Description Konstantin Komissarchik 2011-09-08 16:59:53 EDT

Suppose you have a model containing a list of elements where properties of these elements declare dependencies to other elements in the list. 

The @DependsOn refreshes work fine if you start from scratch and build up the model, however if you load an existing model, the @DependsOn refreshes are not triggered until you modify the list (adding or removing an element).

Test setup that can be used to repro the problem...

@GenerateImpl
@XmlRootBinding( elementName = "root" )

public interface TestElementRoot extends IModelElement
{
    ModelElementType TYPE = new ModelElementType( TestElementRoot.class );
    
    // *** Children ***
    
    @Type( base = TestElementChild.class )
    @XmlListBinding( mappings = @XmlListBinding.Mapping( element = "child", type = TestElementChild.class ) )

    ListProperty PROP_CHILDREN = new ListProperty( TYPE, "Children" );
    
    ModelElementList<TestElementChild> getChildren();
}

@GenerateImpl

public interface TestElementChild extends IModelElement
{
    ModelElementType TYPE = new ModelElementType( TestElementChild.class );
    
    // *** Id ***
    
    @Required
    @XmlBinding( path = "id" )
    
    ValueProperty PROP_ID = new ValueProperty( TYPE, "Id" );
    
    Value<String> getId();
    void setId( String value );
    
    // *** Reference ***
    
    @XmlBinding( path = "reference" )
    
    ValueProperty PROP_REFERENCE = new ValueProperty( TYPE, "Reference" );
    
    Value<String> getReference();
    void setReference( String value );
    
    // *** Content ***
    
    @DependsOn( { "Reference", "#/Id", "#/Content" } )
    @Service( impl = ContentDefaultValueService.class )
    @XmlBinding( path = "content" )
    
    ValueProperty PROP_CONTENT = new ValueProperty( TYPE, "Content" );
    
    Value<String> getContent();
    void setContent( String value );
}

public final class ContentDefaultValueService extends DefaultValueService
{
    @Override
    public String getDefaultValue()
    {
        final TestElementChild element = nearest( TestElementChild.class );
        final String ref = element.getReference().getText();
        
        if( ref != null )
        {
            final TestElementRoot root = nearest( TestElementRoot.class );
            
            for( TestElementChild child : root.getChildren() )
            {
                if( child != element && ref.equals( child.getId().getText() ) )
                {
                    return child.getContent().getText();
                }
            }
        }
        
        return null;
    }
}