org.h2.mvstore.DataUtils.getFletcher32 java code examples

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private void myMethod () {
 StringBuilder s =new StringBuilder()
new StringBuilder(32)
String str;new StringBuilder(str)
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}

private void writeStoreHeader() {
  StringBuilder buff = new StringBuilder(112);
  if (lastChunk != null) {
    storeHeader.put("block", lastChunk.block);
    storeHeader.put("chunk", lastChunk.id);
    storeHeader.put("version", lastChunk.version);
  }
  DataUtils.appendMap(buff, storeHeader);
  byte[] bytes = buff.toString().getBytes(StandardCharsets.ISO_8859_1);
  int checksum = DataUtils.getFletcher32(bytes, 0, bytes.length);
  DataUtils.appendMap(buff, "fletcher", checksum);
  buff.append('\n');
  bytes = buff.toString().getBytes(StandardCharsets.ISO_8859_1);
  ByteBuffer header = ByteBuffer.allocate(2 * BLOCK_SIZE);
  header.put(bytes);
  header.position(BLOCK_SIZE);
  header.put(bytes);
  header.rewind();
  write(0, header);
}

byte[] getFooterBytes() {
  StringBuilder buff = new StringBuilder(FOOTER_LENGTH);
  DataUtils.appendMap(buff, "chunk", id);
  DataUtils.appendMap(buff, "block", block);
  DataUtils.appendMap(buff, "version", version);
  byte[] bytes = buff.toString().getBytes(StandardCharsets.ISO_8859_1);
  int checksum = DataUtils.getFletcher32(bytes, 0, bytes.length);
  DataUtils.appendMap(buff, "fletcher", checksum);
  while (buff.length() < FOOTER_LENGTH - 1) {
    buff.append(' ');
  }
  buff.append('\n');
  return buff.toString().getBytes(StandardCharsets.ISO_8859_1);
}

parseMapValue(buff, s, i + 1, size);
int check = (int) Long.parseLong(buff.toString(), 16);
if (check == getFletcher32(bytes, start, startKey - 1)) {
  return map;

byte[] getFooterBytes() {
  StringBuilder buff = new StringBuilder();
  DataUtils.appendMap(buff, "chunk", id);
  DataUtils.appendMap(buff, "block", block);
  DataUtils.appendMap(buff, "version", version);
  byte[] bytes = buff.toString().getBytes(DataUtils.LATIN);
  int checksum = DataUtils.getFletcher32(bytes, bytes.length);
  DataUtils.appendMap(buff, "fletcher", checksum);
  while (buff.length() < Chunk.FOOTER_LENGTH - 1) {
    buff.append(' ');
  }
  buff.append("\n");
  return buff.toString().getBytes(DataUtils.LATIN);
}

byte[] getFooterBytes() {
  StringBuilder buff = new StringBuilder();
  DataUtils.appendMap(buff, "chunk", id);
  DataUtils.appendMap(buff, "block", block);
  DataUtils.appendMap(buff, "version", version);
  byte[] bytes = buff.toString().getBytes(DataUtils.LATIN);
  int checksum = DataUtils.getFletcher32(bytes, bytes.length);
  DataUtils.appendMap(buff, "fletcher", checksum);
  while (buff.length() < Chunk.FOOTER_LENGTH - 1) {
    buff.append(' ');
  }
  buff.append("\n");
  return buff.toString().getBytes(DataUtils.LATIN);
}

byte[] getFooterBytes() {
  StringBuilder buff = new StringBuilder(FOOTER_LENGTH);
  DataUtils.appendMap(buff, "chunk", id);
  DataUtils.appendMap(buff, "block", block);
  DataUtils.appendMap(buff, "version", version);
  byte[] bytes = buff.toString().getBytes(StandardCharsets.ISO_8859_1);
  int checksum = DataUtils.getFletcher32(bytes, 0, bytes.length);
  DataUtils.appendMap(buff, "fletcher", checksum);
  while (buff.length() < FOOTER_LENGTH - 1) {
    buff.append(' ');
  }
  buff.append('\n');
  return buff.toString().getBytes(StandardCharsets.ISO_8859_1);
}

private void writeStoreHeader() {
  StringBuilder buff = new StringBuilder(112);
  if (lastChunk != null) {
    storeHeader.put("block", lastChunk.block);
    storeHeader.put("chunk", lastChunk.id);
    storeHeader.put("version", lastChunk.version);
  }
  DataUtils.appendMap(buff, storeHeader);
  byte[] bytes = buff.toString().getBytes(StandardCharsets.ISO_8859_1);
  int checksum = DataUtils.getFletcher32(bytes, 0, bytes.length);
  DataUtils.appendMap(buff, "fletcher", checksum);
  buff.append('\n');
  bytes = buff.toString().getBytes(StandardCharsets.ISO_8859_1);
  ByteBuffer header = ByteBuffer.allocate(2 * BLOCK_SIZE);
  header.put(bytes);
  header.position(BLOCK_SIZE);
  header.put(bytes);
  header.rewind();
  write(0, header);
}

