XML中的不同值
请问有人可以帮助xpath与众不同吗？我正在尝试进行一些查询，以返回一年后出生的，在一部电影或一部电视节目中获得的奖项数量多于其他演员的人数。
所以首先我选择所有演员，他们的出生年份高于year参数，然后我使用count来计数他们的奖项。但是现在我的名字重复了，如何区分结果？
我的代码：
public int Query6(XmlDocument xmlDoc, String yearOfBirth, int amountOfAwards)
{
string s = "//actors/actor[year-of-birth>'" + yearOfBirth + "'][count(awards/award)>"+amountOfAwards+"]";
XmlNodeList xmlNodeList = xmlDoc.SelectNodes(s);
return xmlNodeList.Count;
}
XMLDoc：
<?xml version="1.0"?>
<Netflix>
<movies>
<movie>
<name>Mister Glass</name>
<genre>Drama</genre>
<year>2019</year>
<actors>
<actor>
<first-name>James</first-name>
<last-name>McAvoy</last-name>
<year-of-birth>1979 </year-of-birth>
<awards>
<award>
<category>Alliance of Women Film Journalists</category>
<year>2007</year>
</award>
<award>
<category>ALOS Awards</category>
<year>2018</year>
</award>
</awards>
</actor>
<actor>
<first-name>Bruce</first-name>
<last-name>Willis</last-name>
<year-of-birth>1955 </year-of-birth>
<awards>
<award>
<category>American gun rights advocates</category>
<year>2007</year>
</award>
<award>
<category>American film producers</category>
<year>2013</year>
</award>
<award>
<category>American male video game actors</category>
<year>2012</year>
</award>
<award>
<category>American male television actors</category>
<year>2013</year>
</award>
</awards>
</actor>
</actors>
</movie>
<movie>
<name>Aquaman</name>
<genre>Action</genre>
<year>2018</year>
<actors>
<actor>
<first-name>Jason</first-name>
<last-name>Momoa</last-name>
<year-of-birth>1979</year-of-birth>
<awards>
<award>
<category>Rising Star</category>
<year>2011</year>
</award>
</awards>
</actor>
<actor>
<first-name>Amber</first-name>
<last-name>Heard</last-name>
<year-of-birth>1986</year-of-birth>
<awards>
<award>
<category>Dallas Star Award</category>
<year>2010</year>
</award>
<award>
<category>Spotlight Award</category>
<year>2011</year>
</award>
</awards>
</actor>
</actors>
</movie>
<movie>
<name>Split</name>
<genre>Horror</genre>
<year>2016</year>
<actors>
<actor>
<first-name>James</first-name>
<last-name>McAvoy</last-name>
<year-of-birth>1979 </year-of-birth>
<awards>
<award>
<category>Best Actor - Audience Award</category>
<year>2017</year>
</award>
</awards>
</actor>
</actors>
</movie>
<movie>
<name>harry potter</name>
<genere>fantasy</genere>
<year>1997</year>
<actors>
<actor>
<first-name>Daniel</first-name>
<last-name>Radcliffe</last-name>
<year-of-birth>1989</year-of-birth>
<awards>
<award>
<category>Male Youth Discovery of the Year</category>
<year>2001</year>
</award>
<award>
<category>Choice Movie: Male Breakout Star</category>
<year>2001</year>
</award>
<award>
<category>Best Actor</category>
<year>2008</year>
</award>
</awards>
</actor>
<actor>
<first-name>emma</first-name>
<last-name>watson</last-name>
<year-of-birth>1990</year-of-birth>
</actor>
<actor>
<first-name>Alba</first-name>
<last-name>Florez</last-name>
<year-of-birth>1986</year-of-birth>
<awards>
<award>
<category>Best Female Performer in Fiction</category>
<year>2000</year>
</award>
</awards>
</actor>
</actors>
</movie>
<movie>
<name>Miss Bala </name>
<genre>Action</genre>
<year>2019</year>
<actors>
<actor>
<first-name>Gina</first-name>
<last-name>Rodriguez</last-name>
