hashmaps and hash tables in JSPs

2003-02-03 Thread Jordan Thomas 
HI,

I have a hastable or Hashmap of permissions that I want to use in my JSP
pages to determine what info is displayed to the user.



For instance I want to have the following logic

if permissionsHashMap has key Manage Countires
  then display this
if permissionsHashMap has key Manage Logins
  then display this

etc

Is there a way to do this with the struts logic tags?

thanks

Jordan


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RE: hashmaps and hash tables in JSPs

2003-02-03 Thread Jerome Jacobsen 
logic:notEmpty name=session property=permissionsHashMap(Manage
Countries)
 ... User has the Manage Countries permission
/logic:notEmpty

Or with JSTL

c:if test=${permissionsHashMap['Manage Countries']}
 ... User has the Manage Countries permission
/c:if


 -Original Message-
 From: Jordan Thomas [mailto:[EMAIL PROTECTED]]
 Sent: Monday, February 03, 2003 9:02 AM
 To: Struts User List
 Subject: hashmaps and hash tables in JSPs


 HI,

 I have a hastable or Hashmap of permissions that I want to use in my JSP
 pages to determine what info is displayed to the user.



 For instance I want to have the following logic

 if permissionsHashMap has key Manage Countires
   then display this
 if permissionsHashMap has key Manage Logins
   then display this

 etc

 Is there a way to do this with the struts logic tags?

 thanks

 Jordan


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 To unsubscribe, e-mail: [EMAIL PROTECTED]
 For additional commands, e-mail: [EMAIL PROTECTED]





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Re: hashmaps and hash tables in JSPs

2003-02-03 Thread Matthew Meyer 
You might looks at useing roles to acomplish this external 
to the JSP, AKA leave to logic out of the view, but 
otherwise a Hashmap can be checked as a map backed 
property like so..
logic:present name='permissionsHashMap' property='Manage 
Countires'

although I don't know how it will handle spaces in the 
property names..

On Mon, 3 Feb 2003 15:02:02 +0100
 Jordan Thomas [EMAIL PROTECTED] wrote:
HI,

I have a hastable or Hashmap of permissions that I want 
to use in my JSP
pages to determine what info is displayed to the user.



For instance I want to have the following logic

if permissionsHashMap has key Manage Countires
  then display this
if permissionsHashMap has key Manage Logins
  then display this

etc

Is there a way to do this with the struts logic tags?

thanks

Jordan


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[EMAIL PROTECTED]
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Re: hashmaps and hash tables in JSPs

2003-02-03 Thread Duane Morin 
 if permissionsHashMap has key Manage Countires
   then display this
 if permissionsHashMap has key Manage Logins
   then display this


In the interests of hiding the implementation (hashmap) from the 
presentation, would it perhaps be a better strategy to maybe expose a 
value object full of booleans, and then just have traditional true/false
logic, like this?

logic:equal bean=Permissions property=manageCountries value=true
 display this...
/logic:equal

and so on?  That way you've only really exposed minimal business logic, 
enough to tell your presentation layer what to display.  If you expose
a hashMap and then later put it into an array or vector or something, 
you're in trouble.

If you wanted to you could take that one step more and create your own 
Permissions custom tag that might act like this:

security:Permission op=manageCountries
 ...display this...
/security:Permission

Which completely hides everything, allowing you to even look up
permissions on the fly if you really wanted to.

Duane

 
 etc  
 Is there a way to do this with the struts logic tags?
 
 thanks
 
 Jordan
 
 
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RE: hashmaps and hash tables in JSPs

2003-02-03 Thread Jerome Jacobsen 
Woops, that logic:notEmpty example isn't right!  Not sure how you'd do it
with logic:notEmpty without the permissionsHashMap being a property of
another bean, say permissionsBean.  In that case it would look like this:

logic:notEmpty name=permissionsBean property=permissionsHashMap(Manage
Countries)
  ... User has the Manage Countries permission
/logic:notEmpty


 -Original Message-
 From: Jerome Jacobsen [mailto:[EMAIL PROTECTED]]
 Sent: Monday, February 03, 2003 9:19 AM
 To: Struts Users Mailing List
 Subject: RE: hashmaps and hash tables in JSPs


 logic:notEmpty name=session property=permissionsHashMap(Manage
 Countries)
  ... User has the Manage Countries permission
 /logic:notEmpty

 Or with JSTL

 c:if test=${permissionsHashMap['Manage Countries']}
  ... User has the Manage Countries permission
 /c:if


  -Original Message-
  From: Jordan Thomas [mailto:[EMAIL PROTECTED]]
  Sent: Monday, February 03, 2003 9:02 AM
  To: Struts User List
  Subject: hashmaps and hash tables in JSPs
 
 
  HI,
 
  I have a hastable or Hashmap of permissions that I want to use in my JSP
  pages to determine what info is displayed to the user.
 
 
 
  For instance I want to have the following logic
 
  if permissionsHashMap has key Manage Countires
then display this
  if permissionsHashMap has key Manage Logins
then display this
 
  etc
 
  Is there a way to do this with the struts logic tags?
 
  thanks
 
  Jordan
 
 
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  To unsubscribe, e-mail: [EMAIL PROTECTED]
  For additional commands, e-mail: [EMAIL PROTECTED]
 
 
 


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Re: hashmaps and hash tables in JSPs

2003-02-03 Thread Matthew Meyer 
you can access hashmap values by name without the map(val) 
notation.. this helps alot if you don't want to wrap the 
mapback property in a bean. for example..

logic:present name='wraperBean' property='map(val)'
can be done with the same map but without the wrapper bean 
like..
logic:present name='map' property='val'

I'm not sure if it's suppoed to work with way but it does, 
at least in 1.1b2

Matt,
 
On Mon, 3 Feb 2003 09:34:30 -0500
 Jerome Jacobsen [EMAIL PROTECTED] 
wrote:
Woops, that logic:notEmpty example isn't right!  Not sure 
how you'd do it
with logic:notEmpty without the permissionsHashMap being 
a property of
another bean, say permissionsBean.  In that case it would 
look like this:

logic:notEmpty name=permissionsBean 
property=permissionsHashMap(Manage
Countries)
  ... User has the Manage Countries permission
/logic:notEmpty


-Original Message-
From: Jerome Jacobsen 
[mailto:[EMAIL PROTECTED]]
Sent: Monday, February 03, 2003 9:19 AM
To: Struts Users Mailing List
Subject: RE: hashmaps and hash tables in JSPs


logic:notEmpty name=session 
property=permissionsHashMap(Manage
Countries)
 ... User has the Manage Countries permission
/logic:notEmpty

Or with JSTL

c:if test=${permissionsHashMap['Manage Countries']}
 ... User has the Manage Countries permission
/c:if


 -Original Message-
 From: Jordan Thomas [mailto:[EMAIL PROTECTED]]
 Sent: Monday, February 03, 2003 9:02 AM
 To: Struts User List
 Subject: hashmaps and hash tables in JSPs


 HI,

 I have a hastable or Hashmap of permissions that I 
want to use in my JSP
 pages to determine what info is displayed to the user.



 For instance I want to have the following logic

 if permissionsHashMap has key Manage Countires
   then display this
 if permissionsHashMap has key Manage Logins
   then display this

 etc

 Is there a way to do this with the struts logic tags?

 thanks

 Jordan


 
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