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Posted to user@shale.apache.org by Craig McClanahan <cr...@apache.org> on 2006/07/13 01:45:25 UTC
Re: Is this possible to pass dynamically information from a beans as a shale method parameter?
On 7/12/06, Iakouchev Alexander-EAL027C <EA...@motorola.com> wrote:
>
> Is this possible to pass dynamically information from a beans as a
> shale method parameter?
> Alex.
>
>
In JSF 1.1, you cannot do this (it's not a Shale issue, it's the basic
functionality of JSF method binding expression). In JSF 1.2, you can ...
but only for calls to static methods.
A better general strategy is to invoke a method that takes no parameters,
but ensure that the called method can extract whatever it needs. For
example, consider the standard JSF call to your action method (which takes
no parameters). There are at least two ways for the called method to access
request parameters on the incoming request:
* Via JSF programmatic APIs:
// Retrieve the value of the "foo" parameter
FacesContext context = FacesContext.getCurrentInstance();
String foo = (String)
context.getExternalContext().getRequestParameterMap().get("foo"0;
* By managed beans expression evaluation. This example requires
a bit more setup to configure, but is much easier to use because
the values are injected for you. Consider again that you want to
extract the value of the "foo" parameter and use it in your myAction()
action method. Define your managed bean entry like this:
<managed-bean>
<managed-bean-name>mybean</managed-bean-name>
<managed-bean-class>com.mypackage.MyBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
<managed-property>
<property-name>foo</property-name>
<value>#{param.foo}</value>
</managed-property>
</managed-bean>
and set up your bean class like this:
package com.mypackage;
public class MyBean {
...
private String foo = null;
public String getFoo() { return this.foo; }
public void setFoo(String foo) { this.foo = foo; }
...
public String myAction() {
// Get the value of the "foo" request parameter
String foo = getFoo();
...
}
...
}
The formula #{param.foo} is evaluated when the managed bean is created, and
extracts the value of the request parameter named "foo" and calls setFoo()
on your bean. By the time the action method is called, the value will be
there already.
Craig
Re: Is this possible to pass dynamically information from a beans as a shale method parameter?
Posted by Craig McClanahan <cr...@apache.org>.
On 7/13/06, Iakouchev Alexander-EAL027C <EA...@motorola.com> wrote:
>
> Some notes. I forget to tell.
>
> It is perfectly working with constans ...
> <s:validatorVar name="operationID" value="Testing"/>
>
> ,not with beans ...
> <s:validatorVar name="operationID"
> value="#{mtJobOperation.operationID}"/>
>
> Second line pass to a custom validator method just a null.
> Alex.
OK, that sounds like a bug in the <s:validatorVar> tag ... looks like it is
not (correctly) evaluating binding expressions. Could you please file a bug
report in our issue tracking system? (We're still sharing a JIRA instance
with Struts, so it at: <http://issues.apache.org/struts> under product
"Shale").
Including the examples in this mail thread will really help narrow down what
is going on.
Craig
-----Original Message-----
> From: Iakouchev Alexander-EAL027C
> Sent: Thursday, July 13, 2006 10:29 AM
> To: user@shale.apache.org
> Subject: RE: Is this possible to pass dynamically information from a
> beans as a shale method parameter?
>
> Hello Craig!
> Thank you for feedback.
>
> I want to be more specific. I need validate all rows in "dataTable"
> component. JSP page show list of "Foo" objects. For example, the
> inputText component with id="---" has shale custom validate. I need
> analyze dependency component id="---" row i from component id="---" row
> 0...n.
>
> In other words I need pass some current row id to get by id real object.
> <s:commonsValidator
> type="validateQuoteHoursValue"
> arg="quoteHours"
> server="true"
> client="false"
> >
> <s:validatorVar name="operationID"
> value="#{mtJobOperation.operationID}"/>
> </s:commonsValidator>
>
> This valuator does not works. It receive operationID equal null. But
> outputText shown some not null information.
> <t:outputText value="#{mtJobOperation.operationID}"/>
>
> The Shale validator example show some solution with dynamic shale method
> parameter, but it is with standard validator example not a custom
> validator.
> Alex.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: craigmcc@gmail.com [mailto:craigmcc@gmail.com] On Behalf Of Craig
> McClanahan
> Sent: Wednesday, July 12, 2006 7:45 PM
> To: user@shale.apache.org
> Subject: Re: Is this possible to pass dynamically information from a
> beans as a shale method parameter?
