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From "Paul Glezen" <pgle...@us.ibm.com>
Subject Re: Recent commit by Paul
Date Mon, 04 Jun 2001 14:49:18 GMT
This would be troublesome if multiple extensions were in use within the
same JVM.  I do provide an alternative (referred to as "very manual
configuration" in the package javadocs) that leaves the hierarchy alone.
Unfortunately, this does not occur automatically (as implied by the name
"very manual").

It's certainly something that needs to be worked out because I'm planning
to use multiple extensions in the near future.  (Namely, ServletCategory
and EJB Category; which could conceivably be present in the same JVM).
Presently, PropertyConfigurator only supports configuration of one category
factory.  As it is now, I don't see how multiple extensions could step on
each other without doing so manually.

- Paul

Paul Glezen
IT Specialist
Software Services
818 539 3321


Ceki Gülcü <cgu@qos.ch> on 06/04/2001 12:55:24 AM

Please respond to "LOG4J Developers Mailing List"
      <log4j-dev@jakarta.apache.org>

To:   "LOG4J Developers Mailing List" <log4j-dev@jakarta.apache.org>
cc:
Subject:  Recent commit by Paul




Hello Paul,

The recent addition of

   Category.getDefaultHierarchy().setCategoryFactory(categoryFactory);

in configureCategoryFactory method in PropertyConfigurator.java is
troublesome. Setting the category factory once and fall al may be suitable
in certain cases but precludes different extensions of Category class to
live side by side. This will come and bite us again and again.

This is it for now. Ceki

At 06:20 04.06.2001 +0000, you wrote:
>pglezen     01/06/03 23:20:57
>
>  Modified:    src/java/org/apache/log4j PropertyConfigurator.java
>                        Hierarchy.java
>  Log:
>  1. PropertyConfigurator - Added a few lines to
>        configureCategoryFactory to take advantage of the
>        PropertySetter class.
>  2. Hierarchy - Added a setter for the default category
>        factory so that Category.getInstance uses the
>        correct factory.  The default category was changed
>        to non-static.  This allows one to use different
>        factories for different hierarchies.
>
>  Revision  Changes    Path
>  1.26      +7 -4
jakarta-log4j/src/java/org/apache/log4j/PropertyConfigurator.java
>
>  Index: PropertyConfigurator.java
>  ===================================================================
>  RCS file:
/home/cvs/jakarta-log4j/src/java/org/apache/log4j/PropertyConfigurator.java,v

>  retrieving revision 1.25
>  retrieving revision 1.26
>  diff -u -r1.25 -r1.26
>  --- PropertyConfigurator.java 2001/05/31 16:55:19     1.25
>  +++ PropertyConfigurator.java 2001/06/04 06:20:56     1.26
>  @@ -87,11 +87,12 @@
>     protected Hashtable registry = new Hashtable(11);
>     protected CategoryFactory categoryFactory = new
DefaultCategoryFactory();
>
>  -  static final String CATEGORY_PREFIX = "log4j.category.";
>  -  static final String ADDITIVITY_PREFIX = "log4j.additivity.";
>  +  static final String      CATEGORY_PREFIX = "log4j.category.";
>  +  static final String       FACTORY_PREFIX = "log4j.factory";
>  +  static final String    ADDITIVITY_PREFIX = "log4j.additivity.";
>     static final String ROOT_CATEGORY_PREFIX = "log4j.rootCategory";
>  -  static final String APPENDER_PREFIX = "log4j.appender.";
>  -  static final String RENDERER_PREFIX = "log4j.renderer.";
>  +  static final String      APPENDER_PREFIX = "log4j.appender.";
>  +  static final String      RENDERER_PREFIX = "log4j.renderer.";
>
>     /** Key for specifying the {@link
org.apache.log4j.spi.CategoryFactory
>         CategoryFactory}.  Currently set to
>  @@ -459,6 +460,8 @@
>
OptionConverter.instantiateByClassName(factoryClassName,
>
CategoryFactory.class,
>                                                        categoryFactory);
>  +      PropertySetter.setProperties(categoryFactory, props,
FACTORY_PREFIX + ".");
>  +      Category.getDefaultHierarchy
().setCategoryFactory(categoryFactory);
>       }
>     }
>
>
>
>
>  1.16      +13 -3
jakarta-log4j/src/java/org/apache/log4j/Hierarchy.java
>
>  Index: Hierarchy.java
>  ===================================================================
>  RCS file:
/home/cvs/jakarta-log4j/src/java/org/apache/log4j/Hierarchy.java,v
>  retrieving revision 1.15
>  retrieving revision 1.16
>  diff -u -r1.15 -r1.16
>  --- Hierarchy.java    2001/05/20 11:01:13     1.15
>  +++ Hierarchy.java    2001/06/04 06:20:56     1.16
>  @@ -61,9 +61,7 @@
>     static final int DISABLE_OFF = -1;
>     static final int DISABLE_OVERRIDE = -2;
>
>  -  static
>  -  private
>  -  CategoryFactory defaultFactory = new DefaultCategoryFactory();
>  +  private CategoryFactory defaultFactory;
>
>
>     Hashtable ht;
>  @@ -89,6 +87,7 @@
>       disable = DISABLE_OFF;
>       this.root.setHierarchy(this);
>       rendererMap = new RendererMap();
>  +     defaultFactory = new DefaultCategoryFactory();
>     }
>
>     /**
>  @@ -404,6 +403,17 @@
>         }
>       }
>       rendererMap.clear();
>  +  }
>  +
>  +  /**
>  +     Set the default CategoryFactory instance.
>  +
>  +     @since 1.1
>  +   */
>  +  public void setCategoryFactory(CategoryFactory factory)
>  +  {
>  +    if (factory != null)
>  +      defaultFactory = factory;
>     }
>
>     /**
>
>
>
>
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--
Ceki Gülcü


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