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Posted to cvs@cocoon.apache.org by sy...@apache.org on 2005/08/13 00:14:53 UTC

svn commit: r232400 [2/2] - in /cocoon/branches/BRANCH_2_1_X/src: java/org/apache/cocoon/ java/org/apache/cocoon/components/flow/javascript/ java/org/apache/cocoon/components/pipeline/ java/org/apache/cocoon/components/treeprocessor/ java/org/apache/co...

Modified: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/ExceptionUtils.java
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/ExceptionUtils.java?rev=232400&r1=232399&r2=232400&view=diff
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/ExceptionUtils.java (original)
+++ cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/ExceptionUtils.java Fri Aug 12 15:14:26 2005
@@ -15,15 +15,14 @@
  */
 package org.apache.cocoon.util;
 
-import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
-import java.util.Vector;
 
 import javax.xml.transform.SourceLocator;
 import javax.xml.transform.TransformerException;
 
 import org.apache.cocoon.util.location.Locatable;
 import org.apache.cocoon.util.location.Location;
+import org.apache.cocoon.util.location.LocationImpl;
 import org.mozilla.javascript.EcmaError;
 import org.mozilla.javascript.JavaScriptException;
 import org.xml.sax.SAXParseException;
@@ -34,6 +33,7 @@
  * to handle exception chains, with additional heuristics to unroll exceptions, and other Cocoon-specific stuff
  * such as getting the {@link Location} of an exception.
  * 
+ * @since 2.1.8
  * @version $Id$
  */
 public class ExceptionUtils extends org.apache.commons.lang.exception.ExceptionUtils {
@@ -115,7 +115,7 @@
         } else if (thr instanceof SAXParseException) {
             SAXParseException spe = (SAXParseException)thr;
             if (spe.getSystemId() != null) {
-                return new Location(spe.getSystemId(), spe.getLineNumber(), spe.getColumnNumber());
+                return new LocationImpl(null, spe.getSystemId(), spe.getLineNumber(), spe.getColumnNumber());
             } else {
                 return null;
             }
@@ -124,7 +124,7 @@
             TransformerException ex = (TransformerException)thr;
             SourceLocator locator = ex.getLocator();
             if (locator != null && locator.getSystemId() != null) {
-                return new Location(locator.getSystemId(), locator.getLineNumber(), locator.getColumnNumber());
+                return new LocationImpl(null, locator.getSystemId(), locator.getLineNumber(), locator.getColumnNumber());
             } else {
                 return null;
             }
@@ -132,7 +132,7 @@
         } else if (thr instanceof EcmaError) {
             EcmaError ex = (EcmaError)thr;
             if (ex.getSourceName() != null) {
-                return new Location(ex.getSourceName(), ex.getLineNumber(), ex.getColumnNumber());
+                return new LocationImpl(ex.getName(), ex.getSourceName(), ex.getLineNumber(), ex.getColumnNumber());
             } else {
                 return null;
             }
@@ -140,14 +140,7 @@
         } else if (thr instanceof JavaScriptException) {
             JavaScriptException ex = (JavaScriptException)thr;
             if (ex.sourceName() != null) {
-                return new Location(ex.sourceName(), ex.lineNumber(), -1);
-//            Vector stackTrace = ex.getJSStackTrace();
-//            if (stackTrace != null) {
-//                // see JavaScriptException.getMessage()
-//                int i = stackTrace.size() - 1;
-//                String sourceName = (String)stackTrace.elementAt(i-2);
-//                int lineNum = ((Integer)stackTrace.elementAt(i)).intValue();
-//                return new Location(sourceName, lineNum, -1);
+                return new LocationImpl(null, ex.sourceName(), ex.lineNumber(), -1);
             } else {
                 return null;
             }

Modified: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/Locatable.java
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/Locatable.java?rev=232400&r1=232399&r2=232400&view=diff
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/Locatable.java (original)
+++ cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/Locatable.java Fri Aug 12 15:14:26 2005
@@ -19,6 +19,7 @@
  * A interface that should be implemented by objects knowning their location (i.e. where they
  * have been created from).
  * 
+ * @since 2.1.8
  * @version $Id$
  */
 public interface Locatable {

