org.jboss.ejb.client.EJBReceiver Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
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/*
* JBoss, Home of Professional Open Source.
* Copyright 2017 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.ejb.client;
import java.net.InetSocketAddress;
import java.net.URI;
import org.wildfly.common.Assert;
/**
* A receiver for Enterprise Beans invocations. Receivers can be associated with one or more client contexts. This interface is
* implemented by providers for Enterprise Beans invocation services.
*
* @author David M. Lloyd
*/
public abstract class EJBReceiver extends Attachable {
/**
* Construct a new instance.
*/
protected EJBReceiver() {
}
/**
* Process the invocation. Implementations of this method should always execute the operation asynchronously. The
* operation result should be passed in to the receiver invocation context. To ensure ideal GC behavior, the
* receiver should discard any reference to the invocation context(s) once the result producer has been set.
*
* @param receiverContext The Enterprise Beans receiver invocation context
* @throws Exception if the operation throws an exception
*/
protected abstract void processInvocation(EJBReceiverInvocationContext receiverContext) throws Exception;
/**
* Attempt to cancel an invocation. Implementations should make a reasonable effort to determine whether
* the operation was actually cancelled; however it is permissible to fall back to returning {@code false} if
* it cannot be discovered.
*
* @param receiverContext the Enterprise Beans receiver invocation context
* @param cancelIfRunning {@code true} to request that the cancellation proceed even if the method is running
* @return {@code true} if the operation was definitely cancelled immediately, {@code false} otherwise
*/
@SuppressWarnings("unused")
protected boolean cancelInvocation(EJBReceiverInvocationContext receiverContext, boolean cancelIfRunning) {
return false;
}
/**
* Creates a session for a stateful session bean represented by the passed app name, module name, distinct name
* and bean name combination. Returns a {@link StatefulEJBLocator} representing the newly created session. The
* returned locator should have the same view type as the requested locator.
*
* @param receiverContext the Enterprise Beans receiver session creation context
* @return the session ID for the newly opened session
* @throws IllegalArgumentException if the session creation request is made for a bean which is not a
* stateful session bean
*/
protected SessionID createSession(final EJBReceiverSessionCreationContext receiverContext) throws Exception {
return createSession$$bridge(receiverContext).getSessionId();
}
/**
* @deprecated Compatibility bridge, remove at Final.
*/
protected StatefulEJBLocator createSession$$bridge(final EJBReceiverSessionCreationContext receiverContext) throws Exception {
throw Assert.unsupported();
}
/**
* Query the expected or actual source IP address configured for the given target URI.
*
* @param destination the supported URI of the peer (not {@code null})
* @return the socket address, or {@code null} if none is known
*/
protected InetSocketAddress getSourceAddress(final InetSocketAddress destination) {
return null;
}
/**
* Determine if the given target URI is "connected". Connectionless or connect-per-request protocols can inherit
* the default, which always returns {@code true}.
*
* @param uri the supported URI of the peer (not {@code null})
* @return {@code true} if the peer is readily available, {@code false} otherwise
*/
protected boolean isConnected(final URI uri) {
return true;
}
}