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com.vaadin.flow.server.startup.
Class LookupServletContainerInitializer
- java.lang.Object
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- com.vaadin.flow.server.startup.LookupServletContainerInitializer
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All Implemented Interfaces:
ClassLoaderAwareServletContainerInitializer, javax.servlet.ServletContainerInitializer
public class LookupServletContainerInitializer extends Object implements ClassLoaderAwareServletContainerInitializerStandard servlet initializer for collecting all SPI implementations.
For internal use only. May be renamed or removed in a future release.
Since:
Author:
Vaadin Ltd
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Constructor Summary
Constructors Constructor and Description LookupServletContainerInitializer()
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Method Summary
All Methods Modifier and Type Method and Description protected Collection<Class<?>>getServiceTypes()Gets the service types that are used to set services into the
Lookupbased on found subtypes by theServletContainerInitializer.voidprocess(Set<Class<?>> classSet, javax.servlet.ServletContext servletContext)Implement this method instead of
ClassLoaderAwareServletContainerInitializer.onStartup(Set, ServletContext)to handle classes accessible by different classloaders.booleanrequiresLookup()Whether this initializer requires lookup or not.
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface com.vaadin.flow.server.startup.ClassLoaderAwareServletContainerInitializer
onStartup
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Method Detail
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process
public void process(Set<Class<?>> classSet, javax.servlet.ServletContext servletContext) throws javax.servlet.ServletExceptionDescription copied from interface:
ClassLoaderAwareServletContainerInitializerImplement this method instead of
ClassLoaderAwareServletContainerInitializer.onStartup(Set, ServletContext)to handle classes accessible by different classloaders.Specified by:
processin interfaceClassLoaderAwareServletContainerInitializerParameters:
classSet- the Set of application classes that extend, implement, or have been annotated with the class types specified by theHandlesTypesannotation, or null if there are no matches, or this ServletContainerInitializer has not been annotated with HandlesTypesservletContext- the ServletContext of the web application that is being started and in which the classes contained in classSet were foundThrows:
javax.servlet.ServletException- if an error has occurredSee Also:
ClassLoaderAwareServletContainerInitializer.onStartup(Set, ServletContext)
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requiresLookup
public boolean requiresLookup()Description copied from interface:
ClassLoaderAwareServletContainerInitializerWhether this initializer requires lookup or not.
Specified by:
requiresLookupin interfaceClassLoaderAwareServletContainerInitializerReturns:
whether this initializer requires lookup
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getServiceTypes
protected Collection<Class<?>> getServiceTypes()Gets the service types that are used to set services into the
Lookupbased on found subtypes by theServletContainerInitializer.LookupServletContainerInitializerusesServletContainerInitializerclasses discovering mechanism based onHandlesTypesannotation. The method may be overridden to return the service types which should be put into theLookupinstance if another mechanism of class searching is used (e.g. Spring boot case).The set of classes (passed into the
process(Set, ServletContext)method) will be filtered via checking whether they are assignable to the service types and the resulting classes will be instantiated via reflection.Returns:
a collection of service types which should be available via Lookup
See Also:
LookupInitializer.initialize(VaadinContext, Map, VaadinApplicationInitializationBootstrap)
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