[doyto-query-r2dbc] add ReactiveDataQueryClient.java

doyto-query-reactive-api/src/main/java/win/doyto/query/reactive/core/ReactiveDataQueryClient.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright © 2019-2022 Forb Yuan
+ *
+ * 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 win.doyto.query.reactive.core;
+
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+import win.doyto.query.core.AggregationQuery;
+import win.doyto.query.core.DoytoQuery;
+import win.doyto.query.core.PageList;
+import win.doyto.query.core.RelationalQuery;
+import win.doyto.query.entity.Persistable;
+
+import java.io.Serializable;
+
+/**
+ * ReactiveDataQueryClient
+ *
+ * @author f0rb on 2022/12/23
+ * @since 1.0.0
+ */
+public interface ReactiveDataQueryClient {
+
+    <V extends Persistable<I>, I extends Serializable, Q extends DoytoQuery>
+    Flux<V> query(Q query, Class<V> viewClass);
+
+    <V extends Persistable<I>, I extends Serializable, Q extends DoytoQuery>
+    Mono<Long> count(Q query, Class<V> viewClass);
+
+    default <V extends Persistable<I>, I extends Serializable, Q extends DoytoQuery>
+    Mono<PageList<V>> page(Q query, Class<V> viewClass) {
+        query.forcePaging();
+        return query(query, viewClass)
+                .collectList()
+                .zipWith(count(query, viewClass))
+                .map(t -> new PageList<>(t.getT1(), t.getT2()));
+    }
+
+    default <V extends Persistable<I>, I extends Serializable, Q extends RelationalQuery<V, I>>
+    Flux<V> query(Q query) {
+        return query(query, query.getDomainClass());
+    }
+
+    default <V extends Persistable<I>, I extends Serializable, Q extends RelationalQuery<V, I>>
+    Mono<Long> count(Q query) {
+        return count(query, query.getDomainClass());
+    }
+
+    default <V extends Persistable<I>, I extends Serializable, Q extends RelationalQuery<V, I>>
+    Mono<PageList<V>> page(Q query) {
+        return page(query, query.getDomainClass());
+    }
+
+    <V, Q extends AggregationQuery>
+    Flux<V> aggregate(Q query, Class<V> viewClass);
+}