Editing large xml files

Hi,
I have an xml file of 30M. I use the following code to delete the tags with no childs. But jdom simply does not build the document and
with out any exception the application goes out of this method.
The same code works fine for smaller file e.g. 9MBs?
My question.
1. Is there any file size limit?
2. What can be the solution to this?
3. What is the best way to remove tags with no childs from xml files?
Many thanks

You an try these guys as they claim to handle large files well:
http://vtd-xml.sourceforge.net/

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How to edit an XML file in ios5.1 ?

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I have an large xml file . I need to split it into 3 small ones .For reading the XML i am using NSXMLParser . How to write xml file ? If there is need of edit some tag , how to do it ?Please guide me ....
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I don't know what your model is but if I assume a straighforward tree-structured model PresetInfo > Modality > Body, this code is the design pattern I usually use. If you don't actually need to load a model, but instead just extract a specific data element, look at the XPath query in PresetInfo.parseXmlElement, and how I get attribute and element values in the other parseXmlElements.
The model interface. I used arrays for the lists, if you need keyed access to list elements, you could use dictionaries. The top-level class PresetInfo contains methods to read the XML from a file.
@interface ModelBase : NSObject
- (id)initWithXmlElement:(GDataXMLElement *)element;
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@end
@interface PresetInfo : ModelBase
@property NSMutableArray *modalities;
- (id)initWithPath:(NSString *)path;
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@interface Modality : ModelBase
@property NSString *type;
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@property NSInteger ww;
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    if (self = [super init]) {
        self.modalities = [[NSMutableArray alloc] init];
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- (id)initWithPath:(NSString *)path
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OSB - Iterating over large XML files with content streaming

Hi @ll
I have to iterate over all item in large XML files and insert into a oracle database.
The file is about 200 MB and contains around 500'000, and I am using OSB 10gR3.
The XML structure is something like this:
<allItems>
<item>.....</item>
<item>.....</item>
<item>.....</item>
<item>.....</item>
<item>.....</item>
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Actually I thought about using a proxy service with enabled content streaming and a "for each" action for iterating
over all items. But for this the whole XML structure has to be materialized into a variable otherwise it is not possible!
More about streaming large files can be found here:
[http://download.oracle.com/docs/cd/E13159_01/osb/docs10gr3/userguide/context.html#large_messages]
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So my idea was to use the "for each" action and processing seqeuntially all items with a xpath like:
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Did I miss somehting?
Thanks a lot for helping!
Cheers
Dani
Edited by: user10095731 on 29.07.2009 06:41

Hi Dani,
Yes, according to me this would be the best approach. You can use content-streaming to pass this large xml to ejb and once it passes successfully EJB should operate on this. If you want any result back (for further routing), you can get it back from EJB.
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http://java.sun.com/developer/technicalArticles/Streams/ProgIOStreams/
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Regards,
Anuj

How to insert large xml file to XMLType column?

Hi,
I have a table with one column as XMLType(Binary XML storage option and Free Text Indexing). When i try to insert a large XML as long as 8kb, i'm getting an error ORA-01704:string literal too long.
Insert into TEST values(XMLTYPE('xml HERE'));
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Regards,
Sprightee

For a large XML file, you basically have two options - you can load the string directly as an XMLType, or you can load the string as a CLOB and cast it on the database side to an XMLType.
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Problem with parsing large XML files chunked over HTTP

I'm trying to isolate a bug that was introduced when upgrading the JRE in use from Java 7u51 to 7u71 without changing any code. The problem appears to be very similar to: Bug ID: JDK-8027359 XML parser returns incorrect parsing results.
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javax.xml.bind.UnmarshalException
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[javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,98748]
Message: Attribute name "testAttribu00Z" associated with an element type "testElement" must be followed by the ' = ' character.]
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.handleStreamException(UnmarshallerImpl.java:421)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:357)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:334)
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,98748]
Message: Attribute name "testAttribu00Z" associated with an element type "testElement" must be followed by the ' = ' character.
at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(XMLStreamReaderImpl.java:598)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:181)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:355)
... 6 more
Here's some code that seems to reproduce it if you can connect to an XML server that returns a large chunked XML file:
SchemeRegistry registry = new SchemeRegistry();
registry.register(
new Scheme("http", 80, PlainSocketFactory.getSocketFactory()));
HttpClient client = new DefaultHttpClient(new BasicClientConnectionManager(registry));
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HttpGet method = new HttpGet(url);
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InputStream inputStream = response.getEntity().getContent();
XMLStreamReader responseReader = factory.createXMLStreamReader(inputStream);
JAXBElement<JaxBObjectOfResponse> wot = unmarshaller.unmarshal(responseReader, JaxBObjectOfResponse.class);
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How can I unmarshal in a different way to avoid this problem? Or, how can I better isolate the bug so it can be posted to the appropriate bug system?

