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Difference between revisions of "QUERYITEM"


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A QueryItem defines a single filter rule for the evaluation of the result collection of a [[Query]]. This filter rule has the followig parameters:
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A QueryItem defines a single filter rule for the evaluation of the result collection of a [[Query]]. This filter rule has the following parameters related to filtering:
{| class="wikitable sortable"
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{| class="wikitable sortable" style="width:70%"
 
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! Parameter !! DataType !! Example(s) !! Comment
 
! Parameter !! DataType !! Example(s) !! Comment
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|-
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| NAME || {{Text}} || Any || Name of MetaProperty the filter values should be searched in
 
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| OPERATOR || {{Text}} || =,<,>,>=,<= || value must correspond to an item of the QuerySearchItemOperator enumeration
 
| OPERATOR || {{Text}} || =,<,>,>=,<= || value must correspond to an item of the QuerySearchItemOperator enumeration
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| FILTERVALUE|| {{Text}} || Any || the value the objects are compared to  
 
| FILTERVALUE|| {{Text}} || Any || the value the objects are compared to  
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|-
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| INDEX || {{Integer}} || Any || property has index values and filtering should consider a certain index
 
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| ISNULL|| {{Boolean}} || true / false|| searched for NULL values
 
| ISNULL|| {{Boolean}} || true / false|| searched for NULL values

Revision as of 10:39, 24 March 2015

IC METACLASS.gif Query Item
Name QUERYITEM
Namespace System.Query
Internal Name SystemObjects.QUERYITEM
TypeString UBIK.Kernel.MetaClass
RuntimeType UBIK.Kernel.QueryItem
Purpose Configure query items
Version 2+


A QueryItem defines a single filter rule for the evaluation of the result collection of a Query. This filter rule has the following parameters related to filtering:

Parameter DataType Example(s) Comment
NAME Text Any Name of MetaProperty the filter values should be searched in
OPERATOR Text =,<,>,>=,<= value must correspond to an item of the QuerySearchItemOperator enumeration
LIKECOMPARISON Boolean true / false if true, the given item is applied as LIKE filter criteria where a wildcard is automatically added to the end of the filtervalue; for an additional wildcard at the beginning of the filter value add *
FILTERVALUE Text Any the value the objects are compared to
INDEX Integer Any property has index values and filtering should consider a certain index
ISNULL Boolean true / false searched for NULL values
LOGICALAND Boolean true / false if true, the given QueryItem and its predecessor are logically joined using AND; otherwise using OR

See also