[
http://issues.apache.org/jira/browse/DERBY-2070?page=comments#action_12449195 ]
kishorevodnala commented on DERBY-2070:
---------------------------------------
Hi Anurag,
Many thanks for your quick response.
Please see the following code.here i made Document object as serializable.even
then it is giving the same Exception.
class SerialPDX implements Serializable {
public Document PDXDoc;
public SerialPDX(Document PDXDoc) {
this.PDXDoc = PDXDoc;
}
}
SerialPDX serializedPDXDocument = new SerialPDX(obj);//here converting document
object as a serializable object.
//obj
is a document object.
Also please let me confirm that is there any way to initialise BLOB in derby
like in Oracle.
Thanks with Regards
Kishore Vodnala
> Is there a way to initialise a BLOB in derby, and how to insert a document
> object in Derby
> ------------------------------------------------------------------------------------------
>
> Key: DERBY-2070
> URL: http://issues.apache.org/jira/browse/DERBY-2070
> Project: Derby
> Issue Type: Bug
> Environment: Windows 98,Derby ,JAVA.
> Reporter: kishorevodnala
>
> I have a problem while inserting an XML document object into a BLOB column in
> Derby database.
> Could you please help me out in resolving this problem.
> Note:there is empty_blob function in oracle for initialising a BLOB.Is there
> anything in derby for initialising a BLOB like in oracle.
> Following is the sample code.
> //creating a DOM object for a xml file and storing this object into the BLOB
> column in the database using streams.
> class exdom
> {
> public static void main(String ss[])
> {
> Document pdxDOM =buildDocument();//creating a DOM object for
> xml file
> serializePDXDOMToDB(pdxDOM); //storing this object into the
> BLOB column in the database using streams
> }
> public static Document buildDocument() {
> Document document = null;
> try {
> DocumentBuilderFactory builderFactory =
> DocumentBuilderFactory.newInstance();
> DocumentBuilder documentBuilder =
> builderFactory.newDocumentBuilder();
> document = documentBuilder.parse(new File("d:\\sample.xml"));
> } catch (Exception e) {e.printStackTrace();}
>
> return document;
> }
> public static void serializePDXDOMToDB(Document obj) {
> Connection conn = null;
> PreparedStatement ps = null;
> ResultSet rs = null;
> String query = "insert into ex9(bl) values(?) " ;
>
> try {
> Class.forName("org.apache.derby.jdbc.ClientDriver");
> String
> url="jdbc:derby://s104f50:1527/example;create=true";
> conn=DriverManager.getConnection(url);
>
> ps = conn.prepareStatement(query);
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
> ObjectOutputStream oout = new ObjectOutputStream(baos);
> oout.writeObject(obj);
> oout.close();
>
> ps.setBytes(1, baos.toByteArray());
> ps.execute();
>
>
>
> }catch(Exception e){e.printStackTrace();}
> }
> }
>
> Following is the exception that occured while execution:
> java.io.NotSerializableException: org.apache.crimson.tree.XmlDocument
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1054)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java
> :1330)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:13
> 02)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.jav
> a:1245)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
> at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
> at exdom.serializePDXDOMToDB(exdom.java:42)
> at exdom.main(exdom.java:11)
> //this code is working fine for String and Integer objects but getting an
> Exception while trying to insert an XML Document object.
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