So I think I can say I understand what Seam does now. I don't necessarily agree with it, though. I do understand that the installed attribute can't just simply override the annotation on that class, otherwise something like
| <core:jbpm/> | wouldn't work, because "installed" would still be false. On a related note, I did a little testing to see if I was reading the source code right. The results are a little odd, I think: | <?xml version="1.0" encoding="UTF-8"?> | <components xmlns="http://jboss.com/products/seam/components"; | xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; | xsi:schemaLocation="http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.0.xsd";> | | <!-- A standard @Name-annotated component: --> | <component name="foo" scope="session" startup="true"> <!-- scope etc attributes ignored... --> | <property name="title">A Foo</property> <!-- ...but property configurations are not... --> | </component> | <component name="foo" installed="false"> | <property name="description">installed by default</property> <!-- ...even when installed="false" --> | </component> | | <!-- Not @Name-annotated: --> | <component name="bar" class="eg.AbstractExampleComponent$Bar" scope="session" startup="true"> <!-- scope etc attributes not ignored --> | <property name="title">A Bar</property> <!-- properties not ignored, either, of course --> | </component> | <component name="bar"> | <property name="description">not annotated as a component</property> <!-- (ever) --> | </component> | | <!-- @Name-annotated, but also @Install(false): --> | <component class="eg.AbstractExampleComponent$Baz" scope="session" startup="true"> <!-- scope etc attributes not ignored --> | <property name="title">A Baz</property> | <property name="description">a non-installed component</property> | </component> | | </components> | | package eg; | | import org.jboss.seam.ScopeType; | import org.jboss.seam.annotations.Install; | import org.jboss.seam.annotations.Name; | import org.jboss.seam.annotations.Scope; | | | public class AbstractExampleComponent { | | private String description; | private String title; | | public String getDescription() { | return description; | } | public void setDescription(String name) { | this.description = name; | } | public String getTitle() { | return title; | } | public void setTitle(String title) { | this.title = title; | } | | @Name("foo") | @Scope(ScopeType.CONVERSATION) | public static class Foo extends AbstractExampleComponent {} | | @Scope(ScopeType.CONVERSATION) | public static class Bar extends AbstractExampleComponent {} | | @Name("baz") | @Install(false) | @Scope(ScopeType.CONVERSATION) | public static class Baz extends AbstractExampleComponent {} | | } | | package eg; | | import org.jboss.seam.Component; | import org.jboss.seam.ScopeType; | import org.jboss.seam.Seam; | import org.jboss.seam.mock.SeamTest; | import org.testng.annotations.Test; | | import eg.AbstractExampleComponent.Bar; | import eg.AbstractExampleComponent.Baz; | import eg.AbstractExampleComponent.Foo; | | public class InitializationTest extends SeamTest{ | | @Override | protected void startJbossEmbeddedIfNecessary() throws Exception { | } | | @Test | public void foo() throws Exception { | new ComponentTest() { | | @Override | protected void testComponents() throws Exception { | Foo foo = (Foo) Component.getInstance("foo"); | assert foo.getTitle().equals("A Foo"); | assert foo.getDescription().equals("installed by default"); | Component component = Seam.componentForName("foo"); | assert component.getScope() == ScopeType.CONVERSATION; //xml override not used | assert component.isStartup() == false; //same | } | | }.run(); | } | | @Test | public void bar() throws Exception { | new ComponentTest() { | | @Override | protected void testComponents() throws Exception { | Bar bar = (Bar) Component.getInstance("bar"); | assert bar.getTitle().equals("A Bar"); | assert bar.getDescription().equals("not annotated as a component"); | Component component = Seam.componentForName("bar"); | assert component.getScope() == ScopeType.SESSION; | assert component.isStartup() == true; | } | | }.run(); | } | @Test | public void baz() throws Exception { | new ComponentTest() { | | @Override | protected void testComponents() throws Exception { | Baz baz = (Baz) Component.getInstance("baz"); | assert baz.getTitle().equals("A Baz"); | assert baz.getDescription().equals("a non-installed component"); | Component component = Seam.componentForName("baz"); | assert component.getScope() == ScopeType.SESSION; | assert component.isStartup() == true; | } | | }.run(); | } | | } | (The test passes) The biggest oddity to me is that for installed components, you can't override *any* annotations, not just "@Install". Another oddity is that for install="false" elements, properties are still picked up and used. It smells buggy. Or at least not-thought-through. Is this the way things are supposed to be? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4095900#4095900 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4095900 _______________________________________________ jboss-user mailing list [email protected] https://lists.jboss.org/mailman/listinfo/jboss-user
