BigfootDev/flatbuffers
1
0
Fork 1
mirror of https://github.com/google/flatbuffers.git synced 2026-06-03 12:21:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

Added convenient vector from array construction for Java.

Browse Source 
Change-Id: Ib3fd576cf9fa4b4058a9fd1bbe24a0859bc3917a
Tested: on Linux.
This commit is contained in:
Wouter van Oortmerssen
2014-09-11 14:36:33 -07:00
parent 858e9961e2
commit cb58fc6fa1
5 changed files with 47 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
docs/source/JavaUsage.md
View File

@@ -90,8 +90,13 @@ As you can see, references to other objects (e.g. the string above) are simple
ints, and thus do not have the type-safety of the Offset type in C++. Extra
case must thus be taken that you set the right offset on the right field.
Vectors also use this start/end pattern to allow vectors of both scalar types
and structs:
Vectors can be created from the corresponding Java array like so:
int inv = Monster.createInventoryVector(fbb, new byte[] { 0, 1, 2, 3, 4 });
This works for arrays of scalars and (int) offsets to strings/tables,
but not structs. If you want to write structs, or what you want to write
does not sit in an array, you can also use the start/end pattern:
Monster.startInventoryVector(fbb, 5);
for (byte i = 4; i >=0; i--) fbb.addByte(i);
@@ -99,8 +104,8 @@ and structs:
You can use the generated method `startInventoryVector` to conveniently call
`startVector` with the right element size. You pass the number of
elements you want to write. You write the elements backwards since the buffer
is being constructed back to front.
elements you want to write. Note how you write the elements backwards since
the buffer is being constructed back to front.
There are `add` functions for all the scalar types. You use `addOffset` for
any previously constructed objects (such as other tables, strings, vectors).