/*
* @(#)SerialDatalink.java 1.6 05/11/17
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.sql.rowset.serial;
import java.sql.*;
import java.io.*;
import java.net.URL;
/**
* A serialized mapping in the Java programming language of an SQL
* <code>DATALINK</code> value. A <code>DATALINK</code> value
* references a file outside of the underlying data source that the
* data source manages.
* <P>
* <code>RowSet</code> implementations can use the method <code>RowSet.getURL</code>
* to retrieve a <code>java.net.URL</code> object, which can be used
* to manipulate the external data.
* <pre>
* java.net.URL url = rowset.getURL(1);
* </pre>
*/
public class SerialDatalink implements Serializable, Cloneable {
/**
* The extracted URL field retrieved from the DATALINK field.
* @serial
*/
private URL url;
/**
* The SQL type of the elements in this <code>SerialDatalink</code>
* object. The type is expressed as one of the contants from the
* class <code>java.sql.Types</code>.
* @serial
*/
private int baseType;
/**
* The type name used by the DBMS for the elements in the SQL
* <code>DATALINK</code> value that this SerialDatalink object
* represents.
* @serial
*/
private String baseTypeName;
/**
* Constructs a new <code>SerialDatalink</code> object from the given
* <code>java.net.URL</code> object.
* <P>
* @throws SerialException if url parameter is a null
*/
public SerialDatalink(URL url) throws SerialException {
if (url == null) {
throw new SerialException("Cannot serialize empty URL instance");
}
this.url = url;
}
/**
* Returns a new URL that is a copy of this <code>SerialDatalink</code>
* object.
*
* @return a copy of this <code>SerialDatalink</code> object as a
* <code>URL</code> object in the Java programming language.
* @throws SerialException if the <code>URL</code> object cannot be de-serialized
*/
public URL getDatalink() throws SerialException {
URL aURL = null;
try {
aURL = new URL((this.url).toString());
} catch (java.net.MalformedURLException e) {
throw new SerialException("MalformedURLException: " + e.getMessage());
}
return aURL;
}
/**
* The identifier that assists in the serialization of this <code>SerialDatalink</code>
* object.
*/
static final long serialVersionUID = 2826907821828733626L;
}