>
> On 7/12/06, Iakouchev Alexander-EAL027C <EA...@motorola.com> wrote:
> >
> > Is this possible to pass dynamically information from a beans as a
> > shale method parameter?
> > Alex.
> >
> >
>
> In JSF 1.1, you cannot do this (it's not a Shale issue, it's the basic
> functionality of JSF method binding expression). In JSF 1.2, you can
> ...
> but only for calls to static methods.
>
> A better general strategy is to invoke a method that takes no
> parameters, but ensure that the called method can extract whatever it
> needs. For example, consider the standard JSF call to your action
> method (which takes no parameters). There are at least two ways for the
> called method to access request parameters on the incoming request:
>
> * Via JSF programmatic APIs:
>
> // Retrieve the value of the "foo" parameter
> FacesContext context = FacesContext.getCurrentInstance();
> String foo = (String)
>
> context.getExternalContext().getRequestParameterMap().get("foo"0;
>
> * By managed beans expression evaluation. This example requires
> a bit more setup to configure, but is much easier to use because
> the values are injected for you. Consider again that you want to
> extract the value of the "foo" parameter and use it in your myAction()
> action method. Define your managed bean entry like this:
>
> <managed-bean>
> <managed-bean-name>mybean</managed-bean-name>
> <managed-bean-class>com.mypackage.MyBean</managed-bean-class>
> <managed-bean-scope>request</managed-bean-scope>
> <managed-property>
> <property-name>foo</property-name>
> <value>#{param.foo}</value>
> </managed-property>
> </managed-bean>
>
> and set up your bean class like this:
>
> package com.mypackage;
> public class MyBean {
> ...
> private String foo = null;
> public String getFoo() { return this.foo; }
> public void setFoo(String foo) { this.foo = foo; }
> ...
> public String myAction() {
> // Get the value of the "foo" request parameter
> String foo = getFoo();
> ...
> }
> ...
> }
>
> The formula #{param.foo} is evaluated when the managed bean is created,
> and extracts the value of the request parameter named "foo" and calls
> setFoo() on your bean. By the time the action method is called, the
> value will be there already.
>
> Craig
>
RE: Is this possible to pass dynamically information from a beans as a shale method parameter?
Posted by Iakouchev Alexander-EAL027C <EA...@motorola.com>.
Some notes. I forget to tell.
It is perfectly working with constans ...
<s:validatorVar name="operationID" value="Testing"/>
,not with beans ...
<s:validatorVar name="operationID"
value="#{mtJobOperation.operationID}"/>
Second line pass to a custom validator method just a null.
Alex.
-----Original Message-----
From: Iakouchev Alexander-EAL027C
Sent: Thursday, July 13, 2006 10:29 AM
To: user@shale.apache.org
Subject: RE: Is this possible to pass dynamically information from a
beans as a shale method parameter?
Hello Craig!
Thank you for feedback.
I want to be more specific. I need validate all rows in "dataTable"
component. JSP page show list of "Foo" objects. For example, the
inputText component with id="---" has shale custom validate. I need
analyze dependency component id="---" row i from component id="---" row
0...n.
In other words I need pass some current row id to get by id real object.
<s:commonsValidator
type="validateQuoteHoursValue"
arg="quoteHours"
server="true"
client="false"
>
<s:validatorVar name="operationID"
value="#{mtJobOperation.operationID}"/>
</s:commonsValidator>
This valuator does not works. It receive operationID equal null. But
outputText shown some not null information.
<t:outputText value="#{mtJobOperation.operationID}"/>
The Shale validator example show some solution with dynamic shale method
parameter, but it is with standard validator example not a custom
validator.
Alex.
-----Original Message-----
From: craigmcc@gmail.com [mailto:craigmcc@gmail.com] On Behalf Of Craig
McClanahan
Sent: Wednesday, July 12, 2006 7:45 PM
To: user@shale.apache.org
Subject: Re: Is this possible to pass dynamically information from a
beans as a shale method parameter?
On 7/12/06, Iakouchev Alexander-EAL027C <EA...@motorola.com> wrote:
>
> Is this possible to pass dynamically information from a beans as a
> shale method parameter?
> Alex.
>
>
In JSF 1.1, you cannot do this (it's not a Shale issue, it's the basic
functionality of JSF method binding expression). In JSF 1.2, you can
...
but only for calls to static methods.
A better general strategy is to invoke a method that takes no
parameters, but ensure that the called method can extract whatever it
needs. For example, consider the standard JSF call to your action
method (which takes no parameters). There are at least two ways for the
called method to access request parameters on the incoming request:
* Via JSF programmatic APIs:
// Retrieve the value of the "foo" parameter
FacesContext context = FacesContext.getCurrentInstance();
String foo = (String)
context.getExternalContext().getRequestParameterMap().get("foo"0;
* By managed beans expression evaluation. This example requires
a bit more setup to configure, but is much easier to use because
the values are injected for you. Consider again that you want to
extract the value of the "foo" parameter and use it in your myAction()
action method. Define your managed bean entry like this:
<managed-bean>
<managed-bean-name>mybean</managed-bean-name>
<managed-bean-class>com.mypackage.MyBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
<managed-property>
<property-name>foo</property-name>
<value>#{param.foo}</value>
</managed-property>
</managed-bean>
and set up your bean class like this:
package com.mypackage;
public class MyBean {
...
private String foo = null;
public String getFoo() { return this.foo; }
public void setFoo(String foo) { this.foo = foo; }
...
public String myAction() {
// Get the value of the "foo" request parameter
String foo = getFoo();
...
}
...
}
The formula #{param.foo} is evaluated when the managed bean is created,
and extracts the value of the request parameter named "foo" and calls
setFoo() on your bean. By the time the action method is called, the
value will be there already.
Craig
RE: Is this possible to pass dynamically information from a beans as a shale method parameter?
Posted by Iakouchev Alexander-EAL027C <EA...@motorola.com>.
Hello Craig!
Thank you for feedback.
I want to be more specific. I need validate all rows in "dataTable"
component. JSP page show list of "Foo" objects. For example, the
inputText component with id="---" has shale custom validate. I need
analyze dependency component id="---" row i from component id="---" row
0...n.
In other words I need pass some current row id to get by id real object.
<s:commonsValidator
type="validateQuoteHoursValue"
arg="quoteHours"
server="true"
client="false"
>
<s:validatorVar name="operationID"
value="#{mtJobOperation.operationID}"/>
</s:commonsValidator>
This valuator does not works. It receive operationID equal null. But
outputText shown some not null information.
<t:outputText value="#{mtJobOperation.operationID}"/>
The Shale validator example show some solution with dynamic shale method
parameter, but it is with standard validator example not a custom
validator.
Alex.
-----Original Message-----
From: craigmcc@gmail.com [mailto:craigmcc@gmail.com] On Behalf Of Craig
McClanahan
Sent: Wednesday, July 12, 2006 7:45 PM
To: user@shale.apache.org
Subject: Re: Is this possible to pass dynamically information from a
beans as a shale method parameter?
On 7/12/06, Iakouchev Alexander-EAL027C <EA...@motorola.com> wrote:
>
> Is this possible to pass dynamically information from a beans as a
> shale method parameter?
> Alex.
>
>
In JSF 1.1, you cannot do this (it's not a Shale issue, it's the basic
functionality of JSF method binding expression). In JSF 1.2, you can
...
but only for calls to static methods.
A better general strategy is to invoke a method that takes no
parameters, but ensure that the called method can extract whatever it
needs. For example, consider the standard JSF call to your action
method (which takes no parameters). There are at least two ways for the
called method to access request parameters on the incoming request:
* Via JSF programmatic APIs:
// Retrieve the value of the "foo" parameter
FacesContext context = FacesContext.getCurrentInstance();
String foo = (String)
context.getExternalContext().getRequestParameterMap().get("foo"0;
* By managed beans expression evaluation. This example requires
a bit more setup to configure, but is much easier to use because
the values are injected for you. Consider again that you want to
extract the value of the "foo" parameter and use it in your myAction()
action method. Define your managed bean entry like this:
<managed-bean>
<managed-bean-name>mybean</managed-bean-name>
<managed-bean-class>com.mypackage.MyBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
<managed-property>
<property-name>foo</property-name>
<value>#{param.foo}</value>
</managed-property>
</managed-bean>
and set up your bean class like this:
package com.mypackage;
public class MyBean {
...
private String foo = null;
public String getFoo() { return this.foo; }
public void setFoo(String foo) { this.foo = foo; }
...
public String myAction() {
// Get the value of the "foo" request parameter
String foo = getFoo();
...
}
...
}
The formula #{param.foo} is evaluated when the managed bean is created,
and extracts the value of the request parameter named "foo" and calls
setFoo() on your bean. By the time the action method is called, the
value will be there already.
Craig