Source Code Cross Referenced for ErrorReceiver.java in  » 6.0-JDK-Modules » jaxb-xjc » com » sun » tools » xjc » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » jaxb xjc » com.sun.tools.xjc 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003:         * 
004:         * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005:         * 
006:         * The contents of this file are subject to the terms of either the GNU
007:         * General Public License Version 2 only ("GPL") or the Common Development
008:         * and Distribution License("CDDL") (collectively, the "License").  You
009:         * may not use this file except in compliance with the License. You can obtain
010:         * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
011:         * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
012:         * language governing permissions and limitations under the License.
013:         * 
014:         * When distributing the software, include this License Header Notice in each
015:         * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
016:         * Sun designates this particular file as subject to the "Classpath" exception
017:         * as provided by Sun in the GPL Version 2 section of the License file that
018:         * accompanied this code.  If applicable, add the following below the License
019:         * Header, with the fields enclosed by brackets [] replaced by your own
020:         * identifying information: "Portions Copyrighted [year]
021:         * [name of copyright owner]"
022:         * 
023:         * Contributor(s):
024:         * 
025:         * If you wish your version of this file to be governed by only the CDDL or
026:         * only the GPL Version 2, indicate your decision by adding "[Contributor]
027:         * elects to include this software in this distribution under the [CDDL or GPL
028:         * Version 2] license."  If you don't indicate a single choice of license, a
029:         * recipient has the option to distribute your version of this file under
030:         * either the CDDL, the GPL Version 2 or to extend the choice of license to
031:         * its licensees as provided above.  However, if you add GPL Version 2 code
032:         * and therefore, elected the GPL Version 2 license, then the option applies
033:         * only if the new code is made subject to such option by the copyright
034:         * holder.
035:         */
036:
037:        /*
038:         * Use is subject to the license terms.
039:         */
040:        package com.sun.tools.xjc;
041:
042:        import com.sun.istack.SAXParseException2;
043:        import com.sun.tools.xjc.api.ErrorListener;
044:
045:        import org.xml.sax.ErrorHandler;
046:        import org.xml.sax.Locator;
047:        import org.xml.sax.SAXParseException;
048:
049:        /**
050:         * Implemented by the driver of the compiler engine to handle
051:         * errors found during the compiliation.
052:         * 
053:         * <p>
054:         * This class implements {@link ErrorHandler} so it can be
055:         * passed to anywhere where {@link ErrorHandler} is expected.
056:         * 
057:         * <p>
058:         * However, to make the error handling easy (and make it work
059:         * with visitor patterns nicely),
060:         * none of the methods on thi class throws {@link org.xml.sax.SAXException}.
061:         * Instead, when the compilation needs to be aborted,
062:         * it throws {@link AbortException}, which is unchecked.
063:         * 
064:         * <p>
065:         * This also implements the externally visible {@link ErrorListener}
066:         * so that we can reuse our internal implementation for testing and such.
067:         * 
068:         * @author Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
069:         */
070:        public abstract class ErrorReceiver implements  ErrorHandler,
071:                ErrorListener {
072:
073:            //
074:            //
075:            // convenience methods for callers
076:            //    
077:            //
078:            /**
079:             * @param loc
080:             *      can be null if the location is unknown
081:             */
082:            public final void error(Locator loc, String msg) {
083:                error(new SAXParseException2(msg, loc));
084:            }
085:
086:            public final void error(Locator loc, String msg, Exception e) {
087:                error(new SAXParseException2(msg, loc, e));
088:            }
089:
090:            public final void error(String msg, Exception e) {
091:                error(new SAXParseException2(msg, null, e));
092:            }
093:
094:            public void error(Exception e) {
095:                error(e.getMessage(), e);
096:            }
097:
098:            /**
099:             * @param loc
100:             *      can be null if the location is unknown
101:             */
102:            public final void warning(Locator loc, String msg) {
103:                warning(new SAXParseException(msg, loc));
104:            }
105:
106:            //
107:            //
108:            // ErrorHandler implementation, but can't throw SAXException
109:            //
110:            //
111:            public abstract void error(SAXParseException exception)
112:                    throws AbortException;
113:
114:            public abstract void fatalError(SAXParseException exception)
115:                    throws AbortException;
116:
117:            public abstract void warning(SAXParseException exception)
118:                    throws AbortException;
119:
120:            /**
121:             * This method will be invoked periodically to allow {@link AbortException}
122:             * to be thrown, especially when this is driven by some kind of GUI.
123:             */
124:            public void pollAbort() throws AbortException {
125:            }
126:
127:            /**
128:             * Reports verbose messages to users.
129:             * 
130:             * This method can be used to report additional non-essential
131:             * messages. The implementation usually discards them
132:             * unless some specific debug option is turned on.
133:             */
134:            public abstract void info(SAXParseException exception) /*REVISIT:throws AbortException*/;
135:
136:            /**
137:             * Reports a debug message to users.
138:             * 
139:             * @see #info(SAXParseException)
140:             */
141:            public final void debug(String msg) {
142:                info(new SAXParseException(msg, null));
143:            }
144:
145:            //
146:            //
147:            // convenience methods for derived classes
148:            //
149:            //
150:
151:            /**
152:             * Returns the human readable string representation of the 
153:             * {@link org.xml.sax.Locator} part of the specified
154:             * {@link SAXParseException}.
155:             * 
156:             * @return  non-null valid object.
157:             */
158:            protected final String getLocationString(SAXParseException e) {
159:                if (e.getLineNumber() != -1 || e.getSystemId() != null) {
160:                    int line = e.getLineNumber();
161:                    return Messages.format(Messages.LINE_X_OF_Y,
162:                            line == -1 ? "?" : Integer.toString(line),
163:                            getShortName(e.getSystemId()));
164:                } else {
165:                    return Messages.format(Messages.UNKNOWN_LOCATION);
166:                }
167:            }
168:
169:            /** Computes a short name of a given URL for display. */
170:            private String getShortName(String url) {
171:                if (url == null)
172:                    return Messages.format(Messages.UNKNOWN_FILE);
173:
174:                // sometimes the user deals with a set of schems that reference each other
175:                // in a complicated way, and end up importing two versions of the same schema.
176:                // just printing the file name makes it very difficult to recognize of this problem.
177:                // so I decided to change it back to print the full URL.
178:
179:                //      int idx;
180:                //
181:                //      // system Id can be URL, so we can't use File.separator
182:                //      idx = url.lastIndexOf('/');
183:                //      if(idx!=-1)     return url.substring(idx+1);
184:                //      idx = url.lastIndexOf('\\');
185:                //      if(idx!=-1)     return url.substring(idx+1);
186:
187:                return url;
188:            }
189:        }
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