Metis Smart Modeling - Models

All positions listed through the use of models will be in read only mode. Metis Smart Quote allows, however, editing the list by adding '''manual positions'''. All parameters related to them can be manually set, like quantity and [[Description_of_the_Menu_Attributes|attributes]].

Now that the ground work of the model concept is laid down, it is necessary to understand a bit how such a model works in the Metis environment. As described in figure [[:File:Model_Exec_1.png|Model execution overview]], outside of the masks, a model is built on specific objects. Each model includes at least one “group of rules”, which is a container for individual rules. Those rules are the logic part of the models. Each rule uses input values ([[Metis_Smart_Modeling_-_Variables|variables]], [[Description_of_the_Menu_Attributes|attributes]], positions) coming from the masks, default or calculated information to process a logic “formula”. A Group of rule can include as many rules as necessary, with the only constrain that the result of a given rule will only be available in the next group of rules in the process. As described in figure [[:File:Model_Exec_2.png|Group of rules execution overview]], a Group of rules feeds on input values which are instantiated before its execution. Once inside, all rules will use those values to process the formulas. When all rules are processed, the resulting [[Metis_Smart_Modeling_-_Variables|variables]] and/or material positions are prepared for the next Group of rules.Before starting the execution of the next Group of rules, the engine instantiates the new input values and lets the various rules included in the group feed on them.  

Usually those models will use the [[Description_of_the_Menu_Attributes|attributes]] and position quantities to calculate the required service items. In the displayed list, each of the positions may have [[Description_of_the_Menu_Attributes|attribute]] values linked to it. For example, a printer defines a time which is required to install its drivers on the host computer(s). These times will then be processed by the model and generate an additional position which will add up all those times and insert the installation service in the offer.