Examples with JCatchBlock com.sun.codemodel.JCatchBlock used on opensource projects

Example 11 with JCatchBlock

use of com.sun.codemodel.JCatchBlock in project metro-jax-ws by eclipse-ee4j.

the class ServiceGenerator method writeAbsWSDLLocation.

/*
       Generates the code to create URL for absolute WSDL location

       for e.g.:
       static {
           URL url = null;
           WebServiceException e = null;
           try {
                url = new URL("http://ExampleService.wsdl");
           } catch (MalformedURLException ex) {
                e = new WebServiceException(ex);
           }
           EXAMPLESERVICE_WSDL_LOCATION = url;
           EXAMPLESERVICE_EXCEPTION = e;
       }
    */
private void writeAbsWSDLLocation(JDefinedClass cls, JFieldVar urlField, JFieldVar exField) {
    JBlock staticBlock = cls.init();
    JVar urlVar = staticBlock.decl(cm.ref(URL.class), "url", JExpr._null());
    JVar exVar = staticBlock.decl(cm.ref(WebServiceException.class), "e", JExpr._null());
    JTryBlock tryBlock = staticBlock._try();
    tryBlock.body().assign(urlVar, JExpr._new(cm.ref(URL.class)).arg(wsdlLocation));
    JCatchBlock catchBlock = tryBlock._catch(cm.ref(MalformedURLException.class));
    catchBlock.param("ex");
    catchBlock.body().assign(exVar, JExpr._new(cm.ref(WebServiceException.class)).arg(JExpr.ref("ex")));
    staticBlock.assign(urlField, urlVar);
    staticBlock.assign(exField, exVar);
}

Example 12 with JCatchBlock

use of com.sun.codemodel.JCatchBlock in project mercury by yellow013.

the class FastDeserializerGenerator method generateDeserializer.

public FastDeserializer<T> generateDeserializer() {
    String className = getClassName(writer, reader, useGenericTypes ? "Generic" : "Specific");
    JPackage classPackage = codeModel._package(generatedPackageName);
    try {
        generatedClass = classPackage._class(className);
        JVar readerSchemaVar = generatedClass.field(JMod.PRIVATE | JMod.FINAL, Schema.class, "readerSchema");
        constructor = generatedClass.constructor(JMod.PUBLIC);
        JVar constructorParam = constructor.param(Schema.class, "readerSchema");
        constructor.body().assign(JExpr.refthis(readerSchemaVar.name()), constructorParam);
        Schema aliasedWriterSchema = writer;
        /**
         * {@link Schema.applyAliases} is not working correctly in avro-1.4 since there
         * is a bug in this function: {@literal Schema#getFieldAlias}.
         */
        if (!Utils.isAvro14()) {
            aliasedWriterSchema = Schema.applyAliases(writer, reader);
        }
        Symbol resolvingGrammar = new ResolvingGrammarGenerator().generate(aliasedWriterSchema, reader);
        FieldAction fieldAction = FieldAction.fromValues(aliasedWriterSchema.getType(), true, resolvingGrammar);
        if (useGenericTypes) {
            registerSchema(reader, readerSchemaVar);
        }
        JClass readerSchemaClass = schemaAssistant.classFromSchema(reader);
        /**
         * Writer schema could be using a different namespace from the reader schema, so
         * we should always use the reader schema class for generic type.
         */
        generatedClass._implements(codeModel.ref(FastDeserializer.class).narrow(readerSchemaClass));
        JMethod deserializeMethod = generatedClass.method(JMod.PUBLIC, readerSchemaClass, "deserialize");
        JBlock topLevelDeserializeBlock = new JBlock();
        final Supplier<JExpression> reuseSupplier = () -> JExpr.direct(VAR_NAME_FOR_REUSE);
        switch(aliasedWriterSchema.getType()) {
            case RECORD:
                processRecord(readerSchemaVar, aliasedWriterSchema.getName(), aliasedWriterSchema, reader, topLevelDeserializeBlock, fieldAction, JBlock::_return, reuseSupplier);
                break;
            case ARRAY:
                processArray(readerSchemaVar, "array", aliasedWriterSchema, reader, topLevelDeserializeBlock, fieldAction, JBlock::_return, reuseSupplier);
                break;
            case MAP:
                processMap(readerSchemaVar, "map", aliasedWriterSchema, reader, topLevelDeserializeBlock, fieldAction, JBlock::_return, reuseSupplier);
                break;
            default:
                throw new FastDeserializerGeneratorException("Incorrect top-level writer schema: " + aliasedWriterSchema.getType());
        }
        if (schemaAssistant.getExceptionsFromStringable().isEmpty()) {
            assignBlockToBody(deserializeMethod, topLevelDeserializeBlock);
        } else {
            JTryBlock tryBlock = deserializeMethod.body()._try();
            assignBlockToBody(tryBlock, topLevelDeserializeBlock);
            for (Class<? extends Exception> classException : schemaAssistant.getExceptionsFromStringable()) {
                JCatchBlock catchBlock = tryBlock._catch(codeModel.ref(classException));
                JVar exceptionVar = catchBlock.param("e");
                catchBlock.body()._throw(JExpr._new(codeModel.ref(AvroRuntimeException.class)).arg(exceptionVar));
            }
        }
        deserializeMethod._throws(codeModel.ref(IOException.class));
        deserializeMethod.param(readerSchemaClass, VAR_NAME_FOR_REUSE);
        deserializeMethod.param(Decoder.class, DECODER);
        @SuppressWarnings("unchecked") Class<FastDeserializer<T>> clazz = (Class<FastDeserializer<T>>) compileClass(className, schemaAssistant.getUsedFullyQualifiedClassNameSet());
        return clazz.getConstructor(Schema.class).newInstance(reader);
    } catch (JClassAlreadyExistsException e) {
        throw new FastDeserializerGeneratorException("Class: " + className + " already exists");
    } catch (Exception e) {
        throw new FastDeserializerGeneratorException(e);
    }
}

