Class QueryByExamplePredicateBuilder

java.lang.Object

org.springframework.data.jpa.convert.QueryByExamplePredicateBuilder

public class QueryByExamplePredicateBuilder
extends Object

QueryByExamplePredicateBuilder creates a single CriteriaBuilder.and(Predicate...) combined Predicate for a given Example.
The builder includes any SingularAttribute of the Example.getProbe() applying String and null matching strategies configured on the Example. Ignored paths are no matter of their actual value not considered.

Since:

1.10

Author:

Christoph Strobl, Mark Paluch, Oliver Gierke, Jens Schauder, Greg Turnquist, Arnaud Lecointre

Constructor Summary

Constructors

Constructor	Description
QueryByExamplePredicateBuilder()

Method Summary

Modifier and Type	Method	Description
static <T> @Nullable Predicate	getPredicate(Root<T> root, CriteriaBuilder cb, Example<T> example)	Extract the Predicate representing the Example.
static <T> @Nullable Predicate	getPredicate(Root<T> root, CriteriaBuilder cb, Example<T> example, EscapeCharacter escapeCharacter)	Extract the Predicate representing the Example.

Methods inherited from class Object

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

Constructor Details

QueryByExamplePredicateBuilder

public QueryByExamplePredicateBuilder()

Method Details

getPredicate

public static <T> @Nullable Predicate getPredicate(Root<T> root,
 CriteriaBuilder cb,
 Example<T> example)

Extract the Predicate representing the Example.

Parameters:

root - must not be null.

cb - must not be null.

example - must not be null.

Returns:

null indicates no Predicate.

getPredicate

public static <T> @Nullable Predicate getPredicate(Root<T> root,
 CriteriaBuilder cb,
 Example<T> example,
 EscapeCharacter escapeCharacter)

Extract the Predicate representing the Example.

Parameters:

root - must not be null.

cb - must not be null.

example - must not be null.

escapeCharacter - Must not be null.

Returns:

null indicates no constraints