Question

My application uses sequences, and I’m trying to set up junit test environment with HSQLDB in-mem database that would have a similar setup. This is how I’ve configured the sequences and their creation:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd">
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" lazy-init="true"
      destroy-method="close">
        <property name="driverClassName" value="org.hsqldb.jdbcDriver" />
        <property name="url" value="jdbc:hsqldb:mem:test"/>
        <property name="username" value="sa" />
        <property name="password" value="" />
    </bean>
    <bean id="logSeqIncrementer" class="org.springframework.jdbc.support.incrementer.HsqlSequenceMaxValueIncrementer">
        <property name="dataSource" ref="dataSource" />
        <property name="incrementerName" value="public.agent_logs_seq" />
    </bean>

    <bean id="offerSeqIncrementer" class="org.springframework.jdbc.support.incrementer.HsqlSequenceMaxValueIncrementer">
        <property name="dataSource" ref="dataSource" />
        <property name="incrementerName" value="public.offers_seq" />
    </bean>
    <jdbc:embedded-database
        id="test"
        type="HSQL">
        <jdbc:script
            location="classpath:/create-ddl.sql" />
    </jdbc:embedded-database>   
</beans>

And contents of create-ddl.sql:

CREATE SEQUENCE public.agent_logs_seq;

Results in

java.sql.SQLException: Sequence already exists in statement

but if I comment that out, I get

java.lang.AssertionError: Unexpected exception:
org.springframework.dao.DataAccessResourceFailureException:
    Could not obtain sequence value; nested exception is
java.sql.SQLException: Sequence not found:
    AGENT_LOGS_SEQ in statement [call next value for public.agent_logs_seq]

The way I’m trying to use the sequence:

DataFieldMaxValueIncrementer incrementer =
    (DataFieldMaxValueIncrementer) context.getBean("logSeqIncrementer");
Integer logId = Integer.valueOf(incrementer.nextIntValue()); 

Edit: changed the details above so that correct sequence class would be used. It didn’t solve the issue, however.

Answer 1

I had a similar problem which is raised here.

There were various solutions offered. The H2 Database seemed interesting. In the end I manually dropped and then create the sequences in a script.