<year-of-birth>1984</year-of-birth>
</actor>
<actor>
<first-name>Thomas</first-name>
<last-name>Dekker</last-name>
<year-of-birth>1987</year-of-birth>
</actor>
</actors>
</movie>
<movie>
<name>The Dark Knight</name>
<genre>Action</genre>
<year>2008</year>
<actors>
<actor>
<first-name>Christian</first-name>
<last-name>Bale</last-name>
<year-of-birth>1974</year-of-birth>
<awards>
<award>
<category>Best Actor</category>
<year>2013</year>
</award>
<award>
<category>Best Cast Ensemble</category>
<year>2008</year>
</award>
</awards>
</actor>
</actors>
</movie>
<movie>
<name>Forrest Gump</name>
<genre>Drama</genre>
<year>1994</year>
<actors>
<actor>
<first-name>Tom</first-name>
<last-name>Hanks</last-name>
<year-of-birth>1956</year-of-birth>
<awards>
<award>
<category>Best Actor in a Leading Role</category>
<year>1994</year>
</award>
<award>
<category>Best Performance by an Actor in a Motion Picture - Drama</category>
<year>1995</year>
</award>
</awards>
</actor>
<actor>
<first-name>Robin</first-name>
<last-name>Wright</last-name>
<year-of-birth>1966</year-of-birth>
<awards>
<award>
<category>Best Performance by an Actress in a Supporting Role in a Motion Picture</category>
<year>1994</year>
</award>
</awards>
</actor>
</actors>
</movie>
<movie>
<name>Star Wars</name>
<genre>Action</genre>
<year>1977</year>
<actors>
<actor>
<first-name>Harrison</first-name>
<last-name>Ford</last-name>
<year-of-birth>1942</year-of-birth>
<awards>
<award>
<category>Best Actor</category>
<year>1997</year>
</award>
</awards>
</actor>
<actor>
<first-name>Mark</first-name>
<last-name>Hamill</last-name>
<year-of-birth>1951</year-of-birth>
</actor>
</actors>
</movie>
<movie>
<name>Gladiator</name>
<genre>Action</genre>
<year>2000</year>
<actors>
<actor>
<first-name>Russell</first-name>
<last-name>Crowe</last-name>
<year-of-birth>1964</year-of-birth>
<awards>
<award>
<category>Best Actor in a Leading Role</category>
<year>2000</year>
</award>
<award>
<category>Best Performance by an Actor in a Motion Picture - Drama</category>
<year>2000</year>
</award>
</awards>
</actor>
<actor>
<first-name>Joaquin</first-name>
<last-name>Phoenix</last-name>
<year-of-birth>1974</year-of-birth>
<awards>
<award>
<category>Best Actor in a Supporting Role</category>
<year>2000</year>
</award>
<award>
<category>Best Performance by an Actor in a Supporting Role in a Motion Picture</category>
<year>2000</year>
</award>
</awards>
</actor>
</actors>
</movie>
<movie>
<name>Ted</name>
<genre>Comedy</genre>
<year>2015</year>
<actors>
<actor>
<first-name>Mila</first-name>
<last-name>Kunis</last-name>
<year-of-birth>1983</year-of-birth>
<awards>
<award>
<category>Young Artist Awards</category>
<year>2001</year>
</award>
<award>
<category>Teen Choice Awards</category>
<year>2010</year>
</award>
</awards>
</actor>
</actors>
</movie>
</movies>
<TV-shows>
<TV-show>
<name>Narcos</name>
<genre>Crime</genre>
<year>2015</year>
<seasons>
<season>
<episodes>10</episodes>
</season>
<season>
<episodes>10</episodes>
</season>
<season>
<episodes>10</episodes>
</season>
</seasons>
<actors>
<actor>
<first-name>Wagner</first-name>
<last-name>Maniçoba de Moura</last-name>
<year-of-birth>1976</year-of-birth>
</actor>
