Package org.apache.hivemind.service

Examples of org.apache.hivemind.service.BodyBuilder

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        ClassFab cf = (ClassFab) cfc.getMock();

        MethodSignature sig = new MethodSignature(boolean.class, "execute", new Class[]
        { String.class }, null);

        BodyBuilder builder = new BodyBuilder();
        builder.begin();
        builder.addln("boolean result = false;");
        builder.addln("for (int i = 0; i < _commands.length; i++)");
        builder.begin();
        builder.addln("result = _commands[i].execute($$);");
        builder.addln("if (result != false) break;");
        builder.end();
        builder.addln("return result;");
        builder.end();

        cf.addMethod(Modifier.PUBLIC, sig, builder.toString());
        cfc.setReturnValue(newMethodFab());

        replayControls();

        ChainBuilderImpl cb = new ChainBuilderImpl();
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                Modifier.PUBLIC | Modifier.SYNCHRONIZED | Modifier.FINAL,
                new MethodSignature(void.class, "_setInner", new Class[]
                { serviceInterface }, null),
                "{ _inner = $1; }");

        BodyBuilder builder = new BodyBuilder();
        builder.begin();
        builder.addln("if (_shutdown)");
        builder.begin();
        builder.addln("_inner = null;");
        builder.addln("throw org.apache.hivemind.HiveMind#createRegistryShutdownException();");
        builder.end();

        builder.addln("return _inner;");
        builder.end();

        classFab.addMethod(Modifier.PRIVATE, new MethodSignature(serviceInterface, "_getInner",
                null, null), builder.toString());

        proxyBuilder.addServiceMethods("_getInner()");

        return classFab.createClass();
    }
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        classFab.addField("_deferredProxy", deferredProxyClass);
        classFab.addField("_service", serviceInterface);
        classFab.addField("_serviceModel", getClass());

        BodyBuilder body = new BodyBuilder();

        // The constructor remembers the outer proxy and registers itself
        // with the outer proxy.

        body.begin();

        body.addln("this($1);");
        body.addln("_deferredProxy = $2;");
        body.addln("_serviceModel = $3;");
        body.addln("_deferredProxy._setInner(this);");

        body.end();

        classFab.addConstructor(new Class[]
        { String.class, deferredProxyClass, getClass() }, null, body.toString());

        // Method _service() will look up the service implementation,
        // then update the deferred proxy to go directly to the
        // service implementation, bypassing itself!

        body.clear();
        body.begin();

        body.add("if (_service == null)");
        body.begin();

        body.add("_service = (");
        body.add(serviceInterface.getName());
        body.addln(") _serviceModel.getActualServiceImplementation();");

        body.add("_deferredProxy._setInner(_service);");

        body.end();

        body.add("return _service;");

        body.end();

        classFab.addMethod(
                Modifier.PRIVATE | Modifier.FINAL | Modifier.SYNCHRONIZED,
                new MethodSignature(serviceInterface, "_service", null, null),
                body.toString());

        builder.addServiceMethods("_service()");

        // Build the implementation of interface SingletonInnerProxy

        body.clear();
        body.begin();

        body.add("_service();");

        body.end();

        classFab.addMethod(Modifier.PUBLIC | Modifier.FINAL, new MethodSignature(void.class,
                "_instantiateServiceImplementation", null, null), body.toString());

        classFab.addInterface(SingletonInnerProxy.class);

        return classFab.createClass();
    }
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        Class remoteInterface,
        String jndiName)
    {
        String homeInterfaceName = homeInterface.getName();

        BodyBuilder builder = new BodyBuilder();

        builder.begin();

        builder.addln("if (_remote != null)");
        builder.addln("  return _remote;");

        builder.add(homeInterfaceName);
        builder.add(" home = (");
        builder.add(homeInterfaceName);
        builder.add(") _lookup(");
        builder.addQuoted(jndiName);
        builder.addln(");");

        builder.add("try");
        builder.begin();
        builder.add("_remote = home.create();");
        builder.end();
        builder.add("catch (javax.ejb.CreateException ex)");
        builder.begin();
        builder.add("throw new java.rmi.RemoteException(ex.getMessage(), ex);");
        builder.end();

        builder.add("return _remote;");

        builder.end();

        classFab.addMethod(
            Modifier.SYNCHRONIZED + Modifier.PRIVATE,
            new MethodSignature(
                remoteInterface,
                "_lookupRemote",
                null,
                new Class[] { RemoteException.class }),
            builder.toString());

    }
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    {
        String methodName = sig.getName();

        boolean isVoid = sig.getReturnType().equals(Void.TYPE);

        BodyBuilder builder = new BodyBuilder();

        builder.begin();

        builder.addln("boolean first = true;");
        builder.add("while (true)");
        builder.begin();

        builder.add("try");
        builder.begin();

        if (!isVoid)
            builder.add("return ");

        builder.add("_lookupRemote().");
        builder.add(methodName);
        builder.addln("($$);");

        if (isVoid)
            builder.addln("return;");

        builder.end(); // try

        builder.add("catch (java.rmi.RemoteException ex)");
        builder.begin();

        builder.addln("if (first)");
        builder.begin();

        builder.addln("_handleRemoteException(ex);");
        builder.addln("first = false;");

        builder.end(); // if
        builder.addln("else");
        builder.add("  throw ex;");
        builder.end(); // catch
        builder.end(); // while
        builder.end();

        classFab.addMethod(Modifier.PUBLIC, sig, builder.toString());
    }
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        cf.addField("_targetService", targetServiceClass);

        cf.addConstructor(new Class[]
        { targetServiceClass }, null, "{ super(); _targetService = $1; }");