Modified: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatableException.java
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatableException.java?rev=232400&r1=232399&r2=232400&view=diff
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatableException.java (original)
+++ cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatableException.java Fri Aug 12 15:14:26 2005
@@ -22,10 +22,12 @@
  * a {@link Locatable} exception should return a concatenation of the raw message (given in the
  * constructor) and the exception's location, e.g. "<code>foo failed (file.xml:12:3)</code>". However,
  * {@link Locatable}-aware classes will want to handle the raw message (i.e. "<code>foo failed</code>")
- * and location separately.
+ * and location separately. This interface gives access to the raw message.
  * <p>
- * This interface gives access to the raw message.
+ * <strong>Note:</strong> care should be taken for locatable exceptions to use only immutable and
+ * serializable implementations of {@link Location} ({@see org.apache.cocoon.util.location.LocationImpl#get(Location)}).
  * 
+ * @since 2.1.8
  * @version $Id$
  */
 public interface LocatableException extends Locatable {

Modified: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatedException.java
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatedException.java?rev=232400&r1=232399&r2=232400&view=diff
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatedException.java (original)
+++ cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatedException.java Fri Aug 12 15:14:26 2005
@@ -16,6 +16,7 @@
 package org.apache.cocoon.util.location;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 import org.apache.avalon.framework.CascadingException;
@@ -24,6 +25,7 @@
  * A cascading and located <code>Exception</code>. It is also {@link MultiLocatable} to easily build
  * stack traces.
  * 
+ * @since 2.1.8
  * @version $Id$
  */
 public class LocatedException extends CascadingException implements LocatableException, MultiLocatable {
@@ -53,7 +55,7 @@
     }
 
     public List getLocations() {
-        return locations;
+        return locations == null ? Collections.EMPTY_LIST : locations;
     }
 
     public String getRawMessage() {
@@ -93,6 +95,6 @@
         if (locations == null) {
             this.locations = new ArrayList(1); // Start small
         }
-        locations.add(loc);
+        locations.add(LocationImpl.get(loc));
     }
 }

Modified: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatedRuntimeException.java
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatedRuntimeException.java?rev=232400&r1=232399&r2=232400&view=diff
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatedRuntimeException.java (original)
+++ cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatedRuntimeException.java Fri Aug 12 15:14:26 2005
@@ -16,6 +16,7 @@
 package org.apache.cocoon.util.location;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 import org.apache.avalon.framework.CascadingRuntimeException;
@@ -24,6 +25,7 @@
  * A cascading and located <code>RuntimeException</code>. It is also {@link MultiLocatable} to easily build
  * stack traces.
  * 
+ * @since 2.1.8
  * @version $Id$
  */
 public class LocatedRuntimeException extends CascadingRuntimeException implements LocatableException, MultiLocatable {
@@ -53,7 +55,7 @@
     }
 
     public List getLocations() {
-        return locations;
+        return locations == null ? Collections.EMPTY_LIST : locations;
     }
 
     public String getRawMessage() {
@@ -71,21 +73,28 @@
         if (locations == null) {
             this.locations = new ArrayList(1); // Start small
         }
-        locations.add(loc);
+        locations.add(LocationImpl.get(loc));
     }
 
     /**
-     * A convenience method to get a located exception for an existing <code>Throwable</code>.
-     * If the throwable already is {@link MultiLocatable}, the location is added to its location
-     * list. Otherwise, a new <code>LocatedRuntimeException</code> is created.
+     * Build a located exception given an existing exception and the location where
+     * this exception was catched. If the exception is already a <code>LocatedRuntimeException</code>,
+     * then the location is added to the original exception's location chain and the result is
+     * the original exception (and <code>description</code> is ignored. Otherwise, a new
+     * <code>LocatedRuntimeException</code> is built, wrapping the original exception.
+     * 
+     * @param message a message (can be <code>null</code>)
+     * @param thr the original exception (can be <code>null</code>)
+     * @param location the location (can be <code>null</code>)
+     * @return a located exception
      */
-    public static LocatedRuntimeException getLocatedException(String description, Throwable thr, Location location) {
+    public static LocatedRuntimeException getLocatedException(String message, Throwable thr, Location location) {
         if (thr instanceof LocatedRuntimeException) {
             LocatedRuntimeException re = (LocatedRuntimeException)thr;
             re.addLocation(location);
             return re;
         }
         
