01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * Portions Copyright Apache Software Foundation.
07: *
08: * The contents of this file are subject to the terms of either the GNU
09: * General Public License Version 2 only ("GPL") or the Common Development
10: * and Distribution License("CDDL") (collectively, the "License"). You
11: * may not use this file except in compliance with the License. You can obtain
12: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
13: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
14: * language governing permissions and limitations under the License.
15: *
16: * When distributing the software, include this License Header Notice in each
17: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
18: * Sun designates this particular file as subject to the "Classpath" exception
19: * as provided by Sun in the GPL Version 2 section of the License file that
20: * accompanied this code. If applicable, add the following below the License
21: * Header, with the fields enclosed by brackets [] replaced by your own
22: * identifying information: "Portions Copyrighted [year]
23: * [name of copyright owner]"
24: *
25: * Contributor(s):
26: *
27: * If you wish your version of this file to be governed by only the CDDL or
28: * only the GPL Version 2, indicate your decision by adding "[Contributor]
29: * elects to include this software in this distribution under the [CDDL or GPL
30: * Version 2] license." If you don't indicate a single choice of license, a
31: * recipient has the option to distribute your version of this file under
32: * either the CDDL, the GPL Version 2 or to extend the choice of license to
33: * its licensees as provided above. However, if you add GPL Version 2 code
34: * and therefore, elected the GPL Version 2 license, then the option applies
35: * only if the new code is made subject to such option by the copyright
36: * holder.
37: */
38: package javax.servlet.jsp;
39:
40: /**
41: * The JspEngineInfo is an abstract class that provides information on the
42: * current JSP engine.
43: */
44:
45: public abstract class JspEngineInfo {
46:
47: /**
48: * Sole constructor. (For invocation by subclass constructors,
49: * typically implicit.)
50: */
51: public JspEngineInfo() {
52: }
53:
54: /**
55: * Return the version number of the JSP specification that is supported by
56: * this JSP engine.
57: * <p>
58: * Specification version numbers that consists of positive decimal integers
59: * separated by periods ".", for example, "2.0" or "1.2.3.4.5.6.7".
60: * This allows an extensible number to be used to
61: * represent major, minor, micro, etc versions.
62: * The version number must begin with a number.
63: * </p>
64: *
65: * @return the specification version, null is returned if it is not known
66: */
67:
68: public abstract String getSpecificationVersion();
69: }
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