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[Universe/XDOM api] How to insert an xml fragment from string into an existing DomHandle ?

  • June 22, 2022
  • 5 replies
  • 1 view
C

Hello,

Im using XDOM api in Universe 11.3.1 and I'm trying to import 'an xml fragment' from string into a current nodeHandle.

Explanations :

1 - Im creating an handle with XDOMOpen 
2 - Im appending a node into this handle
Example, at this time, my handle is a tree like this :
<root>
  <child>
  </child>
</root>

3 - Im using XDOMLocate to get a new handle to "child" node, nammed childNodeHandle.
4 - Now, I want to append to childNodeHandle an 'xml fragment' from a string (for example '<subChild><subSubChild><subSubSubChild></subSubSubChild></subSubChild></subChild>')

Problem : if I do a new XDOMOpen with this fragment and get a fragmentHandle, I cant use XDOMIAppend/XDOMInsert(childNodeHandle....fragmentHandle) because childNodeHandle and fragmentHandle are not in the same tree in memory - its normal (I got this error  : DOM Exception code: 4 (A node is used in a different document than the one that created it (that doesn't support it))

I cant use XDOMCreateNode either because XDOMCreateNode only allow to add ONE node, not a fragment.

=> I havent found a solution to insert this xml fragment into childNodeHandle without browsing recursively all nodes from fragmentHandle (and it is really really wordy...)

I think XDOM api is using java api like org.w3c.dom, or axis, xerces, who provides 'importNode' function but there is no implementation like XDOMImport.

Have you an idea for achieving this goal without browsing all nodes from fragment handle ?

Thanks for your help,
Corentin

Best answer by Mike Rajkowski

Hello,

Im using XDOM api in Universe 11.3.1 and I'm trying to import 'an xml fragment' from string into a current nodeHandle.

Explanations :

1 - Im creating an handle with XDOMOpen 
2 - Im appending a node into this handle
Example, at this time, my handle is a tree like this :
<root>
  <child>
  </child>
</root>

3 - Im using XDOMLocate to get a new handle to "child" node, nammed childNodeHandle.
4 - Now, I want to append to childNodeHandle an 'xml fragment' from a string (for example '<subChild><subSubChild><subSubSubChild></subSubSubChild></subSubChild></subChild>')

Problem : if I do a new XDOMOpen with this fragment and get a fragmentHandle, I cant use XDOMIAppend/XDOMInsert(childNodeHandle....fragmentHandle) because childNodeHandle and fragmentHandle are not in the same tree in memory - its normal (I got this error  : DOM Exception code: 4 (A node is used in a different document than the one that created it (that doesn't support it))

I cant use XDOMCreateNode either because XDOMCreateNode only allow to add ONE node, not a fragment.

=> I havent found a solution to insert this xml fragment into childNodeHandle without browsing recursively all nodes from fragmentHandle (and it is really really wordy...)

I think XDOM api is using java api like org.w3c.dom, or axis, xerces, who provides 'importNode' function but there is no implementation like XDOMImport.

Have you an idea for achieving this goal without browsing all nodes from fragment handle ?

Thanks for your help,
Corentin

Corentin,

Ok, I see the issue, if you have two XML documents, and want to add one as a child of the other, you will need to use the XDOMImportNode to get them both using the same XDOM.

i.e.
*
$INCLUDE UNIVERSE.INCLUDE XML.H
*
dupFlag = 0
xmlDocument = "<root><child></child></root>"
* Open the original XML
ST = XDOMOpen(xmlDocument, XML.FROM.STRING, domHandle); GOSUB CHECK_ST
* Navigate to where you want to insert the other xml
xpathString = "/root/child"; nsMap = ""
ST = XDOMLocate(domHandle, xpathString, nsMap, nodeHandle); GOSUB CHECK_ST
* Open the other XML
to_add = "<subChild><subSubChild><subSubSubChild>Stuff to add</subSubSubChild></subSubChild></subChild>"
ST = XDOMOpen(to_add, XML.FROM.STRING, xml_to_add); GOSUB CHECK_ST
* Navigate to the first element
other_path = "/subChild"
ST = XDOMLocate(xml_to_add, other_path, nsMap, newNodeHandle); GOSUB CHECK_ST
* Import the new XML into the XDOM of the original XML
ST = XDOMImportNode(nodeHandle, newNodeHandle, XDOM.TRUE, newHandle); GOSUB CHECK_ST
* Add the new XML to the original XML
ST = XDOMAddChild(nodeHandle, xpathString, nsMap, newHandle, dupFlag); GOSUB CHECK_ST
doc = ""
ST = XDOMWrite(domHandle, doc, XML.TO.STRING)
CRT doc
STOP
CHECK_ST:
IF ST = XML.SUCCESS THEN
CRT "OK"
END ELSE
CRT "ISSUE WITH LAST COMMAND"
ST = XMLGetError(errorCode, errorMessage)
CRT errorCode
CRT errorMessage
END
RETURN

