C# Class Deveel.Data.Sql.Expressions.SqlExpression

Defines the base class for instances that represent SQL expression tree nodes.

The architecture of the SQL Expression domain is to keep the implementation internal to the project, that means it will be possible to construct expressions only through this class, calling factory methods (for example Binary).

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Private Properties

Свойство	Type	Description
AppendTo	void
Deserialize	SqlExpression
ISerializable	void
ISqlFormattable	void
Parse	SqlExpression
Serialize	void
SqlExpression	System
SqlExpression	System
TryParse	bool

Méthodes publiques

Méthode	Description
Accept ( SqlExpressionVisitor visitor ) : SqlExpression
Add ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
All ( SqlExpression value ) : SqlQuantifiedExpression
And ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Any ( SqlExpression value ) : SqlQuantifiedExpression
Assign ( SqlExpression reference, SqlExpression valueExpression ) : SqlAssignExpression
Binary ( SqlExpression left, SqlExpressionType expressionType, SqlExpression right ) : SqlBinaryExpression
Cast ( SqlExpression value, SqlType destType ) : SqlCastExpression
Conditional ( SqlExpression testExpression, SqlExpression ifTrue ) : SqlConditionalExpression
Conditional ( SqlExpression testExpression, SqlExpression ifTrue, SqlExpression ifFalse ) : SqlConditionalExpression
Constant ( Field value ) : SqlConstantExpression
Constant ( object value ) : SqlConstantExpression
Divide ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Equal ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Evaluate ( ) : SqlExpression	Statically evaluates the expression, outside any context.
Evaluate ( EvaluateContext context ) : SqlExpression	When overridden by a derived class, this method evaluates the expression within the provided context. This method is only executed is CanEvaluate is `true`, and the override method can reduce this expression to a simpler form.
Evaluate ( IRequest context, IVariableResolver variables ) : SqlExpression
Evaluate ( IRequest context, IVariableResolver variables, IGroupResolver group ) : SqlExpression
FunctionCall ( ObjectName functionName ) : SqlFunctionCallExpression
FunctionCall ( ObjectName functionName, InvokeArgument args ) : SqlFunctionCallExpression
FunctionCall ( ObjectName functionName, SqlExpression args ) : SqlFunctionCallExpression
FunctionCall ( string functionName ) : SqlFunctionCallExpression
FunctionCall ( string functionName, InvokeArgument args ) : SqlFunctionCallExpression
FunctionCall ( string functionName, SqlExpression args ) : SqlFunctionCallExpression
GreaterOrEqualThan ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
GreaterThan ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Is ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
IsNot ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Like ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Modulo ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Multiply ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Negate ( SqlExpression operand ) : SqlUnaryExpression
Not ( SqlExpression operand ) : SqlUnaryExpression
NotEqual ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
NotLike ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Or ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Parse ( string s ) : SqlExpression	Parses the given SQL string to an expression that can be evaluated.
Parse ( string s, IContext context ) : SqlExpression	Parses the given SQL string to an expression that can be evaluated.
Prepare ( IExpressionPreparer preparer ) : SqlExpression
Quantified ( SqlExpressionType expressionType, SqlExpression value ) : SqlQuantifiedExpression
Reference ( ObjectName objectName ) : SqlReferenceExpression
SmallerOrEqualThan ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
SmallerThan ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
Subtract ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
ToString ( ) : string
TryParse ( string s, IExpressionParser parser, SqlExpression &expression ) : bool
Tuple ( SqlExpression expressions ) : SqlTupleExpression
Tuple ( SqlExpression expr1, SqlExpression exp2 ) : SqlTupleExpression
Tuple ( SqlExpression expr1, SqlExpression expr2, SqlExpression expr3 ) : SqlTupleExpression
Unary ( SqlExpressionType expressionType, SqlExpression operand ) : SqlUnaryExpression
UnaryPlus ( SqlExpression operand ) : SqlUnaryExpression
VariableReference ( string varName ) : SqlVariableReferenceExpression
XOr ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression

Méthodes protégées

Méthode	Description
GetData ( SerializationInfo info, StreamingContext context ) : void

