spring-data-r2dbc

来源： https://stackoverflow.com/questions/63878598/numeric-types-mapping-issue-in-spring-data-r2dbc-with-postgres

来源： https://stackoverflow.com/questions/58874827/spring-data-r2dbc-and-pagination

来源： https://stackoverflow.com/questions/58874827/spring-data-r2dbc-and-pagination

问题 Does H2DBC support PostgreSQL enums? I checked they git page but it doesn't mention anything about it. If it does, how enums could be used (INSERT, SELECT)? Lets say PostgreSQL enum CREATE TYPE mood AS ENUM ('UNKNOWN', 'HAPPY', 'SAD', ...); Java class @Data public class Person { private String name; private Mood mood; // ... enum Mood{ UNKNOWN, HAPPY, SAD, ...} } I tried: // insert var person = ...; client.insert() .table("people") .using(person) .then() .subscribe(System.out::println); //

问题 Does H2DBC support PostgreSQL enums? I checked they git page but it doesn't mention anything about it. If it does, how enums could be used (INSERT, SELECT)? Lets say PostgreSQL enum CREATE TYPE mood AS ENUM ('UNKNOWN', 'HAPPY', 'SAD', ...); Java class @Data public class Person { private String name; private Mood mood; // ... enum Mood{ UNKNOWN, HAPPY, SAD, ...} } I tried: // insert var person = ...; client.insert() .table("people") .using(person) .then() .subscribe(System.out::println); //

问题 In java reactor, r2dbc. I have two tables A, B. I also have repositories for them defined. How can i get data made up of A join B? I only come up with the following approach: call databaseClient.select from A and consequently in a loop call select from B. But i want more efficient and reactive way. How to do it? 回答1: TL;DR: Using SQL. Spring Data's DatabaseClient is an improved and reactive variant for R2DBC of what JdbcTemplate is for JDBC. It encapsulates various execution modes, resource

问题 Have an issue starting up a postgresql r2dbs spring boot application. I am getting the below error for this configuration.: Inside main module: <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>io.projectreactor</groupId> <artifactId>reactor-core</artifactId> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-r2dbc</artifactId> </dependency>

问题 Have an issue starting up a postgresql r2dbs spring boot application. I am getting the below error for this configuration.: Inside main module: <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>io.projectreactor</groupId> <artifactId>reactor-core</artifactId> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-r2dbc</artifactId> </dependency>