com.querydsl.core

Interface Tuple

public interface Tuple

Tuple defines an interface for generic query result projection

Usage example:

 
 List<Tuple> result = query.from(employee).select(employee.firstName, employee.lastName).fetch();
 for (Tuple row : result) {
     System.out.println("firstName " + row.get(employee.firstName));
     System.out.println("lastName " + row.get(employee.lastName));
 }
 
 

Author:

tiwe

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o) All Tuples should override equals and hashCode.
<T> T	get(Expression<T> expr) Get a tuple element by expression
<T> T	get(int index, java.lang.Class<T> type) Get a Tuple element by index
int	hashCode() All Tuples should override equals and hashCode.
int	size() Get the size of the Tuple
java.lang.Object[]	toArray() Get the content as an Object array

Method Detail

get

@Nullable
<T> T get(int index,
                    java.lang.Class<T> type)

Get a Tuple element by index

Type Parameters:

T - type of element

Parameters:

index - zero based index

type - type of element

Returns:

element in array

get

@Nullable
<T> T get(Expression<T> expr)

Get a tuple element by expression

Type Parameters:

T - type of element

Parameters:

expr - expression key

Returns:

result element that matches the expression

size

int size()

Get the size of the Tuple

Returns:

row element count

toArray

java.lang.Object[] toArray()

Get the content as an Object array

Returns:

tuple in array form

equals

boolean equals(java.lang.Object o)

All Tuples should override equals and hashCode. For compatibility across different Tuple implementations, equality check should use java.util.Arrays#equals(Object[], Object[]) with #toArray() as parameters.

Overrides:

equals in class java.lang.Object

hashCode

int hashCode()

All Tuples should override equals and hashCode. For compatibility across different Tuple implementations, hashCode should use java.util.Arrays#hashCode(Object[]) with #toArray() as parameter.

Overrides:

hashCode in class java.lang.Object