Java GroovyObject.getMetaClass方法代碼示例

import groovy.lang.GroovyObject; //導入方法依賴的package包/類
@Override
public void customize(GroovyObject goo) {
	DelegatingMetaClass dmc = new DelegatingMetaClass(goo.getMetaClass()) {
		@Override
		public Object invokeMethod(Object arg0, String mName, Object[] arg2) {
			if (mName.contains("Missing")) {
				throw new IllegalStateException("Gotcha");
			}
			else {
				return super.invokeMethod(arg0, mName, arg2);
			}
		}
	};
	dmc.initialize();
	goo.setMetaClass(dmc);
}
 

import groovy.lang.GroovyObject; //導入方法依賴的package包/類
private CallSite createPogoMetaClassGetPropertySite(GroovyObject receiver) {
    MetaClass metaClass = receiver.getMetaClass();

    CallSite site;
    if (metaClass.getClass() != MetaClassImpl.class || GroovyCategorySupport.hasCategoryInCurrentThread()) {
        site = new PogoMetaClassGetPropertySite(this, metaClass);
    } else {
        final MetaProperty effective = ((MetaClassImpl) metaClass).getEffectiveGetMetaProperty(this.array.owner, receiver, name, false);
        if (effective != null) {
            if (effective instanceof CachedField)
                site = new GetEffectivePogoFieldSite(this, metaClass, (CachedField) effective);
            else
                site = new GetEffectivePogoPropertySite(this, metaClass, effective);
        } else {
            site = new PogoMetaClassGetPropertySite(this, metaClass);
        }
    }

    array.array[index] = site;
    return site;
}
 

import groovy.lang.GroovyObject; //導入方法依賴的package包/類
private static CallSite createCallCurrentSite(CallSite callSite, GroovyObject receiver, Object[] args, Class sender) {
    CallSite site;
    if (receiver instanceof GroovyInterceptable)
      site = new PogoInterceptableSite(callSite);
    else {
        MetaClass metaClass = receiver.getMetaClass();
        if (receiver.getClass() != metaClass.getTheClass() && !metaClass.getTheClass().isInterface()) {
            site = new PogoInterceptableSite(callSite);
        }
        else
            if (metaClass instanceof MetaClassImpl) {
                site = ((MetaClassImpl)metaClass).createPogoCallCurrentSite(callSite, sender, args);
            }
            else
              site = new PogoMetaClassSite(callSite, metaClass);
    }

    replaceCallSite(callSite, site);
    return site;
}
 

import groovy.lang.GroovyObject; //導入方法依賴的package包/類
public static Object invokeMethodOnSuperN(Class senderClass, GroovyObject receiver, String messageName, Object[] messageArguments) throws Throwable {
    MetaClass metaClass = receiver.getMetaClass();
    // ignore interception and missing method fallback
    Object result = null;
    try {
        result = metaClass.invokeMethod(senderClass, receiver, messageName, messageArguments, true, true);
    } catch (GroovyRuntimeException gre) {
        throw unwrap(gre);
    }
    return result;
}
 

import groovy.lang.GroovyObject; //導入方法依賴的package包/類
private MetaClass lookupObjectMetaClass(Object object) {
    if (object instanceof GroovyObject) {
        GroovyObject go = (GroovyObject) object;
        return go.getMetaClass();
    }
    Class ownerClass = object.getClass();
    if (ownerClass == Class.class) {
        ownerClass = (Class) object;
        return registry.getMetaClass(ownerClass);
    }
    MetaClass metaClass = InvokerHelper.getMetaClass(object);
    return metaClass;
}
 

import groovy.lang.GroovyObject; //導入方法依賴的package包/類
public void testCompile() throws Exception {
    Class groovyClass = loader.parseClass(new File("src/test/org/codehaus/groovy/classgen/Main.groovy"));

    System.out.println("Invoking main...");

    GroovyObject object = (GroovyObject) groovyClass.newInstance();

    assertTrue(object != null);

    MetaClass metaClass = object.getMetaClass();
    System.out.println("Metaclass: " + metaClass);

    Class type = object.getClass();
    System.out.println("Type: " + type);

    // invoke via metaclass
    metaClass.invokeMethod(object, "main", null);

    // invoke directly
    object.invokeMethod("main", null);
}