==Basic definition==A namespace is an abstract container or environment created to hold a logical grouping of unique identifiers or symbols (i.e., names). An [[identifier]] defined in a namespace is associated only with that namespace. The same identifier can be independently defined in multiple namespaces. That is, the meaning associated with an identifier defined in one namespace may or may not have the same meaning as the same identifier defined in another namespace.
In large computer programs or documents it is not uncommon to have hundreds or thousands of identifiers. Namespaces provide a mechanism for hiding local identifiers. They provide a means of grouping logically related identifiers into corresponding namespaces, thereby making the system more modular.
<br>==Usage in {{UBIK}}==Namespaces are stored on every the Namespace property of several {{UBIK}} class types, such as [[MetaobjectMetaClass|MetaClasses]].The Metaobjects´ translation process reads the namespaces and attaches it to the standard namespace („UBIK.Runtime“ or „UBIK.Runtime.UI“).In the While there is no direct functionality behind this property, some controls in [[treeview{{UBIK}} Studio]] use it for structuring purposes, i.e. the [[viewsClass Browser]] [[Inheritance]] and [[Contentview]] are getting grouped and sorted by namespace.
===Namespaces for systemcontentobjects===
Every systemcontentobject owns or is able to own the property namespace. The name of this property is given to the object as a namespace.
If the value is empty or the property does not exist, the metaobjects´ namespace will be generated.
It is also possible, that objects do have an empty namespace property.
The systemcontentobjects will be sorted via namespace and displayed in the [[Contentview]].
===Namespaces for standardcontentobjects===
The namespace of a contentobject is default a emptystring.
If necessary, the property namespace can be attached to a contentobject. In this case the returnvalue is the properties value.
''It is recommended to not use this type of implementation.''
[[Category:UBIK]]