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From cos...@locus.apache.org
Subject cvs commit: jakarta-tomcat/src/share/org/apache/tomcat/core BaseInterceptor.java
Date Thu, 02 Nov 2000 21:24:47 GMT
costin      00/11/02 13:24:44

  Modified:    src/share/org/apache/tomcat/core BaseInterceptor.java
  Log:
  Moved "hasHook" to an interceptor, it's used by Container when it adds
  a hook.
  
  Added more comments, moved auxiliary code at end of the file.
  Removed unused code ( the old methods[], etc).
  
  Revision  Changes    Path
  1.25      +54 -68    jakarta-tomcat/src/share/org/apache/tomcat/core/BaseInterceptor.java
  
  Index: BaseInterceptor.java
  ===================================================================
  RCS file: /home/cvs/jakarta-tomcat/src/share/org/apache/tomcat/core/BaseInterceptor.java,v
  retrieving revision 1.24
  retrieving revision 1.25
  diff -u -r1.24 -r1.25
  --- BaseInterceptor.java	2000/10/08 01:02:28	1.24
  +++ BaseInterceptor.java	2000/11/02 21:24:42	1.25
  @@ -70,85 +70,33 @@
   
   /** Implement "Chain of Responsiblity" pattern ( == hooks ).
    *
  - *  You can extend this class and implement a number of hooks.
  + *  You can extend this class and implement a number of hooks. The
  + *  interceptor is added to a Container ( that represents a group of
  + *  URLs where the interceptor will operate ) and the methods that
  + *  are re-defined in the subclass are detected ( using introspection )
  + *  and used to select the chains where the intercepptor is interested
  + *  to participate.
    *
  + *  It is possible to define new chains by adding a new method to this
  + *  class. The caller ( "chain user" ) will determine the behavior in
  + *  case of error and "call all" or "call until [condition]" rules.
  + *
  + *  Interceptors are the main extension mechanism for tomcat. They have full
  + *  access and control all aspects in tomcat operation.
  + * 
    */
   public class BaseInterceptor
   {
       protected ContextManager cm;
       protected Container ct;
  -    protected String methods[]=new String[0];
       protected int debug=0;
  -    protected String name=null;
   
  -    public static final int OK=0;
  -    
       //  loghelper will use name of actual impl subclass
       protected Log loghelper = new Log("tc_log", this);
   
       public BaseInterceptor() {
       }
   
  -    // -------------------- Helpers -------------------- 
  -    public void setDebug( int d ) {
  -	debug=d;
  -    }
  -
  -    public static final String BASE_I="org.apache.tomcat.core.BaseInterceptor";
  -
  -    /** Test if the interceptor implements a particular
  -	method
  -    */
  -    public boolean hasHook( String methodN ) {
  -	// all interceptors will participate in all context-level
  -	// hooks - no need to exagerate
  -	if( "engineInit".equals( methodN ) )
  -	    return true;
  -	try {
  -	    Method myMethods[]=this.getClass().getMethods();
  -	    for( int i=0; i< myMethods.length; i++ ) {
  -		if( methodN.equals ( myMethods[i].getName() )) {
  -		    // check if it's overriden
  -		    Class declaring=myMethods[i].getDeclaringClass();
  -		    if( ! BASE_I.equals(declaring.getName() )) {
  -			//log( "Found overriden method " + methodN); 
  -			return true;
  -		    }
  -		}
  -	    }
  -	} catch ( Exception ex ) {
  -	    ex.printStackTrace();
  -	}
  -	return false;
  -    }
  -
  -    public void setContextManager( ContextManager cm ) {
  -	this.cm=cm;
  -	this.ct=cm.getContainer();
  -	loghelper.setLogger(cm.getLogger());
  -    }
  -
  -    public void setContext( Context ctx ) {
  -	this.ct=ctx.getContainer();
  -	loghelper.setLogger(ctx.getLog().getLogger());
  -    }
  -
  -    protected void log( String s ) {
  -	loghelper.log(s);
  -    }
  -
  -    protected void log( String s, Throwable t ) {
  -	loghelper.log(s, t);
  -    }
  -    
  -    protected void log( String s, int level ) {
  -	loghelper.log(s, level);
  -    }
  -    
  -    protected void log( String s, Throwable t, int level ) {
  -	loghelper.log(s, t, level);
  -    }
  -    
       // -------------------- Request notifications --------------------
       
       /** Handle mappings inside a context.
  @@ -363,7 +311,6 @@
       public void engineInit(ContextManager cm)
   	throws TomcatException
       {
  -	this.cm=cm;
       }
   
       /** Called before the ContextManager is stoped.
  @@ -377,8 +324,8 @@
   
       /**
        *  Called when a context is added to a CM. The context is probably not
  -     *  initialized yet, only path, docRoot, host, and properties set before adding
  -     *  the context ( in server.xml for example ) are available.
  +     *  initialized yet, only path, docRoot, host, and properties set before
  +     *  adding the context ( in server.xml for example ) are available.
        * 
        *  At this stage mappers can start creating structures for the
        *  context ( the actual loading of the context may be delayed in
  @@ -438,5 +385,44 @@
   	throws TomcatException
       {
       }
  +
  +    // -------------------- Helpers --------------------
  +    // Methods used in internal housekeeping
  +    
  +    public void setDebug( int d ) {
  +	debug=d;
  +    }
  +
  +    public void setContextManager( ContextManager cm ) {
  +	this.cm=cm;
  +	this.ct=cm.getContainer();
  +	loghelper.setLogger(cm.getLogger());
  +    }
  +
  +    /** Called for context-level interceptors
  +     */
  +    public void setContext( Context ctx ) {
  +	if( ctx == null ) return;
  +	this.cm=ctx.getContextManager();
  +	this.ct=ctx.getContainer();
  +	loghelper.setLogger(ctx.getLog().getLogger());
  +    }
  +
  +    protected void log( String s ) {
  +	loghelper.log(s);
  +    }
  +
  +    protected void log( String s, Throwable t ) {
  +	loghelper.log(s, t);
  +    }
  +    
  +    protected void log( String s, int level ) {
  +	loghelper.log(s, level);
  +    }
  +    
  +    protected void log( String s, Throwable t, int level ) {
  +	loghelper.log(s, t, level);
  +    }
  +    
   
   }
  
  
  

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