[jboss-cvs] jboss-seam/src/main/org/jboss/seam/core ...

[Gavin King]

  User: gavin   
  Date: 06/10/22 06:57:30

  Modified:    src/main/org/jboss/seam/core  Exceptions.java
  Log:
  exceptions.xml
  
  Revision  Changes    Path
  1.2       +102 -1    jboss-seam/src/main/org/jboss/seam/core/Exceptions.java
  
  (In the diff below, changes in quantity of whitespace are not shown.)
  
  Index: Exceptions.java
  ===================================================================
  RCS file: /cvsroot/jboss/jboss-seam/src/main/org/jboss/seam/core/Exceptions.java,v
  retrieving revision 1.1
  retrieving revision 1.2
  diff -u -b -r1.1 -r1.2
  --- Exceptions.java	22 Oct 2006 01:47:11 -0000	1.1
  +++ Exceptions.java	22 Oct 2006 10:57:30 -0000	1.2
  @@ -2,6 +2,7 @@
   
   import static org.jboss.seam.InterceptionType.NEVER;
   
  +import java.io.InputStream;
   import java.util.ArrayList;
   import java.util.List;
   
  @@ -11,6 +12,9 @@
   
   import org.apache.commons.logging.Log;
   import org.apache.commons.logging.LogFactory;
  +import org.dom4j.Document;
  +import org.dom4j.Element;
  +import org.dom4j.io.SAXReader;
   import org.jboss.seam.Component;
   import org.jboss.seam.ScopeType;
   import org.jboss.seam.annotations.Create;
  @@ -24,6 +28,8 @@
   import org.jboss.seam.contexts.Lifecycle;
   import org.jboss.seam.interceptors.ExceptionInterceptor;
   import org.jboss.seam.jsf.AbstractSeamPhaseListener;
  +import org.jboss.seam.util.Reflections;
  +import org.jboss.seam.util.Resources;
   
   /**
    * Holds metadata for pages defined in pages.xml, including
  @@ -54,8 +60,103 @@
      }
      
      @Create
  -   public void init()
  +   public void initialize() throws Exception 
      {
  +      InputStream stream = Resources.getResourceAsStream("/WEB-INF/exceptions.xml");      
  +      if (stream==null)
  +      {
  +         log.info("no exceptions.xml file found");
  +      }
  +      else
  +      {
  +         log.info("reading exceptions.xml");
  +         SAXReader saxReader = new SAXReader();
  +         saxReader.setMergeAdjacentText(true);
  +         Document doc = saxReader.read(stream);
  +         List<Element> elements = doc.getRootElement().elements("exception");
  +         for (Element exception: elements)
  +         {
  +            String className = exception.attributeValue("class");
  +            if (className==null)
  +            {
  +               throw new IllegalArgumentException("must specify a value for class in <exception/> declaration");
  +            }
  +            final Class clazz = Reflections.classForName(className);
  +            Element render = exception.element("render");
  +            if (render!=null)
  +            {
  +               final String viewId = render.attributeValue("view-id");
  +               final String message = render.getTextTrim();
  +               exceptionHandlers.add( new RenderHandler()
  +               {
  +                  @Override
  +                  protected String getMessage(Exception e)
  +                  {
  +                     return message;
  +                  }
  +                  @Override
  +                  protected String getViewId(Exception e)
  +                  {
  +                     return viewId;
  +                  }
  +                  @Override
  +                  public boolean isHandler(Exception e)
  +                  {
  +                     return clazz.isInstance(e);
  +                  }
  +               } );
  +            }
  +            Element redirect = exception.element("redirect");
  +            if (redirect!=null)
  +            {
  +               final String viewId = redirect.attributeValue("view-id");
  +               final String message = redirect.getTextTrim();
  +               exceptionHandlers.add( new RedirectHandler()
  +               {
  +                  @Override
  +                  protected String getMessage(Exception e)
  +                  {
  +                     return message;
  +                  }
  +                  @Override
  +                  protected String getViewId(Exception e)
  +                  {
  +                     return viewId;
  +                  }
  +                  @Override
  +                  public boolean isHandler(Exception e)
  +                  {
  +                     return clazz.isInstance(e);
  +                  }
  +               } );
  +            }
  +            Element error = exception.element("http-error");
  +            if (error!=null)
  +            {
  +               final int code = Integer.parseInt( error.attributeValue("view-id") );
  +               final String message = error.getTextTrim();
  +               exceptionHandlers.add( new ErrorHandler()
  +               {
  +                  @Override
  +                  protected String getMessage(Exception e)
  +                  {
  +                     return message;
  +                  }
  +                  @Override
  +                  protected int getCode(Exception e)
  +                  {
  +                     return code;
  +                  }
  +                  @Override
  +                  public boolean isHandler(Exception e)
  +                  {
  +                     return clazz.isInstance(e);
  +                  }
  +               } );
  +            }
  +         }
  +      }
  +      
         exceptionHandlers.add( new RenderHandler() );
         exceptionHandlers.add( new RedirectHandler() );
         exceptionHandlers.add( new ErrorHandler() );