<actor>
<first-name>Pedro</first-name>
<last-name>Pascal</last-name>
<year-of-birth>1975</year-of-birth>
</actor>
<actor>
<first-name>James</first-name>
<last-name>Clarke</last-name>
<year-of-birth>1986</year-of-birth>
<awards>
<award>
<category>Outstanding Female Rising Star in a Drama Series or Special</category>
<year>2012</year>
</award>
</awards>
</actor>
<actor>
<first-name>Daniel</first-name>
<last-name>Radcliffe</last-name>
<year-of-birth>1989</year-of-birth>
<awards>
<award>
<category>Male Youth Discovery of the Year</category>
<year>2001</year>
</award>
<award>
<category>Choice Movie: Male Breakout Star</category>
<year>2001</year>
</award>
<award>
<category>Best Actor</category>
<year>2008</year>
</award>
</awards>
</actor>
</actors>
</TV-show>
<TV-show>
<name>Game of Thrones</name>
<genre>Action</genre>
<year>2011</year>
<seasons>
<season>
<episodes>10</episodes>
</season>
<season>
<episodes>10</episodes>
</season>
<season>
<episodes>10</episodes>
</season>
<season>
<episodes>10</episodes>
</season>
<season>
<episodes>10</episodes>
</season>
<season>
<episodes>10</episodes>
</season>
<season>
<episodes>7</episodes>
</season>
</seasons>
<actors>
<actor>
<first-name>Emilia</first-name>
<last-name>Clarke</last-name>
<year-of-birth>1986</year-of-birth>
<awards>
<award>
<category>Outstanding Female Rising Star in a Drama Series or Special</category>
<year>2012</year>
</award>
<award>
<category>Best Supporting Actress in a Drama Series</category>
<year>2013</year>
</award>
<award>
<category>Breakout Performance - Female</category>
<year>2011</year>
</award>
</awards>
</actor>
<actor>
<first-name>Peter</first-name>
<last-name>Dinklage</last-name>
<year-of-birth>1969</year-of-birth>
<awards>
<award>
<category>Outstanding Supporting Actor in a Drama Series</category>
<year>2018</year>
</award>
</awards>
</actor>
</actors>
</TV-show>
<TV-show>
<name>The Sopranos</name>
<genre>Crime</genre>
<year>1999</year>
<seasons>
<season>
<episodes>13</episodes>
</season>
<season>
<episodes>13</episodes>
</season>
<season>
<episodes>13</episodes>
</season>
<season>
<episodes>13</episodes>
</season>
<season>
<episodes>13</episodes>
</season>
<season>
<episodes>21</episodes>
</season>
</seasons>
<actors>
<actor>
<first-name>James</first-name>
<last-name>Gandolfini</last-name>
<year-of-birth>1961</year-of-birth>
<awards>
<award>
<category>Best Performance by an Actor in a Television Series - Drama</category>
<year>2000</year>
</award>
<award>
<category>Outstanding Lead Actor in a Drama Series</category>
<year>2003</year>
</award>
</awards>
</actor>
<actor>
<first-name>Lorraine</first-name>
<last-name>Bracco</last-name>
<year-of-birth>1954</year-of-birth>
<awards>
<award>
<category>Outstanding Performance by an Ensemble in a Drama Series</category>
<year>2008</year>
</award>
</awards>
</actor>
</actors>
</TV-show>
<TV-show>
<name>Black Mirror</name>
<genre>Drama</genre>
<year>2011</year>
<seasons>
<season>
<episodes>3</episodes>
</season>
<season>
<episodes>3</episodes>
</season>
<season>
<episodes>6</episodes>
</season>
<season>
<episodes>6</episodes>
</season>
</seasons>
<actors>
<actor>
<first-name>Daniel</first-name>
<last-name>Lapaine</last-name>
