java - (Java)VTD-XML 和 Xpath 比较节点子元素

Question

我有两个 xml 文件。一种是引用(旧)文件，另一种是测试(新)文件。根据提供给我的一些规则，我必须检查是否从旧模型中删除了某些内容，然后将其添加到新模型中，或者检查旧文件中的某些内容是否在新文件中删除了。

我正在使用 VTD-XML，但 DOM 解决方案或任何其他与 xpath 一起使用的解决方案将非常有用。

这是java代码:

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)当 xpath 在 ref 文件上完成时，我得到了 man 节点的所有属性:

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

我得到了 name 属性的值。

2)然后我在测试文件上执行另一个 xpath 以获得公共(public)属性:

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

3)然后我就有了 if 语句

问题:没有 if 语句，我从引用和测试文件中获取所有属性应该有29000个。例如，当我尝试检查该节点(属性)是否具有称为强制的子节点时，我得到 2 个结果。不过应该还有很多，问题出在哪里？

引用文件:

<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>

测试文件:

<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>

所以当我运行我的代码时我应该得到:attr1 从 true 更改为 false

Answer 1

我找到了问题的解决方案:

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()*/);
        }

    }


}

我在循环中使用了另一个 XPath 来检查当前实体中是否是我正在查找的实体。