com.eyeq.pivot4j.datasource.WrappingOlapDataSource.java Source code

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Here is the source code for com.eyeq.pivot4j.datasource.WrappingOlapDataSource.java

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/*
 * ====================================================================
 * This software is subject to the terms of the Common Public License
 * Agreement, available at the following URL:
 *   http://www.opensource.org/licenses/cpl.html .
 * You must accept the terms of that agreement to use this software.
 * ====================================================================
 */
package com.eyeq.pivot4j.datasource;

import java.sql.SQLException;

import javax.sql.DataSource;

import org.apache.commons.lang.NullArgumentException;
import org.olap4j.OlapConnection;

/**
 * OlapDataSource implementation which wraps another JDBC data source. It can be
 * useful when wrapping an existing data source configured in an application
 * server.
 */
public class WrappingOlapDataSource extends AbstractOlapDataSource {

    private DataSource dataSource;

    public WrappingOlapDataSource(DataSource dataSource) {
        if (dataSource == null) {
            throw new NullArgumentException("dataSource");
        }

        this.dataSource = dataSource;
    }

    /**
     * @see com.eyeq.pivot4j.datasource.AbstractOlapDataSource#createConnection(java
     *      .lang.String, java.lang.String)
     */
    @Override
    protected OlapConnection createConnection(String userName, String password) throws SQLException {
        return dataSource.getConnection(userName, password).unwrap(OlapConnection.class);
    }

    /**
     * @return the dataSource
     */
    protected DataSource getDataSource() {
        return dataSource;
    }

    /**
     * @see com.eyeq.pivot4j.datasource.AbstractOlapDataSource#unwrap(java.lang.Class)
     */
    @SuppressWarnings("unchecked")
    @Override
    public <T> T unwrap(Class<T> iface) throws SQLException {
        if (iface.equals(dataSource.getClass())) {
            return (T) dataSource;
        }

        return super.unwrap(iface);
    }
}