> RUN BP FORUM
OK
OK
OK
OK
OK
OK
<?xml version="1.1" encoding="UTF-8" standalone="no" ?>
<root>

<child>
<subChild>
<subSubChild>
<subSubSubChild>Stuff to add</subSubSubChild>
</subSubChild>
</subChild>
</child>

</root>


Mike Rajkowski
Rocket Software

    5 replies

    C
    • Corentin Leblanc
    • Author
    • Participating Frequently
    • 5 replies
    • July 19, 2022

    Hello,

    Im using XDOM api in Universe 11.3.1 and I'm trying to import 'an xml fragment' from string into a current nodeHandle.

    Explanations :

    1 - Im creating an handle with XDOMOpen 
    2 - Im appending a node into this handle
    Example, at this time, my handle is a tree like this :
    <root>
      <child>
      </child>
    </root>

    3 - Im using XDOMLocate to get a new handle to "child" node, nammed childNodeHandle.
    4 - Now, I want to append to childNodeHandle an 'xml fragment' from a string (for example '<subChild><subSubChild><subSubSubChild></subSubSubChild></subSubChild></subChild>')

    Problem : if I do a new XDOMOpen with this fragment and get a fragmentHandle, I cant use XDOMIAppend/XDOMInsert(childNodeHandle....fragmentHandle) because childNodeHandle and fragmentHandle are not in the same tree in memory - its normal (I got this error  : DOM Exception code: 4 (A node is used in a different document than the one that created it (that doesn't support it))

    I cant use XDOMCreateNode either because XDOMCreateNode only allow to add ONE node, not a fragment.

    => I havent found a solution to insert this xml fragment into childNodeHandle without browsing recursively all nodes from fragmentHandle (and it is really really wordy...)

    I think XDOM api is using java api like org.w3c.dom, or axis, xerces, who provides 'importNode' function but there is no implementation like XDOMImport.

    Have you an idea for achieving this goal without browsing all nodes from fragment handle ?

    Thanks for your help,
    Corentin

    No one to help me?
    Mike Rajkowski
    Forum|alt.badge.img+1
    • Mike RajkowskiRocketeer
    • Rocketeer
    • 162 replies
    • July 19, 2022

    Hello,

    Im using XDOM api in Universe 11.3.1 and I'm trying to import 'an xml fragment' from string into a current nodeHandle.

    Explanations :

    1 - Im creating an handle with XDOMOpen 
    2 - Im appending a node into this handle
    Example, at this time, my handle is a tree like this :
    <root>
      <child>
      </child>
    </root>

    3 - Im using XDOMLocate to get a new handle to "child" node, nammed childNodeHandle.
    4 - Now, I want to append to childNodeHandle an 'xml fragment' from a string (for example '<subChild><subSubChild><subSubSubChild></subSubSubChild></subSubChild></subChild>')

    Problem : if I do a new XDOMOpen with this fragment and get a fragmentHandle, I cant use XDOMIAppend/XDOMInsert(childNodeHandle....fragmentHandle) because childNodeHandle and fragmentHandle are not in the same tree in memory - its normal (I got this error  : DOM Exception code: 4 (A node is used in a different document than the one that created it (that doesn't support it))

    I cant use XDOMCreateNode either because XDOMCreateNode only allow to add ONE node, not a fragment.

    => I havent found a solution to insert this xml fragment into childNodeHandle without browsing recursively all nodes from fragmentHandle (and it is really really wordy...)

    I think XDOM api is using java api like org.w3c.dom, or axis, xerces, who provides 'importNode' function but there is no implementation like XDOMImport.

    Have you an idea for achieving this goal without browsing all nodes from fragment handle ?

    Thanks for your help,
    Corentin

    Sorry I did not answer sooner, but I am not 100% sure what you are trying to do.  

