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| 1 |  |  |  |  |  |  |  | 
| 2 |  |  |  |  |  |  | ############################################################################# | 
| 3 |  |  |  |  |  |  | ## $Id: CallDispatcher.pm 6783 2006-08-11 17:43:28Z spadkins $ | 
| 4 |  |  |  |  |  |  | ############################################################################# | 
| 5 |  |  |  |  |  |  |  | 
| 6 |  |  |  |  |  |  | package App::CallDispatcher; | 
| 7 |  |  |  |  |  |  | $VERSION = (q$Revision: 6783 $ =~ /(\d[\d\.]*)/)[0];  # VERSION numbers generated by svn | 
| 8 |  |  |  |  |  |  |  | 
| 9 | 1 |  |  | 1 |  | 5 | use App; | 
|  | 1 |  |  |  |  | 3 |  | 
|  | 1 |  |  |  |  | 21 |  | 
| 10 | 1 |  |  | 1 |  | 410 | use App::Service; | 
|  | 1 |  |  |  |  | 3 |  | 
|  | 1 |  |  |  |  | 47 |  | 
| 11 |  |  |  |  |  |  | @ISA = ( "App::Service" ); | 
| 12 |  |  |  |  |  |  |  | 
| 13 | 1 |  |  | 1 |  | 6 | use strict; | 
|  | 1 |  |  |  |  | 2 |  | 
|  | 1 |  |  |  |  | 159 |  | 
| 14 |  |  |  |  |  |  |  | 
| 15 |  |  |  |  |  |  | =head1 NAME | 
| 16 |  |  |  |  |  |  |  | 
| 17 |  |  |  |  |  |  | App::CallDispatcher - synchronous (potentially remote) call_dispatcher invocation | 
| 18 |  |  |  |  |  |  |  | 
| 19 |  |  |  |  |  |  | =head1 SYNOPSIS | 
| 20 |  |  |  |  |  |  |  | 
| 21 |  |  |  |  |  |  | use App; | 
| 22 |  |  |  |  |  |  |  | 
| 23 |  |  |  |  |  |  | $context = App->context(); | 
| 24 |  |  |  |  |  |  | $call_dispatcher = $context->service("CallDispatcher");  # or ... | 
| 25 |  |  |  |  |  |  | $call_dispatcher = $context->call_dispatcher(); | 
| 26 |  |  |  |  |  |  |  | 
| 27 |  |  |  |  |  |  | $call_dispatcher->call($request, $response); | 
| 28 |  |  |  |  |  |  | $response = $call_dispatcher->call($request); | 
| 29 |  |  |  |  |  |  | $response = $call_dispatcher->call(%named); | 
| 30 |  |  |  |  |  |  |  | 
| 31 |  |  |  |  |  |  | =head1 DESCRIPTION | 
| 32 |  |  |  |  |  |  |  | 
| 33 |  |  |  |  |  |  | A CallDispatcher service is a means by which a function call (perhaps remote) | 
| 34 |  |  |  |  |  |  | may be made synchronously. | 
| 35 |  |  |  |  |  |  |  | 
| 36 |  |  |  |  |  |  | =cut | 
| 37 |  |  |  |  |  |  |  | 
| 38 |  |  |  |  |  |  | ############################################################################# | 
| 39 |  |  |  |  |  |  | # CLASS GROUP | 
| 40 |  |  |  |  |  |  | ############################################################################# | 
| 41 |  |  |  |  |  |  |  | 
| 42 |  |  |  |  |  |  | =head1 Class Group: CallDispatcher | 
| 43 |  |  |  |  |  |  |  | 
| 44 |  |  |  |  |  |  | The following classes might be a part of the CallDispatcher Class Group. | 
| 45 |  |  |  |  |  |  |  | 
| 46 |  |  |  |  |  |  | =over | 
| 47 |  |  |  |  |  |  |  | 
| 48 |  |  |  |  |  |  | =item * Class: App::CallDispatcher | 
| 49 |  |  |  |  |  |  |  | 
| 50 |  |  |  |  |  |  | =item * Class: App::CallDispatcher::HTTPSimple | 
| 51 |  |  |  |  |  |  |  | 
| 52 |  |  |  |  |  |  | =item * Class: App::CallDispatcher::SOAP | 
| 53 |  |  |  |  |  |  |  | 
| 54 |  |  |  |  |  |  | =item * Class: App::CallDispatcher::pRPC | 
| 55 |  |  |  |  |  |  |  | 
| 56 |  |  |  |  |  |  | =item * Class: App::CallDispatcher::PlRPC | 
| 57 |  |  |  |  |  |  |  | 
