TDADateTimeTodayExpression
Overview
The TDADateTimeTodayExpression class represents the current database server date in Dynamic Where expressions.
Location
- Unit: uDAWhere.pas
- Ancestry: TDAWhereExpression | TDADateTimeTodayExpression
AsJson (declared in TDAWhereExpression)
Returns where expression in Json format
function AsJson: UnicodeString
AsXML (declared in TDAWhereExpression)
Returns where expression in XML format
function AsXML: UnicodeString
DoValidate protected (declared in TDAWhereExpression)
Raised exception if aRaiseException
is set
procedure DoValidate(aRaiseException: Boolean; aName: string)
Parameters:
- aRaiseException: specifies should the exception be raised or not.
- aName: Name of property
Kind (declared in TDAWhereExpression)
Specified kind of TDAWhereExpression
property Kind: TDAWhereKind read
ParseException protected (declared in TDAWhereExpression)
Raises EDAWhereParseXmlException.
procedure ParseException(aName: string)
Parameters:
- aName: property name.
ParseExpression (TROJSONObject, string): TDAWhereExpression protected overload (declared in TDAWhereExpression)
Creates new Where expression from Json object.
function ParseExpression(aItem: TROJSONObject; aName: string): TDAWhereExpression
Parameters:
- aItem: Json object
- aName: Name of property
ParseExpression (IXmlNode, string): TDAWhereExpression protected overload (declared in TDAWhereExpression)
Creates new Where expression from XML node.
function ParseExpression(xr: IXmlNode; aName: string): TDAWhereExpression
Parameters:
- xr: source node.
- aName: Name of property
ParseExpression (TROJSONObject): TDAWhereExpression overload (declared in TDAWhereExpression)
Creates new Where expression from Json object.
class function ParseExpression(anItem: TROJSONObject): TDAWhereExpression
Parameters:
- anItem: json object
ParseExpression (IXmlNode): TDAWhereExpression overload (declared in TDAWhereExpression)
Creates new Where expression from XML node.
class function ParseExpression(xr: IXmlNode): TDAWhereExpression
Parameters:
- xr: given XML node.
ReadFromJson override
Reads where expression from the Json.
procedure ReadFromJson(aItem: TROJSONObject)
Parameters:
- aItem: Json object
ReadFromXml override
Reads where expression from the XML.
procedure ReadFromXml(xr: IXmlNode)
Parameters:
- xr: source node
RemoveEmptyNodes (declared in TDAWhereExpression)
Removes empty XML nodes from given node
class procedure RemoveEmptyNodes(aNode: IXMLNode)
Parameters:
- aNode: node
Validate virtual (declared in TDAWhereExpression)
Validates properties of expression.
procedure Validate
WriteToJson override
Writes where expression to the Json object.
procedure WriteToJson(aItem: TROJSONObject)
Parameters:
- aItem: destination object
WriteToXml override
Writes where expression to the XML node.
procedure WriteToXml(sw: IXmlNode)
Parameters:
- sw: destination node
Kind (declared in TDAWhereExpression)
Specified kind of TDAWhereExpression
property Kind: TDAWhereKind read
ParseExpression (TROJSONObject): TDAWhereExpression overload (declared in TDAWhereExpression)
Creates new Where expression from Json object.
class function ParseExpression(anItem: TROJSONObject): TDAWhereExpression
Parameters:
- anItem: json object
ParseExpression (IXmlNode): TDAWhereExpression overload (declared in TDAWhereExpression)
Creates new Where expression from XML node.
class function ParseExpression(xr: IXmlNode): TDAWhereExpression
Parameters:
- xr: given XML node.
RemoveEmptyNodes (declared in TDAWhereExpression)
Removes empty XML nodes from given node
class procedure RemoveEmptyNodes(aNode: IXMLNode)
Parameters:
- aNode: node
AsJson (declared in TDAWhereExpression)
Returns where expression in Json format
function AsJson: UnicodeString
AsXML (declared in TDAWhereExpression)
Returns where expression in XML format
function AsXML: UnicodeString
DoValidate protected (declared in TDAWhereExpression)
Raised exception if aRaiseException
is set
procedure DoValidate(aRaiseException: Boolean; aName: string)
Parameters:
- aRaiseException: specifies should the exception be raised or not.
- aName: Name of property
ParseException protected (declared in TDAWhereExpression)
Raises EDAWhereParseXmlException.
procedure ParseException(aName: string)
Parameters:
- aName: property name.
ParseExpression (TROJSONObject, string): TDAWhereExpression protected overload (declared in TDAWhereExpression)
Creates new Where expression from Json object.
function ParseExpression(aItem: TROJSONObject; aName: string): TDAWhereExpression
Parameters:
- aItem: Json object
- aName: Name of property
ParseExpression (IXmlNode, string): TDAWhereExpression protected overload (declared in TDAWhereExpression)
Creates new Where expression from XML node.
function ParseExpression(xr: IXmlNode; aName: string): TDAWhereExpression
Parameters:
- xr: source node.
- aName: Name of property
ReadFromJson override
Reads where expression from the Json.
procedure ReadFromJson(aItem: TROJSONObject)
Parameters:
- aItem: Json object
ReadFromXml override
Reads where expression from the XML.
procedure ReadFromXml(xr: IXmlNode)
Parameters:
- xr: source node
Validate virtual (declared in TDAWhereExpression)
Validates properties of expression.
procedure Validate
WriteToJson override
Writes where expression to the Json object.
procedure WriteToJson(aItem: TROJSONObject)
Parameters:
- aItem: destination object
WriteToXml override
Writes where expression to the XML node.
procedure WriteToXml(sw: IXmlNode)
Parameters:
- sw: destination node