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added override for supportsGetGeneratedKeys for Derby; driver reports this is unsupported, but it seems to work OK

This commit is contained in:
Thomas Risberg 2009-05-29 14:06:01 +00:00
parent 60af7aba16
commit f3e6242568
3 changed files with 61 additions and 2 deletions
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56
org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/metadata/DerbyTableMetaDataProvider.java Normal file
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@ -0,0 +1,56 @@
/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.jdbc.core.metadata;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;
/**
* The Derby specific implementation of the {@link org.springframework.jdbc.core.metadata.TableMetaDataProvider}.
* Overrides the Derby metadata info regarding retreiving generated keys. It seems to work OK so not sure why they
* claim it's not supported.
*
* @author Thomas Risberg
* @since 3.0
*/
public class DerbyTableMetaDataProvider extends GenericTableMetaDataProvider {
private boolean supportsGeneratedKeysOverride = false;
public DerbyTableMetaDataProvider(DatabaseMetaData databaseMetaData) throws SQLException {
super(databaseMetaData);
}
@Override
public void initializeWithMetaData(DatabaseMetaData databaseMetaData) throws SQLException {
super.initializeWithMetaData(databaseMetaData);
if (!databaseMetaData.supportsGetGeneratedKeys()) {
logger.warn("Overriding supportsGetGeneratedKeys from DatabaseMetaData to 'true'; it was reported as " +
"'false' by " + databaseMetaData.getDriverName() + " " + databaseMetaData.getDriverVersion());
supportsGeneratedKeysOverride = true;
}
}
@Override
public boolean isGetGeneratedKeysSupported() {
boolean derbysAnswer = super.isGetGeneratedKeysSupported();
if (!derbysAnswer) {
return supportsGeneratedKeysOverride;
}
return derbysAnswer;
}
}

4
org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/metadata/PostgresTableMetaDataProvider.java
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@ -4,8 +4,8 @@ import java.sql.DatabaseMetaData;
import java.sql.SQLException;
/**
* The HSQL specific implementation of the {@link org.springframework.jdbc.core.metadata.TableMetaDataProvider}. Suports a feature for
* retreiving generated keys without the JDBC 3.0 getGeneratedKeys support.
* The PostgreSQL specific implementation of the {@link org.springframework.jdbc.core.metadata.TableMetaDataProvider}.
* Suports a feature for retreiving generated keys without the JDBC 3.0 getGeneratedKeys support.
*
* @author Thomas Risberg
* @since 2.5

3
org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/metadata/TableMetaDataProviderFactory.java
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@ -63,6 +63,9 @@ public class TableMetaDataProviderFactory {
else if ("PostgreSQL".equals(databaseProductName)) {
provider = new PostgresTableMetaDataProvider(databaseMetaData);
}
else if ("Apache Derby".equals(databaseProductName)) {
provider = new DerbyTableMetaDataProvider(databaseMetaData);
}
else {
provider = new GenericTableMetaDataProvider(databaseMetaData);
}