Metis Smart Modeling - Rules
From Metis Documentation
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== What is a rule? == | == What is a rule? == | ||
[[Image:Model_Exec_3.png|thumb|upright=0.5|alt=Metis Smart Quote Rule Execution Description|Metis Smart Quote Rule Execution Description]] | [[Image:Model_Exec_3.png|thumb|upright=0.5|alt=Metis Smart Quote Rule Execution Description|Metis Smart Quote Rule Execution Description]] | ||
| - | Based on the model execution scheme, rules fit inside of group of rules in Metis. They are the logical part of the execution process. As described in the model section, once a group of rules is executed, all [[Metis_Smart_Modeling_-_Variables|variables]] are instantiated and only after this the rules are executed. In opposition to groups of rules inside a model, rules don't have a specific order in which they are | + | Based on the [[Metis_Smart_Modeling_-_Models|model]] execution scheme, rules fit inside of group of rules in Metis. They are the logical part of the execution process. As described in the [[Metis_Smart_Modeling_-_Models|model]] section, once a group of rules is executed, all [[Metis_Smart_Modeling_-_Variables|variables]] are instantiated and only after this the rules are executed. In opposition to groups of rules inside a [[Metis_Smart_Modeling_-_Models|model]], rules don't have a specific order in which they are |
Detailed description of a rule and its components. | Detailed description of a rule and its components. | ||
| - | Link to the execution process of models. | + | Link to the execution process of [[Metis_Smart_Modeling_-_Models|models]]. |
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'''Q from''' | '''Q from''' | ||
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| - | The value set in this field will define the lower limit for which the rule is valid and should be executed. For example, if the "Q in" value is 6 and that the "Q from" value is 5, then the rule will provide an output. The "Q from" value can also be considered as a base value for the [[Metis_Smart_Modeling_-_Systems|system]] in which the model is used. | + | The value set in this field will define the lower limit for which the rule is valid and should be executed. For example, if the "Q in" value is 6 and that the "Q from" value is 5, then the rule will provide an output. The "Q from" value can also be considered as a base value for the [[Metis_Smart_Modeling_-_Systems|system]] in which the [[Metis_Smart_Modeling_-_Models|model]] is used. |
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{{Warning | {{Warning | ||
| - | | [[Metis_Smart_Modeling_-_Attributes|Attributes]] do not hold any values in material models. | + | | [[Metis_Smart_Modeling_-_Attributes|Attributes]] do not hold any values in material [[Metis_Smart_Modeling_-_Models|models]]. |
}} | }} | ||
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One simple example to described the importance of planning in advance the structure of the rules within a group or the groups themselves is in the scope of the configuration of a computer the calculation of the memory modules required. One way to accommodate this situation is to let the user input the requested amount of memory he would like to have configured in his machine. | One simple example to described the importance of planning in advance the structure of the rules within a group or the groups themselves is in the scope of the configuration of a computer the calculation of the memory modules required. One way to accommodate this situation is to let the user input the requested amount of memory he would like to have configured in his machine. | ||
| - | The first rule will determine the number of 1 GB modules required to suit his needs. For example the input is 4 GB and the result is 4 modules of 1 GB each. The situation would be more complicated if the user had chosen 8 GB and that the machine could only hold 4 modules in total. This means that the model requires a second rule to check the number of 1 GB module against the number of slots available. In the example of a input equal to 8, the resulting number of modules is 8. The second rule could then take this value and modify the result to 2 GB modules thus making it possible to be installed on the machine. | + | The first rule will determine the number of 1 GB modules required to suit his needs. For example the input is 4 GB and the result is 4 modules of 1 GB each. The situation would be more complicated if the user had chosen 8 GB and that the machine could only hold 4 modules in total. This means that the [[Metis_Smart_Modeling_-_Models|model]] requires a second rule to check the number of 1 GB module against the number of slots available. In the example of a input equal to 8, the resulting number of modules is 8. The second rule could then take this value and modify the result to 2 GB modules thus making it possible to be installed on the machine. |
Because in this situation the second needs to have the result of the first one available in order to use it has an input it is necessary that second be placed in another group of rules which should be executed after the one containing the first rule. | Because in this situation the second needs to have the result of the first one available in order to use it has an input it is necessary that second be placed in another group of rules which should be executed after the one containing the first rule. | ||
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{{Note | {{Note | ||
| - | | On the main rule screen, listing all rules within a single group, they can be sorted. This functionality is only a visual help for the user. Based on the execution scheme of models, sorting rule within a group doesn't have any effect on the result of the group. If rule need to be executed a sequential order, then they should be placed in sequential groups. | + | | On the main rule screen, listing all rules within a single group, they can be sorted. This functionality is only a visual help for the user. Based on the execution scheme of [[Metis_Smart_Modeling_-_Models|models]], sorting rule within a group doesn't have any effect on the result of the group. If rule need to be executed a sequential order, then they should be placed in sequential groups. |
}} | }} | ||
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{{Note | {{Note | ||
| - | | If modifications are applied to a rule which is used in several groups, keep in mind that changes will be have an influence on all groups or models in which this rule is used. It may be relevant to make a copy of the rule in order to test the modifications. | + | | If modifications are applied to a rule which is used in several groups, keep in mind that changes will be have an influence on all groups or [[Metis_Smart_Modeling_-_Models|models]] in which this rule is used. It may be relevant to make a copy of the rule in order to test the modifications. |
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| - | To check in which groups of rules a rule is used (linked), select the rule for which a verification should be done and click on the "Currently used by" button [[File:MetisSmartModelingCurrentlyUsedByButton.PNG|link=]]. A window will open displaying all groups of rules, models and [[Metis_Smart_Modeling_-_Systems|systems]] to which the selected rule is linked. Please refer here for more information. | + | To check in which groups of rules a rule is used (linked), select the rule for which a verification should be done and click on the "Currently used by" button [[File:MetisSmartModelingCurrentlyUsedByButton.PNG|link=]]. A window will open displaying all groups of rules, [[Metis_Smart_Modeling_-_Models|models]] and [[Metis_Smart_Modeling_-_Systems|systems]] to which the selected rule is linked. Please refer here for more information. |
== Deleting a rule == | == Deleting a rule == | ||