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--- en:variable_management [2019/01/25 10:49]
tast [Validations in Frontend of the data types:]
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-====== Variable Management in TAST ======
-{{:TAST-icon.png?nolink&70|}}
-This is the information about how to use and manage the variables in TAST.
-===== Validations in Frontend of the data types: =====
-The web application should prevent situations like this:
-==== Using more than one data type for the same variable ====
-Can another type of data be assigned to the same variable?  Yes, there is no need or impediment to be rigid.
-==== Using colors in messages that declare variables ====
-In this way, the user could at a simple glance understand that the variable he has used is not the same type of data as the variable he is declaring.
-==== Introduction of specific controls associated with variables ====
-   *In a setVariable, depending on the type of data selected, show:
-   *TastDataBoolean: checkbox.
-   *TastDataInteger: text input that allows you to enter only numbers (without a comma, no points) or Integer variables.
-   *TastDataString: n.a
-   *TastDataDouble: text input that allows to enter only numbers or variables of type Integer or Double.
-   *TastDataDate: text input with calendar. It allows to enter variables of type TastDataDate. You must validate the date before saving.
-===== Validations in Backend =====
-Text.
-==== List of Casting allowed / not allowed in TAST ====
-^From/To ^String^Boolean^Integer^Double^Date^ Table^
-|String|Don't Apply|Assigns a Boolean object that represents the true value if the String is not null and is equal, ignoring case, to the "true" string.| Returns Integer if String is a number. If it is a number like 100.00, everything that comes behind the point is deleted. If it is not number it throws exception.|Returns Double if String is a number. If it is not a number, it throws an exception.|Returns Date if String is date. If it is not a date, or does not find the format, it throws an exception.|Returns a table with a column, and a row with the string.If the string is separated by comma, or semicolon, we create as many columns as commas.|
-|Boolean|Returns what the getStringValue () function returns;|Don’t Apply|Returns 1 if it is true and 0 if it is false|Returns 1.00 if true, and 0.00 If it is false|Exception. Not allowed.|Returns a table with a column, and a row with the boolean|
-|Integer|Returns what the getStringValue () function returns;|Returns true if it is a number greater than 0, and false if it is null or 0|Don’t Apply|Returns the integer with .00|Exception. Not allowed.|Returns a table with a column, and a row with the Integer|
-|Double|Returns what the getStringValue () function returns;|Returns true if it is a number greater than 0, and false if it is null or 0|Returns an Integer (e.g. 5.25 -> 5)|Don’t Apply|Exception. Not allowed.|Returns a table with a column, and a row with the Double|
-|Date|Returns what the getStringValue () function returns;|Exception. Not allowed.|Exception. Not allowed.|Exception. Not allowed.|Don’t Apply|Returns a table with a column, and a row with the Date|
-|Table\\ see the 3-rd chapter “Additional information about Variables in TAST”|Returns what the getStringValue () function returns;|Exception. Not allowed.|Exception. Not allowed.|Exception. Not allowed.|Exception. Not allowed.|Don’t Apply|
-===== Additional information about Variables in TAST =====
-You should consider this information: In the application there are new data types that are not displayed in the frontend, but internally are being used by TAST. They will be available soon as a part of the new adaptors we are currently building:
-   *TastRowTableData
-   *TastIterateTableData
-   *TastTableCell
-   *Variant
-   *Collection
-   *Lists
-In setVariable, there are data types that cannot be entered for the moment:
-   *TastRowValues
-   *TastHttpResponse
-   *TastHtmlTable
-   *TastTableDate
-   *Variant
-   *Collection
-   *Lists

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