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Problem in accessing Namespace in Java.

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OMG

Posted: Tue Aug 07, 2012 4:21 am Post subject: Problem in accessing Namespace in Java.

Novice

Joined: 20 Feb 2012
Posts: 18

I have a XML message as below:

Code:

<?xml version="1.0" encoding="UTF-8"?>
<Log xmlns:BMW="BMW-EXTENSIONS" xmlns:ace="Lookup table for taxes" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.nrf-aprts.org/IXRetail/namespace/" xsi:schemaLocation="http://www.nrf-arts.org/IXRetail/namespace/ BMWPOSLog.xsd">
<Transaction Flag="false">
<StoreID>333</StoreID>
<DrawerNo>1</DrawerNo>
<ImmediateTransaction Version="2.1">
<FailureCode/>
<BMW:SignOff xsi:type="BMW:SimpleImmediateTransaction" xsi:schemaLocation="BMW-EXTENSIONS BMWLogImmediateTransaction.xsd">
<BMW:DateTimestamp>2010-12-08 06:45:00</BMW:DateTimestamp>
<BMW:Header>
<BMW:GroceryHeader>
<BMW:GroceryTerminal>0077</BMW:GroceryTerminal>
<BMW:GroceryTransactionNumber>0270</BMW:GroceryTransactionNumber>
<BMW:GroceryDateTime>2010-12-08 06:45:00</BMW:GroceryDateTime>
</BMW:GroceryHeader>
</BMW:Header>
</BMW:SignOff>
<SignOff>
<SessionSettle>
<TenderSummary>
<Loan>
<Amount>0.00</Amount>
<Count>0</Count>
</Loan>
<Pickup>
<Amount>0.00</Amount>
<Count>0</Count>
</Pickup>
</TenderSummary>
</SessionSettle>
</SignOff>
</ImmediateTransaction>
</Transaction>
</Log>

I have to access the elements in first instance of "SignOff" with 'BMW' namespace (like GroceryTerminal,GroceryTransactionNumber etc) . The ESQL code for this is (The value has been accessed in str0hdr variable.):

Code:

DECLARE ns NAMESPACE 'http://www.nrf-aprts.org/IXRetail/namespace/' (http://www.nrf-aprts.org/IXRetail/namespace/%27);
DECLARE bmw NAMESPACE 'BMW-EXTENSIONS';

DECLARE reftr REFERENCE TO InputRoot.XMLNSC.ns:Log.ns:Transaction;
DECLARE refImmediateTransaction REFERENCE TO reftr.ns:ImmediateTransaction;
SET str0hdr = refImmediateTransaction.bmw:*[1].bmw:Header.bmw:GroceryTerminal;

Can any body please let me know what should be the equivalent java code for the above segment??

In the Java Compute Node, If I directly try to access the value without considering the name space, then I can get something (which is not correct):

Code:

MbElement string20Header = inputBody.getFirstElementByPath("./Log/Transaction/ImmediateTransaction/SignOff/Header/GroceryTerminal");
String stre = string20Header.getValueAsString();

But here, logically , I am not getting the desired result as I need the first occurence of "SignOff" with 'BMW' namespace --- Which is correctly coded in ESQL. SO I need assistance to formulate that Java code to that ESQL into Perfect Java.

Thanks in advance.

mqjeff

Posted: Tue Aug 07, 2012 5:14 am Post subject:

Grand Master

Joined: 25 Jun 2008
Posts: 17447

You should consider Using Xpath.

Note also that MBElement has a namespace attribute as well.

mattfarney

Posted: Wed Aug 08, 2012 3:20 pm Post subject:

Disciple

Joined: 17 Jan 2006
Posts: 167
Location: Ohio

I don't have the ability to test either of these, but did you try the full path?

Code:

("./Log/Transaction/ImmediateTransaction/BMW:SignOff/BMW:Header/BMW:GroceryTerminal");

or more explicitly

Code:

("./Log/Transaction/ImmediateTransaction/BMW-EXTENSIONS:SignOff/BMW-EXTENSIONS:Header/BMW-EXTENSIONS:GroceryTerminal");

-mf

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