Elastic Social Manual / Version 2101
Table Of ContentsCoreMedia provides BOM POMs for simple dependency management with Apache Maven. To use Elastic Social artifacts, your POM needs to import the BOM POMs. The BOM POMs ensure that you use artifacts of compatible versions and also manage the scope of all Elastic Social dependencies. API modules have compile scope, test utility modules have test scope and all other modules have runtime scope.
When using Elastic Social, you need to define dependencies to the API modules and to the implementation modules you are going to use. A typical usage of Elastic Social dependencies is shown below. Besides the API dependencies, the Elastic Core implementations for MongoDB, Apache Solr and Spring Security are included as well as the Elastic Social implementation module. For testing a dependency to the Elastic Core test utility module is declared.
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
...
<dependencies>
...
<!-- allowed Elastic Core and Elastic Social dependencies:
core-api, social-api: compile
core-test: test
others: runtime
-->
<dependency>
<groupId>com.coremedia.elastic.core</groupId>
<artifactId>core-api</artifactId>
</dependency>
<dependency>
<groupId>com.coremedia.elastic.social</groupId>
<artifactId>social-api</artifactId>
</dependency>
<dependency>
<groupId>com.coremedia.elastic.core</groupId>
<artifactId>core-solr</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.coremedia.elastic.core</groupId>
<artifactId>core-mongodb</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.coremedia.elastic.social</groupId>
<artifactId>social-spring-security</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.coremedia.elastic.social</groupId>
<artifactId>social-impl</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.coremedia.elastic.core</groupId>
<artifactId>core-test</artifactId>
<scope>test</scope>
</dependency>
...
</dependencies>
...
</project>
Example 4.13. Typical Elastic Social dependencies
Application context setup
To configure Elastic Social you need to enable Spring classpath scanning for the
package com.coremedia.elastic. Configuration properties will be accessed through the Spring framework Environment which
collects all property sources. Two additional beans need to be configured. A bean of type
org.springframework.mail.javamail.JavaMailSender needs to be defined for the
MailService and an implementation of a MailTemplateService needs
to be provided. An example for a Spring configuration is shown below. If you use the
InMemoryMailTemplateService, you need to have a dependency on the Elastic Social
social-base module.
<?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:util="http://www.springframework.org/schema/util"
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.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util.xsd">
<context:component-scan base-package="com.coremedia.elastic"/>
<bean class="org.springframework.mail.javamail. \
JavaMailSenderImpl">
<property name="host" value="mail.example.com"/>
<property name="port" value="25"/>
</bean>
<bean class="com.coremedia.elastic.social. \
base.mail.InMemoryMailTemplateService">
<property name="mailTemplates">
<set>
<bean class="com.coremedia.elastic.social. \
base.mail.InMemoryMailTemplate">
<property name="name">
<util:constant static-field="com.coremedia.elastic. \
social.api.MailTemplates.COMMENT_REJECTED"/>
</property>
<property name="locale" value="ROOT"/>
<property name="from" value="reject-contribution@example.com"/>
<property name="subject" value="Rejected contribution \
at example.com"/>
<property name="text">
<value><![CDATA[Hello ${name},
your comment below from ${commentDate} has not been published:
"${commentText}"
Please comply to our community policy when writing contributions.
Kind regards,
the editors
]]></value>
</property>
</bean>
</set>
</property>
</bean>
</beans>
Example 4.14. Application context Spring example configuration
If you have a CoreMedia CAE application, just name the property file
/WEB-INF/component-elastic.properties and its properties will be automatically be loaded
without the need to configure a PropertyPlaceholderConfigurer.
Note that default values cannot be configured using a standard Spring PropertiesSourcesPlaceholderConfigurer as
shown in Example 4.15, “Invalid configuration setup”.
<context:property-placeholder location="classpath:/com/acme/es-defaults.properties"/>
Example 4.15. Invalid configuration setup
You must use a custom configuration class and Spring annotations
org.springframework.context.annotation.Configuration and
org.springframework.context.annotation.PropertySource instead, as shown in
Example 4.16, “Default configuration setup example”.
@Configuration(proxyBeanMethods = false)
@PropertySource(name = "es-defaults", value = {"classpath:/com/acme/es-defaults.properties"})
public class MyElasticSocialConfiguration {
...
}Example 4.16. Default configuration setup example
An example of a /com/acme/es-defaults.properties file used by the Spring configuration
above is shown below:
mongodb.prefix=example-project-prefix
mongodb.client-uri=mongodb://mongo1.example.com:27017, \
mongo2.example.com:27017,mongo3.example.com:27017
mongodb.models.create-indexes=true
taskqueues.worker-node=true
elastic.solr.indexPrefix=example-project-prefix
elastic.solr.url=http://solr.example.com:40080/solr
Example 4.17. Example of the /com/acme/es-defaults.properties file
