com.liferay.portal.util.LuceneFields.java Source code

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Here is the source code for com.liferay.portal.util.LuceneFields.java

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/**
 * Copyright (c) 2000-2005 Liferay, LLC. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.liferay.portal.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.util.Date;

import javax.swing.text.DefaultStyledDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.rtf.RTFEditorKit;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.lucene.document.DateField;
import org.apache.lucene.document.Field;
import org.apache.poi.hdf.extractor.WordDocument;
import org.apache.pdfbox.pdfparser.PDFParser;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.util.PDFTextStripper;

import com.liferay.util.poi.XLSTextStripper;

/**
 * <a href="LuceneFields.java.html"><b><i>View Source</i></b></a>
 *
 * @author  Brian Wing Shun Chan
 * @version $Revision: 1.5 $
 *
 */
public class LuceneFields {

    public static final String UID = "uid";

    public static final String COMPANY_ID = "companyId";
    public static final String PORTLET_ID = "portletId";
    public static final String GROUP_ID = "groupId";

    public static final String TITLE = "title";
    public static final String CONTENT = "content";

    public static final String MODIFIED = "modified";

    public static String getUID(String portletId, String field1) {
        return getUID(portletId, field1, null);
    }

    public static String getUID(String portletId, String field1, String field2) {

        String uid = portletId + _UID_PORTLET + field1;

        if (field2 != null) {
            uid += _UID_FIELD + field2;
        }

        return uid;
    }

    public static Field getDate(String field) {
        return getDate(field, new Date());
    }

    public static Field getDate(String field, Date date) {
        if (date == null) {
            return getDate(field);
        } else {
            return new Field(field, DateField.dateToString(date), Field.Store.YES, Field.Index.NOT_ANALYZED);
        }
    }

    public static Field getFile(String field, File file, String fileExt) throws IOException {

        fileExt = fileExt.toLowerCase();

        FileInputStream fis = new FileInputStream(file);
        Reader reader = new BufferedReader(new InputStreamReader(fis));

        String text = null;

        if (fileExt.equals(".doc")) {
            try {
                WordDocument wordDocument = new WordDocument(fis);

                StringWriter stringWriter = new StringWriter();

                wordDocument.writeAllText(stringWriter);

                text = stringWriter.toString();

                stringWriter.close();
            } catch (Exception e) {
                _log.error(e.getMessage());
            }
        } else if (fileExt.equals(".htm") || fileExt.equals(".html")) {
            try {
                DefaultStyledDocument dsd = new DefaultStyledDocument();

                HTMLEditorKit htmlEditorKit = new HTMLEditorKit();
                htmlEditorKit.read(reader, dsd, 0);

                text = dsd.getText(0, dsd.getLength());
            } catch (Exception e) {
                _log.error(e.getMessage());
            }
        } else if (fileExt.equals(".pdf")) {
            try {
                PDFParser parser = new PDFParser(fis);
                parser.parse();

                PDDocument pdDoc = parser.getPDDocument();

                StringWriter stringWriter = new StringWriter();

                PDFTextStripper stripper = new PDFTextStripper();
                stripper.setLineSeparator("\n");
                stripper.writeText(pdDoc, stringWriter);

                text = stringWriter.toString();

                stringWriter.close();
                pdDoc.close();
            } catch (Exception e) {
                _log.error(e.getMessage());
            }
        } else if (fileExt.equals(".rtf")) {
            try {
                DefaultStyledDocument dsd = new DefaultStyledDocument();

                RTFEditorKit rtfEditorKit = new RTFEditorKit();
                rtfEditorKit.read(reader, dsd, 0);

                text = dsd.getText(0, dsd.getLength());
            } catch (Exception e) {
                _log.error(e.getMessage());
            }
        } else if (fileExt.equals(".xls")) {
            try {
                XLSTextStripper stripper = new XLSTextStripper(fis);

                text = stripper.getText();
            } catch (Exception e) {
                _log.error(e.getMessage());
            }
        }

        if (text != null) {
            return new Field(field, text, Field.Store.YES, Field.Index.NOT_ANALYZED);
        } else {
            return new Field(field, reader);
        }
    }

    public static Field getKeyword(String field, String keyword) {
        //keyword = KeywordsUtil.escape(keyword);

        Field fieldObj = new Field(field, keyword, Field.Store.YES, Field.Index.NOT_ANALYZED);

        fieldObj.setBoost(0);

        return fieldObj;
    }

    private static final Log _log = LogFactory.getLog(LuceneFields.class);

    private static final String _UID_PORTLET = "_PORTLET_";
    private static final String _UID_FIELD = "_FIELD_";

}