Bug 181121 Model should provide utility method for cube to get correspond dimension key.
In model cube handle, the relation of cube data set and dimension data sets are managed by a series of dimension condition handles.We need model to add utility method so that we can easily get corresponding dimension data set column names according to given cube dimension keys.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/PropertyStructure.java
public Object getLocalProperty( Module module, String memberName )
	{
		PropertyDefn prop = (PropertyDefn) getDefn( ).getMember( memberName );
		if ( prop == null )
			return null;
		return getLocalProperty( module, prop );
	}
	/**
	 * Sets the value of the property.
	 * 
	 * @param prop
	 *            the property definition
	 * 
	 * @param value
	 *            the value to set.
	 * 
	 */
	public final void setProperty( PropertyDefn prop, Object value )
	{
		assert prop != null;
		updateReference( prop, value );
		if ( prop.isIntrinsic( ) )
			setIntrinsicProperty( prop.getName( ), value );
		else if ( value == null )
			propValues.remove( prop.getName( ) );
		else
			propValues.put( prop.getName( ), value );
	}
	/*
	 * (non-Javadoc)