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package com.sun.enterprise.resource.rm;

import com.sun.enterprise.resource.ResourceHandle;
import com.sun.appserv.connectors.internal.api.PoolingException;
import com.sun.logging.LogDomains;

import jakarta.transaction.Transaction;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Resource Manager for a resource request from a component
 * that is not to be associated with a transaction.
 *
 * @author Aditya Gore
 */
public class NoTxResourceManagerImpl implements ResourceManager {


    private static Logger _logger;

    static {
        _logger = LogDomains.getLogger(NoTxResourceManagerImpl.class, LogDomains.RSR_LOGGER);
    }

    /**
     * Returns null since this connection is outside any tx context
     *
     * @throws PoolingException when unable to get current transaction
     */
    public Transaction getTransaction() throws PoolingException {
        return null;
    }

    /**
     * Returns the component invoking resource request.
     *
     * @return Handle to the component
     */
    public Object getComponent() {
        return null;
    }

    /**
     * Enlist the ResourceHandle in the transaction
     * This implementation of the method is expected to be a no-op
     *
     * @param h ResourceHandle object
     * @throws PoolingException when unable to enlist resource
     */
    public void enlistResource(ResourceHandle h) throws PoolingException {
        logFine("NoTxResourceManagerImpl :: enlistResource called");
    }

    /**
     * Register the ResourceHandle in the transaction
     * This implementation of the method is expected to be a no-op
     *
     * @param handle ResourceHandle object
     * @throws PoolingException when unable to register resource
     */
    public void registerResource(ResourceHandle handle)
            throws PoolingException {
        logFine("NoTxResourceManagerImpl :: registerResource called");
    }

    /**
     * Get's the component's transaction and marks it for rolling back.
     * This implementation of the method is expected to be a no-op
     */
    public void rollBackTransaction() {
        logFine("rollBackTransaction called in NoTxResourceManagerImpl");
    }

    /**
     * delist the ResourceHandle from the transaction
     * This implementation of the method is expected to be a no-op
     *
     * @param resource  ResourceHandle object
     * @param xaresFlag flag indicating transaction success. This can
     *                  be XAResource.TMSUCCESS or XAResource.TMFAIL
     */
    public void delistResource(ResourceHandle resource, int xaresFlag) {
        logFine("NoTxResourceManagerImpl :: delistResource called");
    }

    /**
     * Unregister the ResourceHandle from the transaction
     * This implementation of the method is expected to be a no-op
     *
     * @param resource  ResourceHandle object
     * @param xaresFlag flag indicating transaction success. This can
     *                  be XAResource.TMSUCCESS or XAResource.TMFAIL
     */
    public void unregisterResource(ResourceHandle resource, int xaresFlag) {
        logFine("NoTxResourceManagerImpl :: unregisterResource called");
    }

    public void logFine(String message) {
        if (_logger.isLoggable(Level.FINE)) {
            _logger.fine(message);
        }
    }
}