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models/Language_concepts/Event_Sharing_Using_COORDINATE_with_SHARE.mp

+/*┬────────────────────────────────────────────────────────┐
+│*│ ┌─[ Title and Authors ]──────────────────────────────┐ │
+│*│ │ Event Sharing Using COORDINATE with SHARE   	     │ │
+│*│ │  Created by Kristin Giammarco and Mike Collins 	 │ │
+│*│ │  2021-11-11 					                     │ │
+│*│ └────────────────────────────────────────────────────┘ │
+│*│                                                        │
+│*│ ┌─[ Purpose ]────────────────────────────────────────┐ │
+│*│ │ To illustrate how SHARE ALL is a shortcut for a    │ │
+│*│ │ COORDINATE statement with SHARE.                   │ │
+│*│ └────────────────────────────────────────────────────┘ │
+│*│							                               │
+│*│ ┌─[ Description ]────────────────────────────────────┐ │
+│*│ │ This model shows the use of COORDINATE statements  │ │
+│*│ │ in lieu of SHARE ALL statements, illustrating how  │ │
+│*│ │ SHARE ALL is a contraction of the longer COORDINATE│ │
+│*│ │ statement that composes the same relationships.    │ │
+│*│ │ SHARE ALL exists because the author of the MP   	 │ │
+│*│ │ language, Mikhail Auguston, believes this use of   │ │
+│*│ │ event sharing is so common that it deserves a      │ │
+│*│ │ concise way to perform the sharing operation.   	 │ │
+│*│ │ Understanding how SHARE and SHARE ALL work is   	 │ │
+│*│ │ helpful when there is a need to compose more   	 │ │
+│*│ │ complex sharing operations, such as sharing among  │ │
+│*│ │ composite events.     				             │ │
+│*│ └────────────────────────────────────────────────────┘ │
+│*│                                                        │
+│*│ ┌─[ References ]─────────────────────────────────────┐ │
+│*│ │ "Example 3: Data Flow" from Auguston, M. "Monterey │ │
+│*│ │ Phoenix System and Software Architecture and       │ │
+│*│ │ Workflow Modeling Language Manual" (Version 4).    │ │
+│*│ │ 2020. Available online:                            │ │
+│*│ │ https://wiki.nps.edu/display/MP/Documentation 	 │ │
+│*│ │ 							                         │ │
+│*│ │ Example02_DataFlow_EventSharing.  Available online:│ │
+│*│ │ https://gitlab.nps.edu/monterey-phoenix/mp-model-collection/preloaded-examples/-/tree/master/models
+│*│ └────────────────────────────────────────────────────┘ │
+│*│                                                        │
+│*│ ┌─[ Search Terms ]───────────────────────────────────┐ │
+│*│ │ behavior, data flow; event sharing                 │ │
+│*│ └────────────────────────────────────────────────────┘ │
+│*│                                                        │
+│*│ ┌─[ Instructions ]───────────────────────────────────┐ │
+│*│ │ Run for Scopes 1 and up.                           │ │
+│*│ ├─[ Run Statistics ]─────────────────────────────────┤ │
+│*│ │ Scope 1: 3 traces in less than 1 sec.              │ │
+│*│ │ Scope 2: 28 traces in less than 1 sec.             │ │
+│*│ │ Scope 3: 165 traces in less than 1 sec.            │ │
+│*│ └────────────────────────────────────────────────────┘ │
+└*┴───────────────────────────────────────────────────────*/
+
+SCHEMA Event_Sharing_Using_COORDINATE_with_SHARE
+
+ROOT Writer: (* ( working | writing ) *);
+
+/* writing events should precede reading */
+ROOT File:   (+ writing +) (* reading *);
+
+/*Writer, File SHARE ALL writing;*/
+COORDINATE 	$a: writing 	FROM Writer, 
+			$b: writing  	FROM File 
+    DO SHARE $a $b; OD;
+
+
+ROOT Reader: (* ( reading | working ) *);
+
+/*Reader, File SHARE ALL reading;*/
+COORDINATE 	$a: reading 	FROM Reader, 
+			$b: reading  	FROM File 
+    DO SHARE $a $b; OD;
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