Date: 2004-12-20T20:23:48
Editor: SrinathPerera <[EMAIL PROTECTED]>
Wiki: Apache Geronimo Wiki
Page: GBeansArticle1
URL: http://wiki.apache.org/geronimo/GBeansArticle1
no comment
Change Log:
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@@ -53,7 +53,7 @@
1. Registry Service together with lookups separate the service information
from the caller by hiding them behind a name.
1. IOC or the dependency injection allows the automatic injection of
references as they become available.
- The Idea of IOC is to define all the relationships among the components
in terms of the framework level configurations and each component is injected
to the other components that refer the service when the first component is
available.
+The Idea of IOC is to define all the relationships among the components in
terms of the framework level configurations and each component is injected to
the other components that refer the service when the first component is
available.
For an example let us consider the how a GBean G1 obtains a reference to a
Configuration Store. The G1 is configured specifying the patterns of the
reference it is expected.
{{{
@@ -112,8 +112,8 @@
There are two types of relationships
-1. Single references
-1. Reference Collections
+ 1. Single references
+ 1. Reference Collections
=== Single references ===
The references are injected to a GBean in one of the two ways; the
getter/setter injection and the constructor injection based on how the
dependencies injected in to the java Class that use to implements the GBean.
With the getter and setter injection framework injects the attributes/
references using the getter and setter methods where as in the constructor
injection s injects the parameters as constructor parameters. The second
approach is more preferable as with that the GBeans support so called good
citizen pattern making sure that the GBean is in usable state once it is
started. Geronimo supports both methods but moving towards the complete
constructor injection.
