jens@0: //
jens@0: //  BLIPDispatcher.m
jens@0: //  MYNetwork
jens@0: //
jens@0: //  Created by Jens Alfke on 5/15/08.
jens@0: //  Copyright 2008 Jens Alfke. All rights reserved.
jens@0: //
jens@0: 
jens@0: #import "BLIPDispatcher.h"
jens@0: #import "Target.h"
jens@0: #import "BLIPRequest.h"
jens@0: #import "BLIPProperties.h"
jens@1: #import "Logging.h"
jens@1: #import "Test.h"
jens@0: 
jens@0: 
jens@0: @implementation BLIPDispatcher
jens@0: 
jens@0: 
jens@0: - (id) init
jens@0: {
jens@0:     self = [super init];
jens@0:     if (self != nil) {
jens@0:         _targets = [[NSMutableArray alloc] init];
jens@0:         _predicates = [[NSMutableArray alloc] init];
jens@0:     }
jens@0:     return self;
jens@0: }
jens@0: 
jens@0: - (void) dealloc
jens@0: {
jens@0:     [_targets release];
jens@0:     [_predicates release];
jens@0:     [_parent release];
jens@0:     [super dealloc];
jens@0: }
jens@0: 
jens@0: 
jens@0: @synthesize parent=_parent;
jens@0: 
jens@0: 
jens@0: - (void) addTarget: (MYTarget*)target forPredicate: (NSPredicate*)predicate
jens@0: {
jens@0:     [_targets addObject: target];
jens@0:     [_predicates addObject: predicate];
jens@0: }
jens@0: 
jens@0: 
jens@0: - (void) removeTarget: (MYTarget*)target
jens@0: {
jens@0:     NSUInteger i = [_targets indexOfObject: target];
jens@0:     if( i != NSNotFound ) {
jens@0:         [_targets removeObjectAtIndex: i];
jens@0:         [_predicates removeObjectAtIndex: i];
jens@0:     }
jens@0: }
jens@0: 
jens@0: 
jens@0: - (void) addTarget: (MYTarget*)target forValueOfProperty: (NSString*)value forKey: (NSString*)key
jens@0: {
jens@0:     [self addTarget: target 
jens@0:        forPredicate: [NSComparisonPredicate predicateWithLeftExpression: [NSExpression expressionForKeyPath: key]
jens@0:                                                         rightExpression: [NSExpression expressionForConstantValue: value]
jens@0:                                                                modifier: NSDirectPredicateModifier
jens@0:                                                                    type: NSEqualToPredicateOperatorType
jens@0:                                                                 options: 0]];
jens@0: }
jens@0: 
jens@0: 
jens@0: - (BOOL) dispatchMessage: (BLIPMessage*)message
jens@0: {
jens@0:     NSDictionary *properties = message.properties.allProperties;
jens@0:     NSUInteger n = _predicates.count;
jens@0:     for( NSUInteger i=0; i<n; i++ ) {
jens@0:         NSPredicate *p = [_predicates objectAtIndex: i];
jens@0:         if( [p evaluateWithObject: properties] ) {
jens@0:             MYTarget *target = [_targets objectAtIndex: i];
jens@0:             LogTo(BLIP,@"Dispatcher matched %@ -- calling %@",p,target);
jens@0:             [target invokeWithSender: message];
jens@0:             return YES;
jens@0:         }
jens@0:     }
jens@0:     return [_parent dispatchMessage: message];
jens@0: }
jens@0: 
jens@0: 
jens@2: - (MYTarget*) asTarget;
jens@2: {
jens@2:     return $target(self,dispatchMessage:);
jens@2: }
jens@2: 
jens@2: 
jens@0: @end
jens@0: 
jens@0: 
jens@0: /*
jens@0:  Copyright (c) 2008, Jens Alfke <jens@mooseyard.com>. All rights reserved.
jens@0:  
jens@0:  Redistribution and use in source and binary forms, with or without modification, are permitted
jens@0:  provided that the following conditions are met:
jens@0:  
jens@0:  * Redistributions of source code must retain the above copyright notice, this list of conditions
jens@0:  and the following disclaimer.
jens@0:  * Redistributions in binary form must reproduce the above copyright notice, this list of conditions
jens@0:  and the following disclaimer in the documentation and/or other materials provided with the
jens@0:  distribution.
jens@0:  
jens@0:  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
jens@0:  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 
jens@0:  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRI-
jens@0:  BUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
jens@0:  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
jens@0:   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
jens@0:  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 
jens@0:  THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
jens@0:  */