InfoLister: sort rows in --list-java-properties and --list-environment-variables
3 * Copyright © 2013 František Kučera (frantovo.cz)
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.
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.
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/>.
18 package info.globalcode.sql.dk;
20 import static info.globalcode.sql.dk.jmx.ConnectionManagement.incrementCounter;
21 import static info.globalcode.sql.dk.jmx.ConnectionManagement.resetCounter;
22 import info.globalcode.sql.dk.batch.Batch;
23 import info.globalcode.sql.dk.batch.BatchException;
24 import info.globalcode.sql.dk.configuration.DatabaseDefinition;
25 import info.globalcode.sql.dk.configuration.Loader;
26 import info.globalcode.sql.dk.configuration.Properties;
27 import info.globalcode.sql.dk.formatting.ColumnsHeader;
28 import info.globalcode.sql.dk.formatting.Formatter;
29 import info.globalcode.sql.dk.jmx.ConnectionManagement;
30 import info.globalcode.sql.dk.jmx.ConnectionManagement.COUNTER;
31 import java.sql.Connection;
32 import java.sql.PreparedStatement;
33 import java.sql.ResultSet;
34 import java.sql.SQLException;
35 import java.sql.SQLWarning;
36 import java.util.logging.Level;
37 import java.util.logging.Logger;
40 * Represents connected database. Is derived from {@linkplain DatabaseDefinition}.
41 * Wraps {@linkplain Connection}.
43 * Is responsible for executing {@linkplain SQLCommand} and passing results to the
44 * {@linkplain Formatter}.
46 * @author Ing. František Kučera (frantovo.cz)
48 public class DatabaseConnection implements AutoCloseable {
50 private static final Logger log = Logger.getLogger(DatabaseConnection.class.getName());
51 public static final String JDBC_PROPERTY_USER = "user";
52 public static final String JDBC_PROPERTY_PASSWORD = "password";
53 private final DatabaseDefinition databaseDefinition;
54 private final Connection connection;
55 private final Properties properties;
57 * Could be null = JMX is disabled → must check, see functions in
58 * {@linkplain ConnectionManagement}
60 private final ConnectionManagement connectionMBean;
64 * @param databaseDefinition DB url, name, password etc.
65 * @param properties additional properties from CLI
66 * @param connectionMBean JMX management bean | null = disabled JMX reporting
67 * @throws SQLException
69 public DatabaseConnection(DatabaseDefinition databaseDefinition, Properties properties, ConnectionManagement connectionMBean) throws SQLException {
70 this.databaseDefinition = databaseDefinition;
71 this.properties = properties;
72 this.connectionMBean = connectionMBean;
73 this.connection = Loader.jdbcConnect(databaseDefinition, properties);
76 public void executeQuery(SQLCommand sqlCommand, Formatter formatter) throws SQLException {
77 formatter.writeStartBatch();
78 formatter.writeStartDatabase(databaseDefinition);
79 formatter.writeStartStatement();
80 formatter.writeQuery(sqlCommand.getQuery());
81 formatter.writeParameters(sqlCommand.getParameters());
82 processCommand(sqlCommand, formatter);
83 formatter.writeEndStatement();
84 formatter.writeEndDatabase();
85 formatter.writeEndBatch();
88 public void executeBatch(Batch batch, Formatter formatter) throws SQLException, BatchException {
89 formatter.writeStartBatch();
90 formatter.writeStartDatabase(databaseDefinition);
91 while (batch.hasNext()) {
92 SQLCommand sqlCommand = batch.next();
93 formatter.writeStartStatement();
94 formatter.writeQuery(sqlCommand.getQuery());
95 formatter.writeParameters(sqlCommand.getParameters());
96 processCommand(sqlCommand, formatter);
97 formatter.writeEndStatement();
99 formatter.writeEndDatabase();
100 formatter.writeEndBatch();
103 private void processCommand(SQLCommand sqlCommand, Formatter formatter) throws SQLException {
104 incrementCounter(connectionMBean, COUNTER.COMMAND);
105 resetCounter(connectionMBean, COUNTER.RECORD_CURRENT);
107 try (PreparedStatement ps = sqlCommand.prepareStatement(connection)) {
108 log.log(Level.FINE, "Statement prepared");
109 sqlCommand.parametrize(ps);
111 boolean isRS = ps.execute();
112 log.log(Level.FINE, "Statement executed");
114 try (ResultSet rs = ps.getResultSet()) {
115 processResultSet(rs, formatter);
118 processUpdateResult(ps, formatter);
122 while (ps.getMoreResults() || ps.getUpdateCount() > -1) {
123 ResultSet rs = ps.getResultSet();
125 processUpdateResult(ps, formatter);
127 processResultSet(rs, formatter);
135 private void processUpdateResult(PreparedStatement ps, Formatter formatter) throws SQLException {
136 formatter.writeUpdatesResult(ps.getUpdateCount());
139 private void processResultSet(ResultSet rs, Formatter formatter) throws SQLException {
140 formatter.writeStartResultSet(new ColumnsHeader(rs.getMetaData()));
142 int columnCount = rs.getMetaData().getColumnCount();
145 incrementCounter(connectionMBean, COUNTER.RECORD_CURRENT);
146 incrementCounter(connectionMBean, COUNTER.RECORD_TOTAL);
148 formatter.writeStartRow();
150 for (int i = 1; i <= columnCount; i++) {
151 formatter.writeColumnValue(rs.getObject(i));
154 formatter.writeEndRow();
157 formatter.writeEndResultSet();
160 private void logWarnings(PreparedStatement ps) throws SQLException {
161 SQLWarning w = ps.getWarnings();
163 log.log(Level.WARNING, "SQL: {0}", w.getLocalizedMessage());
164 w = w.getNextWarning();
170 * Tests if this connection is live.
172 * @return true if test was successful
173 * @throws SQLException if test fails
175 public boolean test() throws SQLException {
176 connection.getAutoCommit();
181 public void close() throws SQLException {