Source Code Cross Referenced for AxionException.java in  » Database-DBMS » axion » org » axiondb » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » axion » org.axiondb 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Id: AxionException.java,v 1.9 2005/04/07 19:32:00 rwald Exp $
003:         * =======================================================================
004:         * Copyright (c) 2002-2005 Axion Development Team.  All rights reserved.
005:         *  
006:         * Redistribution and use in source and binary forms, with or without 
007:         * modification, are permitted provided that the following conditions 
008:         * are met:
009:         * 
010:         * 1. Redistributions of source code must retain the above 
011:         *    copyright notice, this list of conditions and the following 
012:         *    disclaimer. 
013:         *   
014:         * 2. Redistributions in binary form must reproduce the above copyright 
015:         *    notice, this list of conditions and the following disclaimer in 
016:         *    the documentation and/or other materials provided with the 
017:         *    distribution. 
018:         *   
019:         * 3. The names "Tigris", "Axion", nor the names of its contributors may 
020:         *    not be used to endorse or promote products derived from this 
021:         *    software without specific prior written permission. 
022:         *  
023:         * 4. Products derived from this software may not be called "Axion", nor 
024:         *    may "Tigris" or "Axion" appear in their names without specific prior
025:         *    written permission.
026:         *   
027:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
028:         * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
029:         * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
030:         * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
031:         * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
032:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
033:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
034:         * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
035:         * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
036:         * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
037:         * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
038:         * =======================================================================
039:         */
040:
041:        package org.axiondb;
042:
043:        import java.io.IOException;
044:        import java.io.InputStream;
045:        import java.util.PropertyResourceBundle;
046:
047:        /**
048:         * Root exception for Axion related or specific problems. This exception provides access
049:         * to Axion-specific SQL Vendor codes. Where possible they are mapped to SQL99 / XOPEN 99
050:         * SQL state codes.
051:         * <p>
052:         * SQLState codes consisti of 5 characters. The first 2 characters specify the error
053:         * class, the last three characters specify the subclass. For example, the SQLSTATE value
054:         * '22012' consists of class code 22 (data exception) and subclass code 012 (division by
055:         * zero). * Each of the five characters in a SQLSTATE value is a digit (0..9) or an
056:         * uppercase Latin letter (A..Z).
057:         * <p>
058:         * Class codes that begin with a digit in the range 0..4 or a letter in the range A..H are
059:         * reserved for predefined conditions. Within predefined classes, subclass codes that
060:         * begin with a digit in the range 0..4 or a letter in the range A..H are reserved for
061:         * predefined sub-conditions. All other subclass codes are reserved for
062:         * implementation-defined sub-conditions. (see ANSI-SQL99 specification).
063:         * 
064:         * @see {@link org.axiondb.util.ExceptionConverter}
065:         * @version $Revision: 1.9 $ $Date: 2005/04/07 19:32:00 $
066:         * @author Rodney Waldhoff
067:         */
068:        public class AxionException extends Exception {
069:            public final static int DEFAULT_VENDOR_CODE = 99999; //catch-all
070:            protected static PropertyResourceBundle _bundle = null;
071:
072:            /**
073:             * Equivalent to
074:             * {@link #AxionException(java.lang.String,java.lang.Throwable) AxionException(null,null,DEFAULT_VENDOR_CODE)}.
075:             */
076:            public AxionException() {
077:                this (null, null, DEFAULT_VENDOR_CODE);
078:            }
079:
080:            /**
081:             * Equivalent to
082:             * {@link #AxionException(java.lang.String,java.lang.Throwable,int) AxionException(null,null,vendorcode)}.
083:             */
084:            public AxionException(int vendorcode) {
085:                this (null, null, vendorcode);
086:            }
087:
088:            /**
089:             * Equivalent to
090:             * {@link #AxionException(java.lang.String,java.lang.Throwable,int) AxionException(message,null,DEFAULT_VENDOR_CODE)}.
091:             */
092:            public AxionException(String message) {
093:                this (message, null, DEFAULT_VENDOR_CODE);
094:            }
095:
096:            /**
097:             * Equivalent to
098:             * {@link #AxionException(java.lang.String,java.lang.Throwable,int) AxionException(message,null,vendorcode)}.
099:             */
100:            public AxionException(String message, int vendorcode) {
101:                this (message, null, vendorcode);
102:            }
103:
104:            /**
105:             * Construct a new {@link AxionException}with the given <i>message </i>, wrapping the
106:             * given {@link Throwable}.
107:             * 
108:             * @param message my detailed message (possibly <code>null</code>)
109:             * @param nested a {@link Throwable}to wrap (possibly <code>null</code>)
110:             * @param vendorcode an error code
111:             */
112:            public AxionException(String message, Throwable nested,
113:                    int vendorcode) {
114:                super (null == message ? (null == nested ? null : nested
115:                        .toString()) : (null == nested ? message : message
116:                        + " (" + nested.toString() + ")"));
117:                _nested = nested;
118:                _vendorCode = vendorcode;
119:            }
120:
121:            /**
122:             * Equivalent to
123:             * {@link #AxionException(java.lang.String,java.lang.Throwable) AxionException(message,nested,DEFAULT_VENDOR_CODE)}.
