@Override
public UnsafeArrayData copy() {
UnsafeArrayData arrayCopy = new UnsafeArrayData();
final byte[] arrayDataCopy = new byte[sizeInBytes];
PlatformDependent.copyMemory(
baseObject, baseOffset, arrayDataCopy, PlatformDependent.BYTE_ARRAY_OFFSET, sizeInBytes);
arrayCopy.pointTo(arrayDataCopy, PlatformDependent.BYTE_ARRAY_OFFSET, numElements, sizeInBytes);
return arrayCopy;
}
@Override
public byte[] getBinary(int ordinal) {
assertIndexIsValid(ordinal);
final int offset = getElementOffset(ordinal);
if (offset < 0) return null;
final int size = getElementSize(offset, ordinal);
final byte[] bytes = new byte[size];
PlatformDependent.copyMemory(
baseObject, baseOffset + offset, bytes, PlatformDependent.BYTE_ARRAY_OFFSET, size);
return bytes;
}
/** Write a record to the sorter. */
public void insertRecord(
Object recordBaseObject, long recordBaseOffset, int lengthInBytes, long prefix)
throws IOException {
// Need 4 bytes to store the record length.
final int totalSpaceRequired = lengthInBytes + 4;
if (!haveSpaceForRecord(totalSpaceRequired)) {
allocateSpaceForRecord(totalSpaceRequired);
}
final long recordAddress =
memoryManager.encodePageNumberAndOffset(currentPage, currentPagePosition);
final Object dataPageBaseObject = currentPage.getBaseObject();
PlatformDependent.UNSAFE.putInt(dataPageBaseObject, currentPagePosition, lengthInBytes);
currentPagePosition += 4;
PlatformDependent.copyMemory(
recordBaseObject, recordBaseOffset, dataPageBaseObject, currentPagePosition, lengthInBytes);
currentPagePosition += lengthInBytes;
freeSpaceInCurrentPage -= totalSpaceRequired;
sorter.insertRecord(recordAddress, prefix);
}
/**
* Writes the content of this string into a memory address, identified by an object and an offset.
* The target memory address must already been allocated, and have enough space to hold all the
* bytes in this string.
*/
public void writeToMemory(Object target, long targetOffset) {
PlatformDependent.copyMemory(base, offset, target, targetOffset, numBytes);
}
public void writeToMemory(Object target, long targetOffset) {
PlatformDependent.copyMemory(baseObject, baseOffset, target, targetOffset, sizeInBytes);
}