question: compares two checksums . concode_field_sep int BYTE_ARRAY_SIZE concode_elem_sep BitstreamInfoDAO bitstreamInfoDAO concode_elem_sep ChecksumResultsCollector collector concode_elem_sep ChecksumHistoryDAO checksumHistoryDAO concode_elem_sep BitstreamDispatcher dispatcher concode_elem_sep BitstreamDAO bitstreamDAO concode_elem_sep Date processStartDate concode_elem_sep Logger LOG concode_elem_sep boolean reportVerbose concode_elem_sep String DEFAULT_DIGEST_ALGORITHM concode_field_sep void process concode_elem_sep void setProcessStartDate concode_elem_sep BitstreamInfo checkBitstream concode_elem_sep ChecksumResultsCollector getCollector concode_elem_sep BitstreamDispatcher getDispatcher concode_elem_sep void processBitstream concode_elem_sep void setCollector concode_elem_sep Date getProcessStartDate concode_elem_sep String digestStream concode_elem_sep void setDispatcher concode_elem_sep boolean isReportVerbose concode_elem_sep void processNullInfoBitstream concode_elem_sep void processDeletedBitstream concode_elem_sep void setReportVerbose
target: String function ( String arg0 , String arg1 ) { String loc0 = ChecksumCheckResults . CHECKSUM_NO_MATCH ; if ( ( arg0 == null ) || ( arg1 == null ) ) { loc0 = ChecksumCheckResults . CHECKSUM_PREV_NOT_FOUND ; } else if ( arg0 . equals ( arg1 ) ) { loc0 = ChecksumCheckResults . CHECKSUM_MATCH ; } return loc0 ; }