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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 2016 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.wildfly.transaction.client;

import jakarta.transaction.Transaction;
import javax.transaction.xa.XAException;
import javax.transaction.xa.XAResource;
import javax.transaction.xa.Xid;

import org.wildfly.common.annotation.NotNull;

/**
 * The API which must be implemented by transaction providers that support transaction inflow.
 *
 * @author David M. Lloyd
 */
public interface XAImporter extends XARecoverable {
    /**
     * Import a transaction.  If the transaction already exists, it should be returned, otherwise a new transaction
     * should be initiated with the given timeout (in seconds).
     *
     * @param xid the transaction ID (must not be {@code null})
     * @param timeout the remaining transaction timeout, or 0 if the default should be used
     * @param doNotImport {@code true} to indicate that a non-existing transaction should not be imported, {@code false} otherwise
     * @return the transaction import result, or {@code null} if (and only if) {@code doNotImport} is {@code true} and the transaction didn't exist locally
     * @throws XAException if the import failed for some reason
     */
    ImportResult findOrImportTransaction(Xid xid, int timeout, final boolean doNotImport) throws XAException;

    /**
     * Find an existing transaction on this system.  If no such transaction exists, {@code null} is returned.  Normally
     * the transaction is located only by global ID.
     *
     * @param xid the XID to search for (must not be {@code null})
     * @return the transaction object, or {@code null} if the transaction is not known
     * @throws XAException if the transaction manager failed for some reason
     */
    Transaction findExistingTransaction(Xid xid) throws XAException;

    /**
     * Commit an imported (typically prepared) transaction.
     *
     * @param xid the transaction ID (must not be {@code null})
     * @param onePhase {@code true} to perform prepare and commit in one operation, {@code false} otherwise
     * @throws XAException if the operation fails for some reason
     */
    void commit(Xid xid, boolean onePhase) throws XAException;

    /**
     * Forget an imported, prepared transaction.
     *
     * @param xid the transaction ID (must not be {@code null})
     * @throws XAException if the operation fails for some reason
     */
    void forget(Xid xid) throws XAException;

    /**
     * Initiate a recovery scan.
     *
     * @param flag one of {@link XAResource#TMSTARTRSCAN}, {@link XAResource#TMNOFLAGS}, or {@link XAResource#TMENDRSCAN}
     * @param parentName the name of the node to recover on behalf of, or {@code null} for all
     * @return the array of recovered XIDs (may be {@link SimpleXid#NO_XIDS}, must not be {@code null})
     * @throws XAException if the operation fails for some reason
     */
    @NotNull
    Xid[] recover(int flag, String parentName) throws XAException;
}




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