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move code comment to callout

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Dan Allen 2023-01-12 18:25:50 -07:00 committed by Rob Winch
parent 879770a0f6
commit c47fbf7cfd
1 changed files with 9 additions and 12 deletions
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21
docs/modules/ROOT/pages/servlet/architecture.adoc
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@ -71,29 +71,26 @@ The following listing shows pseudo code of `DelegatingFilterProxy`:
.`DelegatingFilterProxy` Pseudo Code .`DelegatingFilterProxy` Pseudo Code
==== ====
.Java .Java
[source,java,role="primary",subs="+quotes,+macros"] [source,java,role="primary"]
---- ----
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) { public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) {
// Lazily get Filter that was registered as a Spring Bean Filter delegate = getFilterBean(someBeanName); // <1>
// For the example in <<servlet-delegatingfilterproxy-figure>> `delegate` is an instance of __Bean Filter~0~__ delegate.doFilter(request, response); // <2>
Filter delegate = getFilterBean(someBeanName);
// delegate work to the Spring Bean
delegate.doFilter(request, response);
} }
---- ----
.Kotlin .Kotlin
[source,kotlin,role="secondary",subs="+quotes,+macros"] [source,kotlin,role="secondary"]
---- ----
fun doFilter(request: ServletRequest, response: ServletResponse, chain: FilterChain) { fun doFilter(request: ServletRequest, response: ServletResponse, chain: FilterChain) {
// Lazily get Filter that was registered as a Spring Bean val delegate: Filter = getFilterBean(someBeanName) // <1>
// For the example in <<servlet-delegatingfilterproxy-figure>> `delegate` is an instance of __Bean Filter~0~__ delegate.doFilter(request, response) // <2>
val delegate: Filter = getFilterBean(someBeanName)
// delegate work to the Spring Bean
delegate.doFilter(request, response)
} }
---- ----
==== ====
<1> Lazily get Filter that was registered as a Spring Bean.
For the example in <<servlet-delegatingfilterproxy-figure>> `delegate` is an instance of __Bean Filter~0~__.
<2> Delegate work to the Spring Bean.
Another benefit of `DelegatingFilterProxy` is that it allows delaying looking up `Filter` bean instances. Another benefit of `DelegatingFilterProxy` is that it allows delaying looking up `Filter` bean instances.
This is important because the container needs to register the `Filter` instances before the container can start up. This is important because the container needs to register the `Filter` instances before the container can start up.