r2dbc-h2 | R2DBC H2 Implementation | Reactive Programming library

by r2dbc Java Version: 1.0.0.RELEASE License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(6)Vulnerabilities Install Support

kandi X-RAY | r2dbc-h2 Summary

r2dbc-h2 is a Java library typically used in Programming Style, Reactive Programming applications. r2dbc-h2 has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. However r2dbc-h2 has 1 bugs. You can download it from GitHub, Maven.

This project contains the H2 implementation of the R2DBC SPI. This implementation is not intended to be used directly, but rather to be used as the backing implementation for a humane client library.

Support

Quality

Security

License

Reuse

Support

r2dbc-h2 has a low active ecosystem.

It has 173 star(s) with 39 fork(s). There are 12 watchers for this library.

It had no major release in the last 12 months.

There are 18 open issues and 142 have been closed. On average issues are closed in 25 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of r2dbc-h2 is 1.0.0.RELEASE

Quality

r2dbc-h2 has 1 bugs (0 blocker, 0 critical, 1 major, 0 minor) and 41 code smells.

Security

r2dbc-h2 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

r2dbc-h2 code analysis shows 0 unresolved vulnerabilities.

There are 1 security hotspots that need review.

License

r2dbc-h2 is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

r2dbc-h2 releases are available to install and integrate.

Deployable package is available in Maven.

Build file is available. You can build the component from source.

Installation instructions, examples and code snippets are available.

r2dbc-h2 saves you 1821 person hours of effort in developing the same functionality from scratch.

It has 4023 lines of code, 419 functions and 70 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed r2dbc-h2 and discovered the below as its top functions. This is intended to give you an instant insight into r2dbc-h2 implemented functionality, and help decide if they suit your requirements.

Executes the query
Gets the columns
Converts the given ResultInterface to H2ColumnMetadata object
Converts H2 Result to H2Result
Executes the SQL statement
Executes an SQL command
Entry point for the downloader
Download file from URL
Prepares a SQL command
Creates a command
Skips the specified number of bytes from the input stream
Rollback a transaction
Commit transaction
Roll back a transaction to a given savepoint
Validates the connection with the given depth
Get key - > column metadata map
Determines whether this connection supports the given options
Releases a savepoint
Decodes a value
Closes the database
FlatMap all segments
Performs a benchmark using a simple test
Benchmarks a prepared statement using a prepared result set size
Returns a stream of UTF - 8 content stream
Open a Flux to a Flux stream
Creates a configuration object based on the given options

Get all kandi verified functions for this library.

r2dbc-h2 Key Features

No Key Features are available at this moment for r2dbc-h2.

r2dbc-h2 Examples and Code Snippets

No Code Snippets are available at this moment for r2dbc-h2.

Community Discussions

Trending Discussions on r2dbc-h2

Spring R2DBC - Getting "Table already exists" error while creating h2 table using schema.sql and ConnectionFactoryInitializer

r2dbc Unit Test - repository doesn't return anything after saving entity

Unable to create a ConnectionFactory Error with H2 and R2DBC in Spring Boot with WebFlux

R2DBC and liquibase

Problem extending Spring WebFlux application with reactive DB client: conflicting Maven dependencies?

Getting MappingException when reading TINYINT value from H2 database as boolean/Boolean

QUESTION

Spring R2DBC - Getting "Table already exists" error while creating h2 table using schema.sql and ConnectionFactoryInitializer

Asked 2021-Aug-30 at 19:59

Getting the error "Table Customer already exists" when i tried to create a table in H2 in memory database using schema.sql. I am using spring boot version: 2.5.4 and below is my pom.xml. It works fine if i use spring boot version: 2.4.3

...

ANSWER

Answered 2021-Aug-30 at 19:59

As spring already created the table from the root location schema.sql, ConnectionFactoryInitializer bean is not needed. Removing the ConnectionFactoryInitializer bean declaration fixed the issue.

Source https://stackoverflow.com/questions/68987990

QUESTION

r2dbc Unit Test - repository doesn't return anything after saving entity

Asked 2021-Jun-19 at 19:45

I'm learning Reative jdbc with R2DBC MySql. I have a repository like this:

...

