Ruby

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.

Ruby

require 'chilkat'

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

xml = Chilkat::CkXml.new()

xml.put_Tag("tripleNested")

i = 0
j = 0
k = 0

sbValue = Chilkat::CkStringBuilder.new()
bAutoCreate = true

while i < 3
    xml.put_I(i)
    j = 0
    while j < 4
        xml.put_J(j)
        k = 0
        while k < 2
            xml.put_K(k)

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

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

print xml.getXml() + "\n";

# 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
aCount = xml.get_NumChildren()
while i < aCount
    xml.put_I(i)
    j = 0
    bCount = xml.NumChildrenAt("a[i]")
    while j < bCount
        xml.put_J(j)
        k = 0
        cCount = xml.NumChildrenAt("a[i]|b[j]")
        while k < cCount
            xml.put_K(k)
            print i.to_s() + ", " + j.to_s() + ", " + k.to_s() + ": " + xml.GetChildIntValue("a[i]|b[j]|c[k]").to_s() + "\n";
            k = k + 1
        end
        j = j + 1
    end
    i = i + 1
end

# 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
#