Examples of java.util.zip.Adler32.update()

java.util.zip.Adler32.update()
Updates checksum with specified byte. @param b an array of bytes

        {
            //store the signature as a checksum
            final byte[] bytes = sigString.getBytes();
            
            final Checksum checksum = new Adler32(); // much faster than CRC32, almost as reliable
            checksum.update(bytes, 0, bytes.length);
            chksum = new Long(checksum.getValue());
            
           // debug("COMPUTE   CRC32: " + chksum + "\t--> " + unit.getSource().getNameForReporting());
        }
        return chksum;

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        header.putInt(blkId) ;
        header.flip() ;
        channel.write(header) ;
        
        Adler32 adler = new Adler32() ;
        adler.update(header.array()) ;


        if ( len > 0 )
        {
            // Make buffer include it's full length.
            // [TxDEV:TODO] This is the full buffer, junk and all.

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            for ( int i = len ; i < bufferCapacity ; i++ )
                buffer.put(i, (byte)0) ;
            
            // Write all bytes
            channel.write(buffer) ;
            adler.update(buffer.array()) ;
            
            buffer.position(bufferPosition) ;
            buffer.limit(bufferLimit) ;
        }

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        int len     = header.getInt() ;
        int ref     = header.getInt() ;
        int blockId = header.getInt() ;
        
        Adler32 adler = new Adler32() ;
        adler.update(header.array()) ;


        JournalEntryType type = JournalEntryType.type(typeId) ;
        FileRef fileRef = FileRef.get(ref) ;
        ByteBuffer bb = ByteBuffer.allocate(len) ;
        lenRead = channel.read(bb) ;

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        JournalEntryType type = JournalEntryType.type(typeId) ;
        FileRef fileRef = FileRef.get(ref) ;
        ByteBuffer bb = ByteBuffer.allocate(len) ;
        lenRead = channel.read(bb) ;
        adler.update(bb.array()) ;
        bb.rewind() ;
        // checksum
        crcTrailer.clear() ;
        lenRead = channel.read(crcTrailer) ;
        if ( lenRead != SizeofCRC )

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            byte data[] = new byte[size];
            reader.readFully(offset+BATCH_CONTROL_RECORD_SIZE, data);


            Checksum checksum = new Adler32();
            checksum.update(data, 0, data.length);


            if( expectedChecksum!=checksum.getValue() ) {
                return -1;
            }

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                buff.reset();
                buff.skip(5+Journal.BATCH_CONTROL_RECORD_MAGIC.length);
                buff.writeInt(sequence.getLength()-Journal.BATCH_CONTROL_RECORD_SIZE);
                if( journal.isChecksum() ) {
                  Checksum checksum = new Adler32();
                  checksum.update(sequence.getData(), sequence.getOffset()+Journal.BATCH_CONTROL_RECORD_SIZE, sequence.getLength()-Journal.BATCH_CONTROL_RECORD_SIZE);
                  buff.writeLong(checksum.getValue());
                }


                // Now do the 1 big write.
                file.seek(wb.offset);

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                // factor in this case since we know
                // our write batches are going to much larger.
                Checksum checksum = new Adler32();
                for (PageWrite w : batch) {
                    try {
                        checksum.update(w.diskBound, 0, pageSize);
                    } catch (Throwable t) {
                        throw IOExceptionSupport.create(
                                "Cannot create recovery file. Reason: " + t, t);
                    }
                }

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                byte []data = new byte[pageSize];
                if( recoveryFile.read(data, 0, pageSize) != pageSize ) {
                    // Invalid recovery record, Could not fully read the data". Probably due to a partial write to the recovery buffer
                    return nextTxId;
                }
                checksum.update(data, 0, pageSize);
                batch.put(offset, data);
            }
        } catch (Exception e) {
            // If an error occurred it was cause the redo buffer was not full written out correctly.. so don't redo it. 
            // as the pages should still be consistent.

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            if (isChecksum()) {
                long expectedChecksum = buffer.getLong();
                byte data[] = new byte[buffer.remaining()];
                Checksum checksum = new Adler32();
                buffer.get(data);
                checksum.update(data, 0, data.length);
                if (expectedChecksum != checksum.getValue()) {
                    throw new IOException("Bad checksum for location: " + location);
                }
            }
            Location next = goToNextLocation(location, Location.BATCH_CONTROL_RECORD_TYPE, true);

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