Add CrudService interface

src/main/java/cc/ryanc/halo/service/base/AbstractService.java

@@ -0,0 +1,11 @@
+package cc.ryanc.halo.service.base;
+
+/**
+ * Abstract service implementation.
+ *
+ * @param <ID>     id type
+ * @param <DOMAIN> domain type
+ */
+public abstract class AbstractService<ID, DOMAIN> implements CrudService<ID, DOMAIN> {
+
+}

src/main/java/cc/ryanc/halo/service/base/CrudService.java

@@ -0,0 +1,76 @@
+package cc.ryanc.halo.service.base;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+
+/**
+ * CrudService interface contained public methods.
+ *
+ * @param <ID>     id type
+ * @param <DOMAIN> domain type
+ * @author johnniang
+ */
+public interface CrudService<ID, DOMAIN> {
+
+    // **************** Select
+
+    List<DOMAIN> listAll();
+
+    List<DOMAIN> listAll(Sort sort);
+
+    Page<DOMAIN> listAll(Pageable pageable);
+
+//    <P> List<P> listAll(Class<P> projectionType);
+//
+//    <P> List<P> listAll(Class<P> projectionType, Sort sort);
+//
+//    <P> Page<P> listAll(Class<P> projectionType, Pageable pageable);
+
+    List<DOMAIN> listAllByIds(Iterable<ID> ids);
+
+    List<DOMAIN> listAllByIds(Iterable<ID> ids, Sort sort);
+
+    Map<ID, DOMAIN> listAllByIdsAsMap(Iterable<ID> ids);
+
+    Map<ID, DOMAIN> listAllByIdsAsMap(Iterable<ID> ids, Sort sort);
+
+    Optional<DOMAIN> fetchById(ID id);
+
+    DOMAIN getById(ID id);
+
+    DOMAIN getNullableById(ID id);
+
+    boolean existsById(ID id);
+
+    void mustExistById(ID id);
+
+
+    // **************** Create
+    DOMAIN create(DOMAIN domain);
+
+    List<DOMAIN> createInBatch(Iterable<DOMAIN> domains);
+
+
+    // **************** Update
+
+    DOMAIN update(DOMAIN domain);
+
+    List<DOMAIN> updateInBatch(Iterable<DOMAIN> domains);
+
+
+    // **************** Delete
+
+    void removeById(ID id);
+
+    void remove(DOMAIN domain);
+
+    void removeInBatch(Iterable<ID> ids);
+
+    void removeAll(Iterable<DOMAIN> domains);
+
+}