Java: convenient API for reading/writing primitive vectors about flatbuffers HOT 4 CLOSED

Ok, so your:

int offset = Event.CreateDataVector(fbb, data);

would do the same as:

Event.startDataVector(fbb, data.length);
for (byte i = data.length - 1; i >=0; i--) fbb.addByte(data[i]);
int offset = fbb.endVector();

I agree that's a welcome addition. However I think if we go that route, we should support it for all types of vectors where feasible, at a minimum all scalar types.

Another question is, wether arrays are sufficient, i.e. Vector may be common as well.

from flatbuffers.

Another nice option would be to expose vectors as primitive buffers, ex: ByteBuffer, LongBuffer, IntBuffer,etc... CharBuffer would be nice, but I'm pretty sure that's only for storing Java's 2-byte chars.

This would result in only the construction of a new buffer object pointing to the original ByteBuffer as a backing store... Would also provide a useful way to fill an in-progress flatbuffer.

If my data benchmarks vs protobuf storage where I want ByteBuffer access (instead of the many copies of byte arrays) reveals that flatbuffers work out better, I may provide a patch for the Java generator...

from flatbuffers.

asLongBuffer() does not take any offset/size arguments, so seems it can only refer to the entire FlatBuffer. I see no way to do this without copying/allocating a new buffer.

from flatbuffers.

fixed

from flatbuffers.