How to use

get

method

in

org.h2.mvstore.cache.CacheLongKeyLIRS

int len = CACHE_BLOCK_SIZE - off;
len = Math.min(len, dst.remaining());
ByteBuffer buff = cache.get(cachePos);
if (buff == null) {
  buff = ByteBuffer.allocate(CACHE_BLOCK_SIZE);

  r = cacheChunkRef.get(pos);
} else {
  r = null;
    Page p = cache.get(pos);
    if (p != null) {
      r = new PageChildren(p);

/**
 * Read a page.
 *
 * @param map the map
 * @param pos the page position
 * @return the page
 */
Page readPage(MVMap<?, ?> map, long pos) {
  if (pos == 0) {
    throw DataUtils.newIllegalStateException(
        DataUtils.ERROR_FILE_CORRUPT, "Position 0");
  }
  Page p = cache == null ? null : cache.get(pos);
  if (p == null) {
    Chunk c = getChunk(pos);
    long filePos = c.block * BLOCK_SIZE;
    filePos += DataUtils.getPageOffset(pos);
    if (filePos < 0) {
      throw DataUtils.newIllegalStateException(
          DataUtils.ERROR_FILE_CORRUPT,
          "Negative position {0}", filePos);
    }
    long maxPos = (c.block + c.len) * BLOCK_SIZE;
    p = Page.read(fileStore, pos, map, filePos, maxPos);
    cachePage(pos, p, p.getMemory());
  }
  return p;
}

int len = CACHE_BLOCK_SIZE - off;
len = Math.min(len, dst.remaining());
ByteBuffer buff = cache.get(cachePos);
if (buff == null) {
  buff = ByteBuffer.allocate(CACHE_BLOCK_SIZE);

int len = CACHE_BLOCK_SIZE - off;
len = Math.min(len, dst.remaining());
ByteBuffer buff = cache.get(cachePos);
if (buff == null) {
  buff = ByteBuffer.allocate(CACHE_BLOCK_SIZE);

int len = CACHE_BLOCK_SIZE - off;
len = Math.min(len, dst.remaining());
ByteBuffer buff = cache.get(cachePos);
if (buff == null) {
  buff = ByteBuffer.allocate(CACHE_BLOCK_SIZE);

  /** {@inheritDoc} */
  @Override public GridH2KeyValueRowOffheap createPointer(long ptr) {
    GridH2KeyValueRowOffheap row = rowCache.get(ptr);
    if (row != null) {
      assert row.pointer() == ptr : ptr + " " + row.pointer();
      return row;
    }
    return new GridH2KeyValueRowOffheap(this, ptr);
  }
}

  r = cacheChunkRef.get(pos);
} else {
  r = null;
    Page p = cache.get(pos);
    if (p != null) {
      r = new PageChildren(p);

  r = cacheChunkRef.get(pos);
} else {
  r = null;
    Page p = cache.get(pos);
    if (p != null) {
      r = new PageChildren(p);

  r = cacheChunkRef.get(pos);
} else {
  r = null;
    Page p = cache.get(pos);
    if (p != null) {
      r = new PageChildren(p);

/**
 * Read a page.
 *
 * @param map the map
 * @param pos the page position
 * @return the page
 */
Page readPage(MVMap<?, ?> map, long pos) {
  if (pos == 0) {
    throw DataUtils.newIllegalStateException(
        DataUtils.ERROR_FILE_CORRUPT, "Position 0");
  }
  Page p = cache == null ? null : cache.get(pos);
  if (p == null) {
    Chunk c = getChunk(pos);
    long filePos = c.block * BLOCK_SIZE;
    filePos += DataUtils.getPageOffset(pos);
    if (filePos < 0) {
      throw DataUtils.newIllegalStateException(
          DataUtils.ERROR_FILE_CORRUPT,
          "Negative position {0}", filePos);
    }
    long maxPos = (c.block + c.len) * BLOCK_SIZE;
    p = Page.read(fileStore, pos, map, filePos, maxPos);
    cachePage(pos, p, p.getMemory());
  }
  return p;
}

/**
 * Read a page.
 *
 * @param map the map
 * @param pos the page position
 * @return the page
 */
Page readPage(MVMap<?, ?> map, long pos) {
  if (pos == 0) {
    throw DataUtils.newIllegalStateException(
        DataUtils.ERROR_FILE_CORRUPT, "Position 0");
  }
  Page p = cache == null ? null : cache.get(pos);
  if (p == null) {
    Chunk c = getChunk(pos);
    long filePos = c.block * BLOCK_SIZE;
    filePos += DataUtils.getPageOffset(pos);
    if (filePos < 0) {
      throw DataUtils.newIllegalStateException(
          DataUtils.ERROR_FILE_CORRUPT,
          "Negative position {0}", filePos);
    }
    long maxPos = (c.block + c.len) * BLOCK_SIZE;
    p = Page.read(fileStore, pos, map, filePos, maxPos);
    cachePage(pos, p, p.getMemory());
  }
  return p;
}

/**
 * Read a page.
 *
 * @param map the map
 * @param pos the page position
 * @return the page
 */
Page readPage(MVMap<?, ?> map, long pos) {
  if (pos == 0) {
    throw DataUtils.newIllegalStateException(
        DataUtils.ERROR_FILE_CORRUPT, "Position 0");
  }
  Page p = cache == null ? null : cache.get(pos);
  if (p == null) {
    Chunk c = getChunk(pos);
    long filePos = c.block * BLOCK_SIZE;
    filePos += DataUtils.getPageOffset(pos);
    if (filePos < 0) {
      throw DataUtils.newIllegalStateException(
          DataUtils.ERROR_FILE_CORRUPT,
          "Negative position {0}", filePos);
    }
    long maxPos = (c.block + c.len) * BLOCK_SIZE;
    p = Page.read(fileStore, pos, map, filePos, maxPos);
    cachePage(pos, p, p.getMemory());
  }
  return p;
}