Examples of ClassFab

org.apache.hivemind.service.ClassFab
.org/products/javassist">Javassist home page.
Method bodies look largely like Java. References to java classes must be fully qualified. Several special variables are used:
- $0 first parameter, equivalent to this in Java code (and can't be used when creating a static method)
- $1, $2, ... actual parameters to the method
- $args all the parameters as an Object[]
- $r the return type of the method, typically used as return ($r) .... $r is valid with method that return void. This also handles conversions between wrapper types and primitive types.
- $w conversion from primitive type to wrapper type, used as ($w) foo() where foo() returns a primitive type and a wrapper type is needed
@author Howard Lewis Ship
org.apache.tapestry.ioc.services.ClassFab
.org/products/javassist">Javassist home page.
Method bodies look largely like Java. References to java classes must be fully qualified. Several special variables are used:
- $0 first parameter, equivalent to this in Java code (and can't be used when creating a static method)
- $1, $2, ... actual parameters to the method
- $args all the parameters as an Object[]
- $r the return type of the method, typically used as return ($r) .... $r is valid with method that return void. This also handles conversions between wrapper types and primitive types.
- $w conversion from primitive type to wrapper type, used as ($w) foo() where foo() returns a primitive type and a wrapper type is needed
ClassFab instances are not thread safe.
ClassFab instances are created by a {@link org.apache.tapestry.ioc.services.ClassFactory}.
org.apache.tapestry5.ioc.services.ClassFab
.org/products/javassist">Javassist home page.
Method bodies look largely like Java. References to java classes must be fully qualified. Several special variables are used:
- $0 first parameter, equivalent to this in Java code (and can't be used when creating a static method)
- $1, $2, ... actual parameters to the method
- $args all the parameters as an Object[]
- $r the return type of the method, typically used as return ($r) .... $r is valid with method that return void. This also handles conversions between wrapper types and primitive types.
- $w conversion from primitive type to wrapper type, used as ($w) foo() where foo() returns a primitive type and a wrapper type is needed
ClassFab instances are not thread safe.
ClassFab instances are created by a {@link org.apache.tapestry5.ioc.services.ClassFactory}. @deprecated In 5.3, use {@link PlasticProxyFactory} instead

Examples of org.apache.tapestry5.ioc.services.ClassFab

    }


    @Test
    public void add_constructor() throws Exception
    {
        ClassFab cf = newClassFab("ConstructableBean", Object.class);


        cf.addField("_stringValue", String.class);
        cf.addConstructor(new Class[] { String.class }, null, "{ _stringValue = $1; }");


        MethodSignature getStringValue = new MethodSignature(String.class, "getStringValue", null, null);


        cf.addMethod(Modifier.PUBLIC, getStringValue, "return _stringValue;");


        Class targetClass = cf.createClass();


        try
        {
            targetClass.newInstance();
            unreachable();

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Examples of org.apache.tapestry5.ioc.services.ClassFab

    private Object createProxyInstance(ObjectCreator creator, String serviceId, Class serviceInterface,
            Class serviceImplementation, String description)
    {
        ServiceProxyToken token = SerializationSupport.createToken(serviceId);


        ClassFab classFab = registry.newClass(serviceInterface);


        classFab.addField("creator", Modifier.PRIVATE | Modifier.FINAL, ObjectCreator.class);
        classFab.addField("token", Modifier.PRIVATE | Modifier.FINAL, ServiceProxyToken.class);


        classFab.addConstructor(new Class[]
        { ObjectCreator.class, ServiceProxyToken.class }, null, "{ creator = $1; token = $2; }");


        // Make proxies serializable by writing the token to the stream.


        classFab.addInterface(Serializable.class);


        // This is the "magic" signature that allows an object to substitute some other
        // object for itself.
        MethodSignature writeReplaceSig = new MethodSignature(Object.class, "writeReplace", null, new Class[]
        { ObjectStreamException.class });


        classFab.addMethod(Modifier.PRIVATE, writeReplaceSig, "return token;");


        // Now delegate all the methods.


        String body = format("return (%s) creator.createObject();", serviceInterface.getName());


        MethodSignature sig = new MethodSignature(serviceInterface, "delegate", null, null);


        classFab.addMethod(Modifier.PRIVATE, sig, body);


        classFab.proxyMethodsToDelegate(serviceInterface, "delegate()", description);


        if (serviceImplementation != null)
        {
            classFab.copyClassAnnotationsFromDelegate(serviceImplementation);


            classFab.copyMethodAnnotationsFromDelegate(serviceInterface, serviceImplementation);
        }


        Class proxyClass = classFab.createClass();


        try
        {
            return proxyClass.getConstructors()[0].newInstance(creator, token);
        }

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