1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/BLIP/BLIPDispatcher.m	Fri May 23 17:37:36 2008 -0700
     1.3 @@ -0,0 +1,108 @@
     1.4 +//
     1.5 +//  BLIPDispatcher.m
     1.6 +//  MYNetwork
     1.7 +//
     1.8 +//  Created by Jens Alfke on 5/15/08.
     1.9 +//  Copyright 2008 Jens Alfke. All rights reserved.
    1.10 +//
    1.11 +
    1.12 +#import "BLIPDispatcher.h"
    1.13 +#import "Target.h"
    1.14 +#import "BLIPRequest.h"
    1.15 +#import "BLIPProperties.h"
    1.16 +
    1.17 +
    1.18 +@implementation BLIPDispatcher
    1.19 +
    1.20 +
    1.21 +- (id) init
    1.22 +{
    1.23 +    self = [super init];
    1.24 +    if (self != nil) {
    1.25 +        _targets = [[NSMutableArray alloc] init];
    1.26 +        _predicates = [[NSMutableArray alloc] init];
    1.27 +    }
    1.28 +    return self;
    1.29 +}
    1.30 +
    1.31 +- (void) dealloc
    1.32 +{
    1.33 +    [_targets release];
    1.34 +    [_predicates release];
    1.35 +    [_parent release];
    1.36 +    [super dealloc];
    1.37 +}
    1.38 +
    1.39 +
    1.40 +@synthesize parent=_parent;
    1.41 +
    1.42 +
    1.43 +- (void) addTarget: (MYTarget*)target forPredicate: (NSPredicate*)predicate
    1.44 +{
    1.45 +    [_targets addObject: target];
    1.46 +    [_predicates addObject: predicate];
    1.47 +}
    1.48 +
    1.49 +
    1.50 +- (void) removeTarget: (MYTarget*)target
    1.51 +{
    1.52 +    NSUInteger i = [_targets indexOfObject: target];
    1.53 +    if( i != NSNotFound ) {
    1.54 +        [_targets removeObjectAtIndex: i];
    1.55 +        [_predicates removeObjectAtIndex: i];
    1.56 +    }
    1.57 +}
    1.58 +
    1.59 +
    1.60 +- (void) addTarget: (MYTarget*)target forValueOfProperty: (NSString*)value forKey: (NSString*)key
    1.61 +{
    1.62 +    [self addTarget: target 
    1.63 +       forPredicate: [NSComparisonPredicate predicateWithLeftExpression: [NSExpression expressionForKeyPath: key]
    1.64 +                                                        rightExpression: [NSExpression expressionForConstantValue: value]
    1.65 +                                                               modifier: NSDirectPredicateModifier
    1.66 +                                                                   type: NSEqualToPredicateOperatorType
    1.67 +                                                                options: 0]];
    1.68 +}
    1.69 +
    1.70 +
    1.71 +- (BOOL) dispatchMessage: (BLIPMessage*)message
    1.72 +{
    1.73 +    NSDictionary *properties = message.properties.allProperties;
    1.74 +    NSUInteger n = _predicates.count;
    1.75 +    for( NSUInteger i=0; i<n; i++ ) {
    1.76 +        NSPredicate *p = [_predicates objectAtIndex: i];
    1.77 +        if( [p evaluateWithObject: properties] ) {
    1.78 +            MYTarget *target = [_targets objectAtIndex: i];
    1.79 +            LogTo(BLIP,@"Dispatcher matched %@ -- calling %@",p,target);
    1.80 +            [target invokeWithSender: message];
    1.81 +            return YES;
    1.82 +        }
    1.83 +    }
    1.84 +    return [_parent dispatchMessage: message];
    1.85 +}
    1.86 +
    1.87 +
    1.88 +@end
    1.89 +
    1.90 +
    1.91 +/*
    1.92 + Copyright (c) 2008, Jens Alfke <jens@mooseyard.com>. All rights reserved.
    1.93 + 
    1.94 + Redistribution and use in source and binary forms, with or without modification, are permitted
    1.95 + provided that the following conditions are met:
    1.96 + 
    1.97 + * Redistributions of source code must retain the above copyright notice, this list of conditions
    1.98 + and the following disclaimer.
    1.99 + * Redistributions in binary form must reproduce the above copyright notice, this list of conditions
   1.100 + and the following disclaimer in the documentation and/or other materials provided with the
   1.101 + distribution.
   1.102 + 
   1.103 + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
   1.104 + IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 
   1.105 + FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRI-
   1.106 + BUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   1.107 + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
   1.108 +  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
   1.109 + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 
   1.110 + THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   1.111 + */