Changes

Offline Query (UBIK WinX)

3,363 bytes added, 15:29, 8 November 2017
* Only local objects can be found as query results (for obvious reasons).
== Offline query page ==An offline query page looks similar to a regular content page which shows the properties on the left side and the content objects on the right.The unique characteristics of a query page are:* The properties on the left serve as query criteria;* The content objects on the right are the evaluated results of the query;* There is an additional {{key press|Evaluate}} button in the bottom-left corner;Users can change the query criteria by editing the property values.A press on the {{key press|Evaluate}} button then will re-evaluate the query and show the results on the right side. Under construction  == Offline query criteria ==An offline query criterion is essentially a property on the query object.When evaluating a query, every criterion/property is checked against all result candidates (See ).A candidate is a match if* it has all the same properties as the offline query;* and the values of these properties indicate they are relevant according to the query criteria. (Some types have different ways to interpret what makes a value relevant. See below.){{Hint|The value checking of a criterion is ignored during query evaluations under any of the following circumstances.* The criterion does not have any value specified;* The criterion type is not supported/unknown. (See below)}} Several types of criteria are supported on offline queries.{| class="wikitable" | width ="50%"|-! !! Boolean !! String !! Integer !! Double !! DateTime !! Guid|- align="center"| Single Value || ✓ || ✓ || ✓ || ✓ || ✓ || ✓|- align="center"| Value Range || || || ✓ || ✓ || ✓ || |}=== Single value criterion ===For most single value criteria, {{UBIK}} considers a candidate as a match if the value of the target property equals the value specified in the criterion.{{Hint|It is possible to use a single DateTime value in a query criterion. However, since even the smallest differences (in seconds or even milliseconds) matter during an equality check, you might want to consider specifying a range instead.}} === String criterion ===For string criteria, instead of checking for the equality, {{UBIK}} does the following.* Split the string value defined in a criterion by spaces ({{Code| }}) if possible;* As long as at least one of the sub strings is a part of the string value of the target property, the candidate is a match.For example, candidate objects with names {{Code|PU112}} and {{Code|PD2115}} are both considered as matches under a name criterion with the value {{Code|PU PD}}. === Value range criterion ===For types such as numbers or dates, it is sometimes more comfortable to specify ranges for criteria.* Example 1: Candidate objects with pressure readings {{Code|20}} and {{Code|25}} are both considered as matches under a pressure reading criterion with the value {{Code|20 ⩽ ... ⩽ 25}}.* Example 2: Candidate objects with start dates {{Code|09-11-2017}} and {{Code|08-12-2017}} are both considered as matches under a start date criterion with the value {{Code|> 08-11-2017}}.  Currently, the following ranges are supported.* exclusive between (... < value < ...);* exclusive greater than (value > ...);* exclusive less than (value < ...);* inclusive between (... ⩽ value ⩽ ...);* inclusive greater than (value ⩾ ...);* inclusive less than (value ⩽ ...). == Technical background ==... Under construction ...
[[Category:Version 3.1|Offline Query (UBIK WinX)]]
[[Category:WinX|Offline Query (UBIK WinX)]]