01: /*
02: * (c) Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
03: * All rights reserved.
04: *
05: * Redistribution and use in source and binary forms, with or without
06: * modification, are permitted provided that the following conditions
07: * are met:
08: * 1. Redistributions of source code must retain the above copyright
09: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. The name of the author may not be used to endorse or promote products
14: * derived from this software without specific prior written permission.
15:
16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26: *
27: * SeqNodeIteratorImpl.java
28: *
29: * Created on 12 August 2000, 15:37
30: */
31:
32: package com.hp.hpl.jena.rdf.model.impl;
33:
34: import com.hp.hpl.jena.util.iterator.*;
35: import com.hp.hpl.jena.rdf.model.*;
36:
37: import java.util.NoSuchElementException;
38: import java.util.Iterator;
39:
40: /** An internal class not normally of interest to developers.
41: * A sequence node iterator.
42: *
43: * @author bwm
44: * @version Release='$Name: $' Revision='$Revision: 1.11 $' Date='$Date: 2008/01/02 12:05:05 $'
45: */
46: public class SeqNodeIteratorImpl extends WrappedIterator implements
47: NodeIterator {
48:
49: Seq seq;
50: int size;
51: int index = 0;
52: Statement stmt = null;
53: private int numDeleted = 0;
54:
55: /** Creates new SeqNodeIteratorImpl
56: */
57: public SeqNodeIteratorImpl(Iterator iterator, Seq seq) {
58: super (iterator);
59: this .seq = seq;
60: this .size = seq.size();
61: }
62:
63: public Object next() throws NoSuchElementException {
64: stmt = (Statement) super .next();
65: index += 1;
66: return stmt.getObject();
67: }
68:
69: public RDFNode nextNode() throws NoSuchElementException {
70: return (RDFNode) next();
71: }
72:
73: public void remove() throws NoSuchElementException {
74: if (stmt == null)
75: throw new NoSuchElementException();
76: ((ContainerI) seq).remove(index - numDeleted, stmt.getObject());
77: stmt = null;
78: numDeleted++;
79: }
80:
81: public void close() {
82: super.close();
83: }
84: }
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