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[#2446] Add JDBCUtils.dialect(Connection) to "guess" the jOOQ SQLDialect

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from a JDBC Connection
This commit is contained in:
Lukas Eder 2013-05-09 12:34:07 +02:00
parent ce52beb115
commit a1f558a69b
3 changed files with 208 additions and 0 deletions
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95
jOOQ-test/src/org/jooq/test/_/testcases/JDBCTests.java Normal file
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@ -0,0 +1,95 @@
/**
* Copyright (c) 2009-2013, Lukas Eder, lukas.eder@gmail.com
* All rights reserved.
*
* This software is licensed to you under the Apache License, Version 2.0
* (the "License"); You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* . Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* . Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* . Neither the name "jOOQ" nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package org.jooq.test._.testcases;
import static org.junit.Assert.assertEquals;
import java.sql.Connection;
import java.sql.Date;
import org.jooq.ConnectionProvider;
import org.jooq.Record1;
import org.jooq.Record2;
import org.jooq.Record3;
import org.jooq.Record6;
import org.jooq.TableRecord;
import org.jooq.UpdatableRecord;
import org.jooq.test.BaseTest;
import org.jooq.test.jOOQAbstractTest;
import org.jooq.tools.jdbc.JDBCUtils;
import org.junit.Test;
public class JDBCTests<
A extends UpdatableRecord<A> & Record6<Integer, String, String, Date, Integer, ?>,
AP,
B extends UpdatableRecord<B>,
S extends UpdatableRecord<S> & Record1<String>,
B2S extends UpdatableRecord<B2S> & Record3<String, Integer, Integer>,
BS extends UpdatableRecord<BS>,
L extends TableRecord<L> & Record2<String, String>,
X extends TableRecord<X>,
DATE extends UpdatableRecord<DATE>,
BOOL extends UpdatableRecord<BOOL>,
D extends UpdatableRecord<D>,
T extends UpdatableRecord<T>,
U extends TableRecord<U>,
UU extends UpdatableRecord<UU>,
I extends TableRecord<I>,
IPK extends UpdatableRecord<IPK>,
T725 extends UpdatableRecord<T725>,
T639 extends UpdatableRecord<T639>,
T785 extends TableRecord<T785>>
extends BaseTest<A, AP, B, S, B2S, BS, L, X, DATE, BOOL, D, T, U, UU, I, IPK, T725, T639, T785> {
public JDBCTests(jOOQAbstractTest<A, AP, B, S, B2S, BS, L, X, DATE, BOOL, D, T, U, UU, I, IPK, T725, T639, T785> delegate) {
super(delegate);
}
@Test
public void testDialectGuessing() throws Exception {
ConnectionProvider cp = create().configuration().connectionProvider();
Connection c = cp.acquire();
try {
assertEquals(create().configuration().dialect(), JDBCUtils.dialect(getConnection()));
assertEquals(create().configuration().dialect(), JDBCUtils.dialect(c));
}
finally {
cp.release(c);
}
}
}

6
jOOQ-test/src/org/jooq/test/jOOQAbstractTest.java
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@ -119,6 +119,7 @@ import org.jooq.test._.testcases.FunctionTests;
import org.jooq.test._.testcases.GeneralTests;
import org.jooq.test._.testcases.GroupByTests;
import org.jooq.test._.testcases.InsertUpdateTests;
import org.jooq.test._.testcases.JDBCTests;
import org.jooq.test._.testcases.JoinTests;
import org.jooq.test._.testcases.LoaderTests;
import org.jooq.test._.testcases.MetaDataTests;
@ -2208,4 +2209,9 @@ public abstract class jOOQAbstractTest<
public void testCancelStatement() throws Exception {
new StatementTests(this).testCancelStatement();
}
@Test
public void testDialectGuessing() throws Exception {
new JDBCTests(this).testDialectGuessing();
}
}

107
jOOQ/src/main/java/org/jooq/tools/jdbc/JDBCUtils.java
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@ -35,15 +35,34 @@
*/
package org.jooq.tools.jdbc;
import static org.jooq.SQLDialect.ASE;
import static org.jooq.SQLDialect.CUBRID;
import static org.jooq.SQLDialect.DB2;
import static org.jooq.SQLDialect.DERBY;
import static org.jooq.SQLDialect.FIREBIRD;
import static org.jooq.SQLDialect.H2;
import static org.jooq.SQLDialect.HSQLDB;
import static org.jooq.SQLDialect.INGRES;
import static org.jooq.SQLDialect.MYSQL;
import static org.jooq.SQLDialect.ORACLE;
import static org.jooq.SQLDialect.POSTGRES;
import static org.jooq.SQLDialect.SQLITE;
import static org.jooq.SQLDialect.SQLSERVER;
import static org.jooq.SQLDialect.SYBASE;
import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.SQLInput;
import java.sql.Statement;
import org.jooq.SQLDialect;
/**
* JDBC-related utility methods
*
@ -51,6 +70,94 @@ import java.sql.Statement;
*/
public class JDBCUtils {
/**
* "Guess" the {@link SQLDialect} from a {@link Connection} instance.
* <p>
* This method tries to guess the <code>SQLDialect</code> of a connection
* from the its connection URL as obtained by
* {@link DatabaseMetaData#getURL()}. If the dialect cannot be guessed from
* the URL (e.g. when using an JDBC-ODBC bridge), further actions may be
* implemented in the future.
*
* @see #dialect(String)
*/
@SuppressWarnings("deprecation")
public static final SQLDialect dialect(Connection connection) {
SQLDialect result = SQLDialect.SQL99;
try {
String url = connection.getMetaData().getURL();
result = dialect(url);
}
catch (SQLException ignore) {}
if (result == SQLDialect.SQL99) {
// If the dialect cannot be guessed from the URL, take some other
// measures, e.g. by querying DatabaseMetaData.getDatabaseProductName()
}
return result;
}
/**
* "Guess" the {@link SQLDialect} from a connection URL.
*/
@SuppressWarnings("deprecation")
public static final SQLDialect dialect(String url) {
// The below list might not be accurate or complete. Feel free to
// contribute fixes related to new / different JDBC driver configuraitons
if (url.startsWith("jdbc:jtds:sybase:")) {
return ASE;
}
else if (url.startsWith("jdbc:cubrid:")) {
return CUBRID;
}
else if (url.startsWith("jdbc:db2:")) {
return DB2;
}
else if (url.startsWith("jdbc:derby:")) {
return DERBY;
}
else if (url.startsWith("jdbc:firebirdsql:")) {
return FIREBIRD;
}
else if (url.startsWith("jdbc:h2:")) {
return H2;
}
else if (url.startsWith("jdbc:hsqldb:")) {
return HSQLDB;
}
else if (url.startsWith("jdbc:ingres:")) {
return INGRES;
}
else if (url.startsWith("jdbc:mysql:")
|| url.startsWith("jdbc:google:")) {
return MYSQL;
}
else if (url.startsWith("jdbc:oracle:")
|| url.startsWith("jdbc:oracle:oci")) {
return ORACLE;
}
else if (url.startsWith("jdbc:postgresql:")) {
return POSTGRES;
}
else if (url.startsWith("jdbc:sqlite:")) {
return SQLITE;
}
else if (url.startsWith("jdbc:sqlserver:")
|| url.startsWith("jdbc:jtds:sqlserver:")
|| url.startsWith("jdbc:microsoft:sqlserver:")
|| url.contains(":mssql")) {
return SQLSERVER;
}
else if (url.startsWith("jdbc:sybase:")) {
return SYBASE;
}
return SQLDialect.SQL99;
}
/**
* Safely close a statement
* <p>