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PHPJavaBridge server (soluble fork)
/*-*- mode: Java; tab-width:8 -*-*/
package io.soluble.pjb.bridge;
/*
* Copyright (C) 2003-2007 Jost Boekemeier
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Arrays;
import java.util.Map;
/**
* This class takes the supplied PHP environment and creates a dynamic
* proxy for calling PHP code.
*/
public final class PhpProcedure implements InvocationHandler {
private IJavaBridgeFactory bridge;
private long object;
private Map names;
protected String name;
protected PhpProcedure(IJavaBridgeFactory bridge, long object, String name, Map names) {
this.bridge = bridge;
this.object = object;
this.names = names;
this.name = name;
}
/**
* Called from java_closure().
*
* @param bridge - The request handling bridge
* @param name - The name, e.g. java_closure($this, "alwaysCallMe")
* @param names - A map of names, e.g. java_closure($this, array("javaName1" => "php_name1", ...);
* @param interfaces - The list of interfaces that this proxy must implement, may be empty. E.g.
* java_closure($this, null, null, array(new Java("java.awt.event.ActionListener"));
* @param object - An opaque object ID (protocol-level).
* @return A new proxy instance.
*/
protected static Object createProxy(IJavaBridgeFactory bridge, String name, Map names, Class interfaces[], long object) {
PhpProcedure handler = new PhpProcedure(bridge, object, name, names);
ClassLoader loader = Util.getContextClassLoader();
Object proxy = Proxy.newProxyInstance(loader, interfaces, handler);
return proxy;
}
/**
* Called from getInterface().
*
* @param interfaces - The list of interfaces that this proxy must implement, may be empty.
* @param proc - A procedure obtained from java_closure().
* @return A new proxy instance.
*/
public static Object createProxy(Class interfaces[], PhpProcedure proc) {
return createProxy(proc.bridge, proc.name, proc.names, interfaces, proc.object);
}
private Object invoke(Object proxy, String method, Class returnType, Object[] args) throws Throwable {
JavaBridge bridge = this.bridge.getBridge();
if (bridge.logLevel > 3) bridge.logDebug("invoking callback: " + method);
String cname;
if (name != null) {
cname = name;
} else {
cname = (String) names.get(method);
if (cname == null) cname = method;
}
bridge.request.response.setResultProcedure(object, cname, method, args);
Object[] result = bridge.request.handleSubRequests();
if (bridge.logLevel > 3) bridge.logDebug("result from cb: " + Arrays.asList(result));
return bridge.coerce(returnType, result[0], bridge.request.response);
}
private void checkPhpContinuation() throws IllegalStateException {
if (bridge.isNew())
throw new IllegalStateException("Cannot call closure anymore: the closed-over PHP script continuation has been terminated.");
}
/**
* Invoke a PHP function or a PHP method.
*
* @param proxy The php environment or the PHP object
* @param method The php method name
* @param args the arguments
* @return the result or null.
* @throws Throwable script exception.
*/
public Object invoke(Object proxy, String method, Object[] args) throws Throwable {
checkPhpContinuation();
return invoke(proxy, method, Object.class, args);
}
/**
* {@inheritDoc}
*/
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
checkPhpContinuation();
return invoke(proxy, method.getName(), method.getReturnType(), args);
}
static long unwrap(Object ob) {
InvocationHandler handler = Proxy.getInvocationHandler(ob);
PhpProcedure proc = (PhpProcedure) handler;
return proc.object;
}
}