Private Methods

Méthode	Description
AppendTo ( SqlStringBuilder builder ) : void
Deserialize ( BinaryReader reader ) : SqlExpression
ISerializable ( SerializationInfo info, StreamingContext context ) : void
ISqlFormattable ( SqlStringBuilder builder ) : void
Parse ( string s, IExpressionParser parser ) : SqlExpression
Serialize ( SqlExpression expression, BinaryWriter writer ) : void
SqlExpression ( ) : System	Internally constructs the SQL expression, avoiding external implementations to be allowed to inherit this class.
SqlExpression ( SerializationInfo info, StreamingContext context ) : System
TryParse ( string s, IExpressionParser parser, SqlExpression &expression, Exception &error ) : bool

Method Details

Accept() public méthode

public Accept ( SqlExpressionVisitor visitor ) : SqlExpression
visitor	SqlExpressionVisitor
Résultat	SqlExpression

Add() public static méthode

public static Add ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

All() public static méthode

public static All ( SqlExpression value ) : SqlQuantifiedExpression
value	SqlExpression
Résultat	SqlQuantifiedExpression

And() public static méthode

public static And ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Any() public static méthode

public static Any ( SqlExpression value ) : SqlQuantifiedExpression
value	SqlExpression
Résultat	SqlQuantifiedExpression

Assign() public static méthode

public static Assign ( SqlExpression reference, SqlExpression valueExpression ) : SqlAssignExpression
reference	SqlExpression
valueExpression	SqlExpression
Résultat	SqlAssignExpression

Binary() public static méthode

public static Binary ( SqlExpression left, SqlExpressionType expressionType, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
expressionType	SqlExpressionType
right	SqlExpression
Résultat	SqlBinaryExpression

Cast() public static méthode

public static Cast ( SqlExpression value, SqlType destType ) : SqlCastExpression
value	SqlExpression
destType	SqlType
Résultat	SqlCastExpression

Conditional() public static méthode

public static Conditional ( SqlExpression testExpression, SqlExpression ifTrue ) : SqlConditionalExpression
testExpression	SqlExpression
ifTrue	SqlExpression
Résultat	SqlConditionalExpression

Conditional() public static méthode

public static Conditional ( SqlExpression testExpression, SqlExpression ifTrue, SqlExpression ifFalse ) : SqlConditionalExpression
testExpression	SqlExpression
ifTrue	SqlExpression
ifFalse	SqlExpression
Résultat	SqlConditionalExpression

Constant() public static méthode

public static Constant ( Field value ) : SqlConstantExpression
value	Field
Résultat	SqlConstantExpression

Constant() public static méthode

public static Constant ( object value ) : SqlConstantExpression
value	object
Résultat	SqlConstantExpression

Divide() public static méthode

public static Divide ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Equal() public static méthode

public static Equal ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Evaluate() public méthode

Statically evaluates the expression, outside any context.

/// If any error occurred while evaluating the expression. ///

public Evaluate ( ) : SqlExpression
Résultat	SqlExpression

Evaluate() public méthode

When overridden by a derived class, this method evaluates the expression within the provided context.

This method is only executed is CanEvaluate is true, and the override method can reduce this expression to a simpler form.

/// If any error occurred while evaluating the expression. ///

public Evaluate ( EvaluateContext context ) : SqlExpression
context	EvaluateContext	The context for the evaluation of the expression, providing /// access to the system or to the execution context.
Résultat	SqlExpression

Evaluate() public méthode

public Evaluate ( IRequest context, IVariableResolver variables ) : SqlExpression
context	IRequest
variables	IVariableResolver
Résultat	SqlExpression

Evaluate() public méthode

public Evaluate ( IRequest context, IVariableResolver variables, IGroupResolver group ) : SqlExpression
context	IRequest
variables	IVariableResolver
group	IGroupResolver
Résultat	SqlExpression

FunctionCall() public static méthode

public static FunctionCall ( ObjectName functionName ) : SqlFunctionCallExpression
functionName	ObjectName
Résultat	SqlFunctionCallExpression

FunctionCall() public static méthode

public static FunctionCall ( ObjectName functionName, InvokeArgument args ) : SqlFunctionCallExpression
functionName	ObjectName
args	InvokeArgument
Résultat	SqlFunctionCallExpression

FunctionCall() public static méthode

public static FunctionCall ( ObjectName functionName, SqlExpression args ) : SqlFunctionCallExpression
functionName	ObjectName
args	SqlExpression
Résultat	SqlFunctionCallExpression

FunctionCall() public static méthode

public static FunctionCall ( string functionName ) : SqlFunctionCallExpression
functionName	string
Résultat	SqlFunctionCallExpression