124:             */
125:            public AxionException(String message, Throwable nested) {
126:                this (message, nested, DEFAULT_VENDOR_CODE);
127:            }
128:
129:            /**
130:             * Equivalent to
131:             * {@link #AxionException(java.lang.String,java.lang.Throwable) AxionException(null,nested,DEFAULT_VENDOR_CODE)}.
132:             */
133:            public AxionException(Throwable nested) {
134:                this (null, nested, DEFAULT_VENDOR_CODE);
135:            }
136:
137:            /**
138:             * Equivalent to
139:             * {@link #AxionException(java.lang.String,java.lang.Throwable) AxionException(null,nested,vendorcode)}.
140:             */
141:            public AxionException(Throwable nested, int vendorcode) {
142:                this (null, nested, vendorcode);
143:            }
144:
145:            /** Returns the Axion-specific vendor code for this exception */
146:            public int getVendorCode() {
147:                return _vendorCode;
148:            }
149:
150:            /** Returns the detail message string of this AxionException */
151:            public String getMessage() {
152:                if (super .getMessage() != null) {
153:                    return super .getMessage();
154:                }
155:                // Load other Error code translations from a properties file
156:                return getErrorMessage(_vendorCode);
157:            }
158:
159:            /**
160:             * Returns the five-digit SQL State code (as defined in the ANSI-SQL 99 standard). The
161:             * translation works as follows:
162:             * <p>-- any vendor code lower than 100000 is just converted to a String.
163:             * <p>-- vendor codes 10000 and over use the following rules: a) first digit
164:             * indicates the position of a non-digit character.
165:             * <p>
166:             * <li>1: Second Class Digit is Alphanumeric (e.g. SQL StateCode "0Z001")
167:             * <li>2: Last Subclass Digit is Alphanumeric (e.g. "2200E")
168:             * <li>3: Second Class Digit and Last Subclass Digit are alphanumeric
169:             * <li>4: Other case (e.g. for class HZ) --> explicit conversion value (must be
170:             * assigned directly in code) b) Alpha Character is translated into its position in
171:             * the Alphabet (e.g. H=08; Z=26) etc. thus 1026001 is translated into 0Z001 32080001
172:             * would be translated into 2H00A
173:             */
174:            public String getSQLState() {
175:                String sqlstate;
176:                if (_vendorCode < 100000) {
177:                    sqlstate = String.valueOf(_vendorCode);
178:                    while (sqlstate.length() < 5) { //leftpad with zeros
179:                        sqlstate = '0' + sqlstate;
180:                    }
181:                    return sqlstate;
182:                }
183:
184:                final String CONVERSION_ERROR = "99099";
185:                sqlstate = String.valueOf(_vendorCode);
186:                if (sqlstate.charAt(0) > '3') { //special cases that can not be calculated
187:                    if (_vendorCode == 499000) {
188:                        return "HZ000";
189:                    }
190:                    return CONVERSION_ERROR;
191:                }
192:
193:                // transform last two digits of class into a character
194:                if (sqlstate.charAt(0) == '1' || sqlstate.charAt(0) == '3') {
195:                    int charnum = Integer.parseInt(sqlstate.substring(2, 4));
196:                    sqlstate = sqlstate.substring(0, 2) + (char) (64 + charnum)
197:                            + sqlstate.substring(4, sqlstate.length());
198:                }
199:
200:                //transform last two digits of subclass into a character
201:                if (sqlstate.charAt(0) == '2' || sqlstate.charAt(1) == '3') {
202:                    int charnum = Integer.parseInt(sqlstate.substring(sqlstate
203:                            .length() - 2, sqlstate.length()));
204:                    sqlstate = sqlstate.substring(0, 5) + (char) (64 + charnum);
205:                }
206:                sqlstate = sqlstate.substring(1, sqlstate.length());
207:
208:                return sqlstate;
209:            }
210:
211:            private static String getErrorMessage(int vendorcode) {
212:                try {
213:                    if (_bundle == null) {
214:                        getResourceBundle("org/axiondb/AxionStateCodes.properties");
215:                    }
216:                    return _bundle.getString(String.valueOf(vendorcode));
217:                } catch (Exception e) {
218:                    return "-- Unknown Exception (" + vendorcode + ") --";
219:                }
220:            }
221:
222:            private static void getResourceBundle(String bundleFile)
223:                    throws IOException {
224:                ClassLoader cl = AxionException.class.getClassLoader();
225:                InputStream in = null;
226:                try {
227:                    in = cl.getResourceAsStream(bundleFile);
228:                    _bundle = new PropertyResourceBundle(in);
229:                } finally {
230:                    in.close();
231:                }
232:            }
233:
234:            /**
235:             * Return the {@link Throwable}I'm wrapping, if any.
236:             * 
237:             * @return the {@link Throwable}I'm wrapping, if any.
238:             */
239:            public Throwable getNestedThrowable() {
240:                return _nested;
241:            }
242:
243:            private Throwable _nested = null;
244:            private int _vendorCode;
245:        }
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