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Determining whether an element contains a certain property [message #761237]

Tue, 06 December 2011 06:55

Roded Bahat

Messages: 152
Registered: August 2011

Senior Member

Hi,
I'm in the need of a condition which checks whether an element has a certain property.
At the moment, I'm doing the following:

property = element.getModelElementType().getProperty(this.property);
return property != null;

It works.
But for every failed getProperty() call, the host console shows the following message (in red nonetheless):

ERROR : Invalid model path "List" evaluated on my.package.IConstant.

Is there a better way?
Many thanks,
Roded

[Updated on: Tue, 06 December 2011 08:44]

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Re: Determining whether an element contains certain property [message #761281 is a reply to message #761237]

Tue, 06 December 2011 08:32

Konstantin Komissarchik

Messages: 1077
Registered: July 2009

Senior Member

Could you show me a snippet of sdef where this condition is used and "List" is referenced?

- Konstantin

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Re: Determining whether an element contains certain property [message #761286 is a reply to message #761281]

Tue, 06 December 2011 08:41

Roded Bahat

Messages: 152
Registered: August 2011

Senior Member

<if>
    <condition>
        <class>PropertyExistsCondition</class>
        <parameter>List</parameter>
    </condition>
    <then>
        <include>@composite.value.list</include>
    </then>
    <else>...</else>
</if>

I might be doing this is a bit of a non-standard way:
I have an basic IValue with no properties which IList (for example) extends and adds a List property.
My composite then determines the type of content to show based on which property exists.
Roded

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Re: Determining whether an element contains certain property [message #761303 is a reply to message #761286]

Tue, 06 December 2011 09:02

Konstantin Komissarchik

Messages: 1077
Registered: July 2009

Senior Member

That doesn't show what could possibly be causing that error. There must be other references to "List" somewhere else. ModelElementType.getProperty() doesn't cause this error...

    public ModelProperty getProperty( final String propertyName )
    {
        for( ModelProperty property : getProperties() )
        {
            if( property.getName().equalsIgnoreCase( propertyName ) )
            {
                return property;
            }
        }
        
        return null;
    }

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