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From Michael Duffy <duff...@yahoo.com>
Subject RE: Logic:Equal Question.
Date Thu, 08 May 2003 17:56:44 GMT

Thank you for the feedback, John.  I won't give out
that incorrect advice again.  Hearing the right answer
would be most appreciated.  - MOD


--- John De Lello <JohnD@DelWare.com> wrote:
> OK, I tried your suggestion and added a method
> signature of: "public boolean
> isHasResults( )" on VWDynaValidatorForm. I get the
> same results.
> javax.servlet.ServletException: Exception accessing
> property hasResults for
> bean paymentReviewForm:
> java.lang.NoSuchMethodException: Unknown property
> 'hasResults'
> 
> Here is the class definition of my form:
> 
> package com.vwks.ing.form;
> 
> import
> org.apache.struts.validator.DynaValidatorForm;
> 
>  public class VWDynaValidatorForm extends
> DynaValidatorForm{
>     protected boolean       exceededRowLimit    =
> false;
>     protected boolean       hasResults          =
> false;
> 
>     public boolean isHasResults() {
>         return hasResults;
>     }
> 
>     public boolean getHasResults() {
>         return hasResults;
>     }
> 
> 
>     public void setHasResults(boolean hasResults) {
>         this.hasResults = hasResults;
>     }
> }
> 
> 
> 
> Thank you for the responses and sorry about the
> double-post (not sure how
> that happened)
> John
> 
> 
> -----Original Message-----
> From: Jim Kennedy [mailto:jimk@gigaheads.com] 
> Sent: Thursday, May 08, 2003 1:35 PM
> To: Tag Libraries Users List
> Subject: Re: Logic:Equal Question.
> 
> 
> Michael, You are correct about the Bean Spec, see
> below:
> 
> JavaBeans Introspection
> Sun Microsystems 55 7/24/97
> Although use of the standard naming patterns is
> optional, we strongly
> recommend their use as standard naming conventions
> are an extremely valuable
> documentation technique.
> 
> 8.3 Design Patterns for Properties
> 
> 8.3.1 Simple properties
> By default, we use design patterns to locate
> properties by looking for
> methods of the form: public < PropertyType> get<
> PropertyName>(); public
> void set< PropertyName>(< PropertyType> a); If we
> discover a matching pair
> of "get<PropertyName>" and  "set<PropertyName>"
> methods that take and return
> the same type, then we regard these methods as
> defining a read-write
> property whose name will be "<propertyName>". We
> will use the
> "get<PropertyName>" method to get the property value
> and the
> "set<PropertyName>" method to set the property
> value. The pair of methods
> may be located either in the same class or one may
> be in a base class and
> the other may be in a derived class. If we find only
> one of these methods,
> then we regard it as defining either a read-only or
> a writeonly property
> called "<propertyName>" By default we assume that
> properties are neither
> bound nor constrained (see Section 7). So a simple
> read-write property "foo"
> might be represented by a pair of
> methods:
> public Wombat getFoo();
> public void setFoo(Wombat w);
> 
> 8.3.2 Boolean properties
> In addition, for boolean properties, we allow a
> getter method to match the
> pattern:
> public boolean is< PropertyName>();
> This "is<PropertyName>" method may be provided
> instead of a
> "get<PropertyName>" method, or it may be provided in
> addition to a
> "get<PropertyName>" method. In either case, if the
> "is<PropertyName>" method
> is present for a boolean property then we will use
> the "is<PropertyName>"
> method to read the property value. An example
> boolean property might be:
> public boolean isMarsupial(); public void
> setMarsupial(boolean m);
> 
> 8.3.3 Indexed properties
> If we find a property whose type is an array
> "<PropertyElement>[]", then we
> also look for methods of the form: public <
> PropertyElement> get<
> PropertyName>(int a); public void set<
> PropertyName>(int a, <
> PropertyElement> b); If we find either kind of
> pattern then we assume that
> "<propertyName>" is an indexed property and that
> these methods can be used
> to read and/or write an indexed value. Thus an
> indexed property "foo" might
> be represented by four accessor
> methods:
> 
> Jim Kennedy
> IT Consultant
> Mobile Phone: 813-503-1484
>
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> 
> 
> 
> 
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