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h2database | H2 is an embeddable RDBMS written in Java. | Database library

 by   h2database Java Version: version-2.1.212 License: Non-SPDX

 by   h2database Java Version: version-2.1.212 License: Non-SPDX

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kandi X-RAY | h2database Summary

h2database is a Java library typically used in Database applications. h2database has no bugs, it has no vulnerabilities and it has medium support. However h2database build file is not available and it has a Non-SPDX License. You can download it from GitHub, Maven.
H2 is an embeddable RDBMS written in Java.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • h2database has a medium active ecosystem.
  • It has 3237 star(s) with 1034 fork(s). There are 140 watchers for this library.
  • There were 1 major release(s) in the last 6 months.
  • There are 298 open issues and 1546 have been closed. On average issues are closed in 38 days. There are 19 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of h2database is version-2.1.212
h2database Support
Best in #Database
Average in #Database
h2database Support
Best in #Database
Average in #Database

quality kandi Quality

  • h2database has 0 bugs and 0 code smells.
h2database Quality
Best in #Database
Average in #Database
h2database Quality
Best in #Database
Average in #Database

securitySecurity

  • h2database has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • h2database code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
h2database Security
Best in #Database
Average in #Database
h2database Security
Best in #Database
Average in #Database

license License

  • h2database has a Non-SPDX License.
  • Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.
h2database License
Best in #Database
Average in #Database
h2database License
Best in #Database
Average in #Database

buildReuse

  • h2database releases are available to install and integrate.
  • Deployable package is available in Maven.
  • h2database has no build file. You will be need to create the build yourself to build the component from source.
  • Installation instructions are not available. Examples and code snippets are available.
  • h2database saves you 260444 person hours of effort in developing the same functionality from scratch.
  • It has 256234 lines of code, 17015 functions and 1319 files.
  • It has high code complexity. Code complexity directly impacts maintainability of the code.
h2database Reuse
Best in #Database
Average in #Database
h2database Reuse
Best in #Database
Average in #Database
Top functions reviewed by kandi - BETA

kandi has reviewed h2database and discovered the below as its top functions. This is intended to give you an instant insight into h2database implemented functionality, and help decide if they suit your requirements.

  • Generate the list of rows .
  • Read a builtin function .
  • Get the token type from a string .
  • Read value type from column .
  • Convert value to character date string .
  • Write a value .
  • Reads the header information from the file store .
  • Dumps a file to a writer .
  • Process a command .
  • Clone table structure .

h2database Key Features

Very fast, open source, JDBC API

Embedded and server modes; disk-based or in-memory databases

Transaction support, multi-version concurrency

Browser based Console application

Encrypted databases

Fulltext search

Pure Java with small footprint: around 2.5 MB jar file size

ODBC driver

Downloads

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<dependency>
    <groupId>com.h2database</groupId>
    <artifactId>h2</artifactId>
    <version>2.1.210</version>
</dependency>

Upgrading from springboot version 2.3.8.RELEASE to 2.4.0 and getting these errors for junit tests

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implementation "org.springframework.boot:spring-boot-starter-actuator"
compileOnly "org.springframework.boot:spring-boot-starter-actuator"
-----------------------
implementation "org.springframework.boot:spring-boot-starter-actuator"
compileOnly "org.springframework.boot:spring-boot-starter-actuator"

Problem setting up H2 init runscript. File is not found when script is not in classpath root folder while using java modular system

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module myAppModule {
    exports desktop.core.database;

    opens desktop.core.database;

    requires java.sql;
    requires org.junit.jupiter.api;
}

Spring Boot Logging to a File

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java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter
java.util.logging.ConsoleHandler.formatter = org.springframework.boot.logging.java.SimpleFormatter
-----------------------
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter
java.util.logging.ConsoleHandler.formatter = org.springframework.boot.logging.java.SimpleFormatter

nexus-staging-maven-plugin: maven deploy failed: An API incompatibility was encountered while executing

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export MAVEN_OPTS="--add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.text=ALL-UNNAMED --add-opens=java.desktop/java.awt.font=ALL-UNNAMED"
mvn deploy
<plugin>
  <groupId>org.sonatype.plugins</groupId>
  <artifactId>nexus-staging-maven-plugin</artifactId>
  <version>1.6.8</version>
  <extensions>true</extensions>
  <configuration>
    <serverId>ossrh</serverId>
    <nexusUrl>https://s01.oss.sonatype.org/</nexusUrl>
    <autoReleaseAfterClose>true</autoReleaseAfterClose>
  </configuration>
  <dependencies>
    <dependency>
      <groupId>com.thoughtworks.xstream</groupId>
      <artifactId>xstream</artifactId>
      <version>1.4.15</version> <!-- apparently this needs to be exactly this version -->
    </dependency>
  </dependencies>
</plugin>
-----------------------
export MAVEN_OPTS="--add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.text=ALL-UNNAMED --add-opens=java.desktop/java.awt.font=ALL-UNNAMED"
mvn deploy
<plugin>
  <groupId>org.sonatype.plugins</groupId>
  <artifactId>nexus-staging-maven-plugin</artifactId>
  <version>1.6.8</version>
  <extensions>true</extensions>
  <configuration>
    <serverId>ossrh</serverId>
    <nexusUrl>https://s01.oss.sonatype.org/</nexusUrl>
    <autoReleaseAfterClose>true</autoReleaseAfterClose>
  </configuration>
  <dependencies>
    <dependency>
      <groupId>com.thoughtworks.xstream</groupId>
      <artifactId>xstream</artifactId>
      <version>1.4.15</version> <!-- apparently this needs to be exactly this version -->
    </dependency>
  </dependencies>
</plugin>

