Metacat

	                    ObjectFormat format = null;

	                    try {

	                    	format = ObjectFormatCache.getInstance().getFormat(dataDocMimeType);

	                    } catch (NotFound e) {

							System.out.println(e.getMessage());

						}

	                    dataDocIs = stringToStream(dataDocText);

	                    Checksum checksum = ChecksumUtil.checksum(dataDocIs, "MD5");

	                    dataDocSysMeta.setChecksum(checksum);