TripleStore (Apache Jena)

All Known Implementing Classes:

GraphTripleStore, GraphTripleStoreBase, GraphTripleStoreMem
```
public interface TripleStore
```
TripleStore - interface for bulk storage of triples used in composed graphs.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`add(Triple t)`	Add a triple to this triple store.
`void`	`clear()`	Clear this store, ie remove all triples from it.
`void`	`close()`	Destroy this triple store - discard the indexes.
`boolean`	`contains(Triple t)`	Answer true iff this triple store contains the (concrete) triple `t`.
`void`	`delete(Triple t)`	Remove a triple from this triple store.
`ExtendedIterator<Triple>`	`find(Triple t)`	Answer an ExtendedIterator returning all the triples from this store that match the pattern `m = (S, P, O)`.
`boolean`	`isEmpty()`	Answer true iff this triple store is empty.
`ExtendedIterator<Node>`	`listObjects()`	Answer an setwise iterator over all the objects of triples in this store.
`ExtendedIterator<Node>`	`listPredicates()`	Answer an iterator over all the predicates of triples in this store.
`ExtendedIterator<Node>`	`listSubjects()`	Answer an setwise iterator over all the subjects of triples in this store.
`int`	`size()`	Answer the size (number of triples) of this triple store.

- Method Detail
  - close
```
void close()
```
    Destroy this triple store - discard the indexes.
  - add
```
void add(Triple t)
```
    Add a triple to this triple store.
  - delete
```
void delete(Triple t)
```
    Remove a triple from this triple store.
  - size
```
int size()
```
    Answer the size (number of triples) of this triple store.
  - isEmpty
```
boolean isEmpty()
```
    Answer true iff this triple store is empty.
  - contains
```
boolean contains(Triple t)
```
    Answer true iff this triple store contains the (concrete) triple t.
  - listSubjects
```
ExtendedIterator<Node> listSubjects()
```
    Answer an setwise iterator over all the subjects of triples in this store.
  - listPredicates
```
ExtendedIterator<Node> listPredicates()
```
    Answer an iterator over all the predicates of triples in this store.
  - listObjects
```
ExtendedIterator<Node> listObjects()
```
    Answer an setwise iterator over all the objects of triples in this store.
  - find
```
ExtendedIterator<Triple> find(Triple t)
```
    Answer an ExtendedIterator returning all the triples from this store that match the pattern m = (S, P, O).
  - clear
```
void clear()
```
    Clear this store, ie remove all triples from it.