com.sun.xml.ws.api.server.AbstractInstanceResolver Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.ws.api.server;
import com.sun.istack.Nullable;
import com.sun.istack.localization.Localizable;
import com.sun.xml.ws.api.server.InstanceResolver;
import com.sun.xml.ws.api.server.ResourceInjector;
import com.sun.xml.ws.api.server.WSEndpoint;
import com.sun.xml.ws.resources.ServerMessages;
import com.sun.xml.ws.server.ServerRtException;
import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
/**
* Partial implementation of {@link InstanceResolver} with
* convenience methods to do the resource injection.
*
* @author Kohsuke Kawaguchi
* @since 2.2.6
*/
public abstract class AbstractInstanceResolver extends InstanceResolver {
protected static ResourceInjector getResourceInjector(WSEndpoint endpoint) {
ResourceInjector ri = endpoint.getContainer().getSPI(ResourceInjector.class);
if(ri==null)
ri = ResourceInjector.STANDALONE;
return ri;
}
/**
* Helper for invoking a method with elevated privilege.
*/
protected static void invokeMethod(final @Nullable Method method, final Object instance, final Object... args) {
if(method==null) return;
AccessController.doPrivileged(new PrivilegedAction() {
public Void run() {
try {
if (!method.isAccessible()) {
method.setAccessible(true);
}
MethodUtil.invoke(instance,method, args);
} catch (IllegalAccessException e) {
throw new ServerRtException("server.rt.err",e);
} catch (InvocationTargetException e) {
throw new ServerRtException("server.rt.err",e);
}
return null;
}
});
}
/**
* Finds the method that has the given annotation, while making sure that
* there's only at most one such method.
*/
protected final @Nullable Method findAnnotatedMethod(Class clazz, Class annType) {
boolean once = false;
Method r = null;
for(Method method : clazz.getDeclaredMethods()) {
if (method.getAnnotation(annType) != null) {
if (once)
throw new ServerRtException(ServerMessages.ANNOTATION_ONLY_ONCE(annType));
if (method.getParameterTypes().length != 0)
throw new ServerRtException(ServerMessages.NOT_ZERO_PARAMETERS(method));
r = method;
once = true;
}
}
return r;
}
}