Hi Bernard,
Bernard Marcelly wrote:
Hello,
While struggling to call a script from another script I found some
oddities.
From Dev'Guide 18.5.2 "Implementing the XScript interface", I have
extracted this code:
public Object invoke( Object[] aParams,
short[][] aOutParamIndex,
Object[][] aOutParam )
This definition is not consistent with the (unpublished) IDL
com.sun.start.script.provider.XScript :
invoke( [in] sequence< any > aParams,
[out] sequence< short > aOutParamIndex,
[out] sequence< any > aOutParam )
If you call a script from Javascript you have to invoke like this:
args = new Array(1);
args[0] = "Hello";
a = new Array( new Array() );
b = new Array( new Array() );
xScript.invoke(args, a, b);
This means that Dev'Guide definition was implemented.
So, were is the error ? In the Dev'Guide and in Javascript
implementation ? In the IDL definition ? I would think the IDL is
correct because there is no need of sequence of sequence.
your problem is probably quite simple. you extracted the code from a
Java example where you see the mapped types from IDL. In the IDL file
you see the corresponding IDL types. An out parameter is mapped to an
array of length 1, a sequence is mapped to an array generally and an any
is mapped to Java Object.
For example:
IDL:
[out] sequence<any>
is mapped to Java:
Object[][]
I hope this helps and everything is ok.
Another extract from Dev'Guide 18.5.2 :
// Initialise the out paramters - not used at the moment
aOutParamIndex[0] = new short[0];
aOutParam[0] = new Object[0];
Does it mean that transmission of out parameters is not yet implemented ?
I suspect this because I could not retrieve anything after an Invoke
from Javascript or from BeanShell. If this is not implemented, it should
be written clearly in the IDL description.
out parameters working fine, you simply have to initialize the array and
an array with the length of 0 is fine.
Juergen
Regards
Bernard
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