| FieldCompareSetPredicate Class |
Implementation of a Field compare-operator Set expression, using the following format:
IEntityField(Core) ComparisonOperator (Subquery)
Inheritance HierarchySystemObject
SD.LLBLGen.Pro.ORMSupportClassesPredicate
SD.LLBLGen.Pro.ORMSupportClassesFieldCompareSetPredicate
SD.LLBLGen.Pro.ORMSupportClassesPredicate
SD.LLBLGen.Pro.ORMSupportClassesFieldCompareSetPredicate
Namespace: SD.LLBLGen.Pro.ORMSupportClasses
Assembly: SD.LLBLGen.Pro.ORMSupportClasses (in SD.LLBLGen.Pro.ORMSupportClasses.dll) Version: 5.2.0.0 (5.2.17.0403)
SyntaxThe FieldCompareSetPredicate type exposes the following members.
ConstructorsTop
Properties| Name | Description | |
|---|---|---|
 | AllowDuplicatesInSubQuery |
Gets or sets a value indicating whether duplicates are allowed (true, default) in the subquery or not (false).
On most databases this has no effect, but on e.g. Oracle it can be beneficial to specify false (which emits DISTINCT)
to force the optimizer to use an index, if applicable.
|
| DatabaseSpecificCreator |
Object which will be used to create valid parameter objects, field names, including prefix/postfix characters,
and conversion routines, and field names, including prefix/postfix characters.
Uses the strategy pattern so the generic code can work with more than one target database.
(Inherited from Predicate.) |
| Field |
Field used in the comparison expression (SelfServicing).
|
| FieldCore |
Field used in the comparison expression (IEntityFieldCore).
|
| GroupByClause |
Gets / sets the groupByClause for this FieldCompareSetPredicate instance
|
| InstanceType |
The PredicateType of this instance. Used to determine the instance nature without a lot of casting.
(Inherited from Predicate.) |
| MaxNumberOfItemsToReturn |
Gets / sets maxNumberOfItemsToReturn for the subquery. Default: 0 (return all rows)
|
| Negate |
Flag for setting the Predicate to negate itself, i.e. to add 'NOT' to its result.
(Inherited from Predicate.) |
| ObjectAlias |
Alias for the object the field belongs to. Used to identify which entity to use when the entity
is present multiple times in a relation collection. Alias has to match an alias specified in the relation collection or should be
left empty if no alias is specified (or no relation collection is used).
(Inherited from Predicate.) |
| OperatorToUse |
Operator to use in the comparison
|
| Parameters |
The list of parameters created when the Predicate was translated to text usable in a query. Only valid after a succesful call to ToQueryText
(Inherited from Predicate.) |
| PersistenceInfoField |
Gets / sets persistenceInfo for field
|
| PersistenceInfoSetField |
Gets / sets persistenceInfo for Setfield
|
| SetField |
Field used in the subquery (the field the set is of) (SelfServicing).
|
| SetFieldCore |
Field used in the subquery (the field the set is of) (SelfServicing).
|
| SetFilter |
Gets / sets the filter to use in the subquery
|
| SetFilterAsPredicateExpression |
Wraps SetFilter in an IPredicateExpression instance
|
| SetRelations |
Gets / sets the set relations to use in the subquery.
|
| SetSorter |
Gets / sets the setSorter expression to order the subquery results. Use it in combination with MaxNumberOfItemsToReturn set to 1
|
Methods| Name | Description | |
|---|---|---|
 | Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetFrameworkElementsInPredicate |
Gets a list of all framework objects (fields, expression objects etc.) which are located in this IPredicate instance. E.g. a
FieldCompareValuePredicate will return a list with 1 IEntityFieldCore instance: the field to compare. If no framework elements are present in the
predicate, the base implementation is used, which returns an empty list. This routine is used to gather information for Linq queries.
(Overrides PredicateGetFrameworkElementsInPredicate.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| InterpretPredicate |
Interprets this predicate on the passed in entity
(Inherited from Predicate.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ReadAdditionalXmlData |
Reads the additional a derived type has from the reader's XML data. The reader is positioned at the 'predicate' element.
(Overrides PredicateReadAdditionalXmlData(XmlReader).) |
| ToQueryText |
Implements the IPredicate ToQueryText method. Retrieves a ready to use text representation of the contained Predicate.
(Overrides PredicateToQueryText.) |
| ToQueryText(Boolean) |
Retrieves a ready to use text representation of the contained Predicate.
(Overrides PredicateToQueryText(Boolean).) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| WriteAdditionalXmlData |
Writes the additional data a derived type has to the writer specified.
(Overrides PredicateWriteAdditionalXmlData(XmlWriter).) |
Explicit Interface Implementations| Name | Description | |
|---|---|---|
  | IXmlSerializableGetSchema |
This method is reserved and should not be used. When implementing the IXmlSerializable interface, you should return null (Nothing in Visual Basic) from this method, and instead, if specifying a custom schema is required, apply the XmlSchemaProviderAttribute to the class.
(Inherited from Predicate.) |
| IXmlSerializableReadXml |
Generates an object from its XML representation.
(Inherited from Predicate.) |
| IXmlSerializableWriteXml |
Converts an object into its XML representation.
(Inherited from Predicate.) |
| IPredicateReadXml |
Deserializes the predicate data on the xml reader into a predicate instance
(Inherited from Predicate.) |
| IPredicateWriteXml |
Serializes the predicate as xml to the writer specified.
(Inherited from Predicate.) |
| IPredicateInterpretInterpret |
Interprets the implementing class on the entity passed in.
(Inherited from Predicate.) |
RemarksIf the operator EXISTS is used, the field is ignored so can be set to null/Nothing, as the predicate will simply
result in EXISTS (SELECT setField FROM ...)
This predicate isn't supported for in-memory filtering. Use FieldCompareRange for that.
This predicate isn't supported for in-memory filtering. Use FieldCompareRange for that.
See Also