Example 13 with JCatchBlock

use of com.sun.codemodel.JCatchBlock in project drill by apache.

the class HiveFuncHolder method generateEval.

private HoldingContainer generateEval(ClassGenerator<?> g, HoldingContainer[] inputVariables, JVar[] workspaceJVars) {
    HoldingContainer out = g.declare(returnType);
    JCodeModel m = g.getModel();
    JBlock sub = new JBlock(true, true);
    // initialize DeferredObject's. For an optional type, assign the value holder only if it is not null
    for (int i = 0; i < argTypes.length; i++) {
        if (inputVariables[i].isOptional()) {
            sub.assign(workspaceJVars[3].component(JExpr.lit(i)), workspaceJVars[2].component(JExpr.lit(i)));
            JBlock conditionalBlock = new JBlock(false, false);
            JConditional jc = conditionalBlock._if(inputVariables[i].getIsSet().ne(JExpr.lit(0)));
            jc._then().assign(JExpr.ref(workspaceJVars[3].component(JExpr.lit(i)), "valueHolder"), inputVariables[i].getHolder());
            jc._else().assign(JExpr.ref(workspaceJVars[3].component(JExpr.lit(i)), "valueHolder"), JExpr._null());
            sub.add(conditionalBlock);
        } else {
            sub.assign(workspaceJVars[3].component(JExpr.lit(i)), workspaceJVars[2].component(JExpr.lit(i)));
            sub.assign(JExpr.ref(workspaceJVars[3].component(JExpr.lit(i)), "valueHolder"), inputVariables[i].getHolder());
        }
    }
    // declare generic object for storing return value from GenericUDF.evaluate
    JVar retVal = sub.decl(m._ref(Object.class), "ret");
    // create try..catch block to call the GenericUDF instance with given input
    JTryBlock udfEvalTry = sub._try();
    udfEvalTry.body().assign(retVal, workspaceJVars[1].invoke("evaluate").arg(workspaceJVars[3]));
    JCatchBlock udfEvalCatch = udfEvalTry._catch(m.directClass(Exception.class.getCanonicalName()));
    JVar exVar = udfEvalCatch.param("ex");
    udfEvalCatch.body()._throw(JExpr._new(m.directClass(RuntimeException.class.getCanonicalName())).arg(JExpr.lit(String.format("GenericUDF.evaluate method failed"))).arg(exVar));
    // get the ValueHolder from retVal and return ObjectInspector
    sub.add(ObjectInspectorHelper.getDrillObject(m, returnOI, workspaceJVars[0], workspaceJVars[4], retVal));
    sub.assign(out.getHolder(), workspaceJVars[4]);
    // now add it to the doEval block in Generated class
    JBlock setup = g.getBlock(ClassGenerator.BlockType.EVAL);
    setup.directStatement(String.format("/** start %s for function %s **/ ", ClassGenerator.BlockType.EVAL.name(), genericUdfClazz.getName() + (!isGenericUDF ? "(" + udfName + ")" : "")));
    setup.add(sub);
    setup.directStatement(String.format("/** end %s for function %s **/ ", ClassGenerator.BlockType.EVAL.name(), genericUdfClazz.getName() + (!isGenericUDF ? "(" + udfName + ")" : "")));
    return out;
}

Example 14 with JCatchBlock

use of com.sun.codemodel.JCatchBlock in project drill by apache.

the class ClassGenerator method addCtor.

/**
 * The code generator creates a method called __DRILL_INIT__ which takes the
 * place of the constructor when the code goes though the byte code merge.
 * For Plain-old Java, we call the method from a constructor created for
 * that purpose. (Generated code, fortunately, never includes a constructor,
 * so we can create one.) Since the init block throws an exception (which
 * should never occur), the generated constructor converts the checked
 * exception into an unchecked one so as to not require changes to the
 * various places that create instances of the generated classes.
 *
 * Example:<code><pre>
 * public StreamingAggregatorGen1() {
 *       try {
 *         __DRILL_INIT__();
 *     } catch (SchemaChangeException e) {
 *         throw new UnsupportedOperationException(e);
 *     }
 * }</pre></code>
 *
 * Note: in Java 8 we'd use the <tt>Parameter</tt> class defined in Java's
 * introspection package. But, Drill prefers Java 7 which only provides
 * parameter types.
 */
private void addCtor(Class<?>[] parameters) {
    JMethod ctor = clazz.constructor(JMod.PUBLIC);
    JBlock body = ctor.body();
    // If there are parameters, need to pass them to the super class.
    if (parameters.length > 0) {
        JInvocation superCall = JExpr.invoke("super");
        for (int i = 1; i < parameters.length; i++) {
            Class<?> p = parameters[i];
            superCall.arg(ctor.param(model._ref(p), "arg" + i));
        }
        body.add(superCall);
    }
    JTryBlock tryBlock = body._try();
    tryBlock.body().invoke(SignatureHolder.DRILL_INIT_METHOD);
    JCatchBlock catchBlock = tryBlock._catch(model.ref(SchemaChangeException.class));
    catchBlock.body()._throw(JExpr._new(model.ref(UnsupportedOperationException.class)).arg(catchBlock.param("e")));
}