diff --git a/pom.xml b/pom.xml
index 10faa9bc9c..11587c010c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
org.springframework.data
spring-data-commons
- 2.2.0.BUILD-SNAPSHOT
+ 2.2.0.DATACMNS-1081-SNAPSHOT
Spring Data Core
diff --git a/src/main/java/org/springframework/data/querydsl/ReactiveQuerydslPredicateExecutor.java b/src/main/java/org/springframework/data/querydsl/ReactiveQuerydslPredicateExecutor.java
new file mode 100644
index 0000000000..2b423558a6
--- /dev/null
+++ b/src/main/java/org/springframework/data/querydsl/ReactiveQuerydslPredicateExecutor.java
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.querydsl;
+
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+import org.springframework.data.domain.Sort;
+
+import com.querydsl.core.types.OrderSpecifier;
+import com.querydsl.core.types.Predicate;
+
+/**
+ * Interface to issue queries using Querydsl {@link Predicate} instances.
+ * Intended for usage along with the {@link org.springframework.data.repository.reactive.ReactiveCrudRepository}
+ * interface to wire in Querydslsupport.
+ *
+ *
+ *
+ *
+ * public interface PersonRepository extends ReactiveCrudRepository<Person, String>, ReactiveQuerydslPredicateExecutor<Person> {
+ *
+ * }
+ *
+ * // ...
+ *
+ * personRepository.findOne(QPerson.person.email.eq("t-800@skynet.com"))
+ * .flatMap(t800 ->
+ * //....
+ *
+ *
+ *
+ *
+ * IMPORTANT: Please check the module specific documentation whether or not Querydsl is supported.
+ *
+ * @author Mark Paluch
+ * @author Christoph Strobl
+ * @since 2.2
+ */
+public interface ReactiveQuerydslPredicateExecutor {
+
+ /**
+ * Returns a {@link Mono} emitting the entity matching the given {@link Predicate} or {@link Mono#empty()} if none was
+ * found.
+ *
+ * @param predicate must not be {@literal null}.
+ * @return a {@link Mono} emitting a single entity matching the given {@link Predicate} or {@link Mono#empty()} if
+ * none was found.
+ * @throws IllegalArgumentException if the required parameter is {@literal null}.
+ * @throws org.springframework.dao.IncorrectResultSizeDataAccessException if the predicate yields more than one
+ * result.
+ */
+ Mono findOne(Predicate predicate);
+
+ /**
+ * Returns a {@link Flux} emitting all entities matching the given {@link Predicate}. In case no match could be found,
+ * {@link Flux} emits no items.
+ *
+ * @param predicate must not be {@literal null}.
+ * @return a {@link Flux} emitting all entities matching the given {@link Predicate} one by one.
+ * @throws IllegalArgumentException if the required parameter is {@literal null}.
+ */
+ Flux findAll(Predicate predicate);
+
+ /**
+ * Returns a {@link Flux} emitting all entities matching the given {@link Predicate} applying the given {@link Sort}.
+ * In case no match could be found, {@link Flux} emits no items.
+ *
+ * @param predicate must not be {@literal null}.
+ * @param sort the {@link Sort} specification to sort the results by, may be {@link Sort#unsorted()}, must not be
+ * {@literal null}.
+ * @return a {@link Flux} emitting all entities matching the given {@link Predicate} one by one.
+ * @throws IllegalArgumentException if one of the required parameters is {@literal null}.
+ */
+ Flux findAll(Predicate predicate, Sort sort);
+
+ /**
+ * Returns a {@link Flux} emitting all entities matching the given {@link Predicate} applying the given
+ * {@link OrderSpecifier}s. In case no match could be found, {@link Flux} emits no items.
+ *
+ * @param predicate must not be {@literal null}.
+ * @param orders the {@link OrderSpecifier}s to sort the results by.
+ * @return a {@link Flux} emitting all entities matching the given {@link Predicate} applying the given
+ * {@link OrderSpecifier}s.
+ * @throws IllegalArgumentException if one of the required parameter is {@literal null}, or contains a {@literal null}
+ * value.
+ */
+ Flux findAll(Predicate predicate, OrderSpecifier... orders);
+
+ /**
+ * Returns a {@link Flux} emitting all entities ordered by the given {@link OrderSpecifier}s.
+ *
+ * @param orders the {@link OrderSpecifier}s to sort the results by.
+ * @return a {@link Flux} emitting all entities ordered by the given {@link OrderSpecifier}s.
+ * @throws IllegalArgumentException one of the {@link OrderSpecifier OrderSpecifiers} is {@literal null}.
+ */
+ Flux findAll(OrderSpecifier... orders);
+
+ /**
+ * Returns a {@link Mono} emitting the number of instances matching the given {@link Predicate}.
+ *
+ * @param predicate the {@link Predicate} to count instances for, must not be {@literal null}.
+ * @return a {@link Mono} emitting the number of instances matching the {@link Predicate} or {@code 0} if none found.
+ * @throws IllegalArgumentException if the required parameter is {@literal null}.
+ */
+ Mono count(Predicate predicate);
+
+ /**
+ * Checks whether the data store contains elements that match the given {@link Predicate}.
+ *
+ * @param predicate the {@link Predicate} to use for the existence check, must not be {@literal null}.
+ * @return a {@link Mono} emitting {@literal true} if the data store contains elements that match the given
+ * {@link Predicate}, {@literal false} otherwise.
+ * @throws IllegalArgumentException if the required parameter is {@literal null}.
+ */
+ Mono exists(Predicate predicate);
+}