Examples of org.jboss.dashboard.database.hibernate.HibernateTxFragment

Package org.jboss.dashboard.database.hibernate

Examples of org.jboss.dashboard.database.hibernate.HibernateTxFragment

org.jboss.dashboard.database.hibernate.HibernateTxFragment
ne the transaction fragment final String finalVar = ""; new HibernateTxFragment() { new HibernateTxFragment(false, true) { // Activate callback methods afterXXX/beforeXXX. new HibernateTxFragment(true, false) { // Open a brand new transaction. protected void txFragment(Session session) throws Exception { // Transactional block // ... finalVar = ""; // Forbidden sentence }}.execute();
IMPORTANT NOTE: All variables accessed inside the transaction fragment block must be defined as final because a inner class can't change the reference to a variable defined into its scope.
Another issue to be considered is what happens when a fragment needs to return a value from txFragment method. Use an array or collection to store the return value(s):
```
 final Object[] result = new Object[] {null}; new HibernateTxFragment() { protected void txFragment(Session session) throws Exception { // ... result[0] = ...; }}.execute(); return result[0]; 
```
The variable result can be an array or a collection or any other structure where we can store the results to be returned by the fragment block.

        currentNodeIpAddress = getIPAddress();


        log.info("Registering cluster node with ip address " + currentNodeIpAddress);


        final ClusterNode[] result = new ClusterNode[1];
        new HibernateTxFragment(true, true) {
            protected void txFragment(Session session) throws Exception {


                // Check if the node is already regisitered from a previous execution.
                ClusterNode node = getNodeByIpAddress(currentNodeIpAddress);

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            return;
        }


        log.info("Deregistering cluster node with id " + nodeId);


        new HibernateTxFragment(true, true) {
            protected void txFragment(Session session) throws Exception {
                // Delete the cluster node register.
                Query query = session.createQuery("delete from " + ClusterNode.class.getName() +" cn  where cn.id = :idNode");
                query.setLong("idNode", nodeId);
                query.executeUpdate();

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     * @throws Exception Error searching for a cluster node by status.
     */
    public List<ClusterNode> getNodeByStatus(final ClusterNode.ClusterNodeStatus status) throws  Exception {
        final List<ClusterNode> result = new ArrayList<ClusterNode>();
        if (status != null) {
            new HibernateTxFragment() {
                protected void txFragment(Session session) throws Exception {
                    Query query = session.createQuery("from " + ClusterNode.class.getName() +" cn  where cn.nodeStatus = :nStatus");
                    query.setString("nStatus", status.name());
                    List queryResult = query.list();

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     * @throws Exception Error searching for a cluster node by identifier.
     */
    public ClusterNode getNodeById(final Long id) throws  Exception {
        final ClusterNode[] result = new ClusterNode[1];
        if (id != null) {
            new HibernateTxFragment() {
                protected void txFragment(Session session) throws Exception {
                    Query query = session.createQuery("from " + ClusterNode.class.getName() +"  cn  where cn.id = :idToSearch");
                    query.setLong("idToSearch", id);
                    List queryResult = query.list();

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     * @throws Exception Error searching for a cluster node by ip address.
     */
    public ClusterNode getNodeByIpAddress(final String ip) throws  Exception {
        final ClusterNode[] result = new ClusterNode[1];
        if (ip != null) {
            new HibernateTxFragment() {
                protected void txFragment(Session session) throws Exception {
                    Query query = session.createQuery("from " + ClusterNode.class.getName() +"  cn  where cn.nodeAddress = :ipToSearch");
                    query.setString("ipToSearch", ip);
                    List queryResult = query.list();

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     *
     * @param nodeId The node identifier.
     * @param newStatus The new status to set.
     */
    public void setNodeStatus(final Long nodeId, final ClusterNode.ClusterNodeStatus newStatus) throws Exception{
        new HibernateTxFragment() {
            protected void txFragment(Session session) throws Exception {
                ClusterNode node = getNodeById(nodeId);


                if (node == null) {
                    log.error("Cannot set status " + newStatus.name() + " to target node. Node with identifier " + nodeId + " not found.");

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     * @return If this node should install initial modules.
     */
    public boolean shouldInstallModules() throws Exception {
        final Boolean[] result = new Boolean[1];
        result[0] = true;
        new HibernateTxFragment(true, true) {
            protected void txFragment(Session session) throws Exception {
                List<ClusterNode> installingModulesNodes = getNodeByStatus(ClusterNode.ClusterNodeStatus.INSTALLING_MODULES);
                if (installingModulesNodes != null && !installingModulesNodes.isEmpty()) {
                    if (installingModulesNodes.size() > 1) {
                        log.warn("More than one cluster node status is INSTALLING_MODULES. This situation can be produced due to a failured previous installation.");

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    }


    public synchronized void execute(final SchedulerTask task, boolean onlyIfCommit) {
        try {
            if (onlyIfCommit) {
                new HibernateTxFragment(false, true) {
                protected void beforeCommit() throws Throwable {
                    _schedule(task, null);
                }}.execute();
            } else {
                _schedule(task, null);

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                return;
            }


            List<InitialModule> modules = initialModuleRegistry.getInitialModulesRegistered();
            for (final InitialModule module : modules) {
                new HibernateTxFragment(true) {
                    protected void txFragment(Session session) throws Exception {
                        InstalledModule currentVersion = (InstalledModule) session.get(InstalledModule.class, module.getName(), LockOptions.UPGRADE);


                        // The module is not registered => Install it!
                        if (currentVersion == null) {

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     * IMPORTANT NOTE: Perform the change node status in bbdd in a new transaction.
     *
     * NOTE: BZ-1014612
     */
    protected void finishInstallation() throws Exception {
        new HibernateTxFragment(true) {
            protected void txFragment(Session session) throws Exception {
                clusterNodesManager.setCurrentNodeStatus(ClusterNode.ClusterNodeStatus.REGISTERED);
            }


        }.execute();

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org.hibernate.jdbc.Work

org.jboss.dashboard.cluster.ClusterNodesManager

org.jboss.dashboard.commons.events.Publisher

org.jboss.dashboard.database.DatabaseAutoSynchronizer

org.jboss.dashboard.database.DataSourceEntry

org.jboss.dashboard.database.DataSourceFragment

org.jboss.dashboard.database.DataSourceManager

org.jboss.dashboard.database.ExternalDataSource

org.jboss.dashboard.database.LocalDataSource

org.jboss.dashboard.factory.InitialModule

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