Package org.eclipse.rdf4j.model.impl

Class DynamicModel

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<Statement>

org.eclipse.rdf4j.model.impl.DynamicModel

All Implemented Interfaces:

Serializable, Iterable<Statement>, Collection<Statement>, Set<Statement>, Model, NamespaceAware

public class DynamicModel
extends AbstractSet<Statement>
implements Model

A LinkedHashModel or a TreeModel achieves fast data access at the cost of higher indexing time. The DynamicModel postpones this cost until such access is actually needed. It stores all data in a LinkedHashMap and supports adding, retrieving and removing data. The model will upgrade to a full model (provided by the modelFactory) if more complex operations are called, for instance removing data according to a pattern (eg. all statements with rdf:type as predicate).

DynamicModel is thread safe to the extent that the underlying LinkedHashMap or Model is. The upgrade path is protected by the actual upgrade method being synchronized. The LinkedHashMap storage is not removed once upgraded, so concurrent reads that have started reading from the LinkedHashMap can continue to read even during an upgrade. We do make the LinkedHashMap unmodifiable to reduce the chance of there being a bug.

Author:

Håvard Mikkelsen Ottestad

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
DynamicModel(ModelFactory modelFactory)

Method Summary

Modifier and Type	Method	Description
boolean	add(Resource subj, IRI pred, Value obj, Resource... contexts)
boolean	add(Statement statement)
boolean	addAll(Collection<? extends Statement> c)
void	clear()
boolean	clear(Resource... context)
boolean	contains(Object o)
boolean	contains(Resource subj, IRI pred, Value obj, Resource... contexts)
boolean	containsAll(Collection<?> c)
Set<Resource>	contexts()
boolean	equals(Object o)
Model	filter(Resource subj, IRI pred, Value obj, Resource... contexts)
Optional<Namespace>	getNamespace(String prefix)
Set<Namespace>	getNamespaces()
Iterable<Statement>	getStatements(Resource subject, IRI predicate, Value object, Resource... contexts)
int	hashCode()
boolean	isEmpty()
Iterator<Statement>	iterator()
Set<Value>	objects()
Set<IRI>	predicates()
boolean	remove(Object o)
boolean	remove(Resource subj, IRI pred, Value obj, Resource... contexts)
boolean	removeAll(Collection<?> c)
Optional<Namespace>	removeNamespace(String prefix)
boolean	retainAll(Collection<?> c)
Namespace	setNamespace(String prefix, String name)
void	setNamespace(Namespace namespace)
int	size()
Set<Resource>	subjects()
Object[]	toArray()
<T> T[]	toArray(T[] a)
Model	unmodifiable()

Methods inherited from class java.util.AbstractCollection

toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

spliterator

Constructor Detail

DynamicModel

public DynamicModel(ModelFactory modelFactory)

Method Detail

unmodifiable

public Model unmodifiable()

Specified by:

unmodifiable in interface Model

getNamespace

public Optional<Namespace> getNamespace(String prefix)

Specified by:

getNamespace in interface NamespaceAware

getNamespaces

public Set<Namespace> getNamespaces()

Specified by:

getNamespaces in interface NamespaceAware

setNamespace

public Namespace setNamespace(String prefix,
                              String name)

Specified by:

setNamespace in interface Model

setNamespace

public void setNamespace(Namespace namespace)

Specified by:

setNamespace in interface Model

removeNamespace

public Optional<Namespace> removeNamespace(String prefix)

Specified by:

removeNamespace in interface Model

contains

public boolean contains(Resource subj,
                        IRI pred,
                        Value obj,
                        Resource... contexts)

Specified by:

contains in interface Model

add

public boolean add(Resource subj,
                   IRI pred,
                   Value obj,
                   Resource... contexts)

Specified by:

add in interface Model

clear

public boolean clear(Resource... context)

Specified by:

clear in interface Model

remove

public boolean remove(Resource subj,
                      IRI pred,
                      Value obj,
                      Resource... contexts)

Specified by:

remove in interface Model

filter

public Model filter(Resource subj,
                    IRI pred,
                    Value obj,
                    Resource... contexts)

Specified by:

filter in interface Model

subjects

public Set<Resource> subjects()

Specified by:

subjects in interface Model

predicates

public Set<IRI> predicates()

Specified by:

predicates in interface Model

objects

public Set<Value> objects()

Specified by:

objects in interface Model

contexts

public Set<Resource> contexts()

Specified by:

contexts in interface Model

size

public int size()

Specified by:

size in interface Collection<Statement>

Specified by:

size in interface Set<Statement>

Specified by:

size in class AbstractCollection<Statement>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<Statement>

Specified by:

isEmpty in interface Set<Statement>

Overrides:

isEmpty in class AbstractCollection<Statement>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<Statement>

Specified by:

contains in interface Set<Statement>

Overrides:

contains in class AbstractCollection<Statement>

iterator

public Iterator<Statement> iterator()

Specified by:

iterator in interface Collection<Statement>

Specified by:

iterator in interface Iterable<Statement>

Specified by:

iterator in interface Set<Statement>

Specified by:

iterator in class AbstractCollection<Statement>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<Statement>

Specified by:

toArray in interface Set<Statement>

Overrides:

toArray in class AbstractCollection<Statement>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface Collection<Statement>

Specified by:

toArray in interface Set<Statement>

Overrides:

toArray in class AbstractCollection<Statement>

add

public boolean add(Statement statement)

Specified by:

add in interface Collection<Statement>

Specified by:

add in interface Set<Statement>

Overrides:

add in class AbstractCollection<Statement>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<Statement>

Specified by:

remove in interface Set<Statement>

Overrides:

remove in class AbstractCollection<Statement>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<Statement>

Specified by:

containsAll in interface Set<Statement>

Overrides:

containsAll in class AbstractCollection<Statement>

addAll

public boolean addAll(Collection<? extends Statement> c)

Specified by:

addAll in interface Collection<Statement>

Specified by:

addAll in interface Set<Statement>

Overrides:

addAll in class AbstractCollection<Statement>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<Statement>

Specified by:

retainAll in interface Set<Statement>

Overrides:

retainAll in class AbstractCollection<Statement>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<Statement>

Specified by:

removeAll in interface Set<Statement>

Overrides:

removeAll in class AbstractSet<Statement>

clear

public void clear()

Specified by:

clear in interface Collection<Statement>

Specified by:

clear in interface Set<Statement>

Overrides:

clear in class AbstractCollection<Statement>

getStatements

public Iterable<Statement> getStatements(Resource subject,
                                         IRI predicate,
                                         Value object,
                                         Resource... contexts)

Specified by:

getStatements in interface Model

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<Statement>

Specified by:

equals in interface Set<Statement>

Overrides:

equals in class AbstractSet<Statement>

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<Statement>

Specified by:

hashCode in interface Set<Statement>

Overrides:

hashCode in class AbstractSet<Statement>