How to loop through XML data in a table of XMLType?

Question

Hi,
I am failry new to xml document processing in Oracle using PL/SQL.
My DB version: Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
I have successfully loaded an xml document into a table using the following two statements:
1) CREATE TABLE mytable2 OF XMLType;
2) INSERT INTO mytable2 VALUES (XMLType(bfilename('IMAGE_FILE_LOC', 'IFTDISB20100330172157C002.xml'), nls_charset_id('AL32UTF8')));
Now I need to traverse through the various nodes within the xml document and extract values of elements of each node. The question I have is:
How do I loop through a node? A VALID record is enclosed within the <checkItem> </checkItem> tags.
Here is a snippet of the data in that xml document:
++++++++++++++++++++++++++++++++++++++++++++++++
<?xml version="1.0" encoding="UTF-8"?>
<bdiData>
<documentControlInfo>
<documentInfo>
<docDescription>Check images and data for Test Company, account number 1234567890</docDescription>
<docID>
<ID>20100330172157</ID>
</docID>
<docModifier>Test Company</docModifier>
<docCreateDate>2010-03-30</docCreateDate>
<docCreateTime>17:21:57-0700</docCreateTime>
<standardVersion>1.0</standardVersion>
<testIndicator>0</testIndicator>
<resendIndicator>0</resendIndicator>
</documentInfo>
<sourceInfo>
<sourceName>The Bank IFT</sourceName>
<sourceID>
<idOther>TheBankIFT</idOther>
</sourceID>
</sourceInfo>
<destinationInfo>
<destinationName>Test Company</destinationName>
<destinationID>
<idOther>FEI3592</idOther>
</destinationID>
</destinationInfo>
</documentControlInfo>
<checkItemCollection>
<collectionInfo>
<description>Items</description>
<ID>1269994919135</ID>
<Classification>
<classification>Items</classification>
</Classification>
</collectionInfo>
<checkItemBatch>
<checkItemBatchInfo>
<description>Paid Checks</description>
<ID>1269994919135</ID>
<Classification>
<classification>Paid Checks</classification>
</Classification>
</checkItemBatchInfo>
<checkItem>
<checkItemType>check</checkItemType>
<checkAmount>86468</checkAmount>
<postingInfo>
<date>2010-03-29</date>
<RT>10700543</RT>
<accountNumber>1234567890</accountNumber>
<seqNum>009906631032</seqNum>
<trancode>001051</trancode>
<amount>86468</amount>
<serialNumber>300040647</serialNumber>
</postingInfo>
<totalImageViewsDelivered>2</totalImageViewsDelivered>
<imageView>
<imageIndicator>Actual Item Image Present</imageIndicator>
<imageViewInfo>
<Format>
<Baseline>TIF</Baseline>
</Format>
<Compression>
<Baseline>CCITT</Baseline>
</Compression>
<ViewSide>Front</ViewSide>
<imageViewLocator>
<imageRefKey>201003260000738400851844567205_Front.TIF</imageRefKey>
<imageFileLocator>IFTDISB20100330172157M002.zip</imageFileLocator>
</imageViewLocator>
</imageViewInfo>
<imageViewInfo>
<Format>
<Baseline>TIF</Baseline>
</Format>
<Compression>
<Baseline>CCITT</Baseline>
</Compression>
<ViewSide>Rear</ViewSide>
<imageViewLocator>
<imageRefKey>201003260000738400851844567205_Rear.TIF</imageRefKey>
<imageFileLocator>IFTDISB20100330172157M002.zip</imageFileLocator>
</imageViewLocator>
</imageViewInfo>
</imageView>
</checkItem>
<checkItem>
<checkItemType>check</checkItemType>
<checkAmount>045</checkAmount>
<postingInfo>
<date>2010-03-29</date>
<RT>10700543</RT>
<accountNumber>1234567890</accountNumber>
<seqNum>008518967429</seqNum>
<trancode>001051</trancode>
<amount>045</amount>
<serialNumber>200244935</serialNumber>
</postingInfo>
<totalImageViewsDelivered>2</totalImageViewsDelivered>
<imageView>
<imageIndicator>Actual Item Image Present</imageIndicator>
<imageViewInfo>
<Format>
<Baseline>TIF</Baseline>
</Format>
<Compression>
<Baseline>CCITT</Baseline>
</Compression>
<ViewSide>Front</ViewSide>
<imageViewLocator>
<imageRefKey>201003290000713900851896742901_Front.TIF</imageRefKey>
<imageFileLocator>IFTDISB20100330172157M002.zip</imageFileLocator>
</imageViewLocator>
</imageViewInfo>
<imageViewInfo>
<Format>
<Baseline>TIF</Baseline>
</Format>
<Compression>
<Baseline>CCITT</Baseline>
</Compression>
<ViewSide>Rear</ViewSide>
<imageViewLocator>
<imageRefKey>201003290000713900851896742901_Rear.TIF</imageRefKey>
<imageFileLocator>IFTDISB20100330172157M002.zip</imageFileLocator>
</imageViewLocator>
</imageViewInfo>
</imageView>
</checkItem>
<checkItemBatchSummary>
<totalItemCount>1028</totalItemCount>
<totalBatchAmount>61370501</totalBatchAmount>
<totalBatchImageViewsDelivered>2056</totalBatchImageViewsDelivered>
</checkItemBatchSummary>
</checkItemBatch>
<collectionSummary>
<totalBatchCount>1</totalBatchCount>
<totalItemCount>1028</totalItemCount>
<totalCollectionAmount>61370501</totalCollectionAmount>
<totalCollectionImageViewsDelivered>2056</totalCollectionImageViewsDelivered>
</collectionSummary>
</checkItemCollection>
<documentSummaryInfo>
<totalCollectionCount>1</totalCollectionCount>
<totalBatchCount>1</totalBatchCount>
<totalItemCount>1028</totalItemCount>
<totalDocumentAmount>61370501</totalDocumentAmount>
<totalDocumentImageViewsDelivered>2056</totalDocumentImageViewsDelivered>
</documentSummaryInfo>
</bdiData>
++++++++++++++++++++++++++++++++++++++++++++++++
Any ideas and or suggestions will be greatly appreciated.
Cheers!
Edited by: user12021655 on Aug 3, 2010 1:25 PM

Answer 1

I really need to update my blog to get the example you are looking for posted. I did a quick search on the forums for XMLTable and found a good example at {message:id=4325701}. You will want to use OBJECT_VALUE in the PASSING clause where you need to reference the column in your table.
Note: See the FAQ in the upper right for how to use the tag to wrap objects to retain formatting.  Also your XML is missing closing nodes.