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