-        return new LocatedRuntimeException(description, thr, location);
+        return new LocatedRuntimeException(message, thr, location);
     }
 }

Modified: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/Location.java
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/Location.java?rev=232400&r1=232399&r2=232400&view=diff
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/Location.java (original)
+++ cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/Location.java Fri Aug 12 15:14:26 2005
@@ -15,154 +15,48 @@
  */
 package org.apache.cocoon.util.location;
 
-import java.io.Serializable;
 
 /**
  * A location in a resource. The location is composed of the URI of the resource, and 
- * the line and column numbers within that resource (when available).
+ * the line and column numbers within that resource (when available), along with a description.
  * <p>
- * Locations are mostly used by {@link Locatable}s objects.
+ * Locations are mostly provided by {@link Locatable}s objects.
  * 
+ * @since 2.1.8
  * @version $Id$
  */
-public class Location implements Serializable {
-    private final String uri;
-    private final int line;
-    private final int column;
-    private transient String stringValue;
+public interface Location {
     
     /**
      * Constant for unknown locations.
      */
-    public static final Location UNKNOWN = new Location();
+    public static final Location UNKNOWN = new LocationImpl(null, null);
     
     /**
-     * The string representation of an {@link #UNKNOWN unknown location}: "<code>[unknown location]</code>".
-     */
-    public static final String UNKNOWN_STRING = "[unknown location]";
-
-    private Location() {
-        // Null location
-        uri = "";
-        line = -1;
-        column = -1;
-        stringValue = UNKNOWN_STRING;
-    }
-    
-    /**
-     * Build a location for a given URI, with unknown line and column numbers.
-     * 
-     * @param uri the resource URI
-     */
-    public Location(String uri) {
-        this(uri, -1, -1);
-    }
-
-    /**
-     * Build a location for a given URI and line and columb numbers.
+     * Get the description of this location
      * 
-     * @param uri the resource URI
-     * @param line the line number (starts at 1)
-     * @param column the column number (starts at 1)
+     * @return the description (can be <code>null</code>)
      */
-    public Location(String uri, int line, int column) {
-        this.uri = uri;
-        this.line = line;
-        this.column = column;
-    }
-    
-    /**
-     * Parse a location string of the form "<code><em>uri</em>:<em>line</em>:<em>column</em></code>" (e.g.
-     * "<code>path/to/file.xml:3:40</code>") to a Location object.
-     * 
-     * @param text the text to parse
-     * @return the location
-     */
-    public static Location parse(String text) throws Exception {
-        if (text == null || text.equals(UNKNOWN_STRING)) {
-            return UNKNOWN;
-        }
-
-        try {
-            int colSep = text.lastIndexOf(':');
-            if (colSep > -1) {
-                int column = Integer.parseInt(text.substring(colSep + 1));
-                
-                int lineSep = text.lastIndexOf(':', colSep - 1);
-                if (lineSep > -1) {
-                    int line = Integer.parseInt(text.substring(lineSep + 1, colSep));
-                    return new Location(text.substring(0, lineSep), line, column);
-                }
-            }
-        } catch(Exception e) {
-            // Ignore: we throw another one below
-        }
-        
-        throw new IllegalArgumentException("Invalid location string: " + text);
-    }
+    public String getDescription();
     
     /**
      * Get the URI of this location
      * 
-     * @return the URI (empty string if unknown).
+     * @return the URI (<code>null</code> if unknown).
      */
-    public String getURI() {
-        return this.uri;
-    }
-
+    public String getURI();
     /**
      * Get the line number of this location
      * 
      * @return the line number (<code>-1</code> if unknown)
      */
-    public int getLine() {
-        return this.line;
-    }
+    public int getLineNumber();
     
     /**
      * Get the column number of this location
      * 
      * @return the column number (<code>-1</code> if unknown)
      */
-    public int getColumn() {
-        return this.column;
-    }
-
-    public boolean equals(Object obj) {
-        if (obj == this) {
-            return true;
-        }
+    public int getColumnNumber();
 
