org.springframework.jdbc.datasource.AbstractDataSource Maven / Gradle / Ivy
/*
* Copyright 2002-2023 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
*
* https://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.datasource;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.logging.Logger;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Abstract base class for Spring's {@link javax.sql.DataSource}
* implementations, taking care of the padding.
*
* 'Padding' in the context of this class means default implementations
* for certain methods from the {@code DataSource} interface, such as
* {@link #getLoginTimeout()}, {@link #setLoginTimeout(int)}, and so forth.
*
* @author Juergen Hoeller
* @since 07.05.2003
* @see DriverManagerDataSource
*/
public abstract class AbstractDataSource implements DataSource {
/** Logger available to subclasses. */
protected final Log logger = LogFactory.getLog(getClass());
/**
* Returns 0, indicating the default system timeout is to be used.
*/
@Override
public int getLoginTimeout() throws SQLException {
return 0;
}
/**
* Setting a login timeout is not supported.
*/
@Override
public void setLoginTimeout(int timeout) throws SQLException {
throw new UnsupportedOperationException("setLoginTimeout");
}
/**
* LogWriter methods are not supported.
*/
@Override
public PrintWriter getLogWriter() {
throw new UnsupportedOperationException("getLogWriter");
}
/**
* LogWriter methods are not supported.
*/
@Override
public void setLogWriter(PrintWriter pw) throws SQLException {
throw new UnsupportedOperationException("setLogWriter");
}
@Override
public Logger getParentLogger() {
return Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
}
@Override
@SuppressWarnings("unchecked")
public T unwrap(Class iface) throws SQLException {
if (iface.isInstance(this)) {
return (T) this;
}
throw new SQLException("DataSource of type [" + getClass().getName() +
"] cannot be unwrapped as [" + iface.getName() + "]");
}
@Override
public boolean isWrapperFor(Class iface) throws SQLException {
return iface.isInstance(this);
}
}