author | František Kučera <franta-hg@frantovo.cz> |
Wed, 15 Jan 2014 21:38:02 +0100 | |
branch | v_0 |
changeset 162 | 7863d8a423d4 |
parent 155 | eb3676c6929b |
child 178 | 5a5fc66f11b1 |
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.batch.BatchException; |
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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.configuration.Property; |
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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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* Represents connected database. Is derived from {@linkplain DatabaseDefinition}. |
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* Wraps {@linkplain Connection}. |
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* |
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* Is responsible for executing {@linkplain SQLCommand} and passing results to the |
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* {@linkplain Formatter}. |
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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 static final String JDBC_PROPERTY_USER = "user"; |
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public static final String JDBC_PROPERTY_PASSWORD = "password"; |
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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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if (properties.hasProperty(JDBC_PROPERTY_PASSWORD)) { |
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log.log(Level.WARNING, "Passing DB password as CLI parameter is insecure!"); |
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} |
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Properties credentials = new Properties(); |
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credentials.add(new Property(JDBC_PROPERTY_USER, databaseDefinition.getUserName())); |
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credentials.add(new Property(JDBC_PROPERTY_PASSWORD, databaseDefinition.getPassword())); |
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credentials.setDefaults(databaseDefinition.getProperties()); |
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properties.setDefaults(credentials); |
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java.util.Properties javaProperties = properties.getJavaProperties(); |
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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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formatter.writeStartStatement(); |
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formatter.writeQuery(sqlCommand.getQuery()); |
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formatter.writeParameters(sqlCommand.getParameters()); |
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processCommand(sqlCommand, formatter); |
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formatter.writeEndStatement(); |
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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, BatchException { |
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formatter.writeStartBatch(); |
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formatter.writeStartDatabase(databaseDefinition); |
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while (batch.hasNext()) { |
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SQLCommand sqlCommand = batch.next(); |
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formatter.writeStartStatement(); |
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formatter.writeQuery(sqlCommand.getQuery()); |
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formatter.writeParameters(sqlCommand.getParameters()); |
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processCommand(sqlCommand, formatter); |
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formatter.writeEndStatement(); |
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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(rs, formatter); |
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} |
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} else { |
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processUpdateResult(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(ps, formatter); |
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} else { |
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processResultSet(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(PreparedStatement ps, Formatter formatter) throws SQLException { |
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formatter.writeUpdatesResult(ps.getUpdateCount()); |
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} |
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support SQL commands returning more ResultSets + remove COMMAND_TYPE (type is now derived from result returned from SQL – it is not needed to specify the type on CLI)
František Kučera <franta-hg@frantovo.cz>
parents:
35
diff
changeset
|
131 |
|
142
da1e38386d84
Formatters: structural change – new level „statement“ → query and parameters are no more duplicated into each result set or updates result
František Kučera <franta-hg@frantovo.cz>
parents:
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diff
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|
132 |
private void processResultSet(ResultSet rs, Formatter formatter) throws SQLException { |
da1e38386d84
Formatters: structural change – new level „statement“ → query and parameters are no more duplicated into each result set or updates result
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parents:
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diff
changeset
|
133 |
formatter.writeStartResultSet(new ColumnsHeader(rs.getMetaData())); |
37
9e6f8e5d5f98
support SQL commands returning more ResultSets + remove COMMAND_TYPE (type is now derived from result returned from SQL – it is not needed to specify the type on CLI)
František Kučera <franta-hg@frantovo.cz>
parents:
35
diff
changeset
|
134 |
|
34
9335cf31c0f2
first working version
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parents:
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diff
changeset
|
135 |
int columnCount = rs.getMetaData().getColumnCount(); |
9335cf31c0f2
