org.wickedsource.docxstamper.proxy.ContextFactory Maven / Gradle / Ivy

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Template engine for .docx documents.

There is a newer version: 1.2.2

package org.wickedsource.docxstamper.proxy;

import javassist.util.proxy.ProxyFactory;
import org.wickedsource.docxstamper.api.commentprocessor.ICommentProcessor;

public class ContextFactory {

    /**
     * Creates a proxy object that is able to answer calls to all methods defined in the specified root object
     * as well as all methods defined in the specified interface class.
     *
     * @param root           the root object which is extended to support the specified interface.
     * @param interfaceClass the interface by which the root object is to be extended.
     * @param interfaceImpl  object implementing the specified interface. Calls on the interface are delegated to this object.
     * @return a proxy object implementing the interface of the specified root object as well as the specified interface class.
     * @throws Exception in case a proxy could not be created.
     */
    @SuppressWarnings("unchecked")
    public T createProxy(T root, Class interfaceClass, ICommentProcessor interfaceImpl) throws ProxyException {
        try {
            ProxyMethodHandler methodHandler = new ProxyMethodHandler(root, interfaceClass, interfaceImpl);
            ProxyFactory proxyFactory = new ProxyFactory();
            proxyFactory.setSuperclass(root.getClass());
            proxyFactory.setInterfaces(new Class[]{interfaceClass});
            return (T) proxyFactory.create(new Class[0], new Object[0], methodHandler);
        } catch (Exception e) {
            throw new ProxyException(e);
        }
    }

}