java/jdbc-loopback-driver/src/info/globalcode/jdbc/loopback/ResultSetMetaData.java
author František Kučera <franta-hg@frantovo.cz>
Tue, 26 Feb 2019 18:19:49 +0100
branchv_0
changeset 236 a3ec71fa8e17
parent 171 701ec4db43fb
permissions -rw-r--r--
Avoid reusing/rewriting the DB connection properties.
There was weird random errors while testing connection to multiple DB in parallel when one of them was meta connection to same DB connection.
Two kinds of exception: 1) missing password 2) „Passing DB password as CLI parameter is insecure!“
     1 /**
     2  * SQL-DK
     3  * Copyright © 2014 František Kučera (frantovo.cz)
     4  *
     5  * This program is free software: you can redistribute it and/or modify
     6  * it under the terms of the GNU General Public License as published by
     7  * the Free Software Foundation, either version 3 of the License, or
     8  * (at your option) any later version.
     9  *
    10  * This program is distributed in the hope that it will be useful,
    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  * GNU General Public License for more details.
    14  *
    15  * You should have received a copy of the GNU General Public License
    16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
    17  */
    18 package info.globalcode.jdbc.loopback;
    19 
    20 import java.sql.SQLException;
    21 import java.util.ArrayList;
    22 import java.util.List;
    23 
    24 /**
    25  *
    26  * @author Ing. František Kučera (frantovo.cz)
    27  */
    28 public class ResultSetMetaData extends AbstractResultSetMetaData {
    29 
    30 	private List<ColumnDescriptor> columns = new ArrayList<>();
    31 
    32 	public void addColumn(ColumnDescriptor cd) {
    33 		columns.add(cd);
    34 	}
    35 
    36 	@Override
    37 	public int getColumnCount() throws SQLException {
    38 		return columns.size();
    39 	}
    40 
    41 	@Override
    42 	public String getColumnLabel(int column) throws SQLException {
    43 		return columns.get(column - 1).label;
    44 	}
    45 
    46 	@Override
    47 	public String getColumnName(int column) throws SQLException {
    48 		return columns.get(column - 1).name;
    49 	}
    50 
    51 	@Override
    52 	public int getColumnType(int column) throws SQLException {
    53 		return columns.get(column - 1).type;
    54 	}
    55 
    56 	@Override
    57 	public String getColumnTypeName(int column) throws SQLException {
    58 		return columns.get(column - 1).typeName;
    59 	}
    60 
    61 	public static class ColumnDescriptor {
    62 
    63 		private final int type;
    64 		private final String typeName;
    65 		private final String label;
    66 		private final String name;
    67 
    68 		public ColumnDescriptor(int type, String typeName, String label, String name) {
    69 			this.type = type;
    70 			this.typeName = typeName;
    71 			this.label = label;
    72 			this.name = name;
    73 		}
    74 	}
    75 }