01: package org.apache.turbine.services.intake.validator;
02:
03: /*
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "License"); you may not use this file except in compliance
10: * with the License. You may obtain a copy of the License at
11: *
12: * http://www.apache.org/licenses/LICENSE-2.0
13: *
14: * Unless required by applicable law or agreed to in writing,
15: * software distributed under the License is distributed on an
16: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17: * KIND, either express or implied. See the License for the
18: * specific language governing permissions and limitations
19: * under the License.
20: */
21:
22: /**
23: * A constraint has a name and a value and an optional message.
24: * The name/value pair will have meaning to a Validator and the
25: * message will serve as an error message in the event the Validator
26: * determines the constraint is violated.
27: * example:
28: * name="maxLength"
29: * value="255"
30: * message="Value cannot be longer than 255 characters."
31: *
32: * @author <a href="mailto:jmcnally@collab.net">John McNally</a>
33: * @version $Id: Constraint.java 534527 2007-05-02 16:10:59Z tv $
34: */
35: public interface Constraint {
36: /**
37: * Get the name of the constraint.
38: */
39: String getName();
40:
41: /**
42: * Get the value of the constraint.
43: */
44: String getValue();
45:
46: /**
47: * Get the error message.
48: */
49: String getMessage();
50: }
|