Represents common expression object.
public abstract class Korzh.EasyQuery.EqExpression
Fields
| Type |
Name |
Description |
String |
text |
This field contains expression's text |
Properties
| Type |
Name |
Description |
String |
CustomFunc |
Gets the custom func for expression if defined |
DataType |
DataType |
Gets or sets the data type. |
String |
Hint |
Gets or sets the expression hint. |
Boolean |
IsAggregate |
Gets a value indicating whether this expression is aggregate. |
DataKind |
Kind |
Gets the expression kind. |
Type |
SystemType |
Gets the system type for this expreesion (it's used in LINQ query builder) |
String |
Text |
Gets or sets the expression text used for visual representation. |
String |
TypeName |
Non-static version of Korzh.EasyQuery.EqExpression.STypeName property. |
String |
Value |
Gets or sets the value of expression. |
Events
| Type |
Name |
Description |
EventHandler |
ContentChange |
This event is raised after expression was changed |
Methods
| Type |
Name |
Description |
void |
AssignExpr(EqExpression expr) |
Assigns some expression to this one. This method just does nothing in the base class but can perform some actions in Expression descendants. |
void |
ContentChanged() |
Invoke ContentChange event |
void |
LoadFromJsonDict(JsonDict dict) |
Loads expression from dictionary object (used when we load query from JSON). |
void |
LoadFromXmlReader(XmlReader reader) |
Loads expression from XML. |
void |
OnContentChange(EventArgs e) |
Raises the ContentChange event. |
void |
SaveToJsonDict(JsonDict dict) |
Saves expression's properties to dictionary (used to serialize expression into JSON) |
void |
SaveToJsonDictCore(JsonDict dict) |
Saves expression's properties to dictionary (used to serialize expression into JSON) This is an abstract method which should be overridden in descendant classes. |
void |
SaveToXmlWriter(XmlWriter writer, String tagName) |
Saves expression to XML writer. |
void |
SaveToXmlWriter(XmlWriter writer) |
Saves expression to XML writer. |
void |
SetContent(String val, String txt) |
Sets the content of the expression (both its value and text). |
void |
SetContentSilent(String val, String txt) |
Sets the content of the expression silently (without calling ContentChanged event). |
void |
WriteXmlTagStart(XmlWriter writer) |
Writes the expression XML tag start. |
void |
WriteXmlTagStart(XmlWriter writer, String tagName) |
Writes the expression XML tag start. |
Static Fields
| Type |
Name |
Description |
Dictionary<String, IExpressionCreator> |
Creators |
|
Static Properties
| Type |
Name |
Description |
String |
STypeName |
Gets the name of the expression type. |
String |
XmlTagName |
Gets the name of the XML tag used for representation of Expression (an all its descendants) object in XML files. |
Static Methods
| Type |
Name |
Description |
String |
ApplyCustomFunc(String func, String expr) |
Applies the custom function. |
EqExpression |
Create(String exprType, DataModel model) |
Creates the expression instance of specified type. |
Boolean |
RegisterType(String type, IExpressionCreator creator) |
Registers new type of expression. |
