author | František Kučera <franta-hg@frantovo.cz> |
Wed, 01 Jan 2014 01:06:38 +0100 | |
branch | v_0 |
changeset 106 | e9c3583580c8 |
parent 91 | 43e8d52091d5 |
child 107 | 8189a4a28cd8 |
permissions | -rw-r--r-- |
26 | 1 |
/** |
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* SQL-DK |
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* Copyright © 2013 František Kučera (frantovo.cz) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package info.globalcode.sql.dk; |
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import info.globalcode.sql.dk.batch.Batch; |
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import info.globalcode.sql.dk.configuration.DatabaseDefinition; |
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import info.globalcode.sql.dk.configuration.Properties; |
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import info.globalcode.sql.dk.formatting.ColumnsHeader; |
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import info.globalcode.sql.dk.formatting.Formatter; |
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import java.sql.Connection; |
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import java.sql.DriverManager; |
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import java.sql.PreparedStatement; |
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import java.sql.ResultSet; |
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import java.sql.SQLException; |
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import java.sql.SQLWarning; |
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import java.util.logging.Level; |
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import java.util.logging.Logger; |
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/** |
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* |
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* @author Ing. František Kučera (frantovo.cz) |
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*/ |
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DatabaseConnection implements AutoCloseable
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public class DatabaseConnection implements AutoCloseable { |
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private static final Logger log = Logger.getLogger(DatabaseConnection.class.getName()); |
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private DatabaseDefinition databaseDefinition; |
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private Connection connection; |
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private Properties properties; |
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public DatabaseConnection(DatabaseDefinition databaseDefinition, Properties properties) throws SQLException { |
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this.databaseDefinition = databaseDefinition; |
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this.properties = properties; |
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properties.setDefaults(databaseDefinition.getProperties()); |
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java.util.Properties javaProperties = properties.getJavaProperties(); |
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javaProperties.setProperty("user", databaseDefinition.getUserName()); |
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javaProperties.setProperty("password", databaseDefinition.getPassword()); |
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connection = DriverManager.getConnection(databaseDefinition.getUrl(), javaProperties); |
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} |
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public void executeQuery(SQLCommand sqlCommand, Formatter formatter) throws SQLException { |
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formatter.writeStartBatch(); |
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formatter.writeStartDatabase(databaseDefinition); |
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processCommand(sqlCommand, formatter); |
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formatter.writeEndDatabase(); |
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formatter.writeEndBatch(); |
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} |
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public void executeBatch(Batch batch, Formatter formatter) throws SQLException { |
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formatter.writeStartBatch(); |
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formatter.writeStartDatabase(databaseDefinition); |
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while (batch.hasNext()) { |
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processCommand(batch.next(), formatter); |
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} |
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formatter.writeEndDatabase(); |
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formatter.writeEndBatch(); |
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} |
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private void processCommand(SQLCommand sqlCommand, Formatter formatter) throws SQLException { |
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try (PreparedStatement ps = sqlCommand.prepareStatement(connection)) { |
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log.log(Level.FINE, "Statement prepared"); |
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sqlCommand.parametrize(ps); |
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boolean isRS = ps.execute(); |
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log.log(Level.FINE, "Statement executed"); |
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if (isRS) { |
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try (ResultSet rs = ps.getResultSet()) { |
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processResultSet(sqlCommand, rs, formatter); |
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} |
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} else { |
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processUpdateResult(sqlCommand, ps, formatter); |
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} |
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logWarnings(ps); |
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while (ps.getMoreResults() || ps.getUpdateCount() > -1) { |
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ResultSet rs = ps.getResultSet(); |
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if (rs == null) { |
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processUpdateResult(sqlCommand, ps, formatter); |
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} else { |
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processResultSet(sqlCommand, rs, formatter); |
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rs.close(); |
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} |
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logWarnings(ps); |
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} |
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} |
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} |
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private void processUpdateResult(SQLCommand sqlCommand, PreparedStatement ps, Formatter formatter) throws SQLException { |
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formatter.writeStartUpdatesResult(); |
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formatter.writeQuery(sqlCommand.getQuery()); |
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formatter.writeParameters(sqlCommand.getParameters()); |
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formatter.writeUpdatedRowsCount(ps.getUpdateCount()); |
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formatter.writeEndUpdatesResult(); |
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} |
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private void processResultSet(SQLCommand sqlCommand, ResultSet rs, Formatter formatter) throws SQLException { |
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formatter.writeStartResultSet(); |
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formatter.writeQuery(sqlCommand.getQuery()); |
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formatter.writeParameters(sqlCommand.getParameters()); |
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processResultSetRows(rs, formatter); |
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formatter.writeEndResultSet(); |
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} |
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private void processResultSetRows(ResultSet rs, Formatter formatter) throws SQLException { |
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formatter.writeColumnsHeader(new ColumnsHeader(rs.getMetaData())); |
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124 |
int columnCount = rs.getMetaData().getColumnCount(); |
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|
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while (rs.next()) { |
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formatter.writeStartRow(); |
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128 |
|
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129 |
for (int i = 1; i <= columnCount; i++) { |
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formatter.writeColumnValue(rs.getObject(i)); |
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131 |
} |
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132 |
|
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formatter.writeEndRow(); |
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134 |
} |
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135 |
|
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136 |
} |
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137 |
|
86 | 138 |
private void logWarnings(PreparedStatement ps) throws SQLException { |
139 |
SQLWarning w = ps.getWarnings(); |
|
140 |
while (w != null) { |
|
141 |
log.log(Level.WARNING, "SQL: {0}", w.getLocalizedMessage()); |
|
142 |
w = w.getNextWarning(); |
|
143 |
} |
|
144 |
ps.clearWarnings(); |
|
145 |
} |
|
146 |
||
65
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/** |
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* Tests if this connection is live. |
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149 |
* |
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* @return true if test was successful |
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* @throws SQLException if test fails |
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152 |
*/ |
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public boolean test() throws SQLException { |
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connection.getAutoCommit(); |
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return true; |
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156 |
} |
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157 |
|
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@Override |
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159 |
public void close() throws SQLException { |
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connection.close(); |
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161 |
} |
26 | 162 |
} |