com.hs.mail.imap.dao.FlagUtils.java Source code

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Here is the source code for com.hs.mail.imap.dao.FlagUtils.java

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/*
 * Copyright 2010 the original author or authors.
 * 
 *  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 com.hs.mail.imap.dao;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

import javax.mail.Flags;

import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;

/**
 * Mapping between message's system flags and message table's column name
 * 
 * @author Won Chul Doh
 * @since Apr 27, 2010
 * 
 */
public class FlagUtils {

    private static Flags.Flag[] flagArray = { Flags.Flag.SEEN, Flags.Flag.ANSWERED, Flags.Flag.DELETED,
            Flags.Flag.FLAGGED, Flags.Flag.RECENT, Flags.Flag.DRAFT };

    private static String[] attrArray = { "seen", "answered", "deleted", "flagged", "recent", "draft" };

    static String getParam(Flags flags, Flags.Flag flag) {
        return flags.contains(flag) ? "Y" : "N";
    }

    static String getFlagColumnName(Flags.Flag flag) {
        for (int i = 0; i < flagArray.length; i++) {
            if (flag == flagArray[i]) {
                return attrArray[i];
            }
        }
        return null;
    }

    static Flags getFlags(ResultSet rs) throws SQLException {
        Flags flags = new Flags();
        for (int i = 0; i < attrArray.length; i++) {
            if ("Y".equals(rs.getString(attrArray[i]))) {
                flags.add(flagArray[i]);
            }
        }
        return flags;
    }

    @SuppressWarnings("unchecked")
    static String buildParams(Flags.Flag[] flags, boolean replace, boolean set, List params) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < flagArray.length; i++) {
            boolean contains = ArrayUtils.contains(flags, flagArray[i]);
            if (contains || replace) {
                sb.append(attrArray[i]).append("= ?,");
                params.add(replace ? (contains ? "Y" : "N") : (set ? "Y" : "N"));
            }
        }
        return StringUtils.stripEnd(sb.toString(), ",");
    }

}