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public interface TypeSystem
The interface to the type system. Used to access information about existing
types and features using
their String identifiers. This is a pure access interface. Types and features are defined using
Component Descriptors, written in XML.
Get the type system from a CAS object with getTypeSystem().
There are a few methods to list the existing types in a type system. Information about which
feature is appropriate for which type is available through the Type and
Feature classes.
| Field Summary | |
|---|---|
static char |
FEATURE_SEPARATOR
This is the character that separates a type name from a feature name. |
static char |
NAMESPACE_SEPARATOR
This is the character that separates name spaces. |
| Method Summary | |
|---|---|
Type |
getArrayType(Type componentType)
Obtain an array type with component type componentType. |
Vector<Type> |
getDirectlySubsumedTypes(Type type)
Deprecated. Use getDirectSubtypes(Type) instead. |
List<Type> |
getDirectSubtypes(Type type)
Get a List of the types directly subsumed by a given type. |
Feature |
getFeatureByFullName(String featureName)
Get a feature object for a given name. |
Iterator<Feature> |
getFeatures()
Get a list of features, in no particular order. |
org.apache.uima.cas.impl.LowLevelTypeSystem |
getLowLevelTypeSystem()
Return the low-level view of this type system. |
Type |
getParent(Type type)
Get the parent type for input type. |
List<Type> |
getProperlySubsumedTypes(Type type)
Return the list of all types subsumed by the input type. |
Type |
getTopType()
Get the top type, i.e., the root of the type system. |
Type |
getType(String typeName)
Get a type object for a given type name. |
Iterator<Type> |
getTypeIterator()
Get an iterator over all types, in no particular order. |
TypeNameSpace |
getTypeNameSpace(String name)
Create a type name space object for the name parameter. |
boolean |
subsumes(Type superType,
Type subType)
Does one type inherit from the other? |
| Field Detail |
|---|
static final char FEATURE_SEPARATOR
uima.cas.Annotation:begin.
static final char NAMESPACE_SEPARATOR
uima.cas.Annotation
| Method Detail |
|---|
Type getType(String typeName)
typeName - The name of the type.
null if no such type exists.Type getArrayType(Type componentType)
componentType.
componentType - The type of the elements of the resulting array type. This can be any type, even
another array type.
Feature getFeatureByFullName(String featureName)
featureName - The fully qualified name of the feature.
null if no such feature exists.Iterator<Type> getTypeIterator()
Type getTopType()
@Deprecated Vector<Type> getDirectlySubsumedTypes(Type type)
getDirectSubtypes(Type) instead.
type - The input type.
List<Type> getDirectSubtypes(Type type)
type - The input type.
List<Type> getProperlySubsumedTypes(Type type)
type - Input type.
type.Type getParent(Type type)
type - The type we want to know the parent of.
null for the top type.
boolean subsumes(Type superType,
Type subType)
superType - Supertype.subType - Subtype.
true iff sub inherits from super.Iterator<Feature> getFeatures()
TypeNameSpace getTypeNameSpace(String name)
name - The name of the name space.
TypeNameSpace object corresponding to name, or
null, if name is not a legal type name space identifier.org.apache.uima.cas.impl.LowLevelTypeSystem getLowLevelTypeSystem()
LowLevelTypeSystem version of
this type system.
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