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XML Fuel Allowance
XML Fuel Allowance

XML Fuel Allowance

Medium

Instructions

Problem statement

Every employee of ABC Corp receives an unlimited fuel allowance. Employees are required to send a record every time they fill up their vehicles. These records are appended to the same XML file and processed at the month's end.

As a member of the digital operations team, your task is to read this XML file and write the results to another XML file. The output file should contain an entry for each employee with the following details:

You are given two string arguments.

  1. Input XML file path.
  2. Output XML file path.

Input XML file content will have the following XML schema.

<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" 
    targetNamespace="http://www.so2w.org" 
    xmlns:tns="http://www.so2w.org" 
    elementFormDefault="qualified">

    <xs:element name="FuelEvents">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="FuelEvent" type="tns:FuelUpEvent" nillable="true" minOccurs="0" maxOccurs="1000"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>

    <xs:complexType name="FuelEvent">
        <xs:sequence>
            <xs:element name="odometerReading" type="xs:integer"/>
            <xs:element name="gallons" type="xs:decimal"/>
            <xs:element name="gasPrice" type="xs:decimal"/>
        </xs:sequence>
        <xs:attribute name="employeeId" type="xs:integer" use="required"/>
    </xs:complexType>
</xs:schema>

Your task is to transform the XML input to the following XML format and write the content to the given path. The output file should contain an entry for each employee, sorted in ascending order by the employeeId.

<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
   targetNamespace="http://www.so2w.org"
   xmlns:tns="http://www.so2w.org"
   elementFormDefault="qualified">
 
   <xs:element name="employeeFuelRecords">
       <xs:complexType>
           <xs:sequence>
               <xs:element name="employeeFuelRecord" type="tns:employeeFuelRecord" nillable="true" minOccurs="0" maxOccurs="97"/>
           </xs:sequence>
       </xs:complexType>
   </xs:element>
 
   <xs:complexType name="employeeFuelRecord">
       <xs:sequence>
           <xs:element name="gasFillUpCount" type="xs:integer"/>
           <xs:element name="totalFuelCost" type="xs:decimal"/>
           <xs:element name="totalGallons" type="xs:decimal"/>
           <xs:element name="totalMilesAccrued" type="xs:integer"/>
       </xs:sequence>
       <xs:attribute name="employeeId" type="xs:integer" use="required"/>
   </xs:complexType>
</xs:schema>

Constraints

  • Number of fill-up records n in the input XML file: 0 <= n <= 1000
  • Number of employees in the company: 97
  • Gas price is per gallon
  • No missing fill-up records

Example 1

  • Input: example01_input.xml
<s:FuelEvents xmlns:s="http://www.so2w.org">
    <s:FuelEvent employeeId="2312">
        <s:odometerReading>230</s:odometerReading>
        <s:gallons>18.561</s:gallons>
        <s:gasPrice>4.56</s:gasPrice>
    </s:FuelEvent>
    <s:FuelEvent employeeId="2312">
        <s:odometerReading>500</s:odometerReading>
        <s:gallons>19.345</s:gallons>
        <s:gasPrice>4.89</s:gasPrice>
    </s:FuelEvent>
</s:FuelEvents>
  • Output: example01_output.xml
<s:employeeFuelRecords xmlns:s="http://www.so2w.org">
    <s:employeeFuelRecord employeeId="2312">
        <s:gasFillUpCount>2</s:gasFillUpCount>
        <s:totalFuelCost>179.23521</s:totalFuelCost>
        <s:totalGallons>37.906</s:totalGallons>
        <s:totalMilesAccrued>270</s:totalMilesAccrued>
    </s:employeeFuelRecord>
</s:employeeFuelRecords>

Example 2

  • Input: example02_input.xml
<s:FuelEvents xmlns:s="http://www.so2w.org">
    <s:FuelEvent employeeId="2413">
        <s:odometerReading>4089</s:odometerReading>
        <s:gallons>21.682</s:gallons>
        <s:gasPrice>3.46</s:gasPrice>
    </s:FuelEvent>
    <s:FuelEvent employeeId="3423">
        <s:odometerReading>6582</s:odometerReading>
        <s:gallons>15.248</s:gallons>
        <s:gasPrice>4.56</s:gasPrice>
    </s:FuelEvent>
    <s:FuelEvent employeeId="2413">
        <s:odometerReading>4127</s:odometerReading>
        <s:gallons>4.221</s:gallons>
        <s:gasPrice>3.40</s:gasPrice>
    </s:FuelEvent>
    <s:FuelEvent employeeId="2413">
        <s:odometerReading>4349</s:odometerReading>
        <s:gallons>11.192</s:gallons>
        <s:gasPrice>4.10</s:gasPrice>
    </s:FuelEvent>
    <s:FuelEvent employeeId="3423">
        <s:odometerReading>6767</s:odometerReading>
        <s:gallons>8.696</s:gallons>
        <s:gasPrice>3.34</s:gasPrice>
    </s:FuelEvent>
    <s:FuelEvent employeeId="2413">
        <s:odometerReading>4547</s:odometerReading>
        <s:gallons>9.197</s:gallons>
        <s:gasPrice>2.90</s:gasPrice>
    </s:FuelEvent>
</s:FuelEvents>
  • Output: example02_output.xml
<s:employeeFuelRecords xmlns:s="http://www.so2w.org">
    <s:employeeFuelRecord employeeId="2413">
        <s:gasFillUpCount>4</s:gasFillUpCount>
        <s:totalFuelCost>161.92962</s:totalFuelCost>
        <s:totalGallons>46.292</s:totalGallons>
        <s:totalMilesAccrued>458</s:totalMilesAccrued>
    </s:employeeFuelRecord>
    <s:employeeFuelRecord employeeId="3423">
        <s:gasFillUpCount>2</s:gasFillUpCount>
        <s:totalFuelCost>98.57552</s:totalFuelCost>
        <s:totalGallons>23.944</s:totalGallons>
        <s:totalMilesAccrued>185</s:totalMilesAccrued>
    </s:employeeFuelRecord>
</s:employeeFuelRecords>

Hints

Last updated 21 December 2022
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