SQL Server

Demonstrate the XML FindNextRecord Method

See more XML Examples

Imagine we have an XML file as follows:

<CompleteMultipartUpload>
  <Part>
    <PartNumber>1</PartNumber>
    <ETag>abc</ETag>
  </Part>
  <Part>
    <PartNumber>2</PartNumber>
    <ETag>def</ETag>
  </Part>
  <Part>
    <PartNumber>3</PartNumber>
    <ETag>ghi</ETag>
  </Part>
</CompleteMultipartUpload>

We want to find the record where PartNumber = 2. To do so, we simply position ourselves at the first "Part" tag, and then call FindNextRecord. (See below..) SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @xml int
    EXEC @hr = sp_OACreate 'Chilkat.Xml', @xml OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int
    EXEC sp_OAMethod @xml, 'LoadXmlFile', @success OUT, 'qa_data/xml/multipartUpload.xml'

    -- Position ourselves at the 1st record.
    EXEC sp_OAMethod @xml, 'GetChild2', @success OUT, 0

    DECLARE @foundRec int
    EXEC sp_OAMethod @xml, 'FindNextRecord', @foundRec OUT, 'PartNumber', '2'
    EXEC sp_OAGetProperty @xml, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 1
      BEGIN

        PRINT 'Found the record where PartNumber = 2.'
        EXEC sp_OAMethod @foundRec, 'GetXml', @sTmp0 OUT
        PRINT @sTmp0

        -- Let's examine the ETag for this record...

        EXEC sp_OAMethod @foundRec, 'GetChildContent', @sTmp0 OUT, 'ETag'
        PRINT 'ETag for PartNumber 2 = ' + @sTmp0
        EXEC @hr = sp_OADestroy @foundRec

      END
    ELSE
      BEGIN

        PRINT 'No record exists where PartNumber = 2.'
      END

    -- What if we want to find the record where ETag = "abc"?
    EXEC sp_OAMethod @xml, 'FindNextRecord', @foundRec OUT, 'ETag', 'abc'
    EXEC sp_OAGetProperty @xml, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 1
      BEGIN

        PRINT 'Found the record where ETag = abc'
        EXEC sp_OAMethod @foundRec, 'GetXml', @sTmp0 OUT
        PRINT @sTmp0

        -- Let's examine the PartNumber for this record...

        EXEC sp_OAMethod @foundRec, 'GetChildContent', @sTmp0 OUT, 'PartNumber'
        PRINT 'Part number for Etag(abc) = ' + @sTmp0
        EXEC @hr = sp_OADestroy @foundRec

      END
    ELSE
      BEGIN

        PRINT 'No record exists where ETag = abc.'
      END

    -- Go back to the XML root..
    EXEC sp_OAMethod @xml, 'GetRoot2', NULL

    EXEC @hr = sp_OADestroy @xml


END
GO