Represents group of conditions linked by some logical operator (AND or OR).
public abstract class Korzh.EasyQuery.Predicate
: Condition
Fields
| Type |
Name |
Description |
Boolean |
_isRoot |
|
Properties
| Type |
Name |
Description |
ConditionsStore |
Conditions |
Gets the conditions. |
Boolean |
IsEmpty |
Gets a value indicating whether this predicate is empty (zero conditions). |
Boolean |
IsRoot |
Gets a value indicating whether this predicate is the root predicate in query. |
LinkType |
Linking |
Gets or sets the linking type. |
String |
LinkingStr |
Gets or sets the text representation of linking type. |
String |
TypeName |
Gets the name of the condition type. The same as STypeName but works for one particular instance of SimpleCondition class. |
Methods
| Type |
Name |
Description |
Predicate |
AddPredicate(LinkType lnkType) |
Creates and adds a new predicate into current |
SimpleCondition |
AddSimpleCondition(String attrId, String operatorId, String[] values) |
Adds a simple condition by attribute ID, operator ID and a list of values |
SimpleCondition |
AddSimpleCondition(EntityAttr attr, Operator op, EqExpression[] exprs) |
Adds a simple condition by attribute ID, operator ID and a list of values |
void |
BeginUpdate() |
Starts the update process. OnConditionsChanged event of corresponding Query object is not raised while condition is in update state |
void |
CheckIfEnabled() |
This procedure is called when Enable state in one of the child conditions was changed. |
Boolean |
ContainsGhosts(Condition& outCond) |
Determines whether this predicate contains a condition with a "ghost" attribute. |
void |
EndUpdate() |
Ends the update process. Raises ConditionsChange event if some modification(s) was(were) made during update process. |
Condition |
FindCondByAttr(EntityAttr attr) |
Finds the condition the by entity attribute set in the left part of this condition. |
Boolean |
GetHaving() |
Gets a value indicating whether this condition must be placed into HAVING clause in result SQL. |
Int32 |
GetOffspringCount() |
Gets the number of all offspings of the predicate |
String |
GetPredicateHeader() |
Gets the predicate header text. |
String |
GetText(QueryTextFormats formats, String levelSpace, String prefix) |
Returns text representation of condition |
IEnumerable<Entity> |
GetUsedEntities() |
Gets the list of entities that are used in conditions of this predicate. |
void |
LoadFromJsonDict(JsonDict dictPredicate) |
Loads condition from IDictionary. Used during loading query from JSON |
void |
LoadFromXmlReader(XmlReader reader) |
Loads Korzh.EasyQuery.Predicate properties from XML reader. |
void |
Reset() |
Clears the condition list and resets linking type |
void |
SaveToXmlWriter(XmlWriter writer) |
Saves root condition group object to XML writer, if the predicate is root. Otherwise calls inherited method. |
void |
SetEnabled(Boolean newValue) |
Sets the Enabled property. |
void |
SetQuery(Query newQuery) |
Sets the query object. |
void |
SetReadOnly(Boolean newValue) |
Sets the ReadOnly property. |
void |
WriteContent(XmlWriter writer) |
Writes the content of condition to XmlWriter object. |
void |
WriteSubNodesToXml(XmlWriter writer) |
Writes the sub codnitions to XML. |
Static Properties
| Type |
Name |
Description |
String |
STypeName |
Gets the name of the S class. |
