org.eclipse.smila.search.lucene.index.access.CountTotalOperation.java Source code

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Here is the source code for org.eclipse.smila.search.lucene.index.access.CountTotalOperation.java

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/***********************************************************************************************************************
 * Copyright (c) 2008 empolis GmbH and brox IT Solutions GmbH. All rights reserved. This program and the accompanying
 * materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: Ivan Churkin (brox IT Solutions GmbH) - initial creator
 **********************************************************************************************************************/
package org.eclipse.smila.search.lucene.index.access;

import org.apache.lucene.index.IndexReader;
import org.eclipse.smila.search.index.IndexException;

/**
 * The Class CountOperation.
 */
public class CountTotalOperation implements ISynchronizedOperation<IndexReader, Integer> {

    /**
     * {@inheritDoc}
     * 
     * @see org.eclipse.smila.search.lucene.index.access.ISynchronizedOperation#process(java.lang.Object)
     */
    public Integer process(final IndexReader object) throws IndexException {
        Integer docs;
        try {
            docs = object.numDocs();
        } catch (final Exception e) {
            throw new IndexException("Can't determine number of documents in index", e);
        }
        return docs;
    }
}