01: /*
02: * JBoss, Home of Professional Open Source
03: * Copyright 2005, JBoss Inc., and individual contributors as indicated
04: * by the @authors tag. See the copyright.txt in the distribution for a
05: * full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jbpm.identity.assignment;
23:
24: /**
25: * chops an actor assignment expression into terms.
26: */
27: public class TermTokenizer {
28:
29: private String expression = null;
30: private int index = 0;
31:
32: public TermTokenizer(String expression) {
33: this .expression = expression;
34: }
35:
36: public boolean hasMoreTerms() {
37: return (index != -1);
38: }
39:
40: public String nextTerm() {
41: String term = null;
42: int startIndex = index;
43: index = expression.indexOf("-->", index);
44: if (index != -1) {
45: term = expression.substring(startIndex, index).trim();
46: index += 3;
47: } else {
48: term = expression.substring(startIndex).trim();
49: }
50: return term;
51: }
52: }
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