public class TextType extends HGAtomTypeBase
The implementation of the primitive String type for large
string values.
This implementation records the string using its getBytes
method.
Note that by default HyperGraph is configured to use StringType
for recording java.lang.String values. Therefore, when adding
atoms whose type is TextType, the type must be explicitly
specified in the HyperGraph.add method.
graph| Constructor and Description |
|---|
TextType() |
| Modifier and Type | Method and Description |
|---|---|
Object |
make(HGPersistentHandle handle,
LazyRef<HGHandle[]> targetSet,
IncidenceSetRef incidenceSet)
Construct a new run-time instance of a hypergraph atom.
|
void |
release(HGPersistentHandle handle)
Release a hypergraph value instance from the persistent store.
|
HGPersistentHandle |
store(Object instance)
Store a run-time instance of a hypergraph atom into the hypergraph
HGStore
as a new atom. |
getHyperGraph, setHyperGraph, subsumespublic Object make(HGPersistentHandle handle, LazyRef<HGHandle[]> targetSet, IncidenceSetRef incidenceSet)
HGAtomTypeConstruct a new run-time instance of a hypergraph atom. A plain node must
be constructed whenever the targetSet parameter is null or of
length 0. Otherwise, a HGLink instance must be constructed.
It is not required that all atom types be able to construct both plain (node)
atoms and HGLinks. It is up to an HGAtomType implementation
to support either or both. When a HGLink counterpart is not available
for a particular run-time type, an implementation may choose to create an instance
of the default link value holder implementation HGValuedLink, provided
by HyperGraph.
handle - The HGPersistentHandle of the atom value.targetSet - When the atom is a link, this parameter holds the target set of
the link. When the atom is a node, the parameter is an array of 0 length.incidenceSet - A lazy reference to the set of links pointing to this atom. This is
null if we are constructing an internal/nested value of some complex type.null.
In case the handle points to an invalid instance (inexisting or with
a erronous layout), the method should throw a HGException.public void release(HGPersistentHandle handle)
HGAtomTypeRelease a hypergraph value instance from the persistent store.
This method should be called when a HGPersistentHandle
returned from the store is no longer in use.
handle - The persistent handle of the value to release.public HGPersistentHandle store(Object instance)
HGAtomTypeStore a run-time instance of a hypergraph atom into the hypergraph HGStore
as a new atom.
instance - The atom instance.Copyright © 2015. All rights reserved.