B4X

Demonstrate the XML I, J, and K Properties

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Demonstrates the XML I, J, and K properties. These properties can be used in paths to access the I'th, J'th, or K'th child in a path. Three indexing properties are provided to allow for triple-nested loops using this feature.

Note: This example requires Chilkat v9.5.0.64 or later.

B4X

'  Note: This example requires Chilkat v9.5.0.64 or later.

Dim xml As ChilkatXml
xml.Initialize

xml.Tag = "tripleNested"

Dim i As Int = 0
Dim j As Int = 0
Dim k As Int = 0

Dim sbValue As ChilkatStringBuilder
sbValue.Initialize
Dim bAutoCreate As Boolean = True

Do While i < 3
    xml.I = i
    j = 0
    Do While j < 4
        xml.J = j
        k = 0
        Do While k < 2
            xml.K = k

            Dim n As Int = i * 100 + j * 10 + k
            sbValue.Clear
            sbValue.AppendInt(n)

            xml.UpdateAt("a[i]|b[j]|c[k]", bAutoCreate, sbValue.GetAsString)
            k = k + 1
        Loop
        j = j + 1
    Loop
    i = i + 1
Loop

Log(xml.GetXml)

'  This is the XML
'  See below for code showing how to parse it..

'  	<?xml version="1.0" encoding="utf-8" ?>
'  	<tripleNested>
'  	    <a>
'  	        <b>
'  	            <c>0</c>
'  	            <c>1</c>
'  	        </b>
'  	        <b>
'  	            <c>10</c>
'  	            <c>11</c>
'  	        </b>
'  	        <b>
'  	            <c>20</c>
'  	            <c>21</c>
'  	        </b>
'  	        <b>
'  	            <c>30</c>
'  	            <c>31</c>
'  	        </b>
'  	    </a>
'  	    <a>
'  	        <b>
'  	            <c>100</c>
'  	            <c>101</c>
'  	        </b>
'  	        <b>
'  	            <c>110</c>
'  	            <c>111</c>
'  	        </b>
'  	        <b>
'  	            <c>120</c>
'  	            <c>121</c>
'  	        </b>
'  	        <b>
'  	            <c>130</c>
'  	            <c>131</c>
'  	        </b>
'  	    </a>
'  	    <a>
'  	        <b>
'  	            <c>200</c>
'  	            <c>201</c>
'  	        </b>
'  	        <b>
'  	            <c>210</c>
'  	            <c>211</c>
'  	        </b>
'  	        <b>
'  	            <c>220</c>
'  	            <c>221</c>
'  	        </b>
'  	        <b>
'  	            <c>230</c>
'  	            <c>231</c>
'  	        </b>
'  	    </a>
'  	</tripleNested>
'  


'  Parse the XML, without needing to know the number of children.
'  That can be discovered with the NumChildrenAt method.

i = 0
Dim aCount As Int = xml.NumChildren
Do While i < aCount
    xml.I = i
    j = 0
    Dim bCount As Int = xml.NumChildrenAt("a[i]")
    Do While j < bCount
        xml.J = j
        k = 0
        Dim cCount As Int = xml.NumChildrenAt("a[i]|b[j]")
        Do While k < cCount
            xml.K = k
            Log(i & ", " & j & ", " & k & ": " & xml.GetChildIntValue("a[i]|b[j]|c[k]"))
            k = k + 1
        Loop
        j = j + 1
    Loop
    i = i + 1
Loop

'  Output:

'  	0, 0, 0: 0
'  	0, 0, 1: 1
'  	0, 1, 0: 10
'  	0, 1, 1: 11
'  	0, 2, 0: 20
'  	0, 2, 1: 21
'  	0, 3, 0: 30
'  	0, 3, 1: 31
'  	1, 0, 0: 100
'  	1, 0, 1: 101
'  	1, 1, 0: 110
'  	1, 1, 1: 111
'  	1, 2, 0: 120
'  	1, 2, 1: 121
'  	1, 3, 0: 130
'  	1, 3, 1: 131
'  	2, 0, 0: 200
'  	2, 0, 1: 201
'  	2, 1, 0: 210
'  	2, 1, 1: 211
'  	2, 2, 0: 220
'  	2, 2, 1: 221
'  	2, 3, 0: 230
'  	2, 3, 1: 231
'