Examples of com.atomikos.datasource.RecoverableResource

com.atomikos.datasource.RecoverableResource
A Recoverable Resource is the abstraction of a resource that supports recoverable work (i.e., that supports Participant instances). Its primary use is for Participant instances that are not self-containing, as for instance in XA transactions (where the Participant can not contain the entire transaction context of the server, but only an external reference to it in the form of an Xid instance). A recoverable resource is invoked at recovery time by its own Participant instances (typically in the readExternal method), who iteratively ask each resource in the com.atomikos.icatch.Configuration whether or not they can be recovered by them. At the end of recovery, the TM will invoke the endRecovery method, to indicate to the resource that whatever private logs it has, any remaining and non-recovered participants should be aborted.


        // Ask the Configuration for all current resources, since
        // newly added ones are not known at init.
        Enumeration resources = Configuration.getResources ();
        while ( resources.hasMoreElements () ) {
            RecoverableResource res = (RecoverableResource) resources
                    .nextElement ();


            Configuration.removeResource ( res.getName () );
            try {
                res.close ();
            } catch ( ResourceException re ) {


              //Issue 10038:
              //Ignore errors in force mode: force is most likely
              //during VM exit; in that case interleaving of shutdown hooks

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                    }
                }


                Enumeration reslist = Configuration.getResources ();
                while ( reslist.hasMoreElements () ) {
                    RecoverableResource res = (RecoverableResource) reslist
                            .nextElement ();
                    try {
                        res.endRecovery ();
                    } catch ( Exception error ) {
                        LOGGER.logWarning ( "ERROR IN RECOVERY", error );
                        // continue processing to avoid indoubts for other resources
                    }
                }

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  private static void purgeResources ()
    {
        Enumeration enumm = getResources ();
        while ( enumm.hasMoreElements () ) {
            RecoverableResource res = (RecoverableResource) enumm.nextElement ();
            if ( res.isClosed () )
                removeResource ( res.getName () );
        }
    }

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        recoveryService_ = service;
        if ( service != null ) {
            // notify all currently registered resources
            Enumeration resources = getResources ();
            while ( resources.hasMoreElements () ) {
                RecoverableResource next = (RecoverableResource) resources
                        .nextElement ();
                next.setRecoveryService ( service );


            }


        }
    }

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     * @return RecoverableResource The removed object.
     */


    public static RecoverableResource removeResource ( String name )
    {
        RecoverableResource ret = null;
        if ( name != null ) {
          ret = (RecoverableResource) resources_.remove ( name );
          if ( ret != null ) resourceList_.remove ( ret );


        }

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     *            The name to find.
     */


    public static RecoverableResource getResource ( String name )
    {
        RecoverableResource res = null;
        if ( name != null ) res = (RecoverableResource) resources_.get ( name );
        return res;
    }

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    } catch ( NameNotFoundException e ) {
      //ignore but log
      if ( LOGGER.isDebugEnabled() ) LOGGER.logDebug ( this + ": error removing from JNDI" , e );
    }
    
    RecoverableResource res = Configuration.getResource ( getUniqueResourceName() );
    if ( res != null ) {
      Configuration.removeResource ( getUniqueResourceName() );
      //fix for case 26005: close resource!
      res.close();
    }
    
    if ( LOGGER.isDebugEnabled() ) LOGGER.logDebug ( this + ": close done." );
  }

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      return cf;
  }
  
  protected void doClose() 
  {
    RecoverableResource res = Configuration.getResource ( getUniqueResourceName() );
    if ( res != null ) {
      Configuration.removeResource ( getUniqueResourceName() );
      //fix for case 26005
      res.close();
    }
  }

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        // If so, each resource needs to know that the XID
        // can be recovered, or endRecovery in one of them
        // will incorrectly rollback


        while ( resources.hasMoreElements () ) {
            RecoverableResource res = (RecoverableResource) resources
                    .nextElement ();
            if ( res.recover ( this ) ) {
                recovered = true;
            }


        }

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    } catch ( NameNotFoundException e ) {
      //ignore but log
      if ( Configuration.isDebugLoggingEnabled() ) Configuration.logDebug ( this + ": error removing from JNDI" , e );
    }
    
    RecoverableResource res = Configuration.getResource ( getUniqueResourceName() );
    if ( res != null ) {
      Configuration.removeResource ( getUniqueResourceName() );
      //fix for case 26005: close resource!
      res.close();
    }
    
    if ( Configuration.isDebugLoggingEnabled() ) Configuration.logDebug ( this + ": close done." );
  }

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