Le vendredi 09 novembre 2007 à 12:15 -0800, Nathan Bubna a écrit :
> - the hasSubKeys things doesn't make any sense to me

Maybe the name isn't appropriate. What I call "subkey" is "foo" or "bar"
in "foo.bar". Feel free to rename anything, English is not my mother
tongue...

> i'm also curious about what the advantages are of this approach (as
> opposed to a ValueParserSub).  it's been a while since i've thought
> through the implementation options for this.

Things have changed since then: the engine is now quite efficient in
automatic types conversions so the "foo.int" syntax is much less
necessary than "foo.bar", and you always have "foo.getInt()".

But above all, having the generic getter return something else (that is,
the ValueParserSub) than the underlying basic type leads - at least in
my experience - to several side effects (like a jdbc driver being unable
to handle the ValueParserSub class by calling toString on it).

The proposed implementation only returns a new ValueParser object
whenever subkeys are allowed and found.


  Claude

> On Nov 9, 2007 7:15 AM, Claude Brisson <[EMAIL PROTECTED]> wrote:
> > ValueParser now has protected get/setAllowSubkeys() boolean methods.
> >
> > The default value of allowSubkey shoud be the value of deprecatedMode,
> > but I'm not really sure of how this should be done. But I'm sure Nathan
> > will be of some help here.
> >
> > Also, since ValueParser is used internally by the Tool.configure method,
> > it may be safer to move all this new stuff in ParameterParser only.
> >
> >    Claude
> >
> >
> > Le vendredi 09 novembre 2007 à 14:49 +0000, [EMAIL PROTECTED] a
> > écrit :
> >
> > > Author: cbrisson
> > > Date: Fri Nov  9 06:49:36 2007
> > > New Revision: 593549
> > >
> > > URL: http://svn.apache.org/viewvc?rev=593549&view=rev
> > > Log:
> > > sub keys getter (not yet tested but doesnt break anything at least)
> > >
> > > Modified:
> > >     
> > > velocity/tools/branches/2.x/src/main/java/org/apache/velocity/tools/generic/ValueParser.java
> > >     
> > > velocity/tools/branches/2.x/src/main/java/org/apache/velocity/tools/view/ParameterTool.java
> > >
> > > Modified: 
> > > velocity/tools/branches/2.x/src/main/java/org/apache/velocity/tools/generic/ValueParser.java
> > > URL: 
> > > http://svn.apache.org/viewvc/velocity/tools/branches/2.x/src/main/java/org/apache/velocity/tools/generic/ValueParser.java?rev=593549&r1=593548&r2=593549&view=diff
> > > ==============================================================================
> > > --- 
> > > velocity/tools/branches/2.x/src/main/java/org/apache/velocity/tools/generic/ValueParser.java
> > >  (original)
> > > +++ 
> > > velocity/tools/branches/2.x/src/main/java/org/apache/velocity/tools/generic/ValueParser.java
> > >  Fri Nov  9 06:49:36 2007
> > > @@ -21,6 +21,9 @@
> > >
> > >  import java.util.Map;
> > >  import java.util.Locale;
> > > +import java.util.Set;
> > > +import java.util.HashMap;
> > > +
> > >  import org.apache.velocity.tools.config.DefaultKey;
> > >
> > >  /**
> > > @@ -40,6 +43,14 @@
> > >  {
> > >      private Map source = null;
> > >
> > > +    private boolean allowSubkeys = true; /* default to whatever, should 
> > > be overridden by depreprecatedMode default value anyway */
> > > +
> > > +    /* when using subkeys, cache at least the presence of any subkey,
> > > +    so that the rendering of templates not using subkeys will only
> > > +    look once for subkeys
> > > +     */
> > > +    private boolean hasSubkeys = true;
> > > +
> > >      public ValueParser() {}
> > >
> > >      public ValueParser(Map source)
> > > @@ -98,7 +109,11 @@
> > >          {
> > >              return null;
> > >          }
> > > -        return getSource().get(key);
> > > +        Object value = getSource().get(key);
> > > +        if (value == null && getAllowSubkeys()) {
> > > +            value = getSubkey(key);
> > > +        }
> > > +        return value;
> > >      }
> > >
> > >      public Object[] getValues(String key)
> > > @@ -359,4 +374,29 @@
> > >          return toLocales(getValues(key));
> > >      }
> > >
> > > +    protected boolean getAllowSubkeys() {
> > > +        return allowSubkeys;
> > > +    }
> > > +
> > > +    protected void setAllowSubkeys(boolean allow) {
> > > +        allowSubkeys = allow;
> > > +    }
> > > +
> > > +    protected Object getSubkey(String subkey) {
> > > +        if (!hasSubkeys || subkey == null || subkey.length() == 0) {
> > > +            return null;
> > > +        }
> > > +        Map<String,Object> values = null;
> > > +        subkey = subkey.concat(".");
> > > +        for(Map.Entry<String,Object> 
> > > entry:(Set<Map.Entry>)getSource().entrySet()) {
> > > +            if(entry.getKey().startsWith(subkey)) {
> > > +                if(values == null) {
> > > +                    values = new HashMap<String,Object>();
> > > +                }
> > > +                
> > > values.put(entry.getKey().substring(subkey.length()),entry.getValue());
> > > +            }
> > > +        }
> > > +        hasSubkeys = (values == null);
> > > +        return values;
> > > +    }
> > >  }
> > >
> > > Modified: 
> > > velocity/tools/branches/2.x/src/main/java/org/apache/velocity/tools/view/ParameterTool.java
> > > URL: 
> > > http://svn.apache.org/viewvc/velocity/tools/branches/2.x/src/main/java/org/apache/velocity/tools/view/ParameterTool.java?rev=593549&r1=593548&r2=593549&view=diff
> > > ==============================================================================
> > > --- 
> > > velocity/tools/branches/2.x/src/main/java/org/apache/velocity/tools/view/ParameterTool.java
> > >  (original)
> > > +++ 
> > > velocity/tools/branches/2.x/src/main/java/org/apache/velocity/tools/view/ParameterTool.java
> > >  Fri Nov  9 06:49:36 2007
> > > @@ -109,7 +109,11 @@
> > >       */
> > >      public Object getValue(String key)
> > >      {
> > > -        return getRequest().getParameter(key);
> > > +        Object value = getRequest().getParameter(key);
> > > +        if(value == null && getAllowSubkeys()) {
> > > +            value = getSubkey(key);
> > > +        }
> > > +        return value;
> > >      }
> > >
> > >
> > >
> > >
> >
> >
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