Uses of Interface
wt.query.Expression

Packages that use Expression

wt.query

Provides generic support for defining SQL queries (see QuerySpec and the various things that can be appended to it) in a database inedependent manner that should be used with the PersistenceManager.

Uses of Expression in wt.query

Subinterfaces of Expression in wt.query

interface	ColumnExpression This interface defines an arbitrary expression that can be used to specify a "column" in a SQL SELECT, ORDER BY, GROUP BY or WHERE clause.
interface	OrderByExpression This interface defines an expression that can be used in a SQL ORDER BY clause.
interface	RelationalExpression This interface defines an expression that can be used as an operand in a relational expression in a SQL WHERE clause.

Classes in wt.query that implement Expression

class	ArrayExpression This class represents an array of constants in a SQL IN clause.
class	ArrayTableExpression This class implements a TableExpression for an array of values that can be used as a table.
class	ClassAttribute This class represents a class attribute which can be used in a SQL statement.
class	ColumnListExpression This class implments a list of ColumnExpressions.
class	ConstantExpression This class represents a constant in a SQL statement.
class	DateExpression This class represents a date constant in a SQL statement.
class	FixedLengthStringExpression This class represents a fixed length string constant in a SQL statement.
class	KeywordExpression This class represents an expression that evaluates to a SQL keyword that can be used in a SQL statement.
class	RangeExpression This class represents a range in a SQL WHERE clause.
class	SQLFunction This class represents a SQL function within a SQL statement.
class	SubSelectExpression This class represents a subselect which can be used in a SQL statement.
class	TableColumn This class represents a table column which can be used in a SQL statement.