Example usage for com.google.gwt.user.linker.rpc RpcPolicyFileArtifact RpcPolicyFileArtifact

Introduction

In this page you can find the example usage for com.google.gwt.user.linker.rpc RpcPolicyFileArtifact RpcPolicyFileArtifact.

Prototype

public RpcPolicyFileArtifact(String proxyClass, EmittedArtifact artifact) 

Source Link

Usage

From source file:de.csenk.gwt.ws.rebind.filter.serialization.GWTSerializerGenerator.java

License:Open Source License

/**
 * @param serializerLogger/*from w w  w  .j  a  v a2  s .  c  o m*/
 * @param context
 * @param typesSentFromBrowser
 * @param typesSentToBrowser
 * @param typeStrings
 * @return
 */
private String writeSerializationPolicyFile(TreeLogger logger, GeneratorContext ctx,
        SerializableTypeOracle serializationSto, SerializableTypeOracle deserializationSto,
        Map<JType, String> typeStrings, JClassType serializerInterface) throws UnableToCompleteException {
    try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        OutputStreamWriter osw = new OutputStreamWriter(baos,
                SerializationPolicyLoader.SERIALIZATION_POLICY_FILE_ENCODING);
        TypeOracle oracle = ctx.getTypeOracle();
        PrintWriter pw = new PrintWriter(osw);

        JType[] serializableTypes = unionOfTypeArrays(serializationSto.getSerializableTypes(),
                deserializationSto.getSerializableTypes(), new JType[] { serializerInterface });

        for (int i = 0; i < serializableTypes.length; ++i) {
            JType type = serializableTypes[i];
            String binaryTypeName = TypeOracleMediator.computeBinaryClassName(type);
            pw.print(binaryTypeName);
            pw.print(", " + Boolean.toString(deserializationSto.isSerializable(type)));
            pw.print(", " + Boolean.toString(deserializationSto.maybeInstantiated(type)));
            pw.print(", " + Boolean.toString(serializationSto.isSerializable(type)));
            pw.print(", " + Boolean.toString(serializationSto.maybeInstantiated(type)));
            pw.print(", " + typeStrings.get(type));

            /*
             * Include the serialization signature to bump the RPC file name
             * if obfuscated identifiers are used.
             */
            pw.print(", " + SerializationUtils.getSerializationSignature(oracle, type));
            pw.print('\n');

            /*
             * Emit client-side field information for classes that may be
             * enhanced on the server. Each line consists of a
             * comma-separated list containing the keyword '@ClientFields',
             * the class name, and a list of all potentially serializable
             * client-visible fields.
             */
            if ((type instanceof JClassType) && ((JClassType) type).isEnhanced()) {
                JField[] fields = ((JClassType) type).getFields();
                JField[] rpcFields = new JField[fields.length];
                int numRpcFields = 0;
                for (JField f : fields) {
                    if (f.isTransient() || f.isStatic() || f.isFinal()) {
                        continue;
                    }
                    rpcFields[numRpcFields++] = f;
                }

                pw.print(SerializationPolicyLoader.CLIENT_FIELDS_KEYWORD);
                pw.print(',');
                pw.print(binaryTypeName);
                for (int idx = 0; idx < numRpcFields; idx++) {
                    pw.print(',');
                    pw.print(rpcFields[idx].getName());
                }
                pw.print('\n');
            }
        }

        // Closes the wrapped streams.
        pw.close();

        byte[] serializationPolicyFileContents = baos.toByteArray();
        String serializationPolicyName = Util.computeStrongName(serializationPolicyFileContents);

        String serializationPolicyFileName = SerializationPolicyLoader
                .getSerializationPolicyFileName(serializationPolicyName);
        OutputStream os = ctx.tryCreateResource(logger, serializationPolicyFileName);
        if (os != null) {
            os.write(serializationPolicyFileContents);
            GeneratedResource resource = ctx.commitResource(logger, os);

            /*
             * Record which proxy class created the resource. A manifest
             * will be emitted by the RpcPolicyManifestLinker.
             */
            ctx.commitArtifact(logger,
                    new RpcPolicyFileArtifact(serializerInterface.getQualifiedSourceName(), resource));
        } else {
            logger.log(TreeLogger.TRACE, "SerializationPolicy file for RemoteService '"
                    + serializerInterface.getQualifiedSourceName() + "' already exists; no need to rewrite it.",
                    null);
        }

        return serializationPolicyName;
    } catch (UnsupportedEncodingException e) {
        logger.log(TreeLogger.ERROR,
                SerializationPolicyLoader.SERIALIZATION_POLICY_FILE_ENCODING + " is not supported", e);
        throw new UnableToCompleteException();
    } catch (IOException e) {
        logger.log(TreeLogger.ERROR, null, e);
        throw new UnableToCompleteException();
    }
}

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