NODE.java

/*
 * Copyright (c) 2010 Mysema Ltd.
 * All rights reserved.
 * 
 */
package com.mysema.rdfbean.model;

import java.io.Serializable;

import javax.annotation.concurrent.Immutable;

/**
 * NODE represents a general RDF node
 * 
 * @author sasa
 * 
 */
@Immutable
public abstract class NODE implements Serializable {

    private static final long serialVersionUID = -6921484648846884179L;

    // This is closed api
    NODE() {
    }

    public abstract String getValue();

    public abstract NodeType getNodeType();

    public abstract boolean isResource();

    public abstract boolean isURI();

    public abstract boolean isBNode();

    public abstract boolean isLiteral();

    public LIT asLiteral() {
        throw new UnsupportedOperationException();
    }

    public ID asResource() {
        throw new UnsupportedOperationException();
    }

    public UID asURI() {
        throw new UnsupportedOperationException();
    }

    public BID asBNode() {
        throw new UnsupportedOperationException();
    }
}