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/core/Module.java
/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.core.DesignElement#getSlot(int)
	 */
	public ContainerSlot getSlot( int slot )
	{
		assert slot >= 0 && slot < getSlotCount( );
		return slots[slot];
	}
	/**
	 * Records a semantic error during build and similar batch operations. This
	 * implementation is preliminary.
	 * 
	 * @param ex
	 *            the exception to record
	 */
	public void semanticError( SemanticException ex )
	{
		if ( allExceptions == null )
			allExceptions = new ArrayList( );
		allExceptions.add( ex );
	}
	/**
	 * Returns a list containing all errors during parsing the module file.
	 * 
	 * @return a list containing parsing errors. Each element in the list is
	 *         <code>ErrorDetail</code>.
	 * 
	 * @see ErrorDetail