| 58 |  |  |  |  |  |  | =item * Class: App::CallDispatcher::Messaging | 
| 59 |  |  |  |  |  |  |  | 
| 60 |  |  |  |  |  |  | =back | 
| 61 |  |  |  |  |  |  |  | 
| 62 |  |  |  |  |  |  | =cut | 
| 63 |  |  |  |  |  |  |  | 
| 64 |  |  |  |  |  |  | ############################################################################# | 
| 65 |  |  |  |  |  |  | # CLASS | 
| 66 |  |  |  |  |  |  | ############################################################################# | 
| 67 |  |  |  |  |  |  |  | 
| 68 |  |  |  |  |  |  | =head1 Class: App::CallDispatcher | 
| 69 |  |  |  |  |  |  |  | 
| 70 |  |  |  |  |  |  | A CallDispatcher service is a means by which a function call (perhaps remote) | 
| 71 |  |  |  |  |  |  | may be made synchronously or asynchronously. | 
| 72 |  |  |  |  |  |  |  | 
| 73 |  |  |  |  |  |  | * Throws: App::Exception::CallDispatcher | 
| 74 |  |  |  |  |  |  | * Since:  0.01 | 
| 75 |  |  |  |  |  |  |  | 
| 76 |  |  |  |  |  |  | =head2 Class Design | 
| 77 |  |  |  |  |  |  |  | 
| 78 |  |  |  |  |  |  | ... | 
| 79 |  |  |  |  |  |  |  | 
| 80 |  |  |  |  |  |  | =cut | 
| 81 |  |  |  |  |  |  |  | 
| 82 |  |  |  |  |  |  | ############################################################################# | 
| 83 |  |  |  |  |  |  | # CONSTRUCTOR METHODS | 
| 84 |  |  |  |  |  |  | ############################################################################# | 
| 85 |  |  |  |  |  |  |  | 
| 86 |  |  |  |  |  |  | =head1 Constructor Methods: | 
| 87 |  |  |  |  |  |  |  | 
| 88 |  |  |  |  |  |  | =cut | 
| 89 |  |  |  |  |  |  |  | 
| 90 |  |  |  |  |  |  | ############################################################################# | 
| 91 |  |  |  |  |  |  | # new() | 
| 92 |  |  |  |  |  |  | ############################################################################# | 
| 93 |  |  |  |  |  |  |  | 
| 94 |  |  |  |  |  |  | =head2 new() | 
| 95 |  |  |  |  |  |  |  | 
| 96 |  |  |  |  |  |  | The constructor is inherited from | 
| 97 |  |  |  |  |  |  | L|App::Service/"new()">. | 
| 98 |  |  |  |  |  |  |  | 
| 99 |  |  |  |  |  |  | =cut | 
| 100 |  |  |  |  |  |  |  | 
| 101 |  |  |  |  |  |  | ############################################################################# | 
| 102 |  |  |  |  |  |  | # PUBLIC METHODS | 
| 103 |  |  |  |  |  |  | ############################################################################# | 
| 104 |  |  |  |  |  |  |  | 
| 105 |  |  |  |  |  |  | =head1 Public Methods: | 
| 106 |  |  |  |  |  |  |  | 
| 107 |  |  |  |  |  |  | =cut | 
| 108 |  |  |  |  |  |  |  | 
| 109 |  |  |  |  |  |  | ############################################################################# | 
| 110 |  |  |  |  |  |  | # call() | 
| 111 |  |  |  |  |  |  | ############################################################################# | 
| 112 |  |  |  |  |  |  |  | 
| 113 |  |  |  |  |  |  | =head2 call() | 
| 114 |  |  |  |  |  |  |  | 
| 115 |  |  |  |  |  |  | * Signature: @returnvals = $call_dispatcher->call($service, $name, $method, $args); | 
| 116 |  |  |  |  |  |  | * Param:     $service           string  [in] | 
| 117 |  |  |  |  |  |  | * Param:     $name              string  [in] | 
| 118 |  |  |  |  |  |  | * Param:     $method            string  [in] | 
| 119 |  |  |  |  |  |  | * Param:     $args              ARRAY   [in] | 
