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package eu.dnetlib.msro.workflows.nodes.index;
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import java.io.IOException;
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import java.io.StringReader;
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import java.io.StringWriter;
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import javax.annotation.Resource;
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import javax.xml.transform.Transformer;
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import javax.xml.transform.TransformerConfigurationException;
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import javax.xml.transform.TransformerException;
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import javax.xml.transform.TransformerFactory;
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import javax.xml.transform.dom.DOMResult;
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import javax.xml.transform.dom.DOMSource;
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import javax.xml.transform.stream.StreamResult;
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import javax.xml.transform.stream.StreamSource;
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import javax.xml.ws.wsaddressing.W3CEndpointReference;
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import org.apache.commons.codec.binary.Base64;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.beans.factory.annotation.Required;
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import com.googlecode.sarasvati.NodeToken;
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import eu.dnetlib.data.provision.index.rmi.IndexService;
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import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpDocumentNotFoundException;
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import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpException;
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import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpService;
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import eu.dnetlib.enabling.locators.UniqueServiceLocator;
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import eu.dnetlib.enabling.resultset.XSLTMappedResultSetFactory;
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import eu.dnetlib.enabling.resultset.client.utils.EPRUtils;
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import eu.dnetlib.enabling.resultset.rmi.ResultSetException;
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import eu.dnetlib.enabling.tools.blackboard.BlackboardJob;
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import eu.dnetlib.msro.workflows.nodes.BlackboardJobNode;
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import eu.dnetlib.msro.workflows.nodes.ProgressJobNode;
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import eu.dnetlib.msro.workflows.resultset.ProcessCountingResultSetFactory;
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import eu.dnetlib.msro.workflows.util.ProgressProvider;
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import eu.dnetlib.msro.workflows.util.ResultsetProgressProvider;
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public class UpdateIndexJobNode extends BlackboardJobNode implements ProgressJobNode {
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private static final Log log = LogFactory.getLog(UpdateIndexJobNode.class);
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private String eprParam;
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private String indexId;
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private String format;
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private String layout;
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private String feedingType;
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private String defaultIndexId;
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/**
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* xslt mapped resultset factory.
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*/
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private XSLTMappedResultSetFactory xsltRSFactory;
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private ProcessCountingResultSetFactory processCountingResultSetFactory;
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private ResultsetProgressProvider progressProvider;
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/**
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* Stylesheet which transforms a layout to another stylesheet which converts a input record to a index record.
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*/
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private org.springframework.core.io.Resource layoutToRecordStylesheet;
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/**
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* service locator.
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*/
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@Resource
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private UniqueServiceLocator serviceLocator;
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@Override
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protected String obtainServiceId(final NodeToken token) {
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return getServiceLocator().getServiceId(IndexService.class);
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}
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@Override
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protected void prepareJob(final BlackboardJob job, final NodeToken token) throws ResultSetException, ISLookUpException, IOException, TransformerException {
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log.info("preparing blackboard job update index: " + getIndexId());
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final W3CEndpointReference epr = new EPRUtils().getEpr(token.getEnv().getAttribute(getEprParam()));
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final W3CEndpointReference mappedEpr = prepareForIndexing(epr, getFormat(), getLayout());
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progressProvider = processCountingResultSetFactory.createProgressProvider(token.getProcess(), mappedEpr);
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job.setAction("FEED");
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job.getParameters().put("resultset_epr", encode(progressProvider.getEpr().toString()));
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job.getParameters().put("id", getIndexId());
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job.getParameters().put("feeding_type", getFeedingType());
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job.getParameters().put("backend_Id", defaultIndexId);
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}
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// helpers
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/**
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* Transforms each mdstore record into a index record.
