CODEWITHSUNDEEP
xmlxpathxml-parsing
pethel
pethel

Reputation: 5537

xpath getting value from children

From a name how do I get the sibbling ? I dont wont the nested ones. only the one at the same level. How is this possible?

<root available-locales="en_US" default-locale="en_US">
    <dynamic-element instance-id="qk6m4eST" name="image" type="image" index-type="">
        <dynamic-element instance-id="fHkE2dfT" name="subimage" type="image" index-type="">
            <dynamic-element instance-id="jbthDbC4" name="x" type="text" index-type="">
               <dynamic-content>23</dynamic-content>
            </dynamic-element>
            <dynamic-element instance-id="Rb3qRF6N" name="y" type="text" index-type="">
                <dynamic-content>32</dynamic-content>
            </dynamic-element>
            <dynamic-content><![CDATA[C:\fakepath\images (1).jpeg]]></dynamic-content>
        </dynamic-element>
        <dynamic-content><![CDATA[C:\fakepath\images (1).jpeg]]></dynamic-content>
    </dynamic-element>
    <dynamic-element instance-id="MFrJW4OR" name="image" type="image" index-type="">
        <dynamic-element instance-id="hjKEtVB6" name="subimage" type="image" index-type="">
            <dynamic-element instance-id="NrY9iZ4K" name="x" type="text" index-type="">
                <dynamic-content>23</dynamic-content>
            </dynamic-element>
            <dynamic-element instance-id="7lG7RuAC" name="y" type="text" index-type="">
                <dynamic-content>32</dynamic-content>
            </dynamic-element>
            <dynamic-content><![CDATA[C:\fakepath\grillat.jpeg]]></dynamic-content>
        </dynamic-element>
        <dynamic-content><![CDATA[C:\fakepath\images (1).jpeg]]></dynamic-content>
    </dynamic-element>
</root>

This is my code so far. It prints

test...... 23

Thats the value of first nested child. 23

public List<PopupImage> getImageNodes(Document document) {
    List<Node> nodes = document.selectNodes("/root/dynamic-element[@name='" + IMAGE_NODE_NAME + "']");

    List<PopupImage> popupImages = new ArrayList<PopupImage>();
    for (Node node : nodes) {
        // node.selectSingleNode("//following-sibling::dynamic-content[1]").getText();
        System.out.println("test...... " + node.selectSingleNode("//following-sibling::dynamic-content").getText());
        createPopupImage(node);
        popupImages.add(createPopupImage(node));
    }
    return popupImages;
}

edit: I need every image node and the value of the dynamic value within it.

<root>
    <dynamic-element name=image>
         <dynamic-element name=subimage/>
         <dynamic-content>content1</dynamic-content> 
    </dynamic-element>  

     <dynamic-element name=image>
         <dynamic-element name=subimage/>
         <dynamic-content>content2</dynamic-content>  
    </dynamic-element> 
</root>

edit2:

To clarify more. I need to pair each image node with dynamic content in it.

Upvotes: 2

Views: 905

Answers (2)

Dimitre Novatchev
Dimitre Novatchev

Reputation: 243459

Use:

/*/dynamic-element[@name='image'][1]/dynamic-content

This selects any dynamic-content that is a child of the dynamic-element that is the first dynamic-element child of the top element, and whose name attribute's string value is the string "image".

And this XPath expression:

/*/dynamic-element[@name='image']/dynamic-content

selects:

<dynamic-content>C:\fakepath\images (1).jpeg</dynamic-content>
<dynamic-content>C:\fakepath\images (1).jpeg</dynamic-content>

If you want just the text nodes, use:

/*/dynamic-element[@name='image']/dynamic-content/text()

This selects the following two text-node children of the elements selected by the previous expression:

C:\fakepath\images (1).jpeg
C:\fakepath\images (1).jpeg

You can get the value of the selected nodes by iterating on the returned XmlNodeList and obtaining the value of each XmlNode object contained there.

Upvotes: 1

O. R. Mapper
O. R. Mapper

Reputation: 20710

Currently, after selecting a <dynamic-element> element, you run the following XPath:

//following-sibling::dynamic-content

Let's look at what this means:

  • //: Move back to the document root and consider all nodes, nested at whatever level.
  • following-sibling::: Find a node that is a sibling of a preceding node (i.e. on the same nesting level and with the same parent node).
  • dynamic-content: This sibling node must be a <dynamic-content> element.

This is not what you want as described in your text.

Rather, you want to find a following sibling of the current node. That sibling will be a <dynamic-element> element. In that sibling, you want to find a child node, namely a <dynamic-content> element.

Hence, try this XPath in your node.selectSingleNode call:

following-sibling::dynamic-element/dynamic-content

Upvotes: 0

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