first working version
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parents:
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diff
changeset
|
136 |
|
29
d66858b4b563
more configuration, more JAXB, more formatters
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parents:
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|
137 |
while (rs.next()) { |
d66858b4b563
more configuration, more JAXB, more formatters
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parents:
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diff
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|
138 |
formatter.writeStartRow(); |
d66858b4b563
more configuration, more JAXB, more formatters
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parents:
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diff
changeset
|
139 |
|
34
9335cf31c0f2
first working version
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parents:
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diff
changeset
|
140 |
for (int i = 1; i <= columnCount; i++) { |
9335cf31c0f2
first working version
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parents:
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|
141 |
formatter.writeColumnValue(rs.getObject(i)); |
9335cf31c0f2
first working version
František Kučera <franta-hg@frantovo.cz>
parents:
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diff
changeset
|
142 |
} |
9335cf31c0f2
first working version
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parents:
29
diff
changeset
|
143 |
|
29
d66858b4b563
more configuration, more JAXB, more formatters
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parents:
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changeset
|
144 |
formatter.writeEndRow(); |
d66858b4b563
more configuration, more JAXB, more formatters
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parents:
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changeset
|
145 |
} |
34
9335cf31c0f2
first working version
František Kučera <franta-hg@frantovo.cz>
parents:
29
diff
changeset
|
146 |
|
142
da1e38386d84
Formatters: structural change – new level „statement“ → query and parameters are no more duplicated into each result set or updates result
František Kučera <franta-hg@frantovo.cz>
parents:
108
diff
changeset
|
147 |
formatter.writeEndResultSet(); |
29
d66858b4b563
more configuration, more JAXB, more formatters
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parents:
28
diff
changeset
|
148 |
} |
42
6fdaa4db3943
DatabaseConnection implements AutoCloseable
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parents:
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diff
changeset
|
149 |
|
86 | 150 |
private void logWarnings(PreparedStatement ps) throws SQLException { |
151 |
SQLWarning w = ps.getWarnings(); |
|
152 |
while (w != null) { |
|
153 |
log.log(Level.WARNING, "SQL: {0}", w.getLocalizedMessage()); |
|
154 |
w = w.getNextWarning(); |
|
155 |
} |
|
156 |
ps.clearWarnings(); |
|
157 |
} |
|
158 |
||
65
f05be87239ad
option --test-connection – tests connection to given database
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parents:
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|
159 |
/** |
f05be87239ad
option --test-connection – tests connection to given database
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parents:
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diff
changeset
|
160 |
* Tests if this connection is live. |
f05be87239ad
option --test-connection – tests connection to given database
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parents:
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diff
changeset
|
161 |
* |
f05be87239ad
option --test-connection – tests connection to given database
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parents:
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diff
changeset
|
162 |
* @return true if test was successful |
f05be87239ad
option --test-connection – tests connection to given database
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parents:
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diff
changeset
|
163 |
* @throws SQLException if test fails |
f05be87239ad
option --test-connection – tests connection to given database
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parents:
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changeset
|
164 |
*/ |
f05be87239ad
option --test-connection – tests connection to given database
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parents:
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|
165 |
public boolean test() throws SQLException { |
f05be87239ad
option --test-connection – tests connection to given database
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parents:
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|
166 |
connection.getAutoCommit(); |
f05be87239ad
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parents:
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|
167 |
return true; |
f05be87239ad
option --test-connection – tests connection to given database
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parents:
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changeset
|
168 |
} |
f05be87239ad
option --test-connection – tests connection to given database
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parents:
55
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changeset
|
169 |
|
42
6fdaa4db3943
DatabaseConnection implements AutoCloseable
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parents:
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diff
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|
170 |
@Override |
6fdaa4db3943
DatabaseConnection implements AutoCloseable
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changeset
|
171 |
public void close() throws SQLException { |
6fdaa4db3943
DatabaseConnection implements AutoCloseable
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parents:
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diff
changeset
|
172 |
connection.close(); |
6fdaa4db3943
DatabaseConnection implements AutoCloseable
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parents:
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diff
changeset
|
173 |
} |
26 | 174 |
} |