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*
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* @param mdStoreRsetEpr
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* mdstore resulsetset
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* @param layout
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* layout
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* @param format
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* format
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* @return resultset with transformed records
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* @throws ISLookUpException
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* could happen
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* @throws IOException
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* could happen
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* @throws TransformerException
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* could happen
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*/
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protected W3CEndpointReference prepareForIndexing(final W3CEndpointReference mdStoreRsetEpr, final String format, final String layout)
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throws ISLookUpException, IOException, TransformerException {
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final TransformerFactory factory = TransformerFactory.newInstance();
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final Transformer layoutTransformer = factory.newTransformer(new StreamSource(getLayoutToRecordStylesheet().getInputStream()));
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final DOMResult layoutToXsltXslt = new DOMResult();
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layoutTransformer.setParameter("format", format);
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layoutTransformer.transform(new StreamSource(new StringReader(getLayoutSource(format, layout))), layoutToXsltXslt);
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dumpXslt(factory, layoutToXsltXslt);
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return getXsltRSFactory().createMappedResultSet(mdStoreRsetEpr, new DOMSource(layoutToXsltXslt.getNode()),
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"dynamic layout xslt for " + format + ", " + layout);
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}
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private String getLayoutSource(final String format, final String layout) throws ISLookUpDocumentNotFoundException, ISLookUpException {
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return serviceLocator.getService(ISLookUpService.class).getResourceProfileByQuery(
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"collection('')//RESOURCE_PROFILE[.//RESOURCE_TYPE/@value = 'MDFormatDSResourceType' and .//NAME='" + format + "']//LAYOUT[@name='" + layout
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+ "']");
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}
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private void dumpXslt(final TransformerFactory factory, final DOMResult layoutToXsltXslt) throws TransformerConfigurationException, TransformerException {
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if (log.isDebugEnabled()) {
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final StringWriter buffer = new StringWriter();
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factory.newTransformer().transform(new DOMSource(layoutToXsltXslt.getNode()), new StreamResult(buffer));
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log.debug(buffer.toString());
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}
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}
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private String encode(final String epr) {
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return new String(Base64.encodeBase64(epr.getBytes()));
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}
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// setters and getters
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public String getIndexId() {
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return indexId;
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}
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public void setIndexId(final String indexId) {
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this.indexId = indexId;
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}
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public String getEprParam() {
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return eprParam;
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}
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public void setEprParam(final String eprParam) {
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this.eprParam = eprParam;
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}
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public String getFeedingType() {
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return feedingType;
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}
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public void setFeedingType(final String feedingType) {
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this.feedingType = feedingType;
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}
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public ProcessCountingResultSetFactory getProcessCountingResultSetFactory() {
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return processCountingResultSetFactory;
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}
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@Required
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public void setProcessCountingResultSetFactory(final ProcessCountingResultSetFactory processCountingResultSetFactory) {
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this.processCountingResultSetFactory = processCountingResultSetFactory;
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}
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@Override
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public ProgressProvider getProgressProvider() {
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return progressProvider;
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}
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public org.springframework.core.io.Resource getLayoutToRecordStylesheet() {
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return layoutToRecordStylesheet;
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}
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@Required
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public void setLayoutToRecordStylesheet(final org.springframework.core.io.Resource layoutToRecordStylesheet) {
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this.layoutToRecordStylesheet = layoutToRecordStylesheet;
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}
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public String getFormat() {
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return format;
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}
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public void setFormat(final String format) {
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this.format = format;
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}
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public String getLayout() {
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return layout;
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}
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public void setLayout(final String layout) {
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this.layout = layout;
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}
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public XSLTMappedResultSetFactory getXsltRSFactory() {
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return xsltRSFactory;
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}
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@Required
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public void setXsltRSFactory(final XSLTMappedResultSetFactory xsltRSFactory) {
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this.xsltRSFactory = xsltRSFactory;
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}
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/**
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* @return the defaultIndexId
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*/
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public String getDefaultIndexId() {
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return defaultIndexId;
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}
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/**
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* @param defaultIndexId
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* the defaultIndexId to set
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*/
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@Required
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public void setDefaultIndexId(final String defaultIndexId) {
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this.defaultIndexId = defaultIndexId;
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}
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}
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