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Motown Core
Ingo Pak edited this page May 7, 2014
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The Core is the heart of the system that keeps track of the state of the defined aggregates.
The state is kept in an Axon Event Store.
Sample configuration:
<axon:jpa-event-store id="eventStore"
data-source="dataSource"/>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName"
value="org.hsqldb.jdbcDriver"/>
<property name="url"
value="jdbc:hsqldb:mem:eventstore"/>
<property name="username"
value="sa"/>
<property name="password"
value="<empty>"/>
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource"
ref="dataSource"/>
<property name="packagesToScan"
value="org.axonframework.eventstore.jpa"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="database"
value="HSQL"/>
<property name="generateDdl"
value="true"/>
</bean>
</property>
</bean>
<bean id="commandTransactionManager"
class="org.axonframework.unitofwork.SpringTransactionManager">
<constructor-arg>
<bean class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory"
ref="entityManagerFactory"/>
</bean>
</constructor-arg>
</bean>
See the Axon documentation for more options and details on how to configure an event store.
The Core comes with an Axon based API, through which add-ons can communicate with the Core. See the [Core API](Core API) for more detailed information.