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From adammurd...@apache.org
Subject cvs commit: jakarta-ant-myrmidon/antlib/src/java/org/apache/antlib/core IsInstanceCondition.java Resources.properties
Date Tue, 02 Jul 2002 02:21:24 GMT
adammurdoch    2002/07/01 19:21:24

  Modified:    antlib/src/java/org/apache/antlib/core Resources.properties
  Added:       antlib/src/java/org/apache/antlib/core
                        IsInstanceCondition.java
  Log:
  Added <is-instance> condition.  Useful for tests.
  
  Revision  Changes    Path
  1.8       +5 -1      jakarta-ant-myrmidon/antlib/src/java/org/apache/antlib/core/Resources.properties
  
  Index: Resources.properties
  ===================================================================
  RCS file: /home/cvs/jakarta-ant-myrmidon/antlib/src/java/org/apache/antlib/core/Resources.properties,v
  retrieving revision 1.7
  retrieving revision 1.8
  diff -u -r1.7 -r1.8
  --- Resources.properties	26 Jun 2002 02:12:36 -0000	1.7
  +++ Resources.properties	2 Jul 2002 02:21:24 -0000	1.8
  @@ -38,4 +38,8 @@
   load-dom.load-file.error=Could not load file "{0}".
   
   include.no-file.error=No source file specified.
  -include.load-file.error=Could not load file "{0}".
  \ No newline at end of file
  +include.load-file.error=Could not load file "{0}".
  +
  +is-instance.no-property.error=No property name specified.
  +is-instance.no-role.error=No role specified.
  +is-instance.unknown-role.error=Unknown role "{0}".
  \ No newline at end of file
  
  
  
  1.1                  jakarta-ant-myrmidon/antlib/src/java/org/apache/antlib/core/IsInstanceCondition.java
  
  Index: IsInstanceCondition.java
  ===================================================================
  /*
   * Copyright (C) The Apache Software Foundation. All rights reserved.
   *
   * This software is published under the terms of the Apache Software License
   * version 1.1, a copy of which has been included with this distribution in
   * the LICENSE.txt file.
   */
  package org.apache.antlib.core;
  
  import org.apache.myrmidon.framework.conditions.Condition;
  import org.apache.myrmidon.api.TaskContext;
  import org.apache.myrmidon.api.TaskException;
  import org.apache.myrmidon.interfaces.role.RoleManager;
  import org.apache.myrmidon.interfaces.role.RoleInfo;
  import org.apache.avalon.excalibur.i18n.ResourceManager;
  import org.apache.avalon.excalibur.i18n.Resources;
  
  /**
   * Checks whether a property is set to an instance of a particular type.
   *
   * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
   * @version $Revision: 1.1 $ $Date: 2002/07/02 02:21:24 $
   *
   * @ant.type type="condition" name="is-instance"
   */
  public class IsInstanceCondition
      implements Condition
  {
      private static final Resources REZ =
          ResourceManager.getPackageResources( IsInstanceCondition.class );
  
      private String m_property;
      private String m_role;
  
      /**
       * The property to check.
       */
      public void setProperty( final String property )
      {
          m_property = property;
      }
  
      /**
       * The role to check.
       */
      public void setRole( final String role )
      {
          m_role = role;
      }
  
      /**
       * Evaluates this condition.
       *
       * @param context
       *      The context to evaluate the condition in.
       */
      public boolean evaluate( final TaskContext context )
          throws TaskException
      {
          if( m_property == null )
          {
              final String message = REZ.getString( "is-instance.no-property.error" );
              throw new TaskException( message );
          }
          if( m_role == null )
          {
              final String message = REZ.getString( "is-instance.no-role.error" );
              throw new TaskException( message );
          }
  
          final Object propValue = context.getProperty( m_property );
          if( propValue == null )
          {
              return false;
          }
  
          // Get meta-info for role
          final RoleManager roleManager = (RoleManager)context.getService( RoleManager.class
);
          final RoleInfo role = roleManager.getRoleByShortName( m_role );
          if( role == null )
          {
              final String message = REZ.getString( "is-instance.unknown-role.error", m_role
);
              throw new TaskException( message );
          }
  
          return role.getImplementationClass().isInstance( propValue );
      }
  }
  
  
  

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