Re: Return permutation directly from the server without selection script.

I wrote such a Linker :

/**
* This GWT linker creates a properties file which can be used to
resolve Permutation Strong name given UserAgent and locale.
*
* @author Etienne Lacazedieu
*
*/
@LinkerOrder(Order.PRE)
public class StrongNameOracleLinker extends AbstractLinker {
public static final String STRONGNAME_FILE = "permutation.properties";

@Override
public String getDescription() {
return "PermutationStrongName Oracle linker";
}

@Override
public ArtifactSet link(TreeLogger logger, LinkerContext context,
ArtifactSet artifacts) throws UnableToCompleteException {
artifacts = new ArtifactSet(artifacts);
ByteArrayOutputStream out = new ByteArrayOutputStream();

String permutation = null;
String locale = null;
String userAgent = null;
SelectionProperty selectionProperty = null;

Properties props = new Properties();

for (CompilationResult result :
artifacts.find(CompilationResult.class)) {
permutation = result.getStrongName();

SortedSet<SortedMap<SelectionProperty, String>>
propertiesMap = result.getPropertyMap();
for (SortedMap<SelectionProperty, String> sm : propertiesMap) {
for (Map.Entry<SelectionProperty, String> e : sm.entrySet()) {
selectionProperty = e.getKey();
if ("locale".equals(selectionProperty.getName())) {
locale = e.getValue();
}
if ("user.agent".equals(selectionProperty.getName())) {
userAgent = e.getValue();
}
}
}
props.setProperty(userAgent + "." + locale, permutation);
}
try {
props.store(out, "StrongNameOracle properties file");
} catch (IOException e) { // Should generally not happen
logger.log(TreeLogger.ERROR, "Unable to store deRPC data", e);
throw new UnableToCompleteException();
}
SyntheticArtifact a = emitBytes(logger, out.toByteArray(),
STRONGNAME_FILE);
artifacts.add(a);

return artifacts;
}

}

2010/9/17 Helder Suzuki <heldersuzuki@gmail.com>:
> +1
>
> On Aug 4, 9:17 am, André Moraes <andr...@gmail.com> wrote:
>> Hi,
>>
>> I saw the presentation of the GWT team and they talked about sending the
>> permutation without sending first the selection script.
>>
>> I can read the HTTP headers and find-out what is the browser which is making
>> the request, this is the "easy" part.
>>
>> But how can I find-out which file was generated by which permutation in the
>> GWT compiler pipeline? I belive that I will need to write a linker to get
>> those files, but how?
>>
>> Thanks.
>>
>> --
>> André Moraes
>> Analista de Desenvolvimento de Sistemas
>> andr...@gmail.comhttp://andredevchannel.blogspot.com/
>
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