    Here is a simple program that may help:
    *
    $INCLUDE UNIVERSE.INCLUDE XML.H
    *
    xmlDocument = "<root><child></child></root>"
    ST = XDOMOpen(xmlDocument, XML.FROM.STRING, domHandle); GOSUB CHECK_ST
    xpathString = "/root/child"; nsMap = ""
    ST = XDOMLocate(domHandle, xpathString, nsMap, nodeHandle); GOSUB CHECK_ST
    nodeName = "subChild"; nodeValue = ""; nodeType = XDOM.ELEMENT.NODE
    ST = XDOMCreateNode(nodeHandle, nodeName, nodeValue, nodeType, newnodeHandle); GOSUB CHECK_ST
    dupFlag = 0
    ST = XDOMAddChild(nodeHandle, xpathString, nsMap, newnodeHandle, dupFlag); GOSUB CHECK_ST
    doc = ""
    ST = XDOMWrite(domHandle, doc, XML.TO.STRING)
    CRT doc
    STOP
    CHECK_ST:
    IF ST = XML.SUCCESS THEN
    CRT "OK"
    END ELSE
    CRT "ISSUE WITH LAST COMMAND"
    ST = XMLGetError(errorCode, errorMessage)
    CRT errorCode
    CRT errorMessage
    END
    RETURN

    >RUN BP FORUM
    OK
    OK
    OK
    OK
    <?xml version="1.1" encoding="UTF-8" standalone="no" ?>
    <root>

    <child>
    <subChild/>
    </child>

    </root>

    Mike Rajkowski
    Rocket Software
    C
    • Corentin Leblanc
    • Author
    • Participating Frequently
    • 5 replies
    • July 20, 2022

    Hello,

    Im using XDOM api in Universe 11.3.1 and I'm trying to import 'an xml fragment' from string into a current nodeHandle.

    Explanations :

    1 - Im creating an handle with XDOMOpen 
    2 - Im appending a node into this handle
    Example, at this time, my handle is a tree like this :
    <root>
      <child>
      </child>
    </root>

    3 - Im using XDOMLocate to get a new handle to "child" node, nammed childNodeHandle.
    4 - Now, I want to append to childNodeHandle an 'xml fragment' from a string (for example '<subChild><subSubChild><subSubSubChild></subSubSubChild></subSubChild></subChild>')

    Problem : if I do a new XDOMOpen with this fragment and get a fragmentHandle, I cant use XDOMIAppend/XDOMInsert(childNodeHandle....fragmentHandle) because childNodeHandle and fragmentHandle are not in the same tree in memory - its normal (I got this error  : DOM Exception code: 4 (A node is used in a different document than the one that created it (that doesn't support it))

    I cant use XDOMCreateNode either because XDOMCreateNode only allow to add ONE node, not a fragment.

    => I havent found a solution to insert this xml fragment into childNodeHandle without browsing recursively all nodes from fragmentHandle (and it is really really wordy...)

    I think XDOM api is using java api like org.w3c.dom, or axis, xerces, who provides 'importNode' function but there is no implementation like XDOMImport.

    Have you an idea for achieving this goal without browsing all nodes from fragment handle ?

    Thanks for your help,
    Corentin

    Thank you for your reply Mike

    Your solution is ok for adding ONE node nammed 'subChild' into ​'child' node with XDOMCreateNode/XDOMAddChild instructions. I know that, for adding one node into another.

    But, I'm not trying to insert just one node, but I want to insert a big xml fragment from string, with many nodes : instead of inserting a node like 'subChild', I want to insert a fragment from string like '<subChild><subSubChild><subSubSubChild>... ... ... ...</subSubSubChild></subSubChild></subChild>'

    In other words, I have a domHandle, and I want to insert a big xml string fragment inside.

    Corentin

    Mike Rajkowski
    Forum|alt.badge.img+1
    • Mike RajkowskiRocketeer
    • Rocketeer
    • 162 replies
    • Answer
    • July 20, 2022

    Hello,

    Im using XDOM api in Universe 11.3.1 and I'm trying to import 'an xml fragment' from string into a current nodeHandle.

    Explanations :

    1 - Im creating an handle with XDOMOpen 
    2 - Im appending a node into this handle
    Example, at this time, my handle is a tree like this :
    <root>
      <child>
      </child>
    </root>

    3 - Im using XDOMLocate to get a new handle to "child" node, nammed childNodeHandle.
    4 - Now, I want to append to childNodeHandle an 'xml fragment' from a string (for example '<subChild><subSubChild><subSubSubChild></subSubSubChild></subSubChild></subChild>')

    Problem : if I do a new XDOMOpen with this fragment and get a fragmentHandle, I cant use XDOMIAppend/XDOMInsert(childNodeHandle....fragmentHandle) because childNodeHandle and fragmentHandle are not in the same tree in memory - its normal (I got this error  : DOM Exception code: 4 (A node is used in a different document than the one that created it (that doesn't support it))

    I cant use XDOMCreateNode either because XDOMCreateNode only allow to add ONE node, not a fragment.

    => I havent found a solution to insert this xml fragment into childNodeHandle without browsing recursively all nodes from fragmentHandle (and it is really really wordy...)

    I think XDOM api is using java api like org.w3c.dom, or axis, xerces, who provides 'importNode' function but there is no implementation like XDOMImport.

    Have you an idea for achieving this goal without browsing all nodes from fragment handle ?

    Thanks for your help,
    Corentin

    Corentin,

    Ok, I see the issue, if you have two XML documents, and want to add one as a child of the other, you will need to use the XDOMImportNode to get them both using the same XDOM.

    i.e.
    *
    $INCLUDE UNIVERSE.INCLUDE XML.H
    *
    dupFlag = 0
    xmlDocument = "<root><child></child></root>"
    * Open the original XML
    ST = XDOMOpen(xmlDocument, XML.FROM.STRING, domHandle); GOSUB CHECK_ST
    * Navigate to where you want to insert the other xml
    xpathString = "/root/child"; nsMap = ""
    ST = XDOMLocate(domHandle, xpathString, nsMap, nodeHandle); GOSUB CHECK_ST
    * Open the other XML
    to_add = "<subChild><subSubChild><subSubSubChild>Stuff to add</subSubSubChild></subSubChild></subChild>"
    ST = XDOMOpen(to_add, XML.FROM.STRING, xml_to_add); GOSUB CHECK_ST
    * Navigate to the first element
    other_path = "/subChild"
    ST = XDOMLocate(xml_to_add, other_path, nsMap, newNodeHandle); GOSUB CHECK_ST
    * Import the new XML into the XDOM of the original XML
    ST = XDOMImportNode(nodeHandle, newNodeHandle, XDOM.TRUE, newHandle); GOSUB CHECK_ST
    * Add the new XML to the original XML
    ST = XDOMAddChild(nodeHandle, xpathString, nsMap, newHandle, dupFlag); GOSUB CHECK_ST
    doc = ""
    ST = XDOMWrite(domHandle, doc, XML.TO.STRING)
    CRT doc
    STOP
    CHECK_ST:
    IF ST = XML.SUCCESS THEN
    CRT "OK"
    END ELSE
    CRT "ISSUE WITH LAST COMMAND"
    ST = XMLGetError(errorCode, errorMessage)
    CRT errorCode
    CRT errorMessage
    END
    RETURN

    > RUN BP FORUM
    OK
    OK
    OK
    OK
    OK
    OK
    <?xml version="1.1" encoding="UTF-8" standalone="no" ?>
    <root>

    <child>
    <subChild>
    <subSubChild>
    <subSubSubChild>Stuff to add</subSubSubChild>
    </subSubChild>
    </subChild>
    </child>

    </root>


    Mike Rajkowski
    Rocket Software
    C
    • Corentin Leblanc
    • Author
    • Participating Frequently
    • 5 replies
    • July 25, 2022

    Hello,

    Im using XDOM api in Universe 11.3.1 and I'm trying to import 'an xml fragment' from string into a current nodeHandle.

    Explanations :

    1 - Im creating an handle with XDOMOpen 
    2 - Im appending a node into this handle
    Example, at this time, my handle is a tree like this :
    <root>
      <child>
      </child>
    </root>

    3 - Im using XDOMLocate to get a new handle to "child" node, nammed childNodeHandle.
    4 - Now, I want to append to childNodeHandle an 'xml fragment' from a string (for example '<subChild><subSubChild><subSubSubChild></subSubSubChild></subSubChild></subChild>')

    Problem : if I do a new XDOMOpen with this fragment and get a fragmentHandle, I cant use XDOMIAppend/XDOMInsert(childNodeHandle....fragmentHandle) because childNodeHandle and fragmentHandle are not in the same tree in memory - its normal (I got this error  : DOM Exception code: 4 (A node is used in a different document than the one that created it (that doesn't support it))

    I cant use XDOMCreateNode either because XDOMCreateNode only allow to add ONE node, not a fragment.

    => I havent found a solution to insert this xml fragment into childNodeHandle without browsing recursively all nodes from fragmentHandle (and it is really really wordy...)

    I think XDOM api is using java api like org.w3c.dom, or axis, xerces, who provides 'importNode' function but there is no implementation like XDOMImport.

    Have you an idea for achieving this goal without browsing all nodes from fragment handle ?

    Thanks for your help,
    Corentin

    Great Mike, thank you !

    This is exactly what I was looking for, but XDOMImportNode is not describe in our documentation :)
    In which version of Universe was this method added?

    Regards,
    Corentin



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