org.fabric3.security.spring.factory.DataSourceWrapper Maven / Gradle / Ivy

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/*
 * Fabric3
 * Copyright (c) 2009-2015 Metaform Systems
 *
 * 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.fabric3.security.spring.factory;

import javax.sql.DataSource;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.util.logging.Logger;

import org.fabric3.datasource.spi.DataSourceRegistry;

/**
 * Wraps a DataSource to retrieve it lazily from the {@link DataSourceRegistry}. Wrapping is necessary as a DataSource may not be registered until
 * after the Spring Security configuration has been instantiated.
 */
public class DataSourceWrapper implements DataSource {
    private String name;
    private DataSourceRegistry registry;
    private DataSource delegate;

    public DataSourceWrapper(String name, DataSourceRegistry registry) {
        this.name = name;
        this.registry = registry;
    }

    public Connection getConnection() throws SQLException {
        return getDataSource().getConnection();
    }

    public Connection getConnection(String username, String password) throws SQLException {
        return getDataSource().getConnection(username, password);
    }

    public  T unwrap(Class iface) throws SQLException {
        return getDataSource().unwrap(iface);
    }

    public boolean isWrapperFor(Class iface) throws SQLException {
        return getDataSource().isWrapperFor(iface);
    }

    public PrintWriter getLogWriter() throws SQLException {
        return getDataSource().getLogWriter();
    }

    public void setLogWriter(PrintWriter out) throws SQLException {
        getDataSource().setLogWriter(out);
    }

    public void setLoginTimeout(int seconds) throws SQLException {
        getDataSource().setLoginTimeout(seconds);
    }

    public int getLoginTimeout() throws SQLException {
        return getDataSource().getLoginTimeout();
    }

    public Logger getParentLogger() throws SQLFeatureNotSupportedException {
        throw new SQLFeatureNotSupportedException();
    }

    private DataSource getDataSource() throws SQLException {
        if (delegate == null) {
            delegate = registry.getDataSource(name);
            if (delegate == null) {
                throw new SQLException("DataSource not registered: " + name);
            }
        }
        return delegate;
    }
}