ystorefoundationpackage.domain.util.list.LuceneSearchBufferedList.java Source code

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Here is the source code for ystorefoundationpackage.domain.util.list.LuceneSearchBufferedList.java

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/*
 * [y] hybris Platform
 *
 * Copyright (c) 2000-2009 hybris AG
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of hybris
 * ("Confidential Information"). You shall not disclose such Confidential
 * Information and shall use it only in accordance with the terms of the
 * license agreement you entered into with hybris.
 * 
 *  
 */
package ystorefoundationpackage.domain.util.list;

import de.hybris.platform.cms.jalo.CmsManager;
import de.hybris.platform.jalo.JaloSession;
import de.hybris.platform.jalo.SessionContext;
import de.hybris.platform.lucenesearch.jalo.LuceneIndex;
import de.hybris.platform.lucenesearch.jalo.LuceneSearchResult;
import de.hybris.platform.lucenesearch.jalo.LucenesearchManager;
import de.hybris.platform.util.Utilities;

import java.util.List;

import org.apache.log4j.Logger;
import org.apache.lucene.search.BooleanQuery;

/**
 * 
 * 
 */
public class LuceneSearchBufferedList<V> extends SubsetBufferList<V> {
    private static final Logger log = Logger.getLogger(LuceneSearchBufferedList.class);

    private String term = null;
    private String orderBy = null;
    private String luceneIndex = null;
    private boolean isAscending = true;

    private transient List<Float> score = null;

    public LuceneSearchBufferedList(final String term, final String orderBy, final boolean isAscending) {
        super();
        this.term = term;
        this.orderBy = orderBy;
        this.isAscending = isAscending;
    }

    public void setLuceneIndex(final String index) {
        this.luceneIndex = index;
    }

    public String getLuceneIndex() {
        return this.luceneIndex;
    }

    public List<Float> getScoreList() {
        return this.score;
    }

    @Override
    protected List<V> fetchSubset(final int absoluteIndex, final int numberOfElements) {
        final LuceneIndex idx = this.getLuceneIndexInternal();

        final SessionContext ctx = JaloSession.getCurrentSession().getSessionContext();
        BooleanQuery.setMaxClauseCount(4096);
        LuceneSearchResult.setMaxHitsThreshold(numberOfElements);
        //      SearchResult result = new StandardSearchResult( Collections.EMPTY_LIST, 0, 0, 0 );
        LuceneSearchResult result = null;
        try {
            result = idx.searchItems(ctx, term, null, orderBy, isAscending, absoluteIndex, numberOfElements);
            //this.maxHitsExceeded = ((LuceneSearchResult)result).isMaxHitsExceeded();
            //this.setMaxHits(((LuceneSearchResult)result).getTotalCount());
        } catch (final de.hybris.platform.lucenesearch.jalo.ParseException e) {
            log.error("LuceneSearchControl: " + e.getMessage());
            //   Commented out: exception is way too much low level to be thrown to screen
            //   throw new de.hybris.jakarta.ext.lucenesearch.jalo.ParseException( e );
        } catch (final Exception e) {
            log.error("LuceneSearchControl: " + e.getMessage() + " \n" + Utilities.getStackTraceAsString(e));
        }

        this.score = new FakeSizeList<Float>(result.getScores(), super.size(), Float.valueOf(0));

        return result.getResult();
    }

    @Override
    protected int fetchTotalSize() {
        final LuceneIndex idx = this.getLuceneIndexInternal();

        final SessionContext ctx = JaloSession.getCurrentSession().getSessionContext();
        Integer result = Integer.valueOf(-1);
        try {
            //TODO:
            //unluckily getTotalCount from lucenesearchresult doesn't behave like flexiblesearchresult
            //LuceneSearchResult:  total returns size before applying postqueryfilter (which filters out restricted prods)
            //FlexibleSearchResult:total returns correct size

            result = Integer.valueOf(idx.searchItems(ctx, term, null, null, true, 0, -1).getTotalCount());
        } catch (final de.hybris.platform.lucenesearch.jalo.ParseException e) {
            log.error("LuceneSearchControl: " + e.getMessage());
        } catch (final Exception e) {
            log.error("LuceneSearchControl: " + e.getMessage() + " \n" + Utilities.getStackTraceAsString(e));
        }
        return result.intValue();
    }

    private LuceneIndex getLuceneIndexInternal() {
        final LuceneIndex result = (this.luceneIndex == null)
                ? CmsManager.getInstance().getActiveStore().getLuceneIndex()
                : LucenesearchManager.getInstance().getLuceneIndex(luceneIndex);
        return result;
    }

}