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(Java)VTD-XML和Xpath編譯節點子元素

[英](Java)VTD-XML & Xpath Compering Nodes Children Elements

我有兩個xml文件。 一個是參考(舊)文件,另一個是測試(新)文件。 根據提供給我的一些規則,我必須檢查是否從舊模型中刪除了某些內容,然后將其添加到新模型中,或者檢查了舊文件中的某些內容是否已在新文件中刪除了。

我正在使用VTD-XML,但是DOM解決方案或任何其他與xpath一起使用的解決方案將非常有用。

那是java代碼:

public void validateBooleanVTD2(PropertyRule prop, int i) throws XPathParseException, XPathEvalException,
        NavException {
    int n = -1;
    String xPath = prop.getEntitiesObjects().get(i).getxPath(); // eg. /people/man/attribute[not(key)]
    String propertyChecked = prop.getTag(); // eg. mandatory 
    VTDGen parseRef = new VTDGen();
    VTDGen parseTest = new VTDGen();
    parseRef.parseFile(ref, false);
    parseTest.parseFile(test, false);
    VTDNav navigateRef = parseRef.getNav();
    VTDNav navigateTest = parseTest.getNav();
    AutoPilot autopilotRef = new AutoPilot();
    AutoPilot autopilotTest = new AutoPilot();
    autopilotRef.bind(navigateRef);
    autopilotTest.bind(navigateTest);
    autopilotRef.selectXPath(xPath);
    //Instant start = Instant.now();

    while ((n = autopilotRef.evalXPath()) != -1) {
        int nameIndexRef = navigateRef.getAttrVal("name");
        String nameRef = navigateRef.toNormalizedString(nameIndexRef);
        autopilotTest.selectXPath(xPath + "[@name='" + nameRef + "']"); // eg. /people/man/attribute[not(key)][@name='John']
        int m = -1;
        while ((m = autopilotTest.evalXPath()) != -1) {

            if (navigateRef.toElement(VTDNav.FIRST_CHILD, propertyChecked) == false
                    && navigateTest.toElement(VTDNav.FIRST_CHILD, propertyChecked) == true) {// if it is in ref but not in test 

                System.out.println(nameRef + ":" + propertyChecked + ":Changed false to true");

                navigateRef.toElement(VTDNav.PARENT);
                navigateTest.toElement(VTDNav.PARENT);

            }

            else if (navigateRef.toElement(VTDNav.FIRST_CHILD, propertyChecked) == true
                    && navigateTest.toElement(VTDNav.FIRST_CHILD, propertyChecked) == false) { // if it is in test but not in ref
                System.out.println(nameRef + ":" + propertyChecked + ":Changed true to false");

                navigateRef.toElement(VTDNav.PARENT);
                navigateTest.toElement(VTDNav.PARENT);

            }

        }
        navigateTest.toElement(VTDNav.PARENT);
    }
    navigateRef.toElement(VTDNav.PARENT);

}

1)當在引用文件上完成xpath時,我得到了man節點的所有屬性:

/people/man/attribute[not(key)]

我得到名稱屬性的值。

2)然后我在測試文件上執行另一個xpath以獲得通用屬性:

/people/man/attribute[not(key)][@name='attr1']

3)然后我有if語句

問題:如果沒有if語句,我將從ref和測試文件中獲取所有屬性,應該有29000個屬性。 例如,當我嘗試檢查該節點(屬性)是否具有稱為強制性的子節點時,我得到了2個結果。 但是問題出在哪里呢?

參考文件:

<people>
<man name="John">
    <attribute name="attr1">
    </mandatory>
    </attribute>
    <attribute name="attr2">
    </attribute>
</man>
<man name="Hans">
    <attribute name="attr3">
    </attribute>
</man>
<man name="Max">
    <attribute name="attr4">
    </attribute>
</man>

測試文件:

<people>
<man name="John">
    <attribute name="attr1">

    </attribute>
    <attribute name="attr2">
    </attribute>
</man>
<man name="Hans">
    <attribute name="attr3">
    </attribute>
</man>
<man name="Max">
    <attribute name="attr4">
    </attribute>
</man>

因此,當我運行代碼時,我應該得到:attr1從true更改為false

我找到了解決問題的方法:

public void validateBooleanVTD2(PropertyRule prop, int i) throws XPathParseException, XPathEvalException,
        NavException {
    int n = -1;
    String xPath = prop.getEntitiesObjects().get(i).getxPath(); // eg. /people/man/attribute[not(key)]
    String propertyChecked = prop.getTag(); // eg. mandatory 
    VTDGen parseRef = new VTDGen();
    VTDGen parseTest = new VTDGen();
    parseRef.parseFile(ref, false);
    parseTest.parseFile(test, false);
    VTDNav navigateRef = parseRef.getNav();
    VTDNav navigateTest = parseTest.getNav();
    AutoPilot autopilotRef = new AutoPilot();
    AutoPilot autopilotTest = new AutoPilot();
    autopilotRef.bind(navigateRef);
    autopilotTest.bind(navigateTest);
    autopilotRef.selectXPath(xPath);
    //Instant start = Instant.now();

    while ((n = autopilotRef.evalXPath()) != -1) {
        int nameIndexRef = navigateRef.getAttrVal("name");
        String nameRef = navigateRef.toNormalizedString(nameIndexRef);
        //System.out.println(navigateTest.toString(n + 2));
        //System.out.println(navigateTest.toString(n + 1));
        AutoPilot autopilotRefTestTag = new AutoPilot();
        AutoPilot autopilotTestTestTag = new AutoPilot();
        autopilotRefTestTag.bind(navigateRef);
        autopilotTestTestTag.bind(navigateTest);
        autopilotTestTestTag.selectXPath(xPath + "[@name='" + nameRef + "'][descendant::"+propertyChecked+"]"); // property in Test
        autopilotRefTestTag.selectXPath(xPath + "[@name='" + nameRef + "'][descendant::"+propertyChecked+"]"); // property in Ref
        if(autopilotRefTestTag.evalXPathToBoolean() == true && autopilotTestTestTag.evalXPathToBoolean() == false)
        {
            System.out.println(nameRef/* +":"+navigateRef.toString(n)+":"+propertyChecked + ":Updated:"+prop.getTrue2falseValue()+":Changed From True to False:"+prop.getTrue2falseDesc()*/);
        }
        if(autopilotRefTestTag.evalXPathToBoolean() == false && autopilotTestTestTag.evalXPathToBoolean() == true)
        {
            System.out.println(nameRef/* +":"+navigateRef.toString(n)+":"+propertyChecked + ":Updated:"+prop.getFalse2trueValue()+":Changed From False to True:"+prop.getFalse2trueDesc()*/);
        }

    }


}

我在循環中使用了另一個XPath來檢查當前Entity中是否是我要尋找的實體。

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