001/* 
002 * JKNIV, SQLegance keeping queries maintainable.
003 * 
004 * Copyright (C) 2017, the original author or authors.
005 *
006 * This library is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 2.1 of the License.
010 * 
011 * This library is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014 * Lesser General Public License for more details.
015 * 
016 * You should have received a copy of the GNU Lesser General Public
017 * License along with this library; if not, write to the Free Software Foundation, Inc., 
018 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
019 */
020package net.sf.jkniv.sqlegance.params;
021
022import java.util.ArrayList;
023import java.util.List;
024import java.util.regex.Matcher;
025import java.util.regex.Pattern;
026
027public class ParamParserHashMark extends AbstractParamParser
028{
029    private static final Pattern PATTERN_PARAMS = Pattern.compile(REGEX_HASH_MARK,
030            Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
031    
032    private static ParamParser INSTANCE = new ParamParserHashMark();
033
034    private ParamParserHashMark()
035    {
036        //super(REGEX_HASH_MARK);
037    }
038    
039    public static ParamParser getInstance()
040    {
041        return INSTANCE;
042    }
043
044    
045    @Override
046    Pattern getPatternParams()
047    {
048        return PATTERN_PARAMS;
049    }
050    
051    @Override
052    public String[] find(String query)
053    {
054        return parserHash(query).toArray(new String[0]);
055    }
056    
057    @Override
058    public ParamMarkType getType()
059    {
060        return ParamMarkType.HASH;
061    }
062    
063    private List<String> parserHash(final String sentence)
064    {
065        List<String> params = new ArrayList<String>();
066        Matcher matcherHash = PATTERN_PARAMS.matcher(sentence);
067        int i = 0;
068        while (matcherHash.find())
069        {
070            if (matcherHash.group().startsWith("'"))
071            {
072                continue;
073            }
074            else if (matcherHash.group().startsWith(":in:"))
075            {
076                // :in:names -> in:names (subSequence)
077                params.add(i++, sentence.subSequence(matcherHash.start() + 1, matcherHash.end()).toString());
078                continue;
079            }
080            //System.out.printf("group[%s] [%s]\n", matcherHash.group(), sentence.subSequence(matcherHash.start() + 1, matcherHash.end()).toString());
081            params.add(i++, sentence.subSequence(matcherHash.start() + 2, matcherHash.end() - 1).toString());
082        }
083        return params;
084    }
085    
086}