You are viewing the documentation for Blueriq 13. Documentation for other versions is available in our documentation directory.
What is it?
An attribute is a property of an entity. Every attribute is of a specific data type. For example the entity Person can have attributes like: Name (type: string), Gender (type: Boolean) and Date of birth (type: Date).
An attribute can:
- have its values be limited to values specified in a value list (see Value list)
- have multiple values (be multi-valued)
- have a default value
- can have an associated set of unit tests
How does an attribute get a value
An attribute can get a value through logic, or it can be set by the user, a service, a function flow or a web service.
When the value is derived through logic, a business rule, decision table or data rule determines the value of the attribute. The value is usually dependent on values of other attributes. When an attribute gets a value in this way we say that the value is "system set". A system set value is only determined when the value is necessary, for example when it is shown on a page or used as input for a service.
The value can also be set explicitly by the user. We call this value "user set". This is the case when the value is filled in on a page. Other ways to make give an attribute a user set value is through the use of a service. This also covers other situations like the use of a web service or a function flow. When an attribute has a user set value, this value will be fixed until the value is cleared, or another value is explicitly set.
How to – define an attribute
- Select the Home tab
- From the Domain group select the Attribute icon
- Choose the corresponding Entity
- Fill in the required fields and tick or uncheck the necessary boxes
- Click Save or Save & close
Properties
Property | Description |
|---|---|
 | Go to unit test overview for this attribute. |
| Go to the Decision Requirements Graph for this attribute. |
| Entity | Choose the entity the attribute belongs to. It is possible to create an entity while creating an attribute by clicking on the icon Create new entity. |
| Name | Identifies the attribute. Only letters, numbers and underscores (_) are allowed. The name should start with a letter or an underscore. The maximum length of the name is determined by a database setting |
| Askable | Tick this box in case the value of the attribute can be given by the user. If an attribute is not askable, the value of the attribute has to be derived. The askable property of an attribute is only used in the evaluation of decision trees. |
| Functional name | Optional, can be used in documentation |
| Type | Choose type of attribute. The options are: boolean, String, Number, Date, DateTime, Percentage, Currency, Integer |
| Acts as Reference | Not implemented Note that the implementation for "Acts a reference" has not been available since Blueriq 10.0. Checking the tick box will not give an error, but will not have any effect either. Check this box if the value of the attribute is a reference to an aggregate (version), document, case or task. This affects the way full-text search handles the value of the attribute. See Search in structured and unstructured information. When checked, the Value list and Default Value section disappear and you can choose to what this attribute refers. It can refer to an aggregate id, aggregate version, task id or process id if the attribute is an integer, or to a document id if the attribute is a string. When referring to a document, you can also provide the connection name in which this is stored. |
| Multi-valued | Tick this box in case the attribute needs to be a multivalued attribute . It can then have more than one value. |
| Value list | A Value list is a drop down menu of possible values an attribute can have. Tip: create a value list on the fly When the value list is not yet created it is possible to create it whilst creating an attribute by clicking on the icon create new value list. |
| Description | Is optional, but recommended. |
| Default value | The initial value of an attribute is set by the default type in combination with the default value. The choices are: None, Constant, Expression, Decision table, External.The default type “None” cannot be combined with a default value e.g. no initial value will be set. For the other default types you can fill in the associated default value which will derive the initial attribute value.
Be aware that a decision table as a default value will not be used in the derivation process, it is only used in case no logic can be found to find a value. It then will use this decision table as fallback. The derived value must be of the same type as the base type |
| Question | When the attribute is used on a page, this text will be shown to the user. You can fill in a text for every language of your project. The double arrow down indicates that another language has been filled in as well, and you should not forget to update that one as well when you change the text. The question text can contain TSL |
| Explain | You can fill in a text for every language of your project. The double arrow down right next to the selected language indicates that another language has been filled in as well, and you should not forget to update that one as well when you change the text. The explanation text can contain TSL |
| Validation rule | Choose one or more Validation rule. Validations check the correctness of the input for that attribute at run-time. A validation rule can be selected from the drop-down list, or created in-place. Validation rules can also be added to an attribute by dragging and dropping. |
| Validation type | Is a standard validation rule you can create within the attribute. The following validation types are available:
Please see Validation types. |
Attribute Types: boolean, string, number, date, datetime, percentage, currency, integer
The Data type field is used to set the data type of an attribute.
| Data type | Description |
|---|---|
| Boolean | Contains a boolean TRUE or FALSE value, or UNKNOWN |
| String | Contains a text string of max. 500 characters |
| Number | Contains a numerical value |
| Date | Contains a date. The format depends on the locale of the application server |
| Datetime | Contains a date and time. The format depends on the locale of the application server |
| Percentage | Contains a numerical value, representing a percentage. Note that that a value of a percentage is treated just like any number. the percentage is mainly used for presentation, in mathematical operations the percentage acts the same as a Number. If you want a percentage attribute to act as a percentage in a multiplication (i.e., 25 % * 80 = 20) , you have to divide the result by 100. |
| Currency | Contains a numerical value, representing a currency |
| Integer | Contains an integer value |
For the numerical types (Number/Percentage/Currency/Integer), there are rules which mathematical operations can be applied between attributes of the same or different type. See Expression function reference.
Overview
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1 Comment
Bart Zantingh
How many decimals do number type attributes support, at maximum?
And are currency attributes always in Euros?