-        if (obj instanceof Location) {
-            Location other = (Location)obj;
-            return this.line == other.line && other.column == other.column && this.uri.equals(other.uri);
-        }
-        
-        return false;
-    }
-    
-    public int hashCode() {
-        return uri.hashCode() ^ line ^ column;
-    }
-    
-    /**
-     * Builds a string representation of the location, in the "<code><em>uri</em>:<em>line</em>:<em>column</em></code>"
-     * format (e.g. "<code>path/to/file.xml:3:40</code>"). For {@link #UNKNOWN an unknown location}, returns
-     * {@link #UNKNOWN_STRING}.
-     * 
-     * @return the string representation
-     */
-    public String toString() {
-        if (stringValue == null) {
-            stringValue = uri + ":" + Integer.toString(line) + ":" + Integer.toString(column);
-        }
-        return stringValue;
-    }
-    
-    /**
-     * Ensure serialized unknown location resolve to {@link UNKNOWN}.
-     */
-    private Object readResolve() {
-        return this.equals(UNKNOWN) ? UNKNOWN : this;
-    }
 }

Modified: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocationAttributes.java
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocationAttributes.java?rev=232400&r1=232399&r2=232400&view=diff
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocationAttributes.java (original)
+++ cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocationAttributes.java Fri Aug 12 15:14:26 2005
@@ -26,6 +26,7 @@
  * These attributes are typically setup using {@link LocatorToAttributesPipe}
  * 
  * @see LocatorToAttributesPipe
+ * @since 2.1.8
  * @version $Id$
  */
 public class LocationAttributes {
@@ -81,29 +82,31 @@
      * Returns the {@link Location} pointed to by a SAX <code>Locator</code>.
      * 
      * @param locator the locator (can be null)
+     * @param description a description for the location (can be null)
      * @return the location
      */
-    public static Location getLocation(Locator locator) {
+    public static Location getLocation(Locator locator, String description) {
         if (locator == null || locator.getSystemId() == null) {
             return Location.UNKNOWN;
         }
         
-        return new Location(locator.getSystemId(), locator.getLineNumber(), locator.getColumnNumber());
+        return new LocationImpl(description, locator.getSystemId(), locator.getLineNumber(), locator.getColumnNumber());
     }
     
     /**
      * Returns the {@link Location} of an element (SAX flavor).
      * 
      * @param attrs the element's attributes that hold the location information
+     * @param description a description for the location (can be null)
      * @return a {@link Location} object
      */
-    public static Location getLocation(Attributes attrs) {
+    public static Location getLocation(Attributes attrs, String description) {
         String src = attrs.getValue(URI, SRC_ATTR);
         if (src == null) {
             return Location.UNKNOWN;
         }
         
-        return new Location(src, getLine(attrs), getColumn(attrs));
+        return new LocationImpl(description, src, getLine(attrs), getColumn(attrs));
     }
 
     /**
@@ -117,7 +120,7 @@
     public static String getLocationString(Attributes attrs) {
         String src = attrs.getValue(URI, SRC_ATTR);
         if (src == null) {
-            return Location.UNKNOWN_STRING;
+            return LocationImpl.UNKNOWN_STRING;
         }
         
         return src + ":" + attrs.getValue(URI, LINE_ATTR) + ":" + attrs.getValue(URI, COL_ATTR);
@@ -132,7 +135,7 @@
      */
     public static String getURI(Attributes attrs) {
         String src = attrs.getValue(URI, SRC_ATTR);
-        return src != null ? src : Location.UNKNOWN_STRING;
+        return src != null ? src : LocationImpl.UNKNOWN_STRING;
     }
     
     /**
@@ -163,16 +166,26 @@
      * Returns the {@link Location} of an element (DOM flavor).
      * 
      * @param attrs the element that holds the location information
+     * @param description a description for the location (if <code>null</code>, the element's name is used)
      * @return a {@link Location} object
      */
-    public static Location getLocation(Element elem) {
+    public static Location getLocation(Element elem, String description) {
         Attr srcAttr = elem.getAttributeNodeNS(URI, SRC_ATTR);
         if (srcAttr == null) {
             return Location.UNKNOWN;
         }
-        
-        return new Location(srcAttr.getValue(), getLine(elem), getColumn(elem));
+
+        return new LocationImpl(description == null ? elem.getNodeName() : description,
+                srcAttr.getValue(), getLine(elem), getColumn(elem));
+    }
+    
+    /**
+     * Same as <code>getLocation(elem, null)</code>.
+     */
+    public static Location getLocation(Element elem) {
+        return getLocation(elem, null);
     }
+   
 