<year-of-birth>1971</year-of-birth>
</actor>
</actors>
</TV-show>
<TV-show>
<name>Westworld</name>
<genre>Drama</genre>
<year>2016</year>
<seasons>
<season>
<episodes>10</episodes>
</season>
<season>
<episodes>10</episodes>
</season>
</seasons>
<actors>
<actor>
<first-name>Jeffrey</first-name>
<last-name>Wright</last-name>
<year-of-birth>1965</year-of-birth>
<awards>
<award>
<category>Best TV Actor</category>
<year>2016</year>
</award>
</awards>
</actor>
<actor>
<first-name>Ed</first-name>
<last-name>Harris</last-name>
<year-of-birth>1950</year-of-birth>
<awards>
<award>
<category>Best Supporting Actor on Television</category>
<year>2017</year>
</award>
</awards>
</actor>
</actors>
</TV-show>
<TV-show>
<name>Big Little Lies</name>
<genre>Crime</genre>
<year>2017</year>
<seasons>
<season>
<episodes>7</episodes>
</season>
</seasons>
<actors>
<actor>
<first-name>Reese</first-name>
<last-name>Witherspoon</last-name>
<year-of-birth>1976</year-of-birth>
<awards>
<award>
<category>Outstanding Limited Series</category>
<year>2017</year>
</award>
</awards>
</actor>
<actor>
<first-name>Nicole</first-name>
<last-name>Kidman</last-name>
<year-of-birth>1967</year-of-birth>
<awards>
<award>
<category>Best Performance by an Actress in a Limited Series or a Motion Picture Made for Television</category>
<year>2018</year>
</award>
<award>
<category>Outstanding Lead Actress in a Limited Series or Movie</category>
<year>2017</year>
</award>
</awards>
</actor>
</actors>
</TV-show>
<TV-show>
<name>The Night Of</name>
<genre>Crime</genre>
<year>2016</year>
<seasons>
<season>
<episodes>8</episodes>
</season>
</seasons>
<actors>
<actor>
<first-name>Riz</first-name>
<last-name>Ahmed</last-name>
<year-of-birth>1982</year-of-birth>
<awards>
<award>
<category>Outstanding Lead Actor in a Limited Series or Movie</category>
<year>2017</year>
</award>
</awards>
</actor>
<actor>
<first-name>John</first-name>
<last-name>Turturro</last-name>
<year-of-birth>1957</year-of-birth>
</actor>
</actors>
</TV-show>
<TV-show>
<name>Mr. Bean</name>
<genre>Comedy</genre>
<year>1990</year>
<seasons>
<season>
<episodes>15</episodes>
</season>
</seasons>
<actors>
<actor>
<first-name>Rowan</first-name>
<last-name>Atkinson</last-name>
<year-of-birth>1955</year-of-birth>
</actor>
</actors>
</TV-show>
<TV-show>
<name>The Handmaid's Tale</name>
<genre>Drama</genre>
<year>2017</year>
<seasons>
<season>
<episodes>10</episodes>
</season>
<season>
<episodes>13</episodes>
</season>
</seasons>
<actors>
<actor>
<first-name>Elisabeth</first-name>
<last-name>Moss </last-name>
<year-of-birth>1982</year-of-birth>
<awards>
<award>
<category>Best Performance by an Actress in a Television Series - Drama</category>
<year>2018</year>
</award>
<award>
<category>Outstanding Drama Series</category>
<year>2017</year>
</award>
</awards>
</actor>
<actor>
<first-name>Max</first-name>
<last-name>Minghella</last-name>
<year-of-birth>1985</year-of-birth>
</actor>
</actors>
</TV-show>
<TV-show>
<name>Casa De Papel</name>
<genre>Drama</genre>
<year>2017</year>
<seasons>
<season>
<episodes>13</episodes>
</season>
<season>
<episodes>9</episodes>
</season>
</seasons>
<actors>
<actor>
<first-name>Alba</first-name>
