Examples of ModificationExtractor

org.impalaframework.module.ModificationExtractor
The job of a {@link ModificationExtractor} is to determine what changes are requiredto convert from the currently loaded module hierarchy (which at pre-load time will be empty), to a desired module hierarchy as determined by a second hierarchy of {@link ModuleDefinition}s.
For example, suppose module A is the root module and it's child, module B, is loaded. Suppose also that change the desired module hierarchy so that module A will still be loaded, but it will have just one child, module C. The actions that need to take place are: B must be unloaded C must be loaded
The advantage of the use of the {@link ModificationExtractor} is that it is possibleto edit a module configuration hierarchy offline, then apply it in one go, without having to work out individually what are the module changes required to effect this change. @author Phil Zoio
org.impalaframework.module.modification.ModificationExtractor
org.impalaframework.module.spi.ModificationExtractor
The job of a {@link ModificationExtractor} is to determine what changes are requiredto convert from the currently loaded module hierarchy (which at pre-load time will be empty), to a desired module hierarchy as determined by a second hierarchy of {@link ModuleDefinition}s.
For example, suppose module A is the root module and it's child, module B, is loaded. Suppose also that change the desired module hierarchy so that module A will still be loaded, but it will have just one child, module C. The actions that need to take place are: B must be unloaded C must be loaded
The advantage of the use of the {@link ModificationExtractor} is that it is possibleto edit a module configuration hierarchy offline, then apply it in one go, without having to work out individually what are the module changes required to effect this change. @author Phil Zoio

Examples of org.impalaframework.module.modification.ModificationExtractor

    Assert.notNull(moduleOperationInput, "moduleOperationInput cannot be null");
    String moduleToRemove = moduleOperationInput.getModuleName();
    Assert.notNull(moduleToRemove, "moduleName is required as it specifies the name of the module to remove in " + this.getClass().getName());
    
    ModuleStateHolder moduleStateHolder = getModuleStateHolder();
    ModificationExtractor calculator = getModificationExtractorRegistry().getModificationExtractor(ModificationExtractorType.STRICT);
    boolean result = removeModule(moduleStateHolder, calculator, moduleToRemove);
    return result ? ModuleOperationResult.TRUE : ModuleOperationResult.FALSE;
  }

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Examples of org.impalaframework.module.spi.ModificationExtractor

public class ModificationExtractorRegistry {


    private Map<ModificationExtractorType, ModificationExtractor> modificationExtractors = new HashMap<ModificationExtractorType, ModificationExtractor>();


    public ModificationExtractor getModificationExtractor(ModificationExtractorType type) {
        ModificationExtractor calculator = modificationExtractors.get(type);


        if (calculator == null) {
            throw new NoServiceException("No " + ModificationExtractor.class.getSimpleName()
                    + " available for modification type " + type);
        }

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Examples of org.impalaframework.module.spi.ModificationExtractor

    Assert.notNull(moduleOperationInput, "moduleOperationInput cannot be null");
    ModuleDefinition moduleToAdd = moduleOperationInput.getModuleDefinition();
    Assert.notNull(moduleToAdd, "moduleName is required as it specifies the name of the module to add in " + this.getClass().getName());
    
    ModuleStateHolder moduleStateHolder = getModuleStateHolder();
    ModificationExtractor calculator = getModificationExtractorRegistry().getModificationExtractor(ModificationExtractorType.STICKY);
    
    addModule(moduleStateHolder, calculator, moduleToAdd);
    return new ModuleOperationResult(true);
  }

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Examples of org.impalaframework.module.spi.ModificationExtractor

    Assert.notNull(moduleOperationInput, "moduleOperationInput cannot be null");
    String moduleToRemove = moduleOperationInput.getModuleName();
    Assert.notNull(moduleToRemove, "moduleName is required as it specifies the name of the module to remove in " + this.getClass().getName());
    
    ModuleStateHolder moduleStateHolder = getModuleStateHolder();
    ModificationExtractor calculator = getModificationExtractorRegistry().getModificationExtractor(ModificationExtractorType.STRICT);
    boolean result = removeModule(moduleStateHolder, calculator, moduleToRemove);
    return result ? ModuleOperationResult.TRUE : ModuleOperationResult.FALSE;
  }

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Examples of org.impalaframework.module.spi.ModificationExtractor

public class ModificationExtractorRegistry {


    private Map<ModificationExtractorType, ModificationExtractor> modificationExtractors = new HashMap<ModificationExtractorType, ModificationExtractor>();


    public ModificationExtractor getModificationExtractor(ModificationExtractorType type) {
        ModificationExtractor calculator = modificationExtractors.get(type);


        if (calculator == null) {
            throw new NoServiceException("No " + ModificationExtractor.class.getSimpleName()
                    + " available for modification type " + type);
        }

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Examples of org.impalaframework.module.spi.ModificationExtractor

        ModuleStateHolder moduleStateHolder = 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(oldRootDefinition, newRootDefinition);
            moduleStateHolder.processTransitions(transitions);


            boolean result = !transitions.getModuleTransitions().isEmpty();
            return result ? ModuleOperationResult.TRUE : ModuleOperationResult.FALSE;
        }

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Examples of org.impalaframework.module.spi.ModificationExtractor


    public ModuleOperationResult doExecute(ModuleOperationInput moduleOperationInput) {
        
        ModuleStateHolder moduleStateHolder = 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(rootModuleDefinition, null);
            moduleStateHolder.processTransitions(transitions);
            return ModuleOperationResult.TRUE;
        }
        else {
            return ModuleOperationResult.FALSE;

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Examples of org.impalaframework.module.spi.ModificationExtractor

        RootModuleDefinition oldModuleDefinition = getExistingModuleDefinitionSource();
        
        ModificationExtractorType modificationExtractorType = getModificationExtractorType();
        
        // figure out the modules to reload
        ModificationExtractor calculator = getModificationExtractorRegistry().getModificationExtractor(modificationExtractorType);
        
        TransitionSet transitions = calculator.getTransitions(oldModuleDefinition, newModuleDefinition);
        moduleStateHolder.processTransitions(transitions);
        return ModuleOperationResult.TRUE;
    }

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Examples of org.impalaframework.module.spi.ModificationExtractor

        Assert.notNull(moduleOperationInput, "moduleOperationInput cannot be null");
        ModuleDefinition moduleToAdd = moduleOperationInput.getModuleDefinition();
        Assert.notNull(moduleToAdd, "moduleName is required as it specifies the name of the module to add in " + this.getClass().getName());
        
        ModuleStateHolder moduleStateHolder = getModuleStateHolder();
        ModificationExtractor calculator = getModificationExtractorRegistry().getModificationExtractor(ModificationExtractorType.STICKY);
        
        addModule(moduleStateHolder, calculator, moduleToAdd);
        return new ModuleOperationResult(true);
    }

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Examples of org.impalaframework.module.spi.ModificationExtractor

        Assert.notNull(moduleOperationInput, "moduleOperationInput cannot be null");
        String moduleToRemove = moduleOperationInput.getModuleName();
        Assert.notNull(moduleToRemove, "moduleName is required as it specifies the name of the module to remove in " + this.getClass().getName());
        
        ModuleStateHolder moduleStateHolder = getModuleStateHolder();
        ModificationExtractor calculator = getModificationExtractorRegistry().getModificationExtractor(ModificationExtractorType.STRICT);
        boolean result = removeModule(moduleStateHolder, calculator, moduleToRemove);
        return result ? ModuleOperationResult.TRUE : ModuleOperationResult.FALSE;
    }

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