C# Class Azavea.Open.DAO.Criteria.Joins.AbstractJoinExpression

Inheritance: IJoinExpression

Protected Properties

Property	Type	Description
_trueOrNot	bool

Public Methods

Method	Description
Flip ( ) : IJoinExpression	For some implementations, it's simpler to only implement one-sided joins. So to handle right (or left) joins, you want to flip the criteria so the right and left daos are swapped and you can do a left (or right) join instead.
Invert ( ) : IExpression	Produces an expression that is the exact opposite of this expression. The new expression should exclude everything this one includes, and include everything this one excludes.
ToString ( ) : string
TrueOrNot ( ) : bool	This tells you whether you want things that match, or things that don't match, this expression.

Protected Methods

Method	Description
AbstractJoinExpression ( bool trueOrNot ) : System	This lets you specify whether to negate this expression.

Method Details

AbstractJoinExpression() protected method

This lets you specify whether to negate this expression.

protected AbstractJoinExpression ( bool trueOrNot ) : System
trueOrNot	bool	True means look for matches (I.E. ==), /// false means look for non-matches (I.E. !=)
return	System

Flip() public abstract method

For some implementations, it's simpler to only implement one-sided joins. So to handle right (or left) joins, you want to flip the criteria so the right and left daos are swapped and you can do a left (or right) join instead.

public abstract Flip ( ) : IJoinExpression
return	IJoinExpression

Invert() public abstract method

Produces an expression that is the exact opposite of this expression. The new expression should exclude everything this one includes, and include everything this one excludes.

public abstract Invert ( ) : IExpression
return	IExpression

ToString() public method

public ToString ( ) : string
return	string

TrueOrNot() public method

This tells you whether you want things that match, or things that don't match, this expression.

public TrueOrNot ( ) : bool
return	bool

Property Details

_trueOrNot protected property

Holds the value indicating whether this expression is negated.

protected bool _trueOrNot
return	bool