[nhibernate-issues] [JIRA] Created: (NH-857) Filter parameter is mandatory and should be optional

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Filter parameter is mandatory and should be optional
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         Key: NH-857
         URL: http://jira.nhibernate.org/browse/NH-857
     Project: NHibernate
        Type: Bug
  Components: Core  
    Versions: 1.2.0.Beta2    
    Reporter: Luis Ferreira
    Priority: Minor

When a filter is declared with no parameters, an exception is raised.
For instance, we'd like to have a filter such as:

<filter-def name="Autorizacoes" condition="Classe = 1">

So, results are accepted if a column has as value a specified constant (rather than something variable). The resulting exception is:

A first chance exception of type 'NHibernate.MappingException' occurred in BancoDePortugal.SI.REI.Negocio.DLL

Additional information: Denominacao.hbm.xml(39,5): XML validation error: The element 'filter-def' in namespace 'urn:nhibernate-mapping-2.2' has incomplete content. List of possible elements expected: 'urn:nhibernate-mapping-2.2:filter-param'.

Of course a possible workaround is using a parameter instead of the constant, and pass the constant every time... but it is odd.

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