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Java > Open Source Codes > org > jboss > aop > expressions > ConstructorExpression


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * 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.jboss.aop.expressions;
23
24 import javassist.CtConstructor;
25 import javassist.NotFoundException;
26
27 import java.lang.reflect.Constructor JavaDoc;
28 import java.util.regex.Matcher JavaDoc;
29 import java.util.regex.Pattern JavaDoc;
30
31 /**
32  * Comment
33  *
34  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
35  * @version $Revision: 37406 $
36  *
37  **/
38 public class ConstructorExpression
39 {
40    protected static final Pattern JavaDoc PATTERN = Pattern.compile("(.*)\\((.*)\\)");
41    public String JavaDoc originalExpression;
42    public ParameterExpression params;
43    public Pattern JavaDoc classExpr;
44    public String JavaDoc className;
45
46    public ConstructorExpression(String JavaDoc ex)
47    {
48       Matcher JavaDoc m = PATTERN.matcher(ex);
49       if (!m.matches()) throw new IllegalStateException JavaDoc("ConstructorExpression is invalid: " + ex);
50       className = m.group(1);
51       params = new ParameterExpression(m.group(2));
52       className = className.replaceAll("\\.", "\\\\.");
53       className = className.replaceAll("\\*", ".*");
54       classExpr = Pattern.compile(className);
55    }
56
57
58    public boolean matches(Constructor con)
59    {
60       Matcher JavaDoc cm = classExpr.matcher(con.getDeclaringClass().getName());
61       if (cm.matches() == false) return false;
62
63       return params.matches(con.getParameterTypes());
64    }
65
66    public boolean matchParamsOnly(Constructor con)
67    {
68       return params.matches(con.getParameterTypes());
69    }
70
71    public boolean matchParamsOnly(CtConstructor con) throws NotFoundException
72    {
73       return params.matches(con.getParameterTypes());
74    }
75
76    public boolean matches(CtConstructor con) throws NotFoundException
77    {
78       Matcher JavaDoc cm = classExpr.matcher(con.getDeclaringClass().getName());
79       if (cm.matches() == false) return false;
80
81       return params.matches(con.getParameterTypes());
82    }
83 }
84
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