Examples with ClassPool javassist.ClassPool used on opensource projects

Example 96 with ClassPool

use of javassist.ClassPool in project restfulie-java by caelum.

the class DefaultEnhancer method enhanceResource.

public <T> Class enhanceResource(Class<T> originalType) {
    ClassPool pool = ClassPool.getDefault();
    if (pool.find(DefaultEnhancer.class.getName()) == null) {
        pool.appendClassPath(new LoaderClassPath(getClass().getClassLoader()));
    }
    try {
        // TODO extract this enhancement to an interface and test it appart
        CtClass newType = pool.makeClass(generateNewUniqueClassName(originalType));
        newType.setSuperclass(pool.get(originalType.getName()));
        newType.addInterface(pool.get(Resource.class.getName()));
        enhanceLinks(newType);
        return newType.toClass();
    } catch (NotFoundException e) {
        throw new IllegalStateException("Unable to extend type " + originalType.getName(), e);
    } catch (CannotCompileException e) {
        throw new IllegalStateException("Unable to extend type " + originalType.getName(), e);
    }
}

Example 97 with ClassPool

use of javassist.ClassPool in project dubbo by alibaba.

the class ClassGenerator method getClassPool.

public static ClassPool getClassPool(ClassLoader loader) {
    if (loader == null) {
        return ClassPool.getDefault();
    }
    ClassPool pool = POOL_MAP.get(loader);
    if (pool == null) {
        pool = new ClassPool(true);
        pool.appendClassPath(new CustomizedLoaderClassPath(loader));
        POOL_MAP.put(loader, pool);
    }
    return pool;
}

Example 98 with ClassPool

use of javassist.ClassPool in project ignite by apache.

the class BinaryObjectToStringTest method newExtInstance1.

/**
 */
private Object newExtInstance1() throws Exception {
    ClassPool classPool = new ClassPool(ClassPool.getDefault());
    CtClass aClass = classPool.makeClass("ExternalTestClass1");
    aClass.addInterface(classPool.get("java.io.Externalizable"));
    aClass.addField(CtField.make("private int x;", aClass));
    aClass.addConstructor(CtNewConstructor.make("public ExternalTestClass1() {}", aClass));
    aClass.addConstructor(CtNewConstructor.make("public ExternalTestClass1(int x0) { x = x0; }", aClass));
    aClass.addMethod(CtNewMethod.make("public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException { out.writeInt(x); }", aClass));
    aClass.addMethod(CtNewMethod.make("public void readExternal(java.io.ObjectInput in) throws java.io.IOException { x = in.readInt(); }", aClass));
    ClassLoader extClsLdr = new ClassLoader() {

        {
            byte[] bytecode = aClass.toBytecode();
            defineClass("ExternalTestClass1", bytecode, 0, bytecode.length);
        }
    };
    Class<?> extClass = extClsLdr.loadClass("ExternalTestClass1");
    Constructor<?> ctor = extClass.getConstructor(int.class);
    return ctor.newInstance(42);
}

Example 99 with ClassPool

use of javassist.ClassPool in project ignite by apache.

the class BinaryObjectToStringTest method newExtInstance2.

/**
 */
private Object newExtInstance2() throws Exception {
    ClassPool classPool = new ClassPool(ClassPool.getDefault());
    CtClass aClass = classPool.makeClass("ExternalTestClass2");
    aClass.addInterface(classPool.get("java.io.Serializable"));
    aClass.addField(CtField.make("private int x;", aClass));
    aClass.addConstructor(CtNewConstructor.make("public ExternalTestClass2() {}", aClass));
    aClass.addConstructor(CtNewConstructor.make("public ExternalTestClass2(int x0) { x = x0; }", aClass));
    aClass.addMethod(CtNewMethod.make("private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException { out.writeInt(x); }", aClass));
    aClass.addMethod(CtNewMethod.make("private void readObject(java.io.ObjectInputStream in) throws java.io.IOException { x = in.readInt(); }", aClass));
    ClassLoader extClsLdr = new ClassLoader() {

        {
            byte[] bytecode = aClass.toBytecode();
            defineClass("ExternalTestClass2", bytecode, 0, bytecode.length);
        }
    };
    Class<?> extClass = extClsLdr.loadClass("ExternalTestClass2");
    Constructor<?> ctor = extClass.getConstructor(int.class);
    return ctor.newInstance(42);
}

Example 100 with ClassPool

use of javassist.ClassPool in project ignite by apache.

the class ConfigVariationsTestSuiteBuilder method makeTestClass.

/**
 * Creates test class for given config variation.
 *
 * @param pkg Package to put class in.
 * @param cfg Config variation.
 * @return Test class.
 */
private Class<?> makeTestClass(String pkg, VariationsTestsConfig cfg) {
    int idx = cntr.getAndIncrement();
    String clsName = cls.getSimpleName() + "_" + idx;
    cfgs.put(clsName, cfg);
    ClassPool cp = ClassPool.getDefault();
    cp.insertClassPath(new ClassClassPath(ConfigVariationsTestSuiteBuilder.class));
    CtClass cl = cp.makeClass(pkg + "." + clsName);
    try {
        cl.setSuperclass(cp.get(cls.getName()));
        cl.addConstructor(CtNewConstructor.make("public " + clsName + "() { " + "this.testsCfg = " + ConfigVariationsTestSuiteBuilder.class.getName() + ".getCfg(\"" + clsName + "\"); " + "}", cl));
        return cl.toClass();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}