     /**
      * Returns the location of an element that has been processed by this pipe (DOM flavor).
@@ -185,7 +198,7 @@
     public static String getLocationString(Element elem) {
         Attr srcAttr = elem.getAttributeNodeNS(URI, SRC_ATTR);
         if (srcAttr == null) {
-            return Location.UNKNOWN_STRING;
+            return LocationImpl.UNKNOWN_STRING;
         }
         
         return srcAttr.getValue() + ":" + elem.getAttributeNS(URI, LINE_ATTR) + ":" + elem.getAttributeNS(URI, COL_ATTR);
@@ -200,7 +213,7 @@
      */
     public static String getURI(Element elem) {
         Attr attr = elem.getAttributeNodeNS(URI, SRC_ATTR);
-        return attr != null ? attr.getValue() : Location.UNKNOWN_STRING;
+        return attr != null ? attr.getValue() : LocationImpl.UNKNOWN_STRING;
     }
 
     /**

Added: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocationImpl.java
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocationImpl.java?rev=232400&view=auto
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocationImpl.java (added)
+++ cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocationImpl.java Fri Aug 12 15:14:26 2005
@@ -0,0 +1,242 @@
+/*
+ * Copyright 2005 The Apache Software Foundation.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.cocoon.util.location;
+
+import java.io.Serializable;
+
+import org.apache.commons.lang.ObjectUtils;
+
+/**
+ * A simple immutable and serializable implementation of {@link Location}.
+ * 
+ * @since 2.1.8
+ * @version $Id$
+ */
+public class LocationImpl implements Location, Serializable {
+    private final String uri;
+    private final int line;
+    private final int column;
+    private final String description;
+
+    /**
+     * The string representation of an unknown location: "<code>[unknown location]</code>".
+     */
+    public static final String UNKNOWN_STRING = "[unknown location]";
+
+    /**
+     * Build a location for a given URI, with unknown line and column numbers.
+     * 
+     * @param uri the resource URI
+     */
+    public LocationImpl(String description, String uri) {
+        this(description, uri, -1, -1);
+    }
+
+    /**
+     * Build a location for a given URI and line and columb numbers.
+     * 
+     * @param uri the resource URI
+     * @param line the line number (starts at 1)
+     * @param column the column number (starts at 1)
+     */
+    public LocationImpl(String description, String uri, int line, int column) {
+        if (uri == null || uri.length() == 0) {
+            this.uri = null;
+            this.line = -1;
+            this.column = -1;
+        } else {
+            this.uri = uri;
+            this.line = line;
+            this.column = column;
+        }
+        
+        if (description != null && description.length() == 0) {
+            description = null;
+        }
+        this.description = description;
+    }
+    
+    /**
+     * Copy constructor.
+     * 
+     * @param location the location to be copied
+     */
+    public LocationImpl(Location location) {
+        this(location.getDescription(), location.getURI(), location.getLineNumber(), location.getColumnNumber());
+    }
+    
+    /**
+     * Obtain a <code>LocationImpl</code> from a {@link Location}. If <code>location</code> is
+     * alredy a <code>LocationImpl</code>, it is returned, otherwise it is copied.
+     * <p>
+     * This method is useful when an immutable and serializable location is needed, such as in locatable
+     * exceptions.
+     * 
+     * @param location the location
+     * @return an immutable and serializable version of <code>location</code>
+     */
+    public static LocationImpl get(Location location) {
+        if (location instanceof LocationImpl) {
+            return (LocationImpl)location;
+        } else if (location == null) {
+            return (LocationImpl)Location.UNKNOWN;
+        } else {
+            return new LocationImpl(location);
+        }
+    }
+
+    /**
+     * Parse a location string of the form "<code><em>uri</em>:<em>line</em>:<em>column</em></code>" (e.g.
+     * "<code>path/to/file.xml:3:40</code>") to a Location object.
+     * 
+     * @param text the text to parse
+     * @return the location
+     */
