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From Peter Ondruška <peter.ondru...@kaibo.eu>
Subject Re: XQuery or XSLT support in Derby
Date Thu, 29 Oct 2015 12:51:59 GMT
Dear Greg,

unless anything changed with last Derby release XML support in Derby is
limited to storing XML--the last time I checked basically there is only an
XML data type, no query, no indexes.

On 29 October 2015 at 09:11, Grzegorz Zuber <zubergrzesiek@gmail.com> wrote:

> Hi,
>
> I was doing wide research how can I do XQuery or XSLT query using Derby.
>
> I'm doing query like this:
>
>
>
> SELECT
>     XMLSERIALIZE(
>         XMLQUERY('<?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet version="1.0"
>     xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="
> http://www.w3.org/1999/XSL/Format">
>
>     <xsl:template match="catalog">
>         <html lang="en">
>             <head>
>             <body>
>
>                 <table>
>                     <thead>
>                         <tr>
>                             <th>Title</th>
>                         </tr>
>                     </thead>
>                     <tbody>
>                         <xsl:for-each select="book">
>                             <tr>
>                                 <td>
>                                     <xsl:value-of select="title" />
>                                 </td>
>                             </tr>
>                         </xsl:for-each>
>                     </tbody>
>                 </table>
>             </body>
>         </html>
>     </xsl:template>
> </xsl:stylesheet>' PASSING BY REF xml_col EMPTY ON
>         EMPTY) AS VARCHAR(10)
>     )AS ProductId
> FROM xml_orders
>
>
>
>
> But I'm getting an exception:
>
> java.sql.SQLException: Encountered error while evaluating XML query
> expression for xmlquery operator:
> com.sun.org.apache.xpath.internal.domapi.XPathStylesheetDOM3Exception:
> Prefix must resolve to a namespace: xsl
> at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown
> Source)
> at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown
> Source)
> at org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
> at
> org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown
> Source)
> at
> org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown
> Source)
> at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown
> Source)
> at org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown
> Source)
> at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedStatement.executeQuery(Unknown Source)
> at com.sqlxd.derby.DBQuery.executeDerbyQuery(DBQuery.java:295)
> at com.SQLxDClient.QueryExecutor.executeQuery(QueryExecutor.java:47)
> at com.SQLxDClient.Window$3.serveExecuteToGrid(Window.java:204)
> at com.SQLxDClient.Window$3.mouseClicked(Window.java:192)
> at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:270)
> at java.awt.Component.processMouseEvent(Component.java:6519)
> at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
> at java.awt.Component.processEvent(Component.java:6281)
> at java.awt.Container.processEvent(Container.java:2229)
> at java.awt.Component.dispatchEventImpl(Component.java:4872)
> at java.awt.Container.dispatchEventImpl(Container.java:2287)
> at java.awt.Component.dispatchEvent(Component.java:4698)
> at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
> at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4501)
> at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
> at java.awt.Container.dispatchEventImpl(Container.java:2273)
> at java.awt.Window.dispatchEventImpl(Window.java:2719)
> at java.awt.Component.dispatchEvent(Component.java:4698)
> at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:747)
> at java.awt.EventQueue.access$300(EventQueue.java:103)
> at java.awt.EventQueue$3.run(EventQueue.java:706)
> at java.awt.EventQueue$3.run(EventQueue.java:704)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
> at
> java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
> at java.awt.EventQueue$4.run(EventQueue.java:720)
> at java.awt.EventQueue$4.run(EventQueue.java:718)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
> at java.awt.EventQueue.dispatchEvent(EventQueue.java:717)
> at
> java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
> at
> java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
> at
> java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
> at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
> at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
> at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
> Caused by: ERROR 10000: Encountered error while evaluating XML query
> expression for xmlquery operator:
> com.sun.org.apache.xpath.internal.domapi.XPathStylesheetDOM3Exception:
> Prefix must resolve to a namespace: xsl
> at org.apache.derby.iapi.error.StandardException.newException(Unknown
> Source)
> at
> org.apache.derby.impl.jdbc.SQLExceptionFactory.wrapArgsForTransportAcrossDRDA(Unknown
> Source)
> ... 45 more
> Caused by: javax.xml.xpath.XPathExpressionException:
> com.sun.org.apache.xpath.internal.domapi.XPathStylesheetDOM3Exception:
> Prefix must resolve to a namespace: xsl
> at
> com.sun.org.apache.xpath.internal.jaxp.XPathImpl.compile(XPathImpl.java:400)
> at org.apache.derby.iapi.types.SqlXmlUtil.compileXQExpr(Unknown Source)
> at
> org.apache.derby.exe.ac185e801cx0150xb293xf5c3x000006bfe7b80.postConstructor(Unknown
> Source)
> at
> org.apache.derby.impl.services.reflect.LoadedGeneratedClass.newInstance(Unknown
> Source)
> at org.apache.derby.impl.sql.GenericActivationHolder.<init>(Unknown Source)
> at
> org.apache.derby.impl.sql.GenericPreparedStatement.getActivation(Unknown
> Source)
> ... 38 more
> Caused by:
> com.sun.org.apache.xpath.internal.domapi.XPathStylesheetDOM3Exception:
> Prefix must resolve to a namespace: xsl
> at
> com.sun.org.apache.xpath.internal.compiler.XPathParser.errorForDOM3(XPathParser.java:657)
> at
> com.sun.org.apache.xpath.internal.compiler.Lexer.mapNSTokens(Lexer.java:642)
> at
> com.sun.org.apache.xpath.internal.compiler.Lexer.tokenize(Lexer.java:219)
> at
> com.sun.org.apache.xpath.internal.compiler.Lexer.tokenize(Lexer.java:100)
> at
> com.sun.org.apache.xpath.internal.compiler.XPathParser.initXPath(XPathParser.java:114)
> at com.sun.org.apache.xpath.internal.XPath.<init>(XPath.java:180)
> at com.sun.org.apache.xpath.internal.XPath.<init>(XPath.java:268)
> at
> com.sun.org.apache.xpath.internal.jaxp.XPathImpl.compile(XPathImpl.java:392)
> ... 43 more
>
>
> How can I avoid that?
>
>
>
> Thank you,
> Greg
>



-- 
Peter Ondruška

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