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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

CSimple, ECollectionBase, EComparableBase, EConstructor, EMapBase, ExprConst, ObjectSubQuery, OSimple, PArray, PEntity, PSimple

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 instance is bound to.

Version:

$Id$

Author:

tiwe

See Also:

Serialized Form

Constructor Summary

Expr(Class<? extends D> type)

Method Summary

abstract void	accept(Visitor v)
ENumber<Long>	count() Get the count(this) expression
static ENumber<Long>	countAll() Get the count(*) expression
ENumber<Long>	countDistinct() Get the count(distinct this) expression
EBoolean	eq(D right) Get a this == right expression
EBoolean	eq(Expr<? super D> right) Get a this == right expression
Class<? extends D>	getType() Get the Java type for this expression
int	hashCode()
EBoolean	in(Collection<? extends D> right) Get a this in right expression
EBoolean	in(D... right) Get a this in right expression
EBoolean	in(ECollection<?,? extends D> right) Get a this in right expression
EBoolean	ne(D right) Get a this <> right expression
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()
CaseForEqBuilder<D>	when(D other)
CaseForEqBuilder<D>	when(Expr<? extends D> other)

Methods inherited from class java.lang.Object

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

Constructor Detail

Expr

public Expr(Class<? extends D> type)

Method Detail

countAll

public static ENumber<Long> countAll()

Get the count(*) expression

Returns:

count(*)

accept

public abstract void accept(Visitor v)

count

public ENumber<Long> count()

Get the count(this) expression

Returns:

count(this)

countDistinct

public ENumber<Long> countDistinct()

Get the count(distinct this) expression

Returns:

count(distinct this)

eq

public EBoolean eq(D right)

Get a this == right expression

Parameters:

right - rhs of the comparison

Returns:

eq

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

Get a this == right expression

Parameters:

right - rhs of the comparison

Returns:

getType

public Class<? extends D> getType()

Get the Java type for this expression

Returns:

hashCode

public int hashCode()

Overrides:

hashCode in class Object

in

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

Get a this in right expression

Parameters:

right - rhs of the comparison

Returns:

in

public final EBoolean in(D... right)

Get a this in right expression

Parameters:

right - rhs of the comparison

Returns:

in

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

Get a this in right expression

Parameters:

right - rhs of the comparison

Returns:

ne

public EBoolean ne(D right)

Get a this <> right expression

Parameters:

right - rhs of the comparison

Returns:

ne

public final 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 final 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

when

public CaseForEqBuilder<D> when(D other)

Parameters:

other -

Returns:

when

public CaseForEqBuilder<D> when(Expr<? extends D> other)

Parameters:

other -

Returns: