package org.jboss.resteasy.client.jaxrs;
import org.jboss.resteasy.client.jaxrs.internal.proxy.ClientInvoker;
import org.jboss.resteasy.client.jaxrs.internal.proxy.ClientProxy;
import org.jboss.resteasy.client.jaxrs.internal.proxy.MethodInvoker;
import org.jboss.resteasy.client.jaxrs.internal.proxy.SubResourceInvoker;
import org.jboss.resteasy.util.IsHttpMethod;
import javax.ws.rs.Path;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.MediaType;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.HashMap;
import java.util.Set;
public class ProxyBuilder<T>
{
private final Class<T> iface;
private final ResteasyWebTarget webTarget;
private ClassLoader loader = Thread.currentThread().getContextClassLoader();
private MediaType serverConsumes;
private MediaType serverProduces;
public static <T> ProxyBuilder<T> builder(Class<T> iface, WebTarget webTarget)
{
return new ProxyBuilder<T>(iface, (ResteasyWebTarget)webTarget);
}
@SuppressWarnings("unchecked")
public static <T> T proxy(final Class<T> iface, WebTarget base, final ProxyConfig config)
{
if (iface.isAnnotationPresent(Path.class))
{
Path path = iface.getAnnotation(Path.class);
if (!path.value().equals("") && !path.value().equals("/"))
{
base = base.path(path.value());
}
}
HashMap<Method, MethodInvoker> methodMap = new HashMap<Method, MethodInvoker>();
for (Method method : iface.getMethods())
{
MethodInvoker invoker;
Set<String> httpMethods = IsHttpMethod.getHttpMethods(method);
if ((httpMethods == null || httpMethods.size() == 0) && method.isAnnotationPresent(Path.class) && method.getReturnType().isInterface())
{
invoker = new SubResourceInvoker((ResteasyWebTarget)base, method, config);
}
else
{
invoker = createClientInvoker(iface, method, (ResteasyWebTarget)base, config);
}
methodMap.put(method, invoker);
}
Class<?>[] intfs =
{
iface
};
ClientProxy clientProxy = new ClientProxy(methodMap);
// this is done so that equals and hashCode work ok. Adding the proxy to a
// Collection will cause equals and hashCode to be invoked. The Spring
// infrastructure had some problems without this.
clientProxy.setClazz(iface);
return (T) Proxy.newProxyInstance(config.getLoader(), intfs, clientProxy);
}
private static <T> ClientInvoker createClientInvoker(Class<T> clazz, Method method, ResteasyWebTarget base, ProxyConfig config)
{
Set<String> httpMethods = IsHttpMethod.getHttpMethods(method);
if (httpMethods == null || httpMethods.size() != 1)
{
throw new RuntimeException("You must use at least one, but no more than one http method annotation on: " + method.toString());
}
ClientInvoker invoker = new ClientInvoker(base, clazz, method, config);
invoker.setHttpMethod(httpMethods.iterator().next());
return invoker;
}
private ProxyBuilder(Class<T> iface, ResteasyWebTarget webTarget)
{
this.iface = iface;
this.webTarget = webTarget;
}
public ProxyBuilder<T> classloader(ClassLoader cl)
{
this.loader = cl;
return this;
}
public ProxyBuilder<T> defaultProduces(MediaType type)
{
this.serverProduces = type;
return this;
}
public ProxyBuilder<T> defaultConsumes(MediaType type)
{
this.serverConsumes = type;
return this;
}
public ProxyBuilder<T> defaultProduces(String type)
{
this.serverProduces = MediaType.valueOf(type);
return this;
}
public ProxyBuilder<T> defaultConsumes(String type)
{
this.serverConsumes = MediaType.valueOf(type);
return this;
}
public T build()
{
return proxy(iface, webTarget, new ProxyConfig(loader, serverConsumes, serverProduces));
}
}