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From: Martin Veith <Martin.Veith@bmw-carit.de>
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Date: Wed, 17 Aug 2011 18:37:12 +0200
Subject: RE: array element access in c-binding
Thread-Topic: array element access in c-binding
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Hi Scott,

Please look at the examples below:

Transferring Bytes: (the byte array showed below is converted to a native a=
rray):
if(is_etch_nativearray(data)) {
	etch_nativearray* na =3D (etch_nativearray*) data;
	if(na !=3D NULL && na->content_obj_type =3D=3D ETCHTYPEB_BYTE) {
		data_buffer =3D static_cast<unsigned char*>(na->values);
		data_length =3D static_cast<Int32>(na->bytecount);
	}
}

Other data types e.g.  Int32 (all data types except byte are encapsulated i=
nto an EtchObject):
if(is_etch_arrayvalue(data)) {
	Int32  length =3D arrayvalue_count(data);
	for(Int32 k =3D 0; k < length; k++) {
		etch_int32* content =3D NULL;
		content =3D (etch_int32*)arrayvalue_get(data, k);
	}
}

If you have further questions you can also send your code to us and we can =
have a look at it.

Cheers,
Michael & Martin

-----Original Message-----
From: scott comer [mailto:wert1y@mac.com]=20
Sent: Mittwoch, 17. August 2011 17:32
To: etch-dev@incubator.apache.org; etch-user@incubator.apache.org
Subject: array element access in c-binding

thomas is bringing up the perf example from the etch examples with the=20
c-binding, and has the following trouble.

for the method, sum, which takes an int[], it isn't clear how to fetch=20
the elements out of the array. in general, a quick pointer to working=20
with arrays would be helpful.

thomas is working on a pilot project for us, here at spawn labs, to=20
bring up the c-binding in an image compare service which will be part of=20
our mostly java service cloud for game play. the c-binding is important=20
to us for other projects as well, including core communications for our=20
video appliance and dynamic firewall control.

any help or examples would be appreciated.

thanks,
scott out