Package org.springframework.data.jpa.convert

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

Constructor Summary

Constructors

Constructor	Description
QueryByExamplePredicateBuilder()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Details

QueryByExamplePredicateBuilder

public QueryByExamplePredicateBuilder()

Method Details

getPredicate

@Nullable
public static <T>
jakarta.persistence.criteria.Predicate getPredicate(jakarta.persistence.criteria.Root<T> root,
 jakarta.persistence.criteria.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

@Nullable
public static <T>
jakarta.persistence.criteria.Predicate getPredicate(jakarta.persistence.criteria.Root<T> root,
 jakarta.persistence.criteria.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