MemBNode.java
/*******************************************************************************
* Copyright (c) 2015 Eclipse RDF4J contributors, Aduna, and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Distribution License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*******************************************************************************/
package org.eclipse.rdf4j.sail.memory.model;
import org.eclipse.rdf4j.model.BNode;
/**
* A MemoryStore-specific extension of BNodeImpl giving it node properties.
*/
public class MemBNode extends MemResource implements BNode {
private static final long serialVersionUID = -887382892580321647L;
/*------------*
* Attributes *
*------------*/
/**
* The object that created this MemBNode.
*/
transient final private Object creator;
/**
* The list of statements for which this MemBNode is the object.
*/
transient private final MemStatementList objectStatements = new MemStatementList();
/**
* The blank node's identifier.
*/
private final String id;
/*--------------*
* Constructors *
*--------------*/
/**
* Creates a new MemBNode for a bnode ID.
*
* @param creator The object that is creating this MemBNode.
* @param id bnode ID.
*/
public MemBNode(Object creator, String id) {
this.id = id;
this.creator = creator;
}
/*---------*
* Methods *
*---------*/
@Override
public Object getCreator() {
return creator;
}
@Override
public boolean hasStatements() {
return !subjectStatements.isEmpty() || !objectStatements.isEmpty() || !contextStatements.isEmpty();
}
@Override
public MemStatementList getObjectStatementList() {
return objectStatements;
}
@Override
public int getObjectStatementCount() {
return objectStatements.size();
}
@Override
public void addObjectStatement(MemStatement st) throws InterruptedException {
objectStatements.add(st);
}
@Override
public void cleanSnapshotsFromObjectStatements(int currentSnapshot) throws InterruptedException {
objectStatements.cleanSnapshots(currentSnapshot);
}
@Override
public boolean hasPredicateStatements() {
return false;
}
@Override
public boolean hasObjectStatements() {
return !objectStatements.isEmpty();
}
@Override
public String getID() {
return id;
}
@Override
public String stringValue() {
return getID();
}
@Override
public boolean equals(Object o) {
return this == o || o instanceof BNode
&& getID().equals(((BNode) o).getID());
}
@Override
public int hashCode() {
return getID().hashCode();
}
@Override
public String toString() {
return "_:" + getID();
}
}