| 120 |  |  |  |  |  |  | * Return:    @returnvals        any | 
| 121 |  |  |  |  |  |  | * Throws:    App::Exception::CallDispatcher | 
| 122 |  |  |  |  |  |  | * Since:     0.01 | 
| 123 |  |  |  |  |  |  |  | 
| 124 |  |  |  |  |  |  | Sample Usage: | 
| 125 |  |  |  |  |  |  |  | 
| 126 |  |  |  |  |  |  | @returnvals = $call_dispatcher->call("Repository","db", | 
| 127 |  |  |  |  |  |  | "get_rows",["city",{city_cd=>"LAX"},["city_cd","state","country"]]); | 
| 128 |  |  |  |  |  |  |  | 
| 129 |  |  |  |  |  |  | The default call dispatcher is a local call dispatcher. | 
| 130 |  |  |  |  |  |  | It simply passes the call() on to the local context for execution. | 
| 131 |  |  |  |  |  |  | It results in an in-process method call rather than a remote method call. | 
| 132 |  |  |  |  |  |  |  | 
| 133 |  |  |  |  |  |  | =cut | 
| 134 |  |  |  |  |  |  |  | 
| 135 |  |  |  |  |  |  | sub call { | 
| 136 | 0 |  |  | 0 | 1 |  | my ($self, $service, $name, $method, $args) = @_; | 
| 137 | 0 |  |  |  |  |  | my $context = $self->{context}; | 
| 138 | 0 |  |  |  |  |  | my @returnvals = $context->call($service, $name, $method, $args); | 
| 139 |  |  |  |  |  |  | } | 
| 140 |  |  |  |  |  |  |  | 
| 141 |  |  |  |  |  |  | ############################################################################# | 
| 142 |  |  |  |  |  |  | # PROTECTED METHODS | 
| 143 |  |  |  |  |  |  | ############################################################################# | 
| 144 |  |  |  |  |  |  |  | 
| 145 |  |  |  |  |  |  | =head1 Protected Methods: | 
| 146 |  |  |  |  |  |  |  | 
| 147 |  |  |  |  |  |  | =cut | 
| 148 |  |  |  |  |  |  |  | 
| 149 |  |  |  |  |  |  | ############################################################################# | 
| 150 |  |  |  |  |  |  | # Method: service_type() | 
| 151 |  |  |  |  |  |  | ############################################################################# | 
| 152 |  |  |  |  |  |  |  | 
| 153 |  |  |  |  |  |  | =head2 service_type() | 
| 154 |  |  |  |  |  |  |  | 
| 155 |  |  |  |  |  |  | Returns 'CallDispatcher'; | 
| 156 |  |  |  |  |  |  |  | 
| 157 |  |  |  |  |  |  | * Signature: $service_type = App::CallDispatcher->service_type(); | 
| 158 |  |  |  |  |  |  | * Param:     void | 
| 159 |  |  |  |  |  |  | * Return:    $service_type  string | 
| 160 |  |  |  |  |  |  | * Since:     0.01 | 
| 161 |  |  |  |  |  |  |  | 
| 162 |  |  |  |  |  |  | $service_type = $cdisp->service_type(); | 
| 163 |  |  |  |  |  |  |  | 
| 164 |  |  |  |  |  |  | =cut | 
| 165 |  |  |  |  |  |  |  | 
| 166 |  |  |  |  |  |  | sub service_type () { 'CallDispatcher'; } | 
| 167 |  |  |  |  |  |  |  | 
| 168 |  |  |  |  |  |  | =head1 ACKNOWLEDGEMENTS | 
| 169 |  |  |  |  |  |  |  | 
| 170 |  |  |  |  |  |  | * Author:  Stephen Adkins | 
| 171 |  |  |  |  |  |  | * License: This is free software. It is licensed under the same terms as Perl itself. | 
| 172 |  |  |  |  |  |  |  | 
| 173 |  |  |  |  |  |  | =head1 SEE ALSO | 
| 174 |  |  |  |  |  |  |  | 
| 175 |  |  |  |  |  |  | L|App::Context>, | 
| 176 |  |  |  |  |  |  | L|App::Service> | 
| 177 |  |  |  |  |  |  |  | 
| 178 |  |  |  |  |  |  | =cut | 
| 179 |  |  |  |  |  |  |  | 
| 180 |  |  |  |  |  |  | 1; | 
| 181 |  |  |  |  |  |  |  |