01: /**
02: * ========================================
03: * JFreeReport : a free Java report library
04: * ========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * $Id: PrecomputedValueRegistryBuilder.java 3525 2007-10-16 11:43:48Z tmorgner $
27: * ------------
28: * (C) Copyright 2000-2005, by Object Refinery Limited.
29: * (C) Copyright 2005-2007, by Pentaho Corporation.
30: */package org.jfree.report.data;
31:
32: /**
33: * This class is currently very primitive and enforces a recomputation of
34: * precomputed values each time.
35: *
36: * @author Thomas Morgner
37: */
38: public class PrecomputedValueRegistryBuilder implements
39: PrecomputedValueRegistry {
40: private PrecomputeNodeImpl node;
41:
42: public PrecomputedValueRegistryBuilder() {
43: }
44:
45: public void startElementPrecomputation(
46: final PrecomputeNodeKey element) {
47: startElement(element);
48: }
49:
50: public void finishElementPrecomputation(
51: final PrecomputeNodeKey element) {
52: finishElement(element);
53: }
54:
55: public void startElement(final PrecomputeNodeKey element) {
56: final PrecomputeNodeImpl newNode = new PrecomputeNodeImpl(
57: element);
58: if (node != null) {
59: newNode.setParent(node);
60: }
61: node = newNode;
62: }
63:
64: public void finishElement(final PrecomputeNodeKey element) {
65: node = (PrecomputeNodeImpl) node.getParent();
66: }
67:
68: public PrecomputeNode currentNode() {
69: return node;
70: }
71:
72: public void addFunction(final String name, final Object value) {
73: node.addFunction(name, value);
74: }
75: }
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