com.mysema.query.types
Class Expr<D>

java.lang.Object
  com.mysema.query.types.Expr<D>

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ESimple

public abstract class Expr<D>
extends Object
implements Serializable

Expr represents a general typed expression in a Query instance. The generic type parameter is a reference to the type the expression is bound to.

Version:

$Id$

Author:

tiwe

See Also:

Serialized Form

Field Summary

protected boolean

primitive

Constructor Summary

Expr(Class<? extends D> type)

Method Summary

abstract void	accept(Visitor v)
abstract Expr<D>	as(Path<D> alias)
Expr<D>	asExpr() Used for safe casts from Path, SubQuery, Operation and Custom to Expr
abstract ENumber<Long>	count() Get the count(this) expression
abstract ENumber<Long>	countDistinct() Get the count(distinct this) expression
abstract EBoolean	eq(D right) Get a this == right expression
abstract EBoolean	eq(Expr<? super D> right) Get a this == right expression
abstract boolean	equals(Object o)
Class<? extends D>	getType() Get the Java type for this expression
int	hashCode()
abstract EBoolean	in(Collection<? extends D> right) Get a this in right expression
abstract EBoolean	in(D... right) Get a this in right expression
abstract EBoolean	in(ECollection<?,? extends D> right) Get a this in right expression
abstract EBoolean	ne(D right) Get a this <> right expression
abstract EBoolean	ne(Expr<? super D> right) Get a this <> right expression
EBoolean	notIn(Collection<? extends D> right) Get a this not in right expression
EBoolean	notIn(D... right) Get a this not in right expression
EBoolean	notIn(ECollection<?,? extends D> right) Get a this not in right expression
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

primitive

protected final boolean primitive

Constructor Detail

Expr

public Expr(Class<? extends D> type)

Method Detail

accept

public abstract void accept(Visitor v)

asExpr

public final Expr<D> asExpr()

Used for safe casts from Path, SubQuery, Operation and Custom to Expr

Returns:

as

public abstract Expr<D> as(Path<D> alias)

count

public abstract ENumber<Long> count()

Get the count(this) expression

Returns:

count(this)

countDistinct

public abstract ENumber<Long> countDistinct()

Get the count(distinct this) expression

Returns:

count(distinct this)

eq

public abstract EBoolean eq(D right)

Get a this == right expression

Parameters:

right - rhs of the comparison

Returns:

eq

public abstract EBoolean eq(Expr<? super D> right)

Get a this == right expression

Parameters:

right - rhs of the comparison

Returns:

getType

public final Class<? extends D> getType()

Get the Java type for this expression

Returns:

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public abstract boolean equals(Object o)

Overrides:

equals in class Object

in

public abstract EBoolean in(Collection<? extends D> right)

Get a this in right expression

Parameters:

right - rhs of the comparison

Returns:

in

public abstract EBoolean in(D... right)

Get a this in right expression

Parameters:

right - rhs of the comparison

Returns:

in

public abstract EBoolean in(ECollection<?,? extends D> right)

Get a this in right expression

Parameters:

right - rhs of the comparison

Returns:

ne

public abstract EBoolean ne(D right)

Get a this <> right expression

Parameters:

right - rhs of the comparison

Returns:

ne

public abstract EBoolean ne(Expr<? super D> right)

Get a this <> right expression

Parameters:

right - rhs of the comparison

Returns:

notIn

public final EBoolean notIn(Collection<? extends D> right)

Get a this not in right expression

Parameters:

right - rhs of the comparison

Returns:

notIn

public EBoolean notIn(D... right)

Get a this not in right expression

Parameters:

right - rhs of the comparison

Returns:

notIn

public final EBoolean notIn(ECollection<?,? extends D> right)

Get a this not in right expression

Parameters:

right - rhs of the comparison

Returns:

toString

public final String toString()

Overrides:

toString in class Object