DateTimePartExpression

Overview

The DateTimePartExpression class represents a call to the SQL function that extracts a part of given date like year, month etc in Dynamic Where expressions.

Date parts that can be extracted:

 
Year Month Week Day Hour Minute Second

Location

 

constructor

 

constructor

 

DateTimePartExpression()

constructor (WhereExpression, DateTimePart)

 

constructor(expression: WhereExpression; part: DateTimePart)

 

DateTimePartExpression(WhereExpression expression, DateTimePart part)

Parameters:

  • expression:
  • part:

Creates a new BinaryExpression from the given aLeft and aRight operands using BinaryOperator.

 

class method combine(aLeft: WhereExpression; aRight: WhereExpression): WhereExpression

 

static WhereExpression combine(WhereExpression aLeft, WhereExpression aRight)

Parameters:

  • aLeft: The left operand to be combined.
  • aRight: The right operand to be combined.

Creates a new BinaryExpression from the given aLeft and aRight operands using the given operator.

 

class method combine(aLeft: WhereExpression; aRight: WhereExpression; anOperator: BinaryOperator): WhereExpression

 

static WhereExpression combine(WhereExpression aLeft, WhereExpression aRight, BinaryOperator anOperator)

Parameters:

  • aLeft: The left operand to be combined.
  • aRight: The right operand to be combined.
  • anOperator: The operator to be used in combining.

Expression

Expression

 

property Expression: WhereExpression read write;

 

WhereExpression Expression { __get; __set; }

fromString    (declared in WhereExpression)

Creates a new WhereExpression from the specified string, which should contain XML node in the correct Dynamic Where XML Format.

 

class method fromString(anXml: String): WhereExpression

 

static WhereExpression fromString(String anXml)

Parameters:

  • anXml: The given XML string.

fromStringToSql    (declared in WhereExpression)

A helper method to convert a XML string into SQL string.

 

class method fromStringToSql(anXml: String): String

 

static String fromStringToSql(String anXml)

Parameters:

  • anXml: The XML string to be converted.

fromXmlNode    (declared in WhereExpression)

Creates a new WhereExpression from the given XML node, which should be in the correct Dynamic Where XML Format.

 

class method fromXmlNode(aNode: Node): WhereExpression

 

static WhereExpression fromXmlNode(Node aNode)

Parameters:

  • aNode: The XML node to be parsed.

Kind

 

property Kind: WhereKind read;

 

WhereKind Kind { __get; }

parseExpression    (declared in WhereExpression)

 

class method parseExpression(node: Node): WhereExpression

 

static WhereExpression parseExpression(Node node)

Parameters:

  • node:

Part

Part of date or time

 

property Part: DateTimePart read write;

 

DateTimePart Part { __get; __set; }

readFromXml (Node)    (declared in WhereExpression)

Abstract method that should fill the descendants of WhereExpression from the given xml node, that should be in the correct Dynamic Where XML Format.

 

method readFromXml(aNode: Node)

 

void readFromXml(Node aNode)

Parameters:

  • aNode: The XML node to be parsed.

readFromXml (Node)

 

method readFromXml(node: Node)

 

void readFromXml(Node node)

Parameters:

  • node:

toSqlString    (declared in WhereExpression)

A helper method that wraps the similar one with the string builder and returns a SQL string.

 

method toSqlString: String

 

String toSqlString()

toSqlString (StringBuilder)    (declared in WhereExpression)

Creates an SQL representation of thу current where expression instance and appends it to the provided StringBuilder.

 

method toSqlString(aDestination: StringBuilder)

 

void toSqlString(StringBuilder aDestination)

Parameters:

  • aDestination: The destination string builder to be appended.

toSqlString (StringBuilder)

 

method toSqlString(buffer: StringBuilder)

 

void toSqlString(StringBuilder buffer)

Parameters:

  • buffer:

toString    (declared in WhereExpression)

Returns a SQL string representation of the current expression.

 

method toString: String

 

String toString()

toXmlNode    (declared in WhereExpression)

Creates a query node (in the Dynamic Where XML Format) from the current expression.

 

method toXmlNode: Node

 

Node toXmlNode()

toXmlString    (declared in WhereExpression)

Creates the query node (in the Dynamic Where XML Format) from current expression and returns it in the string format.

 

method toXmlString: String

 

String toXmlString()

validate    (declared in WhereExpression)

Validates the current expression with the WhereValidator and returns TRUE if it contains no errors. The main purpose of the validation is to scan all objects of WhereExpession tree and make sure that they contain correct field names.

 

method validate: Boolean

 

Boolean validate()

validate (WhereExpression): Boolean    (declared in WhereExpression)

Validates the provided WhereExpression with the WhereValidator and returns TRUE if it contains no errors. The main purpose of the validation is to scan all objects of WhereExpession tree and make sure that it contains correct field names.

 

class method validate(anExpression: WhereExpression): Boolean

 

static Boolean validate(WhereExpression anExpression)

Parameters:

  • anExpression: The expression to be validated.

writeToXml (Node)    (declared in WhereExpression)

Abstract method. In descendants creates where node (in the Dynamic Where XML Format) from WhereExpression.