+    public static LocationImpl valueOf(String text) {
+        if (text == null || text.length() == 0) {
+            return (LocationImpl)Location.UNKNOWN;
+        }
+
+        // Do we have a description?
+        String description;
+        int uriStart = text.lastIndexOf(" - "); // lastIndexOf to allow the separator to be in the description
+        if (uriStart > -1) {
+            description = text.substring(0, uriStart);
+            uriStart += 3; // strip " - "
+        } else {
+            description = null;
+            uriStart = 0;
+        }
+        
+        try {
+            int colSep = text.lastIndexOf(':');
+            if (colSep > -1) {
+                int column = Integer.parseInt(text.substring(colSep + 1));
+                
+                int lineSep = text.lastIndexOf(':', colSep - 1);
+                if (lineSep > -1) {
+                    int line = Integer.parseInt(text.substring(lineSep + 1, colSep));
+                    return new LocationImpl(description, text.substring(uriStart, lineSep), line, column);
+                }
+            } else {
+                // unkonwn?
+                if (text.endsWith(UNKNOWN_STRING)) {
+                    return new LocationImpl(description, null);
+                }
+            }
+        } catch(Exception e) {
+            // Ignore: we throw another one below
+        }
+        
+        throw new IllegalArgumentException("Invalid location string: " + text);
+    }
+
+    /**
+     * Get the description of this location
+     * 
+     * @return the description (can be <code>null</code>)
+     */
+    public String getDescription() {
+        return this.description;
+    }
+    
+    /**
+     * Get the URI of this location
+     * 
+     * @return the URI (<code>null</code> if unknown).
+     */
+    public String getURI() {
+        return this.uri;
+    }
+
+    /**
+     * Get the line number of this location
+     * 
+     * @return the line number (<code>-1</code> if unknown)
+     */
+    public int getLineNumber() {
+        return this.line;
+    }
+    
+    /**
+     * Get the column number of this location
+     * 
+     * @return the column number (<code>-1</code> if unknown)
+     */
+    public int getColumnNumber() {
+        return this.column;
+    }
+
+    public boolean equals(Object obj) {
+        if (obj == this) {
+            return true;
+        }
+
+        if (obj instanceof Location) {
+            Location other = (Location)obj;
+            return this.line == other.getLineNumber() && this.column == other.getColumnNumber()
+                   && ObjectUtils.equals(this.uri, other.getURI())
+                   && ObjectUtils.equals(this.description, other.getDescription());
+        }
+        
+        return false;
+    }
+    
+    public int hashCode() {
+        int hash = line ^ column;
+        if (uri != null) hash ^= uri.hashCode();
+        if (description != null) hash ^= description.hashCode();
+        
+        return hash;
+    }
+    
+    public String toString() {
+        return toString(this);
+    }
+    
+    /**
+     * Builds a string representation of a location, in the
+     * "<code><em>descripton</em> - <em>uri</em>:<em>line</em>:<em>column</em></code>"
+     * format (e.g. "<code>path/to/file.xml:3:40</code>"). For {@link Location#UNKNOWN an unknown location}, returns
+     * {@link #UNKNOWN_STRING}.
+     * 
+     * @return the string representation
+     */
+    public static String toString(Location location) {
+        StringBuffer result = new StringBuffer();
+
+        String description = location.getDescription();
+        if (description != null) {
+            result.append(description).append(" - ");
+        }
+
+        String uri = location.getURI();
+        if (uri != null) {
+            result.append(uri).append(':').append(location.getLineNumber()).append(':').append(location.getColumnNumber());
+        } else {
+            result.append(UNKNOWN_STRING);
+        }
+        
+        return result.toString();
+    }
+    
+    /**
+     * Ensure serialized unknown location resolve to {@link Location#UNKNOWN}.
+     */
+    private Object readResolve() {
+        return this.equals(Location.UNKNOWN) ? Location.UNKNOWN : this;
+    }
+}

Propchange: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocationImpl.java
------------------------------------------------------------------------------
    svn:eol-style = native

Propchange: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocationImpl.java
------------------------------------------------------------------------------
    svn:keywords = Id

Modified: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatorToAttributesPipe.java
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatorToAttributesPipe.java?rev=232400&r1=232399&r2=232400&view=diff
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatorToAttributesPipe.java (original)
+++ cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/LocatorToAttributesPipe.java Fri Aug 12 15:14:26 2005
@@ -39,6 +39,7 @@
  * attributes point to the same string.
  * 
  * @see org.apache.cocoon.util.location.LocationAttributes
+ * @since 2.1.8
  * @version $Id$
  */
 public class LocatorToAttributesPipe extends AbstractXMLPipe {

Modified: cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/MultiLocatable.java
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/MultiLocatable.java?rev=232400&r1=232399&r2=232400&view=diff
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/MultiLocatable.java (original)
+++ cocoon/branches/BRANCH_2_1_X/src/java/org/apache/cocoon/util/location/MultiLocatable.java Fri Aug 12 15:14:26 2005
@@ -13,6 +13,7 @@
  * location of this stack. This is consistent with the need for <code>getLocation()</code> to
  * return the most precise location.
  * 
+ * @since 2.1.8
  * @version $Id$
  */
 public interface MultiLocatable extends Locatable {
@@ -20,8 +21,19 @@
     /**
      * Return the list of locations.
      * 
-     * @return a list of locations, or <code>null</code> if there are no locations.
+     * @return a list of locations, possibly empty but never null.
      */
     public List getLocations();
+    
+    /**
+     * Add a location to the current list of locations.
+     * <p>
+     * Implementations are free to filter locations that can be added (e.g. {@link Location#UNKNOWN}),
+     * and there is therefore no guarantee that the given location will actually be added to the list.
+     * Filtered locations are silently ignored.
+     * 
+     * @param location the location to be added.
+     */
+    public void addLocation(Location location);
 
 }

Modified: cocoon/branches/BRANCH_2_1_X/src/webapp/stylesheets/system/exception2html.xslt
URL: http://svn.apache.org/viewcvs/cocoon/branches/BRANCH_2_1_X/src/webapp/stylesheets/system/exception2html.xslt?rev=232400&r1=232399&r2=232400&view=diff
==============================================================================
--- cocoon/branches/BRANCH_2_1_X/src/webapp/stylesheets/system/exception2html.xslt (original)
+++ cocoon/branches/BRANCH_2_1_X/src/webapp/stylesheets/system/exception2html.xslt Fri Aug 12 15:14:26 2005
@@ -29,7 +29,7 @@
   <!-- let sitemap override default page title -->
   <xsl:param name="pageTitle">An error has occured</xsl:param>
 
-  <xsl:template match="ex:exception">
+  <xsl:template match="ex:exception-report">
     <html>
       <head>
         <title>
@@ -42,6 +42,9 @@
           p.description { padding: 10px 30px 20px 30px; border-width: 0px 0px 1px 0px; border-style: solid; border-color: #336699;}
           p.topped { padding-top: 10px; border-width: 1px 0px 0px 0px; border-style: solid; border-color: #336699; }
           pre { font-size: 120%; }
+          .row-1 { background-color: #F0F0F0;}
+          table { border-collapse: collapse; margin-top: 0.3em; }
+          td { padding: 0.1em; }
         </style>
         <script src="{$contextPath}/scripts/main.js" type="text/javascript"/>
       </head>
@@ -60,22 +63,37 @@
                 <xsl:value-of select="."/>
              </xsl:if>
           </xsl:for-each>
-          <xsl:if test="@uri">
-             <br/><span style="font-weight: normal"><xsl:call-template name="dump-location"/></span>
+          <xsl:if test="ex:location">
+             <br/><span style="font-weight: normal"><xsl:apply-templates select="ex:location"/></span>
           </xsl:if>
         </p>
 
