com.liferay.portal.kernel.dao.jdbc.SmartResultSet Maven / Gradle / Ivy

/**
 * Copyright (c) 2000-2009 Liferay, Inc. 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.kernel.dao.jdbc;

import com.liferay.portal.kernel.util.CharPool;

import java.sql.Date;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Timestamp;

import java.util.HashMap;
import java.util.Map;

/**
 * View Source
 *
 * @author Minhchau Dang
 * @author Brian Wing Shun Chan
 *
 */
public class SmartResultSet {

	public SmartResultSet(ResultSet rs) throws SQLException {
		_rs = rs;
		_metaData = _rs.getMetaData();
		_columnCount = _metaData.getColumnCount();
		_columnIndexCache = new HashMap();
	}

	public int findColumn(String columnName) throws SQLException {
		Integer columnIndex = _columnIndexCache.get(columnName);

		if (columnIndex != null) {
			return columnIndex;
		}

		// Check for the full column name

		for (int i = 1; i <= _columnCount; ++i) {
			String availableName = _metaData.getColumnName(i);

			if (availableName.equalsIgnoreCase(columnName)) {
				_columnIndexCache.put(columnName, i);

				return i;
			}
		}

		// Check for a shortened column name

		int pos = columnName.indexOf(CharPool.PERIOD);

		if (pos != -1) {
			String shortName = columnName.substring(pos + 1);

			for (int i = 1; i <= _columnCount; ++i) {
				String availableName = _metaData.getColumnName(i);

				if (availableName.equalsIgnoreCase(shortName)) {
					_columnIndexCache.put(columnName, i);

					return i;
				}
			}
		}

		// Let the result set figure it out

		columnIndex = _rs.findColumn(columnName);

		_columnIndexCache.put(columnName, columnIndex);

		return columnIndex;
	}

	public boolean first() throws SQLException {
		return _rs.first();
	}

	public Date getDate(int columnIndex) throws SQLException {
		return _rs.getDate(columnIndex);
	}

	public Date getDate(String columnName) throws SQLException {
		int columnIndex = findColumn(columnName);

		return _rs.getDate(columnIndex);
	}

	public double getDouble(int columnIndex) throws SQLException {
		return _rs.getDouble(columnIndex);
	}

	public double getDouble(String columnName) throws SQLException {
		int columnIndex = findColumn(columnName);

		return _rs.getDouble(columnIndex);
	}

	public float getFloat(int columnIndex) throws SQLException {
		return _rs.getFloat(columnIndex);
	}

	public float getFloat(String columnName) throws SQLException {
		int columnIndex = findColumn(columnName);

		return _rs.getFloat(columnIndex);
	}

	public int getInt(int columnIndex) throws SQLException {
		return _rs.getInt(columnIndex);
	}

	public int getInt(String columnName) throws SQLException {
		int columnIndex = findColumn(columnName);

		return _rs.getInt(columnIndex);
	}

	public long getLong(int columnIndex) throws SQLException {
		return _rs.getLong(columnIndex);
	}

	public long getLong(String columnName) throws SQLException {
		int columnIndex = findColumn(columnName);

		return _rs.getLong(columnIndex);
	}

	public short getShort(int columnIndex) throws SQLException {
		return _rs.getShort(columnIndex);
	}

	public short getShort(String columnName) throws SQLException {
		int columnIndex = findColumn(columnName);

		return _rs.getShort(columnIndex);
	}

	public String getString(int columnIndex) throws SQLException {
		return _rs.getString(columnIndex);
	}

	public String getString(String columnName) throws SQLException {
		int columnIndex = findColumn(columnName);

		return _rs.getString(columnIndex);
	}

	public Timestamp getTimestamp(int columnIndex) throws SQLException {
		return _rs.getTimestamp(columnIndex);
	}

	public Timestamp getTimestamp(String columnName) throws SQLException {
		int columnIndex = findColumn(columnName);

		return _rs.getTimestamp(columnIndex);
	}

	public boolean last() throws SQLException {
		return _rs.last();
	}

	public boolean next() throws SQLException {
		return _rs.next();
	}

	public boolean previous() throws SQLException {
		return _rs.previous();
	}

	private final ResultSet _rs;
	private final ResultSetMetaData _metaData;
	private final int _columnCount;
	private final Map _columnIndexCache;

}