Programmatic DreReplace in Autonomy IDOL Server

Whenever a field needs to be updated/replaced with a new one in the IDOL Server index the available options are

1. Re-index the data

2. Use DREREPLACE index command

3. Use DRECHANGEMETA index command if the fields to be changed are autnrank,database,date & expiredate

Re-indexing the data will override the existing data and the entire document will be updated. But re-indexing may not be always possible especially when the volume of data is huge. This is where DREREPLACE will be useful.

I have written DREREPLACE functionality using Autonomy Java ACI API which is available in the Autonomy's Customer Support Portal either as a separate JAR or bundled with Portal-In-A-Box & Retina WAR file.

The latest ACI API version is 4.9.5.

The following jar files needs to be in your classpath i.e., AutonomyACIAPI-4.9.5.jar, commons-codec-1.4.jar, commons-httpclient-3.1.jar, commons-logging-1.1.1.jar.

The DREREPLACE code is
import java.util.ArrayList;

import java.util.List;

import com.autonomy.aci.ActionParameter;

import com.autonomy.aci.exceptions.IndexingException;

import com.autonomy.aci.services.IndexingService;

public class DreReplace {

public static void main(String[] args) {

final String sIDOLServerHostIP = "127.0.0.1";

final int iIDOLServerIndexPort = 9001;

IndexingService indexingService = new IndexingService(

sIDOLServerHostIP, iIDOLServerIndexPort);

List lsActionParameters = new ArrayList();

StringBuilder sbDataFormation = new StringBuilder();

String sDocumentID = "1";

String sDREFieldName0 = "AUTHOR";

String sDREFieldValue0 = "mahesh";

sbDataFormation.append("#DREDOCID ").append(sDocumentID).append("\n");

sbDataFormation.append("#DREFIELDNAME ").append(sDREFieldName0)

.append("\n").append("#DREFIELDVALUE ").append(sDREFieldValue0)

.append("\n");

// this is the repeating part based on the no. of fields to be replaced

sbDataFormation.append("#DREENDDATA\n\n");

try {

indexingService.dreReplace(sbDataFormation.toString(),

lsActionParameters);

} catch (IndexingException indexe) {

indexe.printStackTrace();

}

}

}