SpringBoot + Lombok + MapStruct not sorking together

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<build>
<plugins>
    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.1</version>
        <configuration>
            <source>1.8</source>
            <target>1.8</target>
            <annotationProcessorPaths>
                <path>
                    <groupId>org.mapstruct</groupId>
                    <artifactId>mapstruct-processor</artifactId>
                    <version>${org.mapstruct.version}</version>
                </path>
                <path>
                    <groupId>org.projectlombok</groupId>
                    <artifactId>lombok</artifactId>
                    <version>${org.projectlombok.version}</version>
                </path>

                <!-- additional annotation processor required as of Lombok 1.18.16 -->
                <path>
                    <groupId>org.projectlombok</groupId>
                    <artifactId>lombok-mapstruct-binding</artifactId>
                    <version>0.1.0</version>
                </path>
            </annotationProcessorPaths>
        </configuration>
    </plugin>
</plugins>

New H2 version breaks liquibase

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<dependency>
   <groupId>org.hibernate</groupId>
   <artifactId>hibernate-core</artifactId>
   <version>5.6.5.Final</version>
</dependency>

Execution optimizations have been disabled for task ':compileGsonViews'

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tasks.named('bootWarMainClassName') {
    it.mustRunAfter(tasks.named('compileGsonViews'))
}

Failed to load ApplicationContext for a java based config test

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@Configuration
public class ExternalConfig {
    private static final String SECRET_ID_EVEN_TOKEN = "evenToken";

    @Bean
    public EvenClient webClient( AWSSecretsManagerService awsSecretsManagerService,
                         @Value("${even.url}") String url) {

        String token = awsSecretsManagerService.getSecretValue().get(SECRET_ID_EVEN_TOKEN);

        WebClient webClient = WebClient.builder()
                .exchangeStrategies(ExchangeStrategies.builder()
                        .codecs(configurer -> configurer
                                .defaultCodecs()
                                .maxInMemorySize(100 * 1024 * 1024) // default is 256 KB (262144 B), changed it to 100MB
                        ).build())
                .baseUrl(url)
                .defaultHeaders(h -> h.setBearerAuth(token))
                .build();
        return new EvenClient(webClient);
    }
}
-----------------------
 @org.springframework.boot.test.mock.mockito.MockBean
 private ExternalConfig externalConfig;

How to change database from h2 to MySql in JBPM

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To switch to MySQL use the following command when the server is stopped

<JBOSS_HOME>/bin/jboss-cli.sh --file=jbpm-mysql-config.cli      (Unix / Linux)

<JBOSS_HOME>\bin\jboss-cli.bat --file=jbpm-mysql-config.cli     (Windows)

dependency-check-maven - suppression not working

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  <suppress>
    <notes>
      <![CDATA[
      file name: h2-1.4.200.jar
      ]]>
    </notes>
    <packageUrl regex="true">^pkg:maven/com\.h2database/h2@.*$</packageUrl>
    <vulnerabilityName>CVE-2021-23463</vulnerabilityName>
  </suppress>
  <suppress>
    <notes>
      <![CDATA[
      file name: h2-1.4.200.jar
      ]]>
    </notes>
    <filePath regex="true">.*\/h2database.*\.jar</filePath>
    <vulnerabilityName>CVE-2021-23463</vulnerabilityName>
  </suppress>
-----------------------
  <suppress>
    <notes>
      <![CDATA[
      file name: h2-1.4.200.jar
      ]]>
    </notes>
    <packageUrl regex="true">^pkg:maven/com\.h2database/h2@.*$</packageUrl>
    <vulnerabilityName>CVE-2021-23463</vulnerabilityName>
  </suppress>
  <suppress>
    <notes>
      <![CDATA[
      file name: h2-1.4.200.jar
      ]]>
    </notes>
    <filePath regex="true">.*\/h2database.*\.jar</filePath>
    <vulnerabilityName>CVE-2021-23463</vulnerabilityName>
  </suppress>

Community Discussions

Trending Discussions on h2database
  • SpringBoot H2 Database loosing data in the every execute
  • SpringBoot H2 setup issue
  • Building Docker image from spring maven project for arm64 platform
  • Upgrading from springboot version 2.3.8.RELEASE to 2.4.0 and getting these errors for junit tests
  • How to reference a project definition in a parent build.sbt file?
  • Problem setting up H2 init runscript. File is not found when script is not in classpath root folder while using java modular system
  • Spring Boot Logging to a File
  • nexus-staging-maven-plugin: maven deploy failed: An API incompatibility was encountered while executing
  • SpringBoot + Lombok + MapStruct not sorking together
  • New H2 version breaks liquibase
Trending Discussions on h2database

QUESTION

SpringBoot H2 Database loosing data in the every execute

Asked 2022-Mar-31 at 07:55

I connected to h2 database and i'm posting the entity while using postman. But I loose the data everytime when I rerun the my code.

      spring.h2.console.enabled=true
      spring.datasource.url = jdbc:h2:mem:crm/db_;DB_CLOSE_DELAY=-1
      spring.datasource.driver-class-name=org.h2.Driver
      spring.datasource.username=sa
      spring.datasource.password=
      spring.jpa.show-sql=true
      spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.H2Dialect
      spring.jpa.hibernate.ddl-auto=update

Is there anyway to storage data in H2Database?

ANSWER

Answered 2022-Mar-31 at 07:55

Your datasource url specifies it as an in-memory database (h2:mem). You can specify it to store data in a file (in embedded mode) - see http://www.h2database.com/html/cheatSheet.html.

Source https://stackoverflow.com/questions/71688767

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

Vulnerabilities

No vulnerabilities reported

Install h2database

You can download it from GitHub, Maven.
You can use h2database like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the h2database component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

TutorialSQL commandsFunctions, aggregate functions, window functionsData types

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