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Posted to users@tapestry.apache.org by "F. Da Costa Gomez" <dc...@fixed.com> on 2003/05/12 00:07:50 UTC
Verification of understanding binding & inherited-binding
Hi all,
I would just like to make sure that my understanding of inherited-binding
(opposed to binding) is correct.
Ordinary binding takes place in case one does something between the
component.jwc(/container) and its corresponding java class.
Example:
<component id="tableView" type="contrib:TableView">
<binding name="tableModel" expression="tableModel"/>
<binding name="tableSessionStateManager"
expression="tableSessionStateManager"/>
</component>
...
The java class is expected to have get/set methods for tableModel as well
as tableSessionStateManager.
OTOH inherited-binding is used for "linking" parameter(s) of the
component.jwc(/container) to (un)required parameters of *contained (/used)*
components.
Example:
<component-specification class="org.dcg.tests.ArrayViewer" allow-body="no"
allow-informal-parameters="yes">
<parameter
name="componentSource"
java-type="java.lang.Object"
direction="in"
required="yes">
</parameter>
<component id="elements" type="Foreach">
<inherited-binding name="source" parameter-name="componentSource"/>
</component>
...
By using the ArrayViewer in a .page component spec the componentSource gets
"filled" and finds it way to the Foreach via the inherited binding.
Now that I'm on the subject of binding there is one other thing that made
me raise an eyebrow.