01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package javax.servlet.jsp;
18:
19: /**
20: * The JspEngineInfo is an abstract class that provides information on the
21: * current JSP engine.
22: */
23:
24: public abstract class JspEngineInfo {
25:
26: /**
27: * Sole constructor. (For invocation by subclass constructors,
28: * typically implicit.)
29: */
30: public JspEngineInfo() {
31: }
32:
33: /**
34: * Return the version number of the JSP specification that is supported by
35: * this JSP engine.
36: * <p>
37: * Specification version numbers that consists of positive decimal integers
38: * separated by periods ".", for example, "2.0" or "1.2.3.4.5.6.7".
39: * This allows an extensible number to be used to
40: * represent major, minor, micro, etc versions.
41: * The version number must begin with a number.
42: * </p>
43: *
44: * @return the specification version, null is returned if it is not known
45: */
46:
47: public abstract String getSpecificationVersion();
48: }
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