xpath
자녀를 기준으로 노드를 선택하십시오.

자식 수를 기반으로 노드 선택

샘플 XML

 <Students>
    <Student>
        <Name>
            <First>Ashley</First>
            <Last>Smith</Last>
        </Name>
        <Grades>
            <Exam1>A</Exam1>
            <Exam2>B</Exam2>
            <Final>A</Final>
        </Grades>
    </Student>
    <Student>
        <Name>
            <First>Bill</First>
            <Last>Edwards</Last>
        </Name>
        <Grades>
            <Exam1>A</Exam1>
        </Grades>
    </Student>    
</Students>

XPath

성적이 2 학년 이상인 모든 학생을 선택하십시오.

//Student[count(./Grades/*) > 1]

산출

<Student>
    <Name>
        <First>Ashley</First>
        <Last>Smith</Last>
    </Name>
    <Grades>
        <Exam1>A</Exam1>
        <Exam2>B</Exam2>
        <Final>A</Final>
    </Grades>
</Student>

특정 하위 노드를 기반으로 노드 선택

샘플 XML

 <Students>
    <Student>
        <Name>
            <First>Ashley</First>
            <Last>Smith</Last>
        </Name>
        <Grades>
            <Exam1>A</Exam1>
            <Exam2>B</Exam2>
            <Final>A</Final>
        </Grades>
    </Student>
    <Student>
        <Name>
            <First>Bill</First>
            <Last>Edwards</Last>
        </Name>
        <Grades>
            <Exam1>A</Exam1>
        </Grades>
    </Student>    
</Students>

XPath

Exam2 점수가 기록 된 모든 학생을 선택하십시오.

//Student[./Grades/Exam2]

또는

//Student[.//Exam2]

산출

<Student>
    <Name>
        <First>Ashley</First>
        <Last>Smith</Last>
    </Name>
    <Grades>
        <Exam1>A</Exam1>
        <Exam2>B</Exam2>
        <Final>A</Final>
    </Grades>
</Student>