FunctionCall() public static méthode

public static FunctionCall ( string functionName, InvokeArgument args ) : SqlFunctionCallExpression
functionName	string
args	InvokeArgument
Résultat	SqlFunctionCallExpression

FunctionCall() public static méthode

public static FunctionCall ( string functionName, SqlExpression args ) : SqlFunctionCallExpression
functionName	string
args	SqlExpression
Résultat	SqlFunctionCallExpression

GetData() protected méthode

protected GetData ( SerializationInfo info, StreamingContext context ) : void
info	SerializationInfo
context	StreamingContext
Résultat	void

GreaterOrEqualThan() public static méthode

public static GreaterOrEqualThan ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

GreaterThan() public static méthode

public static GreaterThan ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Is() public static méthode

public static Is ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

IsNot() public static méthode

public static IsNot ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Like() public static méthode

public static Like ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Modulo() public static méthode

public static Modulo ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Multiply() public static méthode

public static Multiply ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Negate() public static méthode

public static Negate ( SqlExpression operand ) : SqlUnaryExpression
operand	SqlExpression
Résultat	SqlUnaryExpression

Not() public static méthode

public static Not ( SqlExpression operand ) : SqlUnaryExpression
operand	SqlExpression
Résultat	SqlUnaryExpression

NotEqual() public static méthode

public static NotEqual ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

NotLike() public static méthode

public static NotLike ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Or() public static méthode

public static Or ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Parse() public static méthode

Parses the given SQL string to an expression that can be evaluated.

public static Parse ( string s ) : SqlExpression
s	string	The string to parse.
Résultat	SqlExpression

Parse() public static méthode

Parses the given SQL string to an expression that can be evaluated.

public static Parse ( string s, IContext context ) : SqlExpression
s	string	The string to parse.
context	IContext
Résultat	SqlExpression

Prepare() public méthode

public Prepare ( IExpressionPreparer preparer ) : SqlExpression
preparer	IExpressionPreparer
Résultat	SqlExpression

Quantified() public static méthode

public static Quantified ( SqlExpressionType expressionType, SqlExpression value ) : SqlQuantifiedExpression
expressionType	SqlExpressionType
value	SqlExpression
Résultat	SqlQuantifiedExpression

Reference() public static méthode

public static Reference ( ObjectName objectName ) : SqlReferenceExpression
objectName	ObjectName
Résultat	SqlReferenceExpression

SmallerOrEqualThan() public static méthode

public static SmallerOrEqualThan ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

SmallerThan() public static méthode

public static SmallerThan ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

Subtract() public static méthode

public static Subtract ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression

ToString() public méthode

public ToString ( ) : string
Résultat	string

TryParse() public static méthode

public static TryParse ( string s, IExpressionParser parser, SqlExpression &expression ) : bool
s	string
parser	IExpressionParser
expression	SqlExpression
Résultat	bool

Tuple() public static méthode

public static Tuple ( SqlExpression expressions ) : SqlTupleExpression
expressions	SqlExpression
Résultat	SqlTupleExpression

Tuple() public static méthode

public static Tuple ( SqlExpression expr1, SqlExpression exp2 ) : SqlTupleExpression
expr1	SqlExpression
exp2	SqlExpression
Résultat	SqlTupleExpression

Tuple() public static méthode

public static Tuple ( SqlExpression expr1, SqlExpression expr2, SqlExpression expr3 ) : SqlTupleExpression
expr1	SqlExpression
expr2	SqlExpression
expr3	SqlExpression
Résultat	SqlTupleExpression

Unary() public static méthode

public static Unary ( SqlExpressionType expressionType, SqlExpression operand ) : SqlUnaryExpression
expressionType	SqlExpressionType
operand	SqlExpression
Résultat	SqlUnaryExpression

UnaryPlus() public static méthode

public static UnaryPlus ( SqlExpression operand ) : SqlUnaryExpression
operand	SqlExpression
Résultat	SqlUnaryExpression

VariableReference() public static méthode

public static VariableReference ( string varName ) : SqlVariableReferenceExpression
varName	string
Résultat	SqlVariableReferenceExpression

XOr() public static méthode

public static XOr ( SqlExpression left, SqlExpression right ) : SqlBinaryExpression
left	SqlExpression
right	SqlExpression
Résultat	SqlBinaryExpression