        BodyBuilder b = new BodyBuilder();

        b.begin();
        b.addln(
                "{0} property = _targetService.{1}();",
                serviceInterface.getName(),
                readPropertyMethodName);

        b.addln("if (property == null)");
        b.add("  throw new java.lang.NullPointerException(");
        b.addQuoted(ImplMessages.servicePropertyWasNull(propertyName, targetService));
        b.addln(");");

        b.addln("return property;");

        b.end();

        MethodSignature sig = new MethodSignature(serviceInterface, "_targetServiceProperty", null,
                null);
        cf.addMethod(Modifier.FINAL | Modifier.PRIVATE, sig, b.toString());
    }
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    /** @since 1.1 */
    private void addSerializable(String pointId)
    {
        _classFab.addInterface(Serializable.class);

        BodyBuilder bb = new BodyBuilder();

        bb.add(
                "return {0}.getServiceSerializationSupport().getServiceTokenForService(\"{1}\");",
                ServiceSerializationHelper.class.getName(),
                pointId);

        MethodSignature sig = new MethodSignature(Object.class, "writeReplace", null, null);

        _classFab.addMethod(Modifier.PRIVATE, sig, bb.toString());
    }
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     *            the name of a variable, or a method invocation snippet, used to redirect the
     *            invocation on the proxy to the actual service implementation.
     */
    public void addServiceMethods(String indirection)
    {
        BodyBuilder builder = new BodyBuilder();

        MethodIterator mi = new MethodIterator(_serviceInterface);
        while (mi.hasNext())
        {
            MethodSignature m = mi.next();
            if( !_classFab.containsMethod( m ) )
            {
                builder.clear();
                builder.begin();
                builder.add("return ($r) ");
                builder.add(indirection);
                builder.add(".");
                builder.add(m.getName());
                builder.addln("($$);");
                builder.end();
                _classFab.addMethod(Modifier.PUBLIC, m, builder.toString());
            }
        }

        if (!mi.getToString())
            ClassFabUtils.addToStringMethod(_classFab, "<" + _type + " for "
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                Modifier.PUBLIC | Modifier.SYNCHRONIZED | Modifier.FINAL,
                new MethodSignature(void.class, "_setInner", new Class[]
                { serviceInterface }, null),
                "{ _inner = $1; }");

        BodyBuilder builder = new BodyBuilder();
        builder.begin();
        builder.addln("if (_shutdown)");
        builder.begin();
        builder.addln("_inner = null;");
        builder.addln("throw org.apache.hivemind.HiveMind#createRegistryShutdownException();");
        builder.end();

        builder.addln("return _inner;");
        builder.end();

        classFab.addMethod(Modifier.PRIVATE, new MethodSignature(serviceInterface, "_getInner",
                null, null), builder.toString());

        proxyBuilder.addServiceMethods("_getInner()");

        return classFab.createClass();
    }
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        classFab.addField("_deferredProxy", deferredProxyClass);
        classFab.addField("_service", serviceInterface);
        classFab.addField("_serviceModel", getClass());

        BodyBuilder body = new BodyBuilder();

        // The constructor remembers the outer proxy and registers itself
        // with the outer proxy.

        body.begin();

        body.addln("super();");
        body.addln("_deferredProxy = $1;");
        body.addln("_serviceModel = $2;");
        body.addln("_deferredProxy._setInner(this);");

        body.end();

        classFab.addConstructor(new Class[]
        { deferredProxyClass, getClass() }, null, body.toString());

        // Method _service() will look up the service implementation,
        // then update the deferred proxy to go directly to the
        // service implementation, bypassing itself!

        body.clear();
        body.begin();

        body.add("if (_service == null)");
        body.begin();

        body.add("_service = (");
        body.add(serviceInterface.getName());
        body.addln(") _serviceModel.getActualServiceImplementation();");

        body.add("_deferredProxy._setInner(_service);");

        body.end();

        body.add("return _service;");

        body.end();

        classFab.addMethod(
                Modifier.PRIVATE | Modifier.FINAL | Modifier.SYNCHRONIZED,
                new MethodSignature(serviceInterface, "_service", null, null),
                body.toString());

        builder.addServiceMethods("_service()");

        // Build the implementation of interface SingletonInnerProxy

        body.clear();
        body.begin();

        body.add("_service();");

        body.end();

        classFab.addMethod(Modifier.PUBLIC | Modifier.FINAL, new MethodSignature(void.class,
                "_instantiateServiceImplementation", null, null), body.toString());

        classFab.addInterface(SingletonInnerProxy.class);

        return classFab.createClass();
    }
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Related Classes of org.apache.hivemind.service.BodyBuilder

  • hivemind.test.services.impl.CountFactory
  • hivemind.test.services.impl.FilterLoggingInterceptor
  • org.apache.hivemind.impl.ConfigurationPointImpl
  • org.apache.hivemind.impl.ProxyBuilder
  • org.apache.hivemind.impl.ProxyUtils
  • org.apache.hivemind.impl.servicemodel.SingletonServiceModel
  • org.apache.hivemind.lib.chain.ChainBuilderImpl
  • org.apache.hivemind.lib.chain.TestChainBuilder
  • org.apache.hivemind.lib.impl.EJBProxyFactory
  • org.apache.hivemind.lib.impl.ServicePropertyFactory
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