Problems using XML URL data service on Jdev

Question

Not sure if this is the right forum for this but couldn't find specific forum on XML.
I"m using Jdev Studio Edition Version 11.1.1.4.0 (Win 2008 Server). I'm followng the tutorial (http://www.oracle.com/technetwork/developer-tools/jdev/ccset10-all-091120.html) which treaches how to create a URL service to read RSS feeds.
My real question is about any guidance in creating proper XML schemas. I've read the documentation from wr.org but I"m still not sure about any key rules to follow for creating XML schemas and if XML schemas are a muust for using XML DB to read content from the internet.
Following the instructions I created the following XML schema:
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns="http://www.example.org"
targetNamespace="http://www.example.org"
elementFormDefault="qualified">
<xsd:element name="rss">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="channel" type="channel"></xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:complexType name="channel">
<xsd:sequence>
<xsd:element name="lastBuildDate" type="xsd:string"></xsd:element>
<xsd:element name="title" type="xsd:string"></xsd:element>
<xsd:element name="link" type="xsd:string"></xsd:element>
<xsd:element name="description" type="xsd:string"></xsd:element>
<xsd:element name="managingEditor" type="xsd:string"></xsd:element>
<xsd:element name="language" type="xsd:string"></xsd:element>
<xsd:element name="item" type="item" minOccurs="0" maxOccurs="100"></xsd:element>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="item">
<xsd:sequence>
<xsd:element name="title" type="xsd:string"></xsd:element>
<xsd:element name="link" type="xsd:string"></xsd:element>
<xsd:element name="description" type="xsd:string"></xsd:element>
<xsd:element name="pubDate" type="xsd:string"></xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
When trying to run the page I get the following trace:
Target URL -- http://127.0.0.1:7101/Application1-Project1-context-root/faces/newsPage.jspx
Tag: Definition
<XMLHandler> <parseDataStream> Failed to create the DOM tree for the source. Resaon: Expected '>'.
<XMLHandler> <parseDataStream> Failed to create the DOM tree for the source. Resaon: Expected '>'.
<XMLHandler> <parseDataStream> Failed to create the DOM tree for the source. Resaon: Expected '>'.
<XMLHandler> <parseDataStream> Failed to create the DOM tree for the source. Resaon: Expected '>'.
<XMLHandler> <parseDataStream> Failed to create the DOM tree for the source. Resaon: Expected '>'.
<XMLHandler> <parseDataStream> Failed to create the DOM tree for the source. Resaon: Expected '>'.
<XMLHandler> <parseDataStream> Failed to create the DOM tree for the source. Resaon: Expected '>'.
<XMLHandler> <parseDataStream> Failed to create the DOM tree for the source. Resaon: Expected '>'.
Any idea what I am doing wrong? Thanks, J

Answer 1

Hi Jay,
Most of XML parsers mainly support UTF-8 encoding by default. So if the source is Windows 1252 encoded, the parser might fail.
There are two potential solutions (including but not limited to):
1) Use encoding tools/functions to translate the source with UTF-8 encoded.
2) Change ADF configurations to see if ADF can deal with Windows 1252 encoded source. Also people in ADF forum may have suggestions from their point of view.
Best regards,
Rucong Zhao
Oracle Berkeley DB XML