[jboss-cvs] jboss-seam/examples/wiki/src/main/org/jboss/seam/wiki/core/nestedset/ui ...

[Christian Bauer]

  User: cbauer  
  Date: 07/12/18 23:29:21

  Added:       examples/wiki/src/main/org/jboss/seam/wiki/core/nestedset/ui 
                        NestedSetNodeWrapperEntityConverter.java
  Log:
  Major rewrite of the most of the application
  
  Revision  Changes    Path
  1.1      date: 2007/12/19 04:29:21;  author: cbauer;  state: Exp;jboss-seam/examples/wiki/src/main/org/jboss/seam/wiki/core/nestedset/ui/NestedSetNodeWrapperEntityConverter.java
  
  Index: NestedSetNodeWrapperEntityConverter.java
  ===================================================================
  package org.jboss.seam.wiki.core.nestedset.ui;
  
  import org.jboss.seam.annotations.Name;
  import org.jboss.seam.ui.converter.EntityConverter;
  import org.jboss.seam.wiki.core.nestedset.query.NestedSetNodeWrapper;
  import org.jboss.seam.wiki.core.nestedset.NestedSetNode;
  
  import javax.faces.context.FacesContext;
  import javax.faces.component.UIComponent;
  import javax.faces.convert.ConverterException;
  
  /**
   * Unwraps a wrapped Nested Set node and stores its identifier in the page context.
   * <p>
   * Because some clown in the JSF EG decided that a converter needs to return an instance
   * from <tt>getAsObject()</tt> that is <tt>equal()</tt> to one of the instances in the
   * <tt>SelectItem</tt>s list, we now need to override <tt>equals()</tt> in
   * <tt>NestedSetNodeWrapper</tt> to trick it. No, this check does not add security, it just
   * makes JSF less flexible.
   *
   * @author Christian Bauer
   */
  @Name("nestedSetNodeWrapperEntityConverter")
  public class NestedSetNodeWrapperEntityConverter extends EntityConverter {
  
      public String getAsString(FacesContext facesContext, UIComponent uiComponent, Object o) throws ConverterException {
          String result;
          if (o instanceof NestedSetNodeWrapper) {
              result = super.getAsString(facesContext, uiComponent, ((NestedSetNodeWrapper)o).getWrappedNode());
              return result;
          } else {
              throw new IllegalArgumentException("Can not convert: " + o);
          }
      }
  
      public Object getAsObject(FacesContext facesContext, UIComponent uiComponent, String s) throws ConverterException {
          Object o = super.getAsObject(facesContext, uiComponent, s);
          return new NestedSetNodeWrapper( (NestedSetNode)o );
      }
  }