(SQL Server) ExtractChildByName using a Tag Path

Demonstrates calling ExtractChildByName with a tag path.

This example requires Chilkat v9.5.0.64 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @xml int
    -- Use "Chilkat_9_5_0.Xml" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Xml', @xml OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OASetProperty @xml, 'Tag', 'world'

    -- This example uses features introduced in v9.5.0.64
    EXEC sp_OAMethod @xml, 'NewChild2', NULL, 'north_america|united_states|california|san_francisco', 'Silicon Valley'
    EXEC sp_OAMethod @xml, 'NewChild2', NULL, 'north_america|united_states|california|san_diego', 'Birthplace of California'
    EXEC sp_OAMethod @xml, 'NewChild2', NULL, 'north_america|united_states|illinois|chicago', 'Windy City'

    EXEC sp_OAMethod @xml, 'GetXml', @sTmp0 OUT
    PRINT @sTmp0

    -- Produces the following XML
    -- 
    -- 	<?xml version="1.0" encoding="utf-8" ?>
    -- 	<world>
    -- 	    <north_america>
    -- 	        <united_states>
    -- 	            <california>
    -- 	                <san_francisco>Silicon Valley</san_francisco>
    -- 	                <san_diego>Birthplace of California</san_diego>
    -- 	            </california>
    -- 	            <illinois>
    -- 	                <chicago>Windy City</chicago>
    -- 	            </illinois>
    -- 	        </united_states>
    -- 	    </north_america>
    -- 	</world>
    -- 

    DECLARE @xCalif int
    EXEC sp_OAMethod @xml, 'ExtractChildByName', @xCalif OUT, 'north_america|united_states|california', '', ''

    EXEC sp_OAMethod @xCalif, 'GetXml', @sTmp0 OUT
    PRINT @sTmp0
    EXEC @hr = sp_OADestroy @xCalif

    -- xCalif contains:

    -- 	<?xml version="1.0" encoding="utf-8" ?>
    -- 	<california>
    -- 	    <san_francisco>Silicon Valley</san_francisco>
    -- 	    <san_diego>Birthplace of California</san_diego>
    -- 	</california>

    EXEC sp_OAMethod @xml, 'GetXml', @sTmp0 OUT
    PRINT @sTmp0

    -- xml now contains:

    -- 	<?xml version="1.0" encoding="utf-8" ?>
    -- 	<world>
    -- 	    <north_america>
    -- 	        <united_states>
    -- 	            <illinois>
    -- 	                <chicago>Windy City</chicago>
    -- 	            </illinois>
    -- 	        </united_states>
    -- 	    </north_america>
    -- 	</world>

    EXEC @hr = sp_OADestroy @xml


END
GO