org.jboss.ejb.server.InvocationRequest 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.server;
import java.io.IOException;
import java.util.Map;
import jakarta.transaction.SystemException;
import jakarta.transaction.Transaction;
import org.jboss.ejb.client.Affinity;
import org.jboss.ejb.client.EJBLocator;
import org.jboss.ejb.client.EJBMethodLocator;
import org.wildfly.common.annotation.NotNull;
/**
* An Enterprise Bean method invocation request.
*
* @author David M. Lloyd
*/
public interface InvocationRequest extends Request {
/**
* Get the resolved content of the request.
*
* @param classLoader the class loader to use to resolve the request
* @return the request content
* @throws IOException if the request content failed to be deserialized
* @throws ClassNotFoundException if a class in the request content failed to be found in the given class loader
*/
Resolved getRequestContent(ClassLoader classLoader) throws IOException, ClassNotFoundException;
/**
* Get the Enterprise Beans method locator.
*
* @return the Enterprise Beans method locator (must not be {@code null})
*/
@NotNull
EJBMethodLocator getMethodLocator();
/**
* Write a message indicating that the method is not found on the Enterprise Beans. The request should be abandoned after
* invoking this method.
*/
void writeNoSuchMethod();
/**
* Write a message indicating that the session is inactive. The request should be abandoned after
* invoking this method.
*/
void writeSessionNotActive();
/**
* Write a message indicating that this is an async request. If this is not required by the underlying protocol then
* this may be a noop
*/
default void writeProceedAsync() {}
/**
* The resolved content of the request.
*/
interface Resolved {
/**
* Get the invocation attachment map. The serializable attachments will be returned to the client.
*
* @return the invocation attachment map (must not be {@code null})
*/
@NotNull
Map getAttachments();
/**
* Get the method invocation parameters.
*
* @return the method invocation parameters (must not be {@code null})
*/
@NotNull
Object[] getParameters();
/**
* Get the Enterprise Beans locator of the request. This contains the same identifier as is returned with
* {@link #getEJBIdentifier()}, but of a type corresponding to the Enterprise Beans type, and with a resolved Enterprise Beans class
* and affinity.
*
* @return the Enterprise Beans locator (must not be {@code null})
*/
@NotNull
EJBLocator getEJBLocator();
/**
* Get the weak affinity of the request.
*
* @return the weak affinity of the request (must not be {@code null})
*/
@NotNull
default Affinity getWeakAffinity() {
return Affinity.NONE;
}
/**
* Determine if the request has a transaction.
*
* @return {@code true} if there is a transaction context with this request
*/
boolean hasTransaction();
/**
* Get the inflowed transaction of the request. This should not be called unless it is desired to actually inflow
* the transaction; doing so without using the transaction will cause needless work for the transaction coordinator.
* To perform transaction checks, use {@link #hasTransaction()} first. This method should only be called one time
* as it will inflow the transaction when called.
*
* If a transaction is present but transaction inflow has failed, a {@link SystemException} is thrown. In this case,
* the invocation should fail.
*
* It is the caller's responsibility to check the status of the returned transaction to ensure that it is in an
* active state; failure to do so can result in undesirable behavior.
*
* @return the transaction, or {@code null} if there is none for the request
* @throws SystemException if inflowing the transaction failed
* @throws IllegalStateException if this method is called more than one time
*/
Transaction getTransaction() throws SystemException, IllegalStateException;
/**
* Write the invocation result message.
*
* @param result the invocation result
*/
void writeInvocationResult(Object result);
}
}