<last-name>Florez</last-name>
<year-of-birth>1986</year-of-birth>
<awards>
<award>
<category>Best Supporting Actress in a Television Series </category>
<year>2015</year>
</award>
</awards>
</actor>
<actor>
<first-name>Álvaro</first-name>
<last-name>Morte</last-name>
<year-of-birth>1975</year-of-birth>
</actor>
</actors>
</TV-show>
</TV-shows>
</Netflix>
例如，如果我选择1980年和3个奖项，那么在我的结果中，“丹尼尔·雷德克里夫”将计数两次，而我只希望他1。
我正在用C＃写作。
4 个答案:
答案 0 :(得分：1)
您可以执行以下操作。
var result = xDocument.Descendants("actor")
.Where(x=>x.Descendants("award").Any()) // You can skip this is if you want to consider Actors who haven't won any award
.Select(x=>new
{
Actor=$"{x.Element("first-name").Value} {x.Element("last-name").Value}",
YearOfBirth = Int32.Parse(x.Element("year-of-birth").Value),
AwardCount = x.Descendants("award").Count()
})
.GroupBy(x=>x.Actor)
.Where(x=>x.First().YearOfBirth>Int32.Parse(yearOfBirth) && x.Sum(c=>c.AwardCount)>amountOfAwards)
.Select(x=> new
{
Actor = x.Key,
YearOfBirth = x.First().YearOfBirth,
Awards = x.Sum(c=>c.AwardCount)
});
产出（1980年，amountOfAwards 3）
答案 1 :(得分：1)
在XPath 1.0中很难做到这一点，但是在XPath 2.0中很容易做到。与.NET捆绑在一起的Microsoft XPath引擎不支持XPath 2.0，但是第三方（例如Saxon）也可以这样做。
我不确定您要输出的是什么，但是如果您执行查询以选择一组actor元素（假设结果在$ selectedActors中），则可以得到不同的名称那些使用
distinct-values($selectedActors/concat(first-name, ' ', last-name))
从1.0开始，XPath已经走了很长一段路。不幸的是，Microsoft从未实现过更高版本：他们希望您使用自己的专有技术（LINQ）。从第三方迁移到LINQ还是从更高版本的XPath引擎取决于您对Microsoft锁定的态度。
答案 2 :(得分：0)
我不认为XQuery能够满足您的需求，因为您有多个具有相同角色的条目。这意味着您需要汇总各个元素，以获取演员的总奖金。
以下是使用Linq达到相同结果的解决方案：
public class Actor
{
public string Name { get; set; }
public int Awards { get; set; }
public int BirthYear { get; set; }
public override int GetHashCode() => 0;
public override bool Equals(object obj) =>(obj as Actor)?.Name.Equals(this.Name) ?? base.Equals(obj);
}
public IEnumerable<Actor> GetActorsAndAwards(XDocument xml)
{
foreach (var actor in xml.XPathSelectElements(@"//actors/actor"))
{
yield return new Actor
{
Name = $"{actor.Element("first-name").Value}, {actor.Element("last-name").Value}",
Awards = actor.XPathSelectElements(@"awards/award").Count(),
BirthYear = int.Parse(actor.Element("year-of-birth").Value)
};
};
}
public IEnumerable<Actor> AggregateAndFilter(IEnumerable<Actor> actors, int yearOfBirth, int amountOfAwards)
=> actors
.GroupBy(x => x.Name)
.Select(x => new Actor { Name = x.Key, BirthYear = x.First().BirthYear, Awards = x.Sum(y => y.Awards) })
.Where(x => x.BirthYear > yearOfBirth && x.Awards > amountOfAwards)
;
void Main()
{
var xml = XDocument.Load(@"D:\Temp\0\netflix.xml");
AggregateAndFilter(GetActorsAndAwards(xml), 1970, 2).Count().Dump(); //Dump is LinqPad tool, do whatever you want with the result
}
答案 3 :(得分：0)
如果您确实需要XPath 1.0解决方案，则可以使用此查询来获取具有唯一姓氏的所有参与者：
/Netflix/*/*/actors/actor[not(last-name = preceding::actor/last-name)
当然，这意味着Jeffrey Wright和Robin Wright不会被视为独特的演员。您可以添加更多类似的条件：
/Netflix/*/*/actors/actor[not(last-name = preceding::actor/last-name) or not(first-name = preceding::actor/first-name) or not(year-of-birth = preceding::actor/year-of-birth)]，在这种情况下，如果记录具有唯一的姓氏，唯一的名字或出生年份，则该记录将被视为唯一。但这显然不防水！仅当您可以为每个角色添加唯一的ID时，这才成为有效的解决方案。没有它，我认为实际上不可能在纯XPath 1.0中做到这一点。
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