Apparently, adding the Woodstox XML libraries avoids the bug. Is there anyone who can reproduce this on another system? Was there any changes to the Stax implementation between u67 and u71 that may have introduced a bug like this?
Edit: When setting the logging level to DEBUG, I once saw the overwritten buffer being logged as if that was what was received (as in the testAttribu00Z example above). I can't repeat that anymore though, and very rarely it does parses with no exception (though it may have still been corrupted). Now the error seems to be consistently on one of the buffer boundaries, as in:
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17:08:09,705 DEBUG wire:77 - << "trend>....OTHER XML...<trend hours=""
17:08:09,705 DEBUG wire:77 - << "634.0972777777778" datetime="2013-05-21T00:43:48.350Z" t"
17:08:09,705 DEBUG wire:63 - << "[\r][\n]"
17:08:09,705 DEBUG wire:63 - << "2000[\r][\n]"
17:08:09,705 DEBUG wire:77 - << "rend-mode="0">
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at com.sun.xml.internal.bind.DatatypeConverterImpl._parseDouble(DatatypeConverterImpl.java:213)
at mypackage.Trend_JaxbXducedAccessor_hours.parse(TransducedAccessor_field_Double.java:48)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.StructureLoader.startElement(StructureLoader.java:194)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext._startElement(UnmarshallingContext.java:486)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext.startElement(UnmarshallingContext.java:465)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.InterningXmlVisitor.startElement(InterningXmlVisitor.java:60)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXStreamConnector.handleStartElement(StAXStreamConnector.java:231)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:165)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:355)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:334)
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17:19:12,563 DEBUG wire:77 - << ...OTHER XML...<trend index="5"
17:19:12,563 DEBUG wire:77 - << "" label="N"
17:19:12,563 DEBUG wire:63 - << "[\r][\n]"
Exception in thread "main" java.lang.NumberFormatException: Not a number: N
at com.sun.xml.internal.bind.DatatypeConverterImpl._parseInt(DatatypeConverterImpl.java:106)
at com.sun.xml.internal.bind.DatatypeConverterImpl._parseShort(DatatypeConverterImpl.java:118)

Is there a way to import large XML files into HANA efficiently are their any data services provided to do this?

1. Is there a way to import large XML files into HANA efficiently?
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3. Are there any data services provided to do this?
This for a project use case i also have an requirement to process bulk XML files, suggest me to accomplish this task

Hi Patrick,
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Using Odata services can we handle huge data (i.e create schema/load into Hana) On-the-fly ?
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Then I gotta transform & cleanse the data.
Can I use oData services to transform and cleanse the data ?
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here are my ideas.
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Hi,
I'm trying to parse a large XML file(15 MB) and facing a clear performance problem. A Simple XML Validation using the following code snippet:
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tempCLOB,
targetFile,
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conv_warning
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Thanks Mark,
I'll open a TAR and also upload the schema and instance XML.
If i'm not changing the track too much :-) one more thing in continuation:
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i'm getting a severe performance hit here too... the same file as above takes almost 40 mins to Insert.
code snippet:
DBMS_LOB.fileopen(targetFile, DBMS_LOB.file_readonly);
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Hi all,
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I'd try to modify the autoComplete component.
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Best technology to navigate through a very large XML file in a web page

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I have a very large XML file that needs to be displayed in my web page, may be as a tree structure. Visitors should be able to go to any level depth nodes and access the children elements or text element of those nodes.
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though. If I use a relational database and try to
access it for EACH and EVERY click the user makes,
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