private void writeStoreHeader() {
  StringBuilder buff = new StringBuilder();
  if (lastChunk != null) {
    storeHeader.put("block", lastChunk.block);
    storeHeader.put("chunk", lastChunk.id);
    storeHeader.put("version", lastChunk.version);
  }
  DataUtils.appendMap(buff, storeHeader);
  byte[] bytes = buff.toString().getBytes(DataUtils.LATIN);
  int checksum = DataUtils.getFletcher32(bytes, bytes.length);
  DataUtils.appendMap(buff, "fletcher", checksum);
  buff.append("\n");
  bytes = buff.toString().getBytes(DataUtils.LATIN);
  ByteBuffer header = ByteBuffer.allocate(2 * BLOCK_SIZE);
  header.put(bytes);
  header.position(BLOCK_SIZE);
  header.put(bytes);
  header.rewind();
  write(0, header);
}

private void writeStoreHeader() {
  StringBuilder buff = new StringBuilder();
  if (lastChunk != null) {
    storeHeader.put("block", lastChunk.block);
    storeHeader.put("chunk", lastChunk.id);
    storeHeader.put("version", lastChunk.version);
  }
  DataUtils.appendMap(buff, storeHeader);
  byte[] bytes = buff.toString().getBytes(DataUtils.LATIN);
  int checksum = DataUtils.getFletcher32(bytes, bytes.length);
  DataUtils.appendMap(buff, "fletcher", checksum);
  buff.append("\n");
  bytes = buff.toString().getBytes(DataUtils.LATIN);
  ByteBuffer header = ByteBuffer.allocate(2 * BLOCK_SIZE);
  header.put(bytes);
  header.position(BLOCK_SIZE);
  header.put(bytes);
  header.rewind();
  write(0, header);
}

parseMapValue(buff, s, i + 1, size);
int check = (int) Long.parseLong(buff.toString(), 16);
if (check == getFletcher32(bytes, start, startKey - 1)) {
  return map;

s = s.substring(0, s.lastIndexOf("fletcher") - 1);
byte[] bytes = s.getBytes(DataUtils.LATIN);
int checksum = DataUtils.getFletcher32(bytes, bytes.length);
if (check == checksum) {
  int chunk = DataUtils.readHexInt(m, "chunk", 0);

s = s.substring(0, s.lastIndexOf("fletcher") - 1);
byte[] bytes = s.getBytes(DataUtils.LATIN);
int checksum = DataUtils.getFletcher32(bytes, bytes.length);
if (check == checksum) {
  int chunk = DataUtils.readHexInt(m, "chunk", 0);

s = s.substring(0, s.lastIndexOf("fletcher") - 1);
byte[] bytes = s.getBytes(DataUtils.LATIN);
int checksum = DataUtils.getFletcher32(bytes,
    bytes.length);
if (check != checksum) {

s = s.substring(0, s.lastIndexOf("fletcher") - 1);
byte[] bytes = s.getBytes(DataUtils.LATIN);
int checksum = DataUtils.getFletcher32(bytes,
    bytes.length);
if (check != checksum) {

Javadoc

Calculate the Fletcher32 checksum.

Popular methods of DataUtils

readVarInt
Read a variable size int.
appendMap
Append a map to the string builder, sorted by key.
checkArgument
Throw an IllegalArgumentException if the argument is invalid.
copyExcept
Copy the elements of an array, and remove one element.
copyWithGap
Copy the elements of an array, with a gap.
encodeLength
Convert the length to a length code 0..31. 31 means more than 1 MB.
formatMessage
Format an error message.
getCheckValue
Calculate a check value for the given integer. A check value is mean to verify the data is consisten
getErrorCode
Get the error code from an exception message.
getPageChunkId
Get the chunk id from the position.
getPageMaxLength
Get the maximum length for the given code. For the code 31, PAGE_LARGE is returned.
getPageOffset
Get the offset from the position.

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How to use getFletcher32methodin org.h2.mvstore.DataUtils

Best Java code snippets using org.h2.mvstore.DataUtils.getFletcher32 (Showing top 14 results out of 315)

How to use
getFletcher32
method
in
org.h2.mvstore.DataUtils