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/api/metadata/PropertyValueException.java
* @param propName
	 *            The name of the property being set.
	 */
	public void setPropertyName( String propName )
	{
		propertyName = propName;
	}
	/**
	 * Returns the invalid value.
	 * 
	 * @return the invalid value
	 */
	public Object getInvalidValue( )
	{
		return invalidValue;
	}
	/**
	 * Returns the name of the property being set.
	 * 
	 * @return the property name, or null if not known
	 */
	public String getPropertyName( )
	{
		return propertyName;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see java.lang.Throwable#getLocalizedMessage()
	 */