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
* @param colorName
	 *            the custom color name
	 * @return the custom defined color that matches, or <code>null</code> if
	 *         the color name was not found in the custom color palette.
	 */
	public CustomColor findColor( String colorName )
	{
		StructureDefn defn = (StructureDefn) MetaDataDictionary.getInstance( )
				.getStructure( CustomColor.CUSTOM_COLOR_STRUCT );
		return (CustomColor) StructureRefUtil.findStructure( this, defn,
				colorName );
	}
	/**
	 * Finds a config variable by name
	 * 
	 * @param variableName
	 *            the configure variable name
	 * @return the config variable that matches, or <code>null</code> if the
	 *         variable name was not found.
	 */
	public ConfigVariable findConfigVariabel( String variableName )
	{
		StructureDefn defn = (StructureDefn) MetaDataDictionary.getInstance( )
				.getStructure( ConfigVariable.CONFIG_VAR_STRUCT );
		return (ConfigVariable) StructureRefUtil.findStructure( this, defn,
				variableName );
	}
	/**
	 * Finds an embedded image by name.
	 *