com.mysema.query.types

Class QMap

java.lang.Object

com.mysema.query.types.ExpressionBase<T>

com.mysema.query.types.FactoryExpressionBase<Map<Expression<?>,?>>

com.mysema.query.types.QMap

All Implemented Interfaces:

Expression<Map<Expression<?>,?>>, FactoryExpression<Map<Expression<?>,?>>, Serializable

public class QMap
extends FactoryExpressionBase<Map<Expression<?>,?>>

QMap represents a projection of type Map

Usage example

 List<Map<Expression<?>,?> result = query.from(employee).list(new QMap(employee.firstName, employee.lastName));
 for (Tuple row : result) {
     System.out.println("firstName " + row.get(employee.firstName));
     System.out.println("lastName " + row.get(employee.lastName)); 
 }
  
 

Author:

tiwe

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
QMap(Expression<?>... args) Create a new QMap instance
QMap(Expression<?>[]... args) Create a new QMap instance
QMap(com.google.common.collect.ImmutableList<Expression<?>> args) Create a new QMap instance

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
boolean	equals(Object obj)
List<Expression<?>>	getArgs() Get the invocation arguments
Map<Expression<?>,?>	newInstance(Object... args) Create a projection with the given arguments

Methods inherited from class com.mysema.query.types.FactoryExpressionBase

skipNulls

Methods inherited from class com.mysema.query.types.ExpressionBase

getType, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.mysema.query.types.Expression

getType

Constructor Detail

QMap

public QMap(Expression<?>... args)

Create a new QMap instance

Parameters:

args -

QMap

public QMap(com.google.common.collect.ImmutableList<Expression<?>> args)

Create a new QMap instance

Parameters:

args -

QMap

public QMap(Expression<?>[]... args)

Create a new QMap instance

Parameters:

args -

Method Detail

accept

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

Description copied from interface: Expression

Accept the visitor with the given context

Type Parameters:

R - return type

C - context type

Parameters:

v - visitor

context - context of visit

Returns:

getArgs

public List<Expression<?>> getArgs()

Description copied from interface: FactoryExpression

Get the invocation arguments

Returns:

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

newInstance

@Nullable
public Map<Expression<?>,?> newInstance(Object... args)

Description copied from interface: FactoryExpression

Create a projection with the given arguments

Returns: