Source Code Cross Referenced for AbstractValidationMessage.java in  » Swing-Library » jgoodies-validation » com » jgoodies » validation » message » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » jgoodies validation » com.jgoodies.validation.message 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 2003-2007 JGoodies Karsten Lentzsch. All Rights Reserved.
003:         *
004:         * Redistribution and use in source and binary forms, with or without
005:         * modification, are permitted provided that the following conditions are met:
006:         *
007:         *  o Redistributions of source code must retain the above copyright notice,
008:         *    this list of conditions and the following disclaimer.
009:         *
010:         *  o Redistributions in binary form must reproduce the above copyright notice,
011:         *    this list of conditions and the following disclaimer in the documentation
012:         *    and/or other materials provided with the distribution.
013:         *
014:         *  o Neither the name of JGoodies Karsten Lentzsch nor the names of
015:         *    its contributors may be used to endorse or promote products derived
016:         *    from this software without specific prior written permission.
017:         *
018:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
019:         * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
020:         * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
021:         * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
022:         * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
023:         * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
024:         * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
025:         * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
026:         * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
027:         * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
028:         * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029:         */
030:
031:        package com.jgoodies.validation.message;
032:
033:        import java.io.Serializable;
034:
035:        import com.jgoodies.validation.Severity;
036:        import com.jgoodies.validation.ValidationMessage;
037:
038:        /**
039:         * An abstract class that minimizes the effort required to implement the
040:         * {@link ValidationMessage} interface. Holds the severity, a text message,
041:         * and the association key.<p>
042:         *
043:         * Subclasses should implement <code>#equals</code> and <code>#hashCode</code>
044:         * to prevent unnecessary change notifications for the <em>result</em> property
045:         * when a ValidationResultModel gets a new ValidationResult. See for example
046:         * the implementation of method {@link PropertyValidationMessage#equals(Object)}.
047:         *
048:         * @author  Karsten Lentzsch
049:         * @version $Revision: 1.7 $
050:         */
051:        public abstract class AbstractValidationMessage implements 
052:                ValidationMessage, Serializable {
053:
054:            /**
055:             * Holds this message's severity, either error or warning.
056:             */
057:            private final Severity severity;
058:
059:            /**
060:             * Holds the text messages.
061:             */
062:            private final String text;
063:
064:            /**
065:             * Holds the association key that can be used to model a loose coupling
066:             * between messages and views.
067:             *
068:             * @see ValidationMessage
069:             * @see #key()
070:             * @see com.jgoodies.validation.ValidationResult#subResult(Object)
071:             * @see com.jgoodies.validation.ValidationResult#keyMap()
072:             */
073:            private Object key;
074:
075:            // Instance Creation ******************************************************
076:
077:            /**
078:             * Constructs an AbstractValidationMessage for the given text and Severity.
079:             *
080:             * @param text       describes this message
081:             * @param severity   this message's severity, either error or warning
082:             *
083:             * @throws IllegalArgumentException if severity is <code>Severity.OK</code>
084:             */
085:            protected AbstractValidationMessage(String text, Severity severity) {
086:                this (text, severity, null);
087:            }
088:
089:            /**
090:             * Constructs an AbstractValidationMessage for the given text,
091:             * Severity, and association key.
092:             *
093:             * @param text       describes this message
094:             * @param severity   this message's severity, either error or warning
095:             * @param key        used to determine whether this message belongs
096:             *     to a given view
097:             *
098:             * @throws IllegalArgumentException if severity is <code>Severity.OK</code>
099:             */
100:            protected AbstractValidationMessage(String text, Severity severity,
101:                    Object key) {
102:                if (severity == Severity.OK) {
103:                    throw new IllegalArgumentException(
104:                            "Cannot create a validation messages with Severity.OK.");
105:                }
106:                this .text = text;
107:                this .severity = severity;
108:                setKey(key);
109:            }
110:
111:            // Implementation of the ValidationMessage API ****************************
112:
113:            /**
114:             * Returns this message's severity, either error or warning.
115:             *
116:             * @return message's severity, either error or warning
117:             */
118:            public final Severity severity() {
119:                return severity;
120:            }
121:
122:            /**
123:             * Returns a message description as formatted text. This default
124:             * implementation just returns the message text.
125:             * Subclasses may override to add information about the type and
126:             * other message related information.
127:             *
128:             * @return a message description as formatted text
129:             */
130:            public String formattedText() {
131:                return text();
132:            }
133:
134:            /**
135:             * Returns this validation message's text.
136:             *
137:             * @return the message text
138:             */
139:            protected final String text() {
140:                return text;
141:            }
142:
143:            /**
144:             * Returns this message's association key that can be used to model
145:             * a loose coupling between validation messages and views that present
146:             * the validated data.<p>
147:             *
148:             * Subclasses may override this method to return keys that are built from
149:             * other internal data. For example, the {@link PropertyValidationMessage}
150:             * returns the <em>aspect</em> as key.<p>
151:             *
152:             * See the class comment for more information about this relation.
153:             *
154:             * @return this message's association key
155:             */
156:            public Object key() {
157:                return key;
158:            }
159:
160:            /**
161:             * Sets the given object as new association key.
162:             *
163:             * @param associationKey  the key to be set
164:             */
165:            protected final void setKey(Object associationKey) {
166:                key = associationKey;
167:            }
168:
169:            /**
170:             * Returns a string representation of this validation message.
171:             * Prints the class name and the formatted text.
172:             *
173:             * @return a string representation of this validation message
174:             * @see Object#toString()
175:             */
176:            @Override
177:            public String toString() {
178:                return getClass().getName() + ": " + formattedText();
179:            }
180:
181:        }
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