ANSWER

Answered 2021-Jun-19 at 19:45

I realized my mistake. I forgot to add .subscribe() to the method userRepository.save(user);

So the test method is:

Source https://stackoverflow.com/questions/68049366

QUESTION

Unable to create a ConnectionFactory Error with H2 and R2DBC in Spring Boot with WebFlux

Asked 2021-May-25 at 23:41

I've created a Java Spring Boot service using the WebFlux reactive module, H2 in-memory database, and R2DBC reactive driver.

When I run the service, it fails with an "Unable to create a ConnectionFactory" error:

...

ANSWER

Answered 2021-May-25 at 23:41

OK, so I went back through my project file by file, diffing each file with a copy of the repo I was using as a guide. I found some extra database connection configuration code I thought I'd gotten rid of. As soon as I removed it, problem solved. Thanks to everyone who took a look and offered suggestions.

Source https://stackoverflow.com/questions/67527392

QUESTION

R2DBC and liquibase

Asked 2020-Dec-09 at 11:25

So starting a new project and i want to use r2dbc and webflux, been looking into what support there is to handle database migration. The last answer i could find here was from july 2019 that liquibase does not support R2DBC and after googling, this seems to still be the case.

The dream would be to use r2dbc-h2 while developing locally, and then use something like postgres during production. Liquibase would manage the table structure both locally and in production.

Been trying to google a bit about how such a setup would look like and there is very little information out there.

I have been thinking about setting up the tables using the liquibase-maven-plugin, but i don't know if that will work with r2dbc-h2.

So several questions:

How to setup so that liquibase uses a regular driver during migration, while the rest of the application uses the reactive driver?
if using the maven plugin can this be used with H2 or do i need postgres as a docker?

This is a very black hole for me, does any have any information?

...

ANSWER

Answered 2020-Jun-25 at 15:28

I think there should be no problem using 2 drivers in application. As liquibase uses standard jdbc driver you can configure it to use that one for migrations and configure r2dbc to run the application. Maybe some tweeks needs to be done but I would start with something like:

Source https://stackoverflow.com/questions/62555217

QUESTION

Problem extending Spring WebFlux application with reactive DB client: conflicting Maven dependencies?

Asked 2020-Nov-22 at 10:34

I have a small working Spring WebFlux app made basing on this code:

https://github.com/chang-chao/spring-webflux-reactive-jdbc-sample

As far as I've understood this is some kind of mix between purely reactive programming and usual blocking relational databases.

Now I have a task to add reactive DB client to my app. I stared with this guide:

https://spring.io/guides/gs/accessing-data-r2dbc/

But as soon as I added following dependencies to my pom.xml:

...

ANSWER

Answered 2020-Nov-22 at 10:34

The spring.datasource is for the traditional Jdbc data source, to configure an R2dbc connection, use spring.r2dbc prefix instead in Spring Boot application.properties.

Check my Spring R2dbc example, if you are new to Spring Data R2dbc, the docs in Readme.md.

Source https://stackoverflow.com/questions/64444279

QUESTION

Getting MappingException when reading TINYINT value from H2 database as boolean/Boolean

Asked 2020-Aug-13 at 09:09

I am using R2DBC H2 for integration testing my reactive application (which is based on Spring Webflux , Java).

Versions

Driver: io.r2dbc:r2dbc-h2:0.8.4.RELEASE (Spring boot 2.3.2.RELEASE)
Java: 11
OS: Mac

I have a table defined like this:

...

ANSWER

Answered 2020-Aug-13 at 09:09

The document Data Types says

TINYINT
Possible values are: -128 to 127.
See also integer literal grammar. Mapped to java.lang.Byte.

So you should change you DTO class like this:

Source https://stackoverflow.com/questions/63390995

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install r2dbc-h2

Here is a quick teaser of how to use R2DBC H2 in Java:.

Support

r2dbc-h2 will automatically register support for JTS Toplogy Suite and handle it’s Geometry types if org.locationtech.jts:jts-core is on the classpath.

Find more information at: