Examples of org.impalaframework.module.RootModuleDefinition

org.impalaframework.module.RootModuleDefinition
Extension of {@link ModuleDefinition} with methods specific to the "root"module. Note that only one module can be considered the root module. However, not all modules need to have the root module as a direct ancestors. Modules which fall into this group are treated as "siblings" of the root module, and can be retrieved using {@link RootModuleDefinition#getSiblings()} and{@link RootModuleDefinition#hasSibling(String)}. @author Phil Zoio

    
    public static RootModuleDefinition cloneAndUnfreeze(RootModuleDefinition definition) {
        if (definition == null) {
            return null;
        }
        RootModuleDefinition newDefinition = (RootModuleDefinition) SerializationUtils.clone(definition);
        unfreeze(newDefinition);
        return newDefinition;
    }

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        String moduleToReload = moduleOperationInput.getModuleName();
        Assert.notNull(moduleToReload, "moduleName is required as it specifies the name of the module to reload in "
                + this.getClass().getName());


        ModuleStateHolder moduleStateHolder = application.getModuleStateHolder();
        RootModuleDefinition oldRootDefinition = moduleStateHolder.cloneRootModuleDefinition();
        RootModuleDefinition newRootDefinition = moduleStateHolder.cloneRootModuleDefinition();


        ModificationExtractorRegistry modificationExtractor = getModificationExtractorRegistry();
        ModificationExtractor calculator = modificationExtractor
                .getModificationExtractor(ModificationExtractorType.STRICT);


        ModuleDefinition childDefinition = newRootDefinition.findChildDefinition(moduleToReload, true);


        if (childDefinition != null) {
            childDefinition.setState(ModuleState.STALE);


            TransitionSet transitions = calculator.getTransitions(application, oldRootDefinition, newRootDefinition);

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        ModuleStateHolder moduleStateHolder = application.getModuleStateHolder();
        ModificationExtractorRegistry modificationExtractorRegistry = getModificationExtractorRegistry();
        ModificationExtractor calculator = modificationExtractorRegistry
                .getModificationExtractor(ModificationExtractorType.STRICT);
        RootModuleDefinition rootModuleDefinition = moduleStateHolder.getRootModuleDefinition();
        
        if (rootModuleDefinition != null) {
            logger.info("Shutting down application context");
            TransitionSet transitions = calculator.getTransitions(application, rootModuleDefinition, null);
            TransitionResultSet transitionResultSet = getTransitionManager().processTransitions(moduleStateHolder, application, transitions);

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        Assert.notNull(moduleToReload,
                "moduleName is required as it specifies the name used to match the module to reload in "
                        + this.getClass().getName());
        
        ModuleStateHolder moduleStateHolder = application.getModuleStateHolder();
        RootModuleDefinition newDefinition = moduleStateHolder.cloneRootModuleDefinition();


        ModuleDefinition found = newDefinition.findChildDefinition(moduleToReload, false);


        if (found != null) {


            String foundModuleName = found.getName();

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        //note that the module definition source is externally supplied
        ModuleDefinitionSource newModuleDefinitionSource = moduleOperationInput.getModuleDefinitionSource();
        Assert.notNull(newModuleDefinitionSource, "moduleDefinitionSource is required as it specifies the new module definition to apply in " + this.getClass().getName());
        
        RootModuleDefinition newModuleDefinition = newModuleDefinitionSource.getModuleDefinition();
        RootModuleDefinition oldModuleDefinition = getExistingModuleDefinitionSource(application);
        
        ModificationExtractorType modificationExtractorType = getModificationExtractorType();
        
        // figure out the modules to reload
        ModificationExtractor calculator = getModificationExtractorRegistry().getModificationExtractor(modificationExtractorType);

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    /**
     * Attempts to reload the root module
     */
    public void reloadRootModule() {
        RootModuleDefinition rootModuleDefinition = getModuleStateHolder().getRootModuleDefinition();
        ModuleOperation operation = facade.getModuleOperationRegistry().getOperation(
                ModuleOperationConstants.CloseRootModuleOperation);
        execute(operation, null);
        ConstructedModuleDefinitionSource newModuleDefinitionSource = new ConstructedModuleDefinitionSource(
                rootModuleDefinition);

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    /**
     * Attempts to repair any modules which are in an error state
     */
    public void repairModules() {
        RootModuleDefinition rootModuleDefinition = getModuleStateHolder().getRootModuleDefinition();
        ModuleOperation operation = facade.getModuleOperationRegistry().getOperation(
                ModuleOperationConstants.RepairModuleOperation);
        ConstructedModuleDefinitionSource newModuleDefinitionSource = new ConstructedModuleDefinitionSource(
                rootModuleDefinition);

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    /**
     * Returns true of a module definition is present for the named module
     */
    public boolean hasModule(String moduleName) {
        RootModuleDefinition rootModuleDefinition = getModuleStateHolder().getRootModuleDefinition();
        return (rootModuleDefinition.findChildDefinition(moduleName, true) != null);
    }

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    /**
     * Returns the name of the module which matches the supplied module name, that is, the
     * first module found whose name contains that of the supplied module name
     */
    public String findModuleNameLike(String moduleName) {
        RootModuleDefinition rootModuleDefinition = getModuleStateHolder().getRootModuleDefinition();
        ModuleDefinition definition = rootModuleDefinition.findChildDefinition(moduleName, false);
        if (definition != null) {
            return definition.getName();
        }
        return null;
    }

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            resultSet.complete();
            transitionsLogger.logTransitions(resultSet);
            
        } finally {
            RootModuleDefinition rootModuleDefinition = transitions.getNewRootModuleDefinition();
            moduleStateHolder.setRootModuleDefinition(rootModuleDefinition);
        }
        
        return resultSet;
    }

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