com.mysema.query.group

Class AbstractGroupExpression<T,R>

java.lang.Object

com.mysema.query.group.AbstractGroupExpression<T,R>

Type Parameters:

T -

R -

All Implemented Interfaces:

GroupExpression<T,R>, Expression<R>, Serializable

Direct Known Subclasses:

GAvg, GSum

public abstract class AbstractGroupExpression<T,R>
extends Object
implements GroupExpression<T,R>

A base class for GroupExpressions

Author:

sasa

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractGroupExpression(Class<? super R> type, Expression<T> expr)

Method Summary

Methods

Modifier and Type	Method and Description
<R,C> R	accept(Visitor<R,C> v, C context) Accept the visitor with the given context
DslExpression<R>	as(Path<R> alias) Create an alias for the expression
DslExpression<R>	as(String alias) Create an alias for the expression
boolean	equals(Object o)
Expression<T>	getExpression()
Class<? extends R>	getType() Get the java type for this expression
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.mysema.query.group.GroupExpression

createGroupCollector

Constructor Detail

AbstractGroupExpression

public AbstractGroupExpression(Class<? super R> type,
                       Expression<T> expr)

Method Detail

as

public DslExpression<R> as(Path<R> alias)

Create an alias for the expression

Returns:

as

public DslExpression<R> as(String alias)

Create an alias for the expression

Returns:

getExpression

public Expression<T> getExpression()

Specified by:

getExpression in interface GroupExpression<T,R>

Returns:

Expression wrapped by this group definition

accept

public <R,C> R accept(Visitor<R,C> v,
             C context)

Description copied from interface: Expression

Accept the visitor with the given context

Specified by:

accept in interface Expression<R>

Type Parameters:

R - return type

C - context type

Parameters:

v - visitor

context - context of visit

Returns:

equals

public boolean equals(Object o)

Overrides:

equals in class Object

getType

public Class<? extends R> getType()

Description copied from interface: Expression

Get the java type for this expression

Specified by:

getType in interface Expression<R>

Returns:

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object