Beispiel #1
0
 /**
  * Create a BLOB value from a stream.
  *
  * @param in the input stream
  * @param length the number of characters to read, or -1 for no limit
  * @param handler the data handler
  * @return the lob value
  */
 private static ValueLob createBlob(InputStream in, long length, DataHandler handler) {
   try {
     if (handler == null) {
       byte[] data = IOUtils.readBytesAndClose(in, (int) length);
       return createSmallLob(Value.BLOB, data);
     }
     long remaining = Long.MAX_VALUE;
     boolean compress = handler.getLobCompressionAlgorithm(Value.BLOB) != null;
     if (length >= 0 && length < remaining) {
       remaining = length;
     }
     int len = getBufferSize(handler, compress, remaining);
     byte[] buff;
     if (len >= Integer.MAX_VALUE) {
       buff = IOUtils.readBytesAndClose(in, -1);
       len = buff.length;
     } else {
       buff = DataUtils.newBytes(len);
       len = IOUtils.readFully(in, buff, len);
     }
     if (len <= handler.getMaxLengthInplaceLob()) {
       byte[] small = DataUtils.newBytes(len);
       System.arraycopy(buff, 0, small, 0, len);
       return ValueLob.createSmallLob(Value.BLOB, small);
     }
     ValueLob lob = new ValueLob(Value.BLOB, null);
     lob.createFromStream(buff, len, in, remaining, handler);
     return lob;
   } catch (IOException e) {
     throw DbException.convertIOException(e, null);
   }
 }
Beispiel #2
0
 /**
  * Create a CLOB value from a stream.
  *
  * @param in the reader
  * @param length the number of characters to read, or -1 for no limit
  * @param handler the data handler
  * @return the lob value
  */
 private static ValueLob createClob(Reader in, long length, DataHandler handler) {
   try {
     if (handler == null) {
       String s = IOUtils.readStringAndClose(in, (int) length);
       return createSmallLob(Value.CLOB, s.getBytes(Constants.UTF8));
     }
     boolean compress = handler.getLobCompressionAlgorithm(Value.CLOB) != null;
     long remaining = Long.MAX_VALUE;
     if (length >= 0 && length < remaining) {
       remaining = length;
     }
     int len = getBufferSize(handler, compress, remaining);
     char[] buff;
     if (len >= Integer.MAX_VALUE) {
       String data = IOUtils.readStringAndClose(in, -1);
       buff = data.toCharArray();
       len = buff.length;
     } else {
       buff = new char[len];
       len = IOUtils.readFully(in, buff, len);
     }
     if (len <= handler.getMaxLengthInplaceLob()) {
       byte[] small = new String(buff, 0, len).getBytes(Constants.UTF8);
       return ValueLob.createSmallLob(Value.CLOB, small);
     }
     ValueLob lob = new ValueLob(Value.CLOB, null);
     lob.createFromReader(buff, len, in, remaining, handler);
     return lob;
   } catch (IOException e) {
     throw DbException.convertIOException(e, null);
   }
 }
Beispiel #3
0
 private void createFromStream(byte[] buff, int len, InputStream in, long remaining, DataHandler h)
     throws IOException {
   FileStoreOutputStream out = initLarge(h);
   boolean compress = h.getLobCompressionAlgorithm(Value.BLOB) != null;
   try {
     while (true) {
       precision += len;
       out.write(buff, 0, len);
       remaining -= len;
       if (remaining <= 0) {
         break;
       }
       len = getBufferSize(h, compress, remaining);
       len = IOUtils.readFully(in, buff, len);
       if (len <= 0) {
         break;
       }
     }
   } finally {
     out.close();
   }
 }
Beispiel #4
0
 private void createFromReader(char[] buff, int len, Reader in, long remaining, DataHandler h)
     throws IOException {
   FileStoreOutputStream out = initLarge(h);
   boolean compress = h.getLobCompressionAlgorithm(Value.CLOB) != null;
   try {
     while (true) {
       precision += len;
       byte[] b = new String(buff, 0, len).getBytes(Constants.UTF8);
       out.write(b, 0, b.length);
       remaining -= len;
       if (remaining <= 0) {
         break;
       }
       len = getBufferSize(h, compress, remaining);
       len = IOUtils.readFully(in, buff, len);
       if (len == 0) {
         break;
       }
     }
   } finally {
     out.close();
   }
 }