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1: /* TransformerException.java -- 2: Copyright (C) 2004, 2005 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: package javax.xml.transform; 39: 40: import gnu.java.lang.CPStringBuilder; 41: 42: import java.io.PrintStream; 43: import java.io.PrintWriter; 44: 45: /** 46: * An exception occurred during the transformation process. 47: * 48: * @author (a href='mailto:dog@gnu.org'>Chris Burdess</a) 49: */ 50: public class TransformerException 51: extends Exception 52: { 53: private static final long serialVersionUID = 975798773772956428L; 54: 55: // Field names fixed by serialization spec. 56: private SourceLocator locator; 57: private Throwable containedException; 58: 59: /** 60: * Constructor with a detail message. 61: */ 62: public TransformerException(String msg) 63: { 64: this(msg, null, null); 65: } 66: 67: /** 68: * Constructor with an underlying cause. 69: */ 70: public TransformerException(Throwable cause) 71: { 72: this(cause.getMessage(), null, cause); 73: } 74: 75: /** 76: * Constructor with a detail message and underlying cause. 77: */ 78: public TransformerException(String msg, Throwable cause) 79: { 80: this(msg, null, cause); 81: } 82: 83: /** 84: * Constructor with a detail message and locator. 85: */ 86: public TransformerException(String msg, SourceLocator locator) 87: { 88: this(msg, locator, null); 89: } 90: 91: /** 92: * Constructor with detail message, locator and underlying cause. 93: */ 94: public TransformerException(String msg, SourceLocator locator, 95: Throwable cause) 96: { 97: super(msg); 98: this.locator = locator; 99: if (cause != null) 100: { 101: initCause(cause); 102: this.containedException = cause; 103: } 104: } 105: 106: /** 107: * Returns a locator indicating where the error occurred. 108: */ 109: public SourceLocator getLocator() 110: { 111: return locator; 112: } 113: 114: /** 115: * Sets the locator indicating where the error occurred. 116: */ 117: public void setLocator(SourceLocator location) 118: { 119: locator = location; 120: } 121: 122: /** 123: * Returns the underlying cause of this exception. 124: */ 125: public Throwable getException() 126: { 127: return containedException; 128: } 129: 130: /** 131: * Returns the underlying cause of this exception. 132: */ 133: public Throwable getCause() 134: { 135: return containedException; 136: } 137: 138: /** 139: * Initializes the root cause of this exception. 140: * This method may be called only once, and will be called by the 141: * constructor if a non-null cause is specified. 142: * Really phenomenally poor API design. 143: * @param cause the underlying cause 144: * @exception IllegalArgumentException if this exception is passed as the 145: * argument 146: * @exception IllegalStateException if a cause has already been 147: * initialized 148: */ 149: public Throwable initCause(Throwable cause) 150: { 151: if (this.containedException != null) 152: { 153: throw new IllegalStateException(); 154: } 155: if (cause == this) 156: { 157: throw new IllegalArgumentException(); 158: } 159: this.containedException = cause; 160: return this; 161: } 162: 163: /** 164: * Returns the exception message with location information appended. 165: */ 166: public String getMessageAndLocation() 167: { 168: return (locator == null) ? getMessage() : 169: getMessage() + ": " + getLocationAsString(); 170: } 171: 172: /** 173: * Returns the location information as a string. 174: */ 175: public String getLocationAsString() 176: { 177: if (locator == null) 178: { 179: return null; 180: } 181: String publicId = locator.getPublicId(); 182: String systemId = locator.getSystemId(); 183: int lineNumber = locator.getLineNumber(); 184: int columnNumber = locator.getColumnNumber(); 185: CPStringBuilder buffer = new CPStringBuilder (); 186: if (publicId != null) 187: { 188: buffer.append ("publicId="); 189: buffer.append (publicId); 190: } 191: if (systemId != null) 192: { 193: if (buffer.length() > 0) 194: { 195: buffer.append(' '); 196: } 197: buffer.append ("systemId="); 198: buffer.append (systemId); 199: } 200: if (lineNumber != -1) 201: { 202: if (buffer.length() > 0) 203: { 204: buffer.append(' '); 205: } 206: buffer.append ("lineNumber="); 207: buffer.append (lineNumber); 208: } 209: if (columnNumber != -1) 210: { 211: if (buffer.length() > 0) 212: { 213: buffer.append(' '); 214: } 215: buffer.append ("columnNumber="); 216: buffer.append (columnNumber); 217: } 218: return buffer.toString(); 219: } 220: 221: public void printStackTrace() 222: { 223: printStackTrace(System.out); 224: } 225: 226: public void printStackTrace(PrintStream s) 227: { 228: super.printStackTrace(s); 229: if (containedException != null) 230: { 231: s.print("caused by "); 232: containedException.printStackTrace(s); 233: } 234: } 235: 236: public void printStackTrace(PrintWriter s) 237: { 238: super.printStackTrace(s); 239: if (containedException != null) 240: { 241: s.print("caused by "); 242: containedException.printStackTrace(s); 243: } 244: } 245: 246: }
GNU Classpath (0.98) |