framework.retrieval.engine.common.RetrievalUtil.java Source code

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Here is the source code for framework.retrieval.engine.common.RetrievalUtil.java

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/**
 * Copyright 2010 
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package framework.retrieval.engine.common;

import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.lucene.util.Version;

import framework.base.snoic.base.util.RandomSeed;
import framework.base.snoic.base.util.StringClass;
import framework.base.snoic.base.util.file.FileHelper;
import framework.retrieval.engine.RetrievalConstant;
import framework.retrieval.engine.RetrievalException;

/**
 * 
 *
 * @author 
 *
 *
 */

public class RetrievalUtil {
    private static FileHelper fileHelper = new FileHelper();

    private RetrievalUtil() {

    }

    @SuppressWarnings("unchecked")
    public static Log getLog(Class clazz) {
        Log log = LogFactory.getLog(clazz);
        return log;
    }

    public static void debugLog(Log log, Object msg) {
        if (log.isDebugEnabled()) {
            log.debug(msg);
        }
    }

    public static void infoLog(Log log, Object msg) {
        if (log.isInfoEnabled()) {
            log.info(msg);
        }
    }

    public static void errorLog(Log log, String msg) {
        if (log.isErrorEnabled()) {
            log.error(msg);
        }
    }

    public static void errorLog(Log log, Throwable e) {
        if (log.isErrorEnabled()) {
            log.error(e);
        }
    }

    public static void errorLog(Log log, String msg, Throwable e) {
        if (log.isErrorEnabled()) {
            log.error(msg, e);
        }
    }

    /**
     * ???
     * @param baseIndexPath
     * @param indexPathType
     * @return
     */
    public static String getIndexPath(String baseIndexPath, String indexPathType) {
        if (indexPathType == null) {
            throw new RetrievalException("??!!!");
        }
        String path = StringClass.getFormatPath(baseIndexPath + "/" + String.valueOf(indexPathType).toUpperCase());
        fileHelper.createDir(path);
        return path;
    }

    /**
     * ???ID
     * @return
     */
    public static String getIndexId() {
        return RandomSeed.getSeed(32);
    }

    /**
     * ???ID
     * @return
     */
    public static String getFileName() {
        return RandomSeed.getSeed(16);
    }

    /**
     * HTML?
     * @param htmlContent
     * @param charsetName
     * @return
     */
    public static String parseHTML(String htmlContent, String charsetName) {
        if (null == htmlContent || "".equals(htmlContent.trim())) {
            return htmlContent;
        }

        StringBuffer txt = new StringBuffer();
        Pattern pattern = Pattern.compile("<[^<|^>]*>", Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(htmlContent);
        while (matcher.find()) {
            String group = matcher.group();
            if (group.matches("<[\\s]*>")) {
                matcher.appendReplacement(txt, group);
            } else {
                matcher.appendReplacement(txt, "");
            }
        }

        matcher.appendTail(txt);
        String str = txt.toString();

        return str;
    }

    /**
     * ?
     * @param fileName
     * @return
     */
    public static String getFileType(String fileName) {
        if (fileName.indexOf(".") < 0) {
            return "";
        }

        int extendIndex = 0;
        extendIndex = fileName.lastIndexOf(".");
        String theExtend = "";
        theExtend = fileName.substring(extendIndex + 1, fileName.length()).toUpperCase();

        return theExtend;
    }

    /**
     * ???
     * @param fieldNames
     * @return
     */
    @SuppressWarnings("unchecked")
    public static List<String> getAllFields(String fieldNames) {
        fieldNames = StringClass.getString(fieldNames);
        if (fieldNames.equals("")) {
            return null;
        }
        List<String> list = StringClass.getInterString(RetrievalConstant.DEFAULT_INDEX_FIELD_NAME_SPLIT,
                fieldNames);
        return list;
    }

    /**
     * ??
     * @param versionType
     * @return
     */
    public static Version getVersion(String versionType) {
        versionType = StringClass.getString(versionType).toUpperCase();
        if (versionType.equals("")) {
            throw new RetrievalException("?!!!!");
        } else {
            if (versionType.equals("LUCENE_20")) {
                return Version.LUCENE_20;
            } else if (versionType.equals("LUCENE_21")) {
                return Version.LUCENE_21;
            } else if (versionType.equals("LUCENE_22")) {
                return Version.LUCENE_22;
            } else if (versionType.equals("LUCENE_23")) {
                return Version.LUCENE_23;
            } else if (versionType.equals("LUCENE_24")) {
                return Version.LUCENE_24;
            } else if (versionType.equals("LUCENE_29")) {
                return Version.LUCENE_29;
            } else if (versionType.equals("LUCENE_30")) {
                return Version.LUCENE_30;
            } else if (versionType.equals("LUCENE_36")) {
                return Version.LUCENE_36;
            }
            throw new RetrievalException(versionType + " ?Lucene?!!!");
        }
    }
}