-        <xsl:if test="count(ex:locations/*)">
-          <p><span class="description">Cocoon stacktrace</span>
-             <span class="switch" id="locations-switch" onclick="toggle('locations')">[hide]</span>
-          </p>
-          <div id="locations">
-            <xsl:for-each select="ex:locations/*">
-              <xsl:sort select="position()" order="descending"/>
-              <xsl:apply-templates select="."/>
-            </xsl:for-each>
-          </div>
-        </xsl:if>
+        <p><span class="description">Cocoon stacktrace</span>
+           <span class="switch" id="locations-switch" onclick="toggle('locations')">[hide]</span>
+        </p>
+        <div id="locations">
+          <xsl:for-each select="ex:cocoon-stacktrace/ex:exception">
+            <strong>
+               <xsl:for-each select="str:split(ex:message, '&#10;')">
+                  <xsl:if test="normalize-space(.)">
+                     <xsl:value-of select="."/>
+                     <br/>
+                  </xsl:if>
+               </xsl:for-each>
+            </strong>
+            <table>
+              <xsl:for-each select="ex:locations/*">
+                <!--xsl:sort select="position()" order="descending"/-->
+                <tr class="row-{position() mod 2}">
+                   <td><xsl:call-template name="print-location"/></td>
+                   <td><em><xsl:value-of select="."/></em></td>
+                </tr>
+                <!--xsl:apply-templates select="."/><br/-->
+              </xsl:for-each>
+            </table>
+            <br/>
+           </xsl:for-each>
+        </div>
 
         <xsl:apply-templates select="ex:stacktrace"/>
         <xsl:apply-templates select="ex:full-stacktrace"/>
@@ -130,37 +148,7 @@
       </body>
     </html>
   </xsl:template>
-
-  <xsl:template match="ex:location">
-       <p>
-          <strong>
-             <xsl:for-each select="str:split(., '&#10;')">
-                <xsl:if test="normalize-space(.)">
-                  <xsl:value-of select="."/>
-                </xsl:if>
-             </xsl:for-each>
-          </strong>
-          <br/>
-          <xsl:call-template name="dump-location"/>
-       </p>
-  </xsl:template>
   
-  <xsl:template match="ex:location-list">
-     <p>
-        <strong>
-           <xsl:for-each select="str:split(ex:description, '&#10;')">
-              <xsl:if test="normalize-space(.)">
-                <xsl:value-of select="."/>
-              </xsl:if>
-           </xsl:for-each>
-        </strong>
-        <xsl:for-each select="ex:location">
-           <br/>
-           <xsl:call-template name="dump-location"/>
-         </xsl:for-each>
-     </p>
-  </xsl:template>
-
   <xsl:template match="ex:stacktrace|ex:full-stacktrace">
       <p class="stacktrace">
        <span class="description">Java <xsl:value-of select="translate(local-name(), '-', ' ')"/></span>
@@ -171,18 +159,26 @@
       </p>
   </xsl:template>
   
-  <xsl:template name="dump-location">
-   <xsl:choose>
-     <xsl:when test="contains(@uri, $realPath)">
-       <xsl:text>context:/</xsl:text>
-       <xsl:value-of select="substring-after(@uri, $realPath)"/>
-     </xsl:when>
-     <xsl:otherwise>
-       <xsl:value-of select="@uri"/>
-     </xsl:otherwise>
-    </xsl:choose>
-    <xsl:text> - </xsl:text>
-    <xsl:value-of select="@line"/>:<xsl:value-of select="@column"/>
+  <xsl:template match="ex:location">
+   <xsl:if test="string-length(.) > 0">
+     <em><xsl:value-of select="."/></em>
+     <xsl:text> - </xsl:text>
+   </xsl:if>
+   <xsl:call-template name="print-location"/>
+  </xsl:template>
+  
+  <xsl:template name="print-location">
+     <xsl:choose>
+       <xsl:when test="contains(@uri, $realPath)">
+         <xsl:text>context:/</xsl:text>
+         <xsl:value-of select="substring-after(@uri, $realPath)"/>
+       </xsl:when>
+       <xsl:otherwise>
+         <xsl:value-of select="@uri"/>
+       </xsl:otherwise>
+      </xsl:choose>
+      <xsl:text> - </xsl:text>
+      <xsl:value-of select="@line"/>:<xsl:value-of select="@column"/>
   </xsl:template>
 
 </xsl:stylesheet>