ByteStreamCache(1024);
        ObjectOutputStream os = new ObjectOutputStream(bs.getOutputStream());
        try {
          os.writeObject(object);
          return bs.toByteArray();
        } finally {
          os.close();
        }
      }
      return null;

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    try {
      // When no length is specified, the HTTP client core forces Transfert-Encoding: chunked
      // The code bellow shows a workaround, although we should avoid that
      if(false) {
        if(length<0) {
          ByteStreamCache bs = new ByteStreamCache();
          bs.copyFrom(request.getInputStream());
          HttpEntity payloadEntity = new InputStreamEntity(bs.getInputStream(), bs.getLength());
          ((HttpEntityEnclosingRequest) method).setEntity(payloadEntity);
          return method;
        }
      }
      // Regular code

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        JarEntry entry = new JarEntry( entryName );
        entry.setMethod( ZipEntry.DEFLATED );
        
        CRC32 checksumCalculator= new CRC32();
        ByteStreamCache bsc = new ByteStreamCache();
        entry.setSize( StreamUtil.copyStream( is, bsc.getOutputStream() ));
        checksumCalculator.update( bsc.toByteArray() );
        entry.setCrc(checksumCalculator.getValue());
        
        jarOS.putNextEntry( entry );
        //Now that we have the correct size, we can copy it to the jar stream
        StreamUtil.copyStream( bsc.getInputStream(), jarOS );
        
        entriesSet.add( entryName );
    }

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  }
  
  private void emit(HttpServletResponse resp, String text, String contentType) throws IOException {
    resp.setStatus(200);
    resp.setContentType(contentType);
    ByteStreamCache bs = new ByteStreamCache();
    InputStream is = new ReaderInputStream(new StringReader(text),"utf-8");
    bs.copyFrom(is);
    resp.setContentLength((int)bs.getLength());
    OutputStream os = resp.getOutputStream();
    bs.copyTo(os);
    os.flush();
  }

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