Class PageLoaderImpl
- java.lang.Object
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- org.apache.tapestry5.internal.pageload.PageLoaderImpl
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- All Implemented Interfaces:
ComponentAssemblerSource
,PageLoader
public class PageLoaderImpl extends java.lang.Object implements PageLoader, ComponentAssemblerSource
There's still a lot of room to beef upComponentAssembler
andEmbeddedComponentAssembler
to perform more static analysis, but that may no longer be necessary, given the switch to shared (non-pooled) pages in 5.2. Loading a page involves a recursive process of creatingComponentAssembler
s: for the root component, then down the tree for each embedded component. A ComponentAssembler is largely a collection ofPageAssemblyAction
s. Once created, a ComponentAssembler can quickly assemble any number of component instances. All of the expensive logic, such as fitting template tokens together and matching parameters to bindings, is done as part of the one-time construction of the ComponentAssembler. The end result removes a huge amount of computational redundancy that was present in Tapestry 5.0, but to understand this, you need to split your mind into two phases: construction (of the ComponentAssemblers) and assembly. And truly, This is the Tapestry Heart, This is the Tapestry Soul...
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Constructor Summary
Constructors Constructor Description PageLoaderImpl(ComponentInstantiatorSource instantiatorSource, ComponentTemplateSource templateSource, PageElementFactory elementFactory, ComponentPageElementResourcesSource resourcesSource, ComponentClassResolver componentClassResolver, PersistentFieldManager persistentFieldManager, StringInterner interner, OperationTracker tracker, PerthreadManager perThreadManager, org.slf4j.Logger logger, MetaDataLocator metaDataLocator)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clearCache()
org.apache.tapestry5.internal.pageload.ComponentAssembler
getAssembler(java.lang.String className, ComponentResourceSelector selector)
Gets (and possibly creates) a component assembler for the indicated class name and selector.Page
loadPage(java.lang.String logicalPageName, ComponentResourceSelector selector)
Loads the page for the indicated selector.void
setupInvalidation(InvalidationEventHub classesHub, InvalidationEventHub templatesHub, InvalidationEventHub messagesHub)
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Constructor Detail
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PageLoaderImpl
public PageLoaderImpl(ComponentInstantiatorSource instantiatorSource, ComponentTemplateSource templateSource, PageElementFactory elementFactory, ComponentPageElementResourcesSource resourcesSource, ComponentClassResolver componentClassResolver, PersistentFieldManager persistentFieldManager, StringInterner interner, OperationTracker tracker, PerthreadManager perThreadManager, org.slf4j.Logger logger, MetaDataLocator metaDataLocator)
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Method Detail
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setupInvalidation
@PostInjection public void setupInvalidation(@ComponentClasses InvalidationEventHub classesHub, @ComponentTemplates InvalidationEventHub templatesHub, @ComponentMessages InvalidationEventHub messagesHub)
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clearCache
public void clearCache()
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loadPage
public Page loadPage(java.lang.String logicalPageName, ComponentResourceSelector selector)
Description copied from interface:PageLoader
Loads the page for the indicated selector.- Specified by:
loadPage
in interfacePageLoader
- Parameters:
logicalPageName
- the canonicalized logical name of the page, which will be made available viaPage.getName()
andComponentResourcesCommon.getPageName()
(for any component within the page).selector
- Encapsulates the locale and other information used to select the component's template and message catalog resources.
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getAssembler
public org.apache.tapestry5.internal.pageload.ComponentAssembler getAssembler(java.lang.String className, ComponentResourceSelector selector)
Description copied from interface:ComponentAssemblerSource
Gets (and possibly creates) a component assembler for the indicated class name and selector.- Specified by:
getAssembler
in interfaceComponentAssemblerSource
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