This section describes the necessary steps to make the CAE Feeder feed content bean data to a different search engine or another external system. The default integration uses Apache Solr but the CAE Feeder provides an Indexer interface that can be implemented to feed other external systems such as a search engine that is integrated in your company's IT infrastructure.

The following simple example explains how you can replace the standard Apache Solr indexer with a custom indexer that just writes messages to the log file.

      <?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">
  <parent>
    ...
  </parent>

  <modelVersion>4.0.0</modelVersion>
  <artifactId>caefeeder-custom-component</artifactId>

  <dependencies>
    <dependency>
      <groupId>com.coremedia.cms</groupId>
      <artifactId>caefeeder-base-component</artifactId>
      <scope>runtime</scope>
    </dependency>

    <dependency>
      <groupId>com.coremedia.cms</groupId>
      <artifactId>cap-feeder-api</artifactId>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
    </dependency>

  </dependencies>
</project>

    

      package com.customer;
 
import com.coremedia.cap.feeder.Feedable;
import com.coremedia.cap.feeder.FeedableElement;
import com.coremedia.cap.feeder.index.IndexException;
import com.coremedia.cap.feeder.index.IndexerResult;
import com.coremedia.cap.feeder.index.direct.DirectIndexerBase;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
 
public class LogIndexer extends DirectIndexerBase {
  private static final Logger LOG 
    = LoggerFactory.getLogger(LogIndexer.class);
  
  public IndexerResult index(
      Collection<? extends Feedable> feedables, 
      Collection<String> removeIds) throws IndexException {
 
    if (LOG.isInfoEnabled()) {
      for (Feedable feedable: feedables) {
        Collection<FeedableElement> elements
          = feedable.getElements();
        Map<String, Object> values
          = new HashMap<>(elements.size());
        for (FeedableElement element: elements) {
          values.put(element.getName(), element.getValue());
        }
        LOG.info("Updating {} with {}", 
          feedable.getId(), values);
      }
      if (!removeIds.isEmpty()) {
        LOG.info("Removing {}", removeIds);
      }
    }
    return IndexerResult.persisted();
  }
 
  public String getDocumentInfo(String s) throws IndexException {
    return null;
  }
}


    

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
">
 
  <bean id="feederIndexer" class="com.customer.LogIndexer"/>
</beans>

<logger name="com.customer" additivity="false" level="debug">
<appender-ref ref="file"/>
</logger>