在xml mapper配置中用mybatis中的HikariConfig配置HikariCp dataSource

Question

I am trying to configure HikariCp in mybatis using xml configuration

I want to know hoe to set the hikariCongig object in object in the mapper configuration.

my config looks like this:

<environment id="development">
            <transactionManager type="JDBC" />
            <dataSource type="com.xyz.config.HikariCPDataSourceFactory" >
                <property name="jdbcUrl" value="jdbc:postgresql://localhost:5432/beta-prod-db" />
                <property name="username" value="postgres" />
                <property name="password" value="${password}" />
                <property name="poolName" value="test"/>
                <property name="maxPoolSize" value="20" />
                <property name="registerMbeans" value="true"/>
                <property name="minimumIdle" value="5"/>
            </dataSource>
        </environment>

HikariCPDataSourceFactory.java

public class HikariCPDataSourceFactory extends PooledDataSourceFactory {
    public HikariCPDataSourceFactory() {
        //HikariConfig hikariConfig = new HikariConfig();
        this.dataSource = new HikariDataSource();
    }
}

i dont find any online article hat shows how to set the hikariConfig object in hikarIDataSource object through xml configuration.

using Spring i can crearte a bean for hikariConfig and pass it as a parameter in hikariDataSource object, but here i am not using spring so need to find a way with xml.

Without hikariConfig object if i try to get the HikariPoolMXBean object from datSource i get the exception org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.lang.IllegalArgumentException: dataSource or dataSourceClassName or jdbcUrl is required. org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.lang.IllegalArgumentException: dataSource or dataSourceClassName or jdbcUrl is required.

HikariCP 1.4.0 MBean InstanceNotFoundException

this article says it only works when i set the hikariConfig Object

Answer 1

i couldnt find a way to configure the hikariConfig in xml Here is the workaround i used that works well for me.

  HikariDataSource hikariDataSource = null;
  HikariConfig hikariConfig = new HikariConfig();
  dataSource.copyStateTo(hikariConfig);
  hikariDataSource = new HikariDataSource(hikariConfig);

once i get the dataSource object i copy the state to a hikariConfig object and create new dataSource object using it. Also we can make it singleton so only one instance is created.