Examples of org.impalaframework.spring.module.DelegatingContextLoader

Package org.impalaframework.spring.module

Examples of org.impalaframework.spring.module.DelegatingContextLoader

org.impalaframework.spring.module.DelegatingContextLoader
{@link DelegatingContextLoader} is used as an alternative strategy for module loading to {@link ModuleLoader}.
Implementations of {@link DelegatingContextLoader} can be used to back aSpring module for types of modules for which the restrictions which apply for {@link ModuleLoader} implementations is not appropriate. For example, thereis a web_placeholder module type, which is backed by an empty instance of {@link org.springframework.web.context.support.GenericWebApplicationContext}, to cover servlet modules which are present in web.xml but not actually backed by any real module functionality.
{@link DelegatingContextLoader} could also be used for integrating withImpala specific frameworks which use a Spring application context in a very specialized way, for example, through their own subclass implementations of {@link org.springframework.web.context.WebApplicationContext}. An example might be a framework such as Grails. @see ModuleLoader @author Phil Zoio

        ConfigurableApplicationContext context = null;
        
        final ModuleLoader loader = moduleLoaderRegistry.getModuleLoader(ModuleRuntimeUtils.getModuleLoaderKey(definition), false);
        final SpringModuleLoader moduleLoader = ObjectUtils.cast(loader, SpringModuleLoader.class);
        
        final DelegatingContextLoader delegatingLoader = delegatingContextLoaderRegistry.getDelegatingLoader(definition.getType());


        try {


            if (moduleLoader != null) {
                if (logger.isDebugEnabled()) logger.debug("Loading module " + definition + " using ModuleLoader " + moduleLoader);
                context = loadApplicationContext(application, classLoader, moduleLoader, parent, definition);
                
                final String applicationId = application.getId();
                moduleLoader.afterRefresh(applicationId, context, definition);
            }
            else if (delegatingLoader != null) {
                if (logger.isDebugEnabled()) logger.debug("Loading module " + definition + " using DelegatingContextLoader " + moduleLoader);
                context = delegatingLoader.loadApplicationContext(parent, definition);
            }
            else {
                throw new ConfigurationException("No " + ModuleLoader.class.getName() + " or "
                        + DelegatingContextLoader.class.getName() + " specified for module definition type " + definition.getType());
            }

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        ConfigurableApplicationContext context = null;
        
        final ModuleLoader loader = moduleLoaderRegistry.getModuleLoader(ModuleRuntimeUtils.getModuleLoaderKey(definition), false);
        final SpringModuleLoader moduleLoader = ObjectUtils.cast(loader, SpringModuleLoader.class);
        
        final DelegatingContextLoader delegatingLoader = delegatingContextLoaderRegistry.getDelegatingLoader(definition.getType());


        try {


            if (moduleLoader != null) {
                if (logger.isDebugEnabled()) logger.debug("Loading module " + definition + " using ModuleLoader " + moduleLoader);
                context = loadApplicationContext(application, classLoader, moduleLoader, parent, definition);
                
                final String applicationId = application.getId();
                moduleLoader.afterRefresh(applicationId, context, definition);
            }
            else if (delegatingLoader != null) {
                if (logger.isDebugEnabled()) logger.debug("Loading module " + definition + " using DelegatingContextLoader " + moduleLoader);
                context = delegatingLoader.loadApplicationContext(parent, definition);
            }
            else {
                throw new ConfigurationException("No " + ModuleLoader.class.getName() + " or "
                        + DelegatingContextLoader.class.getName() + " specified for module definition type " + definition.getType());
            }

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        ConfigurableApplicationContext context = null;
        
        final ModuleLoader loader = moduleLoaderRegistry.getModuleLoader(ModuleRuntimeUtils.getModuleLoaderKey(definition), false);
        final SpringModuleLoader moduleLoader = ObjectUtils.cast(loader, SpringModuleLoader.class);
        
        final DelegatingContextLoader delegatingLoader = delegatingContextLoaderRegistry.getDelegatingLoader(definition.getType());


        try {


            if (moduleLoader != null) {
                if (logger.isDebugEnabled()) logger.debug("Loading module " + definition + " using ModuleLoader " + moduleLoader);
                context = loadApplicationContext(moduleLoader, parent, definition);
                moduleLoader.afterRefresh(context, definition);
            }
            else if (delegatingLoader != null) {
                if (logger.isDebugEnabled()) logger.debug("Loading module " + definition + " using DelegatingContextLoader " + moduleLoader);
                context = delegatingLoader.loadApplicationContext(parent, definition);
            }
            else {
                throw new ConfigurationException("No " + ModuleLoader.class.getName() + " or "
                        + DelegatingContextLoader.class.getName() + " specified for module definition type " + definition.getType());
            }

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        moduleLoaderRegistry.addItem(ModuleTypes.APPLICATION, applicationModuleLoader);


        ModuleDefinition p = new SimpleRootModuleDefinition(rootModuleName, new String[] { "parent-context.xml" });
        assertTrue(moduleLoaderRegistry.getModuleLoader(p.getType()) instanceof ApplicationModuleLoader);


        DelegatingContextLoader delegatingLoader = new DelegatingContextLoader() {
            public ConfigurableApplicationContext loadApplicationContext(ApplicationContext parent,
                    ModuleDefinition definition) {
                return null;
            }
        };

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        Map<String, ModuleLoader> moduleLoaders = setModuleLoaders();
        
        assertEquals(2, moduleLoaders.size());


        Map<String,DelegatingContextLoader> delegatingLoaders = new HashMap<String, DelegatingContextLoader>();
        DelegatingContextLoader delegatingLoader = new DelegatingContextLoader() {
            public ConfigurableApplicationContext loadApplicationContext(ApplicationContext parent,
                    ModuleDefinition definition) {
                return null;
            }
        };

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    ConfigurableApplicationContext context = null;
    
    final ModuleLoader loader = moduleLoaderRegistry.getModuleLoader(ModuleRuntimeUtils.getModuleLoaderKey(definition), false);
    final SpringModuleLoader moduleLoader = ObjectUtils.cast(loader, SpringModuleLoader.class);
    
    final DelegatingContextLoader delegatingLoader = delegatingContextLoaderRegistry.getDelegatingLoader(definition.getType());


    try {


      if (moduleLoader != null) {
        if (logger.isDebugEnabled()) logger.debug("Loading module " + definition + " using ModuleLoader " + moduleLoader);
        context = loadApplicationContext(moduleLoader, parent, definition);
        moduleLoader.afterRefresh(context, definition);
      }
      else if (delegatingLoader != null) {
        if (logger.isDebugEnabled()) logger.debug("Loading module " + definition + " using DelegatingContextLoader " + moduleLoader);
        context = delegatingLoader.loadApplicationContext(parent, definition);
      }
      else {
        throw new ConfigurationException("No " + ModuleLoader.class.getName() + " or "
            + DelegatingContextLoader.class.getName() + " specified for module definition type " + definition.getType());
      }

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Related Classes of org.impalaframework.spring.module.DelegatingContextLoader

org.impalaframework.spring.module.loader.BaseApplicationContextLoader

org.impalaframework.spring.module.loader.ModuleLoaderRegistryTest

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