org.omg.cwm.objectmodel.instance
Interface DataValue
- All Superinterfaces:
- Element, Instance, ModelElement, javax.jmi.reflect.RefBaseObject, javax.jmi.reflect.RefFeatured, javax.jmi.reflect.RefObject
- All Known Subinterfaces:
- ColumnValue, MemberValue
- public interface DataValue
- extends Instance
A data value is an instance with no identity. In the metamodel, DataValue
is a child of Instance that cannot change its state, i.e. all
operations that are applicable to it are pure functions or queries that
do not cause any side effects. DataValues are typically used
as attribute
values.
Since it is not possible to differentiate between two data
values that appear to be the same, it becomes more of a philosophical issue
whether there are several data values representing the same value or just
one for each value. In addition, a data value cannot change its data type
and it does not have contained instances.
Method Summary |
java.lang.String |
getValue()
A string representation of the value. |
void |
setValue(java.lang.String newValue)
A string representation of the value. |
Methods inherited from interface javax.jmi.reflect.RefObject |
refClass, refDelete, refImmediateComposite, refIsInstanceOf, refOutermostComposite |
Methods inherited from interface javax.jmi.reflect.RefFeatured |
refGetValue, refGetValue, refInvokeOperation, refInvokeOperation, refSetValue, refSetValue |
Methods inherited from interface javax.jmi.reflect.RefBaseObject |
equals, hashCode, refImmediatePackage, refMetaObject, refMofId, refOutermostPackage, refVerifyConstraints |
getValue
public java.lang.String getValue()
throws javax.jmi.reflect.JmiException
- A string representation of the value.
setValue
public void setValue(java.lang.String newValue)
throws javax.jmi.reflect.JmiException
- A string representation of the value.
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