author | František Kučera <franta-hg@frantovo.cz> |
Tue, 24 Dec 2013 00:15:35 +0100 | |
branch | v_0 |
changeset 47 | 92b83789330a |
parent 42 | 6fdaa4db3943 |
child 55 | f5ed7c4efacc |
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.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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/** |
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* |
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* @author Ing. František Kučera (frantovo.cz) |
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*/ |
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public class DatabaseConnection implements AutoCloseable { |
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private DatabaseDefinition databaseDefinition; |
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private Connection connection; |
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public DatabaseConnection(DatabaseDefinition databaseDefinition) throws SQLException { |
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this.databaseDefinition = databaseDefinition; |
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connection = DriverManager.getConnection(databaseDefinition.getUrl(), databaseDefinition.getUserName(), databaseDefinition.getPassword()); |
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} |
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public void executeQuery(SQLCommand sqlCommand, Formatter formatter) throws SQLException { |
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formatter.writeStartDatabase(databaseDefinition); |
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processCommand(sqlCommand, formatter); |
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formatter.writeEndDatabase(); |
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} |
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public void executeBatch(Batch batch, Formatter formatter) throws SQLException { |
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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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} |
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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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sqlCommand.parametrize(ps); |
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boolean isRS = ps.execute(); |
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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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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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} |
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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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103 |
formatter.writeColumnsHeader(new ColumnsHeader(rs.getMetaData())); |
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104 |
int columnCount = rs.getMetaData().getColumnCount(); |
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105 |
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while (rs.next()) { |
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formatter.writeStartRow(); |
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for (int i = 1; i <= columnCount; i++) { |
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formatter.writeColumnValue(rs.getObject(i)); |
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} |
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formatter.writeEndRow(); |
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} |
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} |
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117 |
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118 |
@Override |
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119 |
public void close() throws SQLException { |
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120 |
connection.close(); |
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parents:
41
diff
changeset
|
121 |
} |
26 | 122 |
} |