 

method writeToXml(aNode: Node)

 

void writeToXml(Node aNode)

Parameters:

  • aNode: The given parent XML node.

writeToXml (Node)

 

method writeToXml(node: Node)

 

void writeToXml(Node node)

Parameters:

  • node:

 

Expression

Expression

 

property Expression: WhereExpression read write;

 

WhereExpression Expression { __get; __set; }

Kind

 

property Kind: WhereKind read;

 

WhereKind Kind { __get; }

Part

Part of date or time

 

property Part: DateTimePart read write;

 

DateTimePart Part { __get; __set; }

 

Creates a new BinaryExpression from the given aLeft and aRight operands using BinaryOperator.

 

class method combine(aLeft: WhereExpression; aRight: WhereExpression): WhereExpression

 

static WhereExpression combine(WhereExpression aLeft, WhereExpression aRight)

Parameters:

  • aLeft: The left operand to be combined.
  • aRight: The right operand to be combined.

Creates a new BinaryExpression from the given aLeft and aRight operands using the given operator.

 

class method combine(aLeft: WhereExpression; aRight: WhereExpression; anOperator: BinaryOperator): WhereExpression

 

static WhereExpression combine(WhereExpression aLeft, WhereExpression aRight, BinaryOperator anOperator)

Parameters:

  • aLeft: The left operand to be combined.
  • aRight: The right operand to be combined.
  • anOperator: The operator to be used in combining.

fromString    (declared in WhereExpression)

Creates a new WhereExpression from the specified string, which should contain XML node in the correct Dynamic Where XML Format.

 

class method fromString(anXml: String): WhereExpression

 

static WhereExpression fromString(String anXml)

Parameters:

  • anXml: The given XML string.

fromStringToSql    (declared in WhereExpression)

A helper method to convert a XML string into SQL string.

 

class method fromStringToSql(anXml: String): String

 

static String fromStringToSql(String anXml)

Parameters:

  • anXml: The XML string to be converted.

fromXmlNode    (declared in WhereExpression)

Creates a new WhereExpression from the given XML node, which should be in the correct Dynamic Where XML Format.

 

class method fromXmlNode(aNode: Node): WhereExpression

 

static WhereExpression fromXmlNode(Node aNode)

Parameters:

  • aNode: The XML node to be parsed.

parseExpression    (declared in WhereExpression)

 

class method parseExpression(node: Node): WhereExpression

 

static WhereExpression parseExpression(Node node)

Parameters:

  • node:

validate (WhereExpression): Boolean    (declared in WhereExpression)

Validates the provided WhereExpression with the WhereValidator and returns TRUE if it contains no errors. The main purpose of the validation is to scan all objects of WhereExpession tree and make sure that it contains correct field names.

 

class method validate(anExpression: WhereExpression): Boolean

 

static Boolean validate(WhereExpression anExpression)

Parameters:

  • anExpression: The expression to be validated.

 

constructor

 

constructor

 

DateTimePartExpression()

constructor (WhereExpression, DateTimePart)

 

constructor(expression: WhereExpression; part: DateTimePart)

 

DateTimePartExpression(WhereExpression expression, DateTimePart part)

Parameters:

  • expression:
  • part:

readFromXml (Node)    (declared in WhereExpression)

Abstract method that should fill the descendants of WhereExpression from the given xml node, that should be in the correct Dynamic Where XML Format.

 

method readFromXml(aNode: Node)

 

void readFromXml(Node aNode)

Parameters:

  • aNode: The XML node to be parsed.

readFromXml (Node)

 

method readFromXml(node: Node)

 

void readFromXml(Node node)

Parameters:

  • node:

toSqlString    (declared in WhereExpression)

A helper method that wraps the similar one with the string builder and returns a SQL string.

 

method toSqlString: String

 

String toSqlString()

toSqlString (StringBuilder)    (declared in WhereExpression)

Creates an SQL representation of thу current where expression instance and appends it to the provided StringBuilder.

 

method toSqlString(aDestination: StringBuilder)

 

void toSqlString(StringBuilder aDestination)

Parameters:

  • aDestination: The destination string builder to be appended.

toSqlString (StringBuilder)

 

method toSqlString(buffer: StringBuilder)

 

void toSqlString(StringBuilder buffer)

Parameters:

  • buffer:

toString    (declared in WhereExpression)

Returns a SQL string representation of the current expression.

 

method toString: String

 

String toString()

toXmlNode    (declared in WhereExpression)

Creates a query node (in the Dynamic Where XML Format) from the current expression.

 

method toXmlNode: Node

 

Node toXmlNode()

toXmlString    (declared in WhereExpression)

Creates the query node (in the Dynamic Where XML Format) from current expression and returns it in the string format.

 

method toXmlString: String

 

String toXmlString()

validate    (declared in WhereExpression)

Validates the current expression with the WhereValidator and returns TRUE if it contains no errors. The main purpose of the validation is to scan all objects of WhereExpession tree and make sure that they contain correct field names.

 

method validate: Boolean

 

Boolean validate()

writeToXml (Node)    (declared in WhereExpression)

Abstract method. In descendants creates where node (in the Dynamic Where XML Format) from WhereExpression.

 

method writeToXml(aNode: Node)

 

void writeToXml(Node aNode)

Parameters:

  • aNode: The given parent XML node.

writeToXml (Node)

 

method writeToXml(node: Node)

 

void writeToXml(Node node)

Parameters:

  • node: