com.querydsl.core.group

Class GroupImpl

java.lang.Object

com.querydsl.core.group.GroupImpl

All Implemented Interfaces:

Group

public class GroupImpl
extends java.lang.Object
implements Group

Default implementation of the Group interface

Author:

sasa, tiwe

Constructor Summary

Constructors

Constructor and Description
GroupImpl(java.util.List<GroupExpression<?,?>> columnDefinitions, java.util.List<QPair<?,?>> maps)

Method Summary

Modifier and Type	Method and Description
void	add(java.lang.Object[] row)
<T,R> R	getGroup(GroupExpression<T,R> definition) Returns the value of the given group.
<T> java.util.List<T>	getList(Expression<T> expr) Returns a List of values in this group.
<K,V> java.util.Map<K,V>	getMap(Expression<K> key, Expression<V> value) Returns a Map of values in this group
<T> T	getOne(Expression<T> expr) Returns the value of the given single valued expression.
<T> java.util.Set<T>	getSet(Expression<T> expr) Returns a Set of values in this group.
<K,V> java.util.SortedMap<K,V>	getSortedMap(Expression<K> key, Expression<V> value) Returns a SortedMap of values in this group
<T> java.util.SortedSet<T>	getSortedSet(Expression<T> expr) Returns a SortedSet of values in this group.
java.lang.Object[]	toArray() Groups elements as an array

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupImpl

public GroupImpl(java.util.List<GroupExpression<?,?>> columnDefinitions,
                 java.util.List<QPair<?,?>> maps)

Method Detail

add

public void add(java.lang.Object[] row)

getGroup

public <T,R> R getGroup(GroupExpression<T,R> definition)

Description copied from interface: Group

Returns the value of the given group.

Specified by:

getGroup in interface Group

Type Parameters:

T - Type of element in a single ResultSet row, i.e. type of Expression<T>

R - Target type of this group, e.g. List<T>

Returns:

Value of given group definition in this group

getList

public <T> java.util.List<T> getList(Expression<T> expr)

Description copied from interface: Group

Returns a List of values in this group.

Specified by:

getList in interface Group

Type Parameters:

T - Value type of List

Parameters:

expr - Grouped expression

Returns:

List of values in this group

getMap

public <K,V> java.util.Map<K,V> getMap(Expression<K> key,
                                       Expression<V> value)

Description copied from interface: Group

Returns a Map of values in this group

Specified by:

getMap in interface Group

Type Parameters:

K - Key type of result Map

V - Value type of result Map

Parameters:

key - Key expression

value - Value expression

Returns:

Map of values in this group

getSortedMap

public <K,V> java.util.SortedMap<K,V> getSortedMap(Expression<K> key,
                                                   Expression<V> value)

Description copied from interface: Group

Returns a SortedMap of values in this group

Specified by:

getSortedMap in interface Group

Type Parameters:

K - Key type of result Map

V - Value type of result Map

Parameters:

key - Key expression

value - Value expression

Returns:

Map of values in this group

getOne

public <T> T getOne(Expression<T> expr)

Description copied from interface: Group

Returns the value of the given single valued expression. This is the first value of given column within this group of the ResultSet.

Specified by:

getOne in interface Group

Type Parameters:

T - Value type

Parameters:

expr - Grouped expression

Returns:

Value of given expression in this group

getSet

public <T> java.util.Set<T> getSet(Expression<T> expr)

Description copied from interface: Group

Returns a Set of values in this group.

Specified by:

getSet in interface Group

Type Parameters:

T - Value type of Set

Parameters:

expr - Grouped expression

Returns:

Set of values in this group

getSortedSet

public <T> java.util.SortedSet<T> getSortedSet(Expression<T> expr)

Description copied from interface: Group

Returns a SortedSet of values in this group.

Specified by:

getSortedSet in interface Group

Type Parameters:

T - Value type of Set

Parameters:

expr - Grouped expression

Returns:

Set of values in this group

toArray

public java.lang.Object[] toArray()

Description copied from interface: Group

Groups elements as an array

Specified by:

toArray in interface Group

Returns:

elements as an array