Go

XML SearchForAttribute Method

See more XML Examples

Demonstrates the SearchForAttribute method.

The input XML, available at http://www.chilkatsoft.com/data/fruitSearch.xml, is this:

<root>
    <searchRoot>
        <fruit color="red">apple</fruit>
        <fruit color="green">pear</fruit>
        <veg color="orange">carrot</veg>
        <meat animal="cow">beef</meat>
        <xyz>
            <fruit color="blue">blueberry</fruit>
            <veg color="green">broccoli</veg>
        </xyz>
        <fruit color="purple">grape</fruit>
        <cheese color="yellow">cheddar</cheese>
    </searchRoot>
    <fruit color="red">strawberry</fruit>
    <fruit color="orange">peach</fruit>
</root>

Go

    success := false

    xml := chilkat.NewXml()
    // xSearchRoot is a Xml
    // xBeginAfter is a Xml
    // xFound is a Xml

    success = xml.LoadXmlFile("qa_data/xml/fruitSearch.xml")
    if success != true {
        fmt.Println(xml.LastErrorText())
        xml.DisposeXml()
        return
    }

    // Search the sub-tree rooted at "searchRoot"
    xSearchRoot := xml.FindChild("searchRoot")
    if xml.LastMethodSuccess() == false {
        fmt.Println("searchRoot not found, searching from root.")
        xSearchRoot = xml.GetRoot()
    }

    // Search for all "fruit" nodes having a color attribute
    // where the name of the color ends in "e"
    xBeginAfter := xSearchRoot.GetSelf()
    xFound := xSearchRoot.SearchForAttribute(xBeginAfter,"fruit","color","*e")
    for (xSearchRoot.LastMethodSuccess() == true) {

        fmt.Println(xFound.Content(), ": ", *xFound.GetAttrValue("color"))

        xBeginAfter.DisposeXml()
        xBeginAfter = xFound
        xFound = xSearchRoot.SearchForAttribute(xBeginAfter,"fruit","color","*e")
    }

    // The correct output is:
    // grape: purple
    // blueberry: blue

    xBeginAfter.DisposeXml()

    fmt.Println("--------------------------")

    // ---------------------------------------------------------------------------------
    // Now do the same, but instead use SearchForAttribute2
    // which updates the internal reference of the caller instead
    // of returning the found node.
    // xSearch is a Xml

    xBeginAfter = xSearchRoot.GetSelf()
    xSearch := xSearchRoot.GetSelf()

    success = xSearch.SearchForAttribute2(xBeginAfter,"fruit","color","*e")
    for success == true {

        fmt.Println(xSearch.Content(), ": ", *xSearch.GetAttrValue("color"))

        // Copy the internal references so that the next search
        // begins after the found node.
        xBeginAfter.CopyRef(xSearch)
        xSearch.CopyRef(xSearchRoot)

        success = xSearch.SearchForAttribute2(xBeginAfter,"fruit","color","*e")
    }

    xSearch.DisposeXml()
    xBeginAfter.DisposeXml()

    xSearchRoot.DisposeXml()

    xml.DisposeXml()