Bug 149251 Inconsistent Handling of a Non-inheritable ROM Property
For a ROM property defined to be non-inheritable, an empty string property value should be consistently handled as an empty string, not as null. For example, an oda.dataSource extension defines a data source property with canInherit=false. When a oda-data-source handle get saved in a report design, it correctly includes the tag for such property, even when an empty string value is specified. <oda-data-source extensionID="my.oda.plugin" name="my Data Source" id="24"> ... <property name="ApplicationServer"></property> </oda-data-source> However, later when using the DE API to read its property value, a null is returned. Then when the report design is subsequently saved, the property tag is lost. Expects that an empty string value of a non-inhertiable property should be preserved.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/plugin/ODAPropertyDefn.java
{
		PropertyChoice[] propertyChoices = property.getChoices( );
		ChoiceSet choiceSet = null;
		if ( propertyChoices != null && propertyChoices.length > 0 )
		{
			choiceSet = new ChoiceSet( );
			IChoice[] choices = new ODAChoice[propertyChoices.length];
			for ( int i = 0; i < propertyChoices.length; i++ )
			{
				choices[i] = new ODAChoice( propertyChoices[i] );
			}
			choiceSet.setChoices( choices );
		}
		return choiceSet;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.metadata.IPropertyDefn#hasChoices()
	 */
	public boolean hasChoices( )
	{
		return property.getChoices( ) != null
				&& property.getChoices( ).length > 0;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.metadata.IPropertyDefn#getStructDefn()
	 */