XMLノードを複数の基準で並べ替えます

Question

私は日付で次のXMLを主な基準としてソートしようとしています。

私はそれを最初に価格に基づいてソートし、日付でソートすることで十分だと思いました。私は書籍bk108が最高価格で最新であるために最初に終わると予想しましたが、最初の本はbk108の値下げでもbkXXXです。

$xml = [xml]@' 
<?xml version="1.0"?> 
<catalog> 
    <book id="bk101"> 
     <author>Gambardella, Matthew</author> 
     <title>XML Developer's Guide</title> 
     <genre>Computer</genre> 
     <price>44.95</price> 
     <publish_date>2000-10-01</publish_date> 
     <description>An in-depth look at creating applications 
     with XML.</description> 
    </book> 
    <book id="bk102"> 
     <author>Ralls, Kim</author> 
     <title>Midnight Rain</title> 
     <genre>Fantasy</genre> 
     <price>5.95</price> 
     <publish_date>2000-12-16</publish_date> 
     <description>A former architect battles corporate zombies, 
     an evil sorceress, and her own childhood to become queen 
     of the world.</description> 
    </book> 
    <book id="bk103"> 
     <author>Corets, Eva</author> 
     <title>Maeve Ascendant</title> 
     <genre>Fantasy</genre> 
     <price>5.95</price> 
     <publish_date>2000-11-17</publish_date> 
     <description>After the collapse of a nanotechnology 
     society in England, the young survivors lay the 
     foundation for a new society.</description> 
    </book> 
    <book id="bk104"> 
     <author>Corets, Eva</author> 
     <title>Oberon's Legacy</title> 
     <genre>Fantasy</genre> 
     <price>5.95</price> 
     <publish_date>2001-03-10</publish_date> 
     <description>In post-apocalypse England, the mysterious 
     agent known only as Oberon helps to create a new life 
     for the inhabitants of London. Sequel to Maeve 
     Ascendant.</description> 
    </book> 
    <book id="bk105"> 
     <author>Corets, Eva</author> 
     <title>The Sundered Grail</title> 
     <genre>Fantasy</genre> 
     <price>5.95</price> 
     <publish_date>2001-09-10</publish_date> 
     <description>The two daughters of Maeve, half-sisters, 
     battle one another for control of England. Sequel to 
     Oberon's Legacy.</description> 
    </book> 
    <book id="bk106"> 
     <author>Randall, Cynthia</author> 
     <title>Lover Birds</title> 
     <genre>Romance</genre> 
     <price>1000</price> 
     <publish_date>2000-09-02</publish_date> 
     <description>When Carla meets Paul at an ornithology 
     conference, tempers fly as feathers get ruffled.</description> 
    </book> 
    <book id="bk107"> 
     <author>Thurman, Paula</author> 
     <title>Splish Splash</title> 
     <genre>Romance</genre> 
     <price>1000</price> 
     <publish_date>2000-10-02</publish_date> 
     <description>A deep sea diver finds true love twenty 
     thousand leagues beneath the sea.</description> 
    </book> 
    <book id="bk108"> 
     <author>Knorr, Stefan</author> 
     <title>Creepy Crawlies</title> 
     <genre>Horror</genre> 
     <price>999</price> 
     <publish_date>2001-12-06</publish_date> 
     <description>An anthology of horror stories about roaches, 
     centipedes, scorpions and other insects.</description> 
    </book> 
    <book id="bkXXX"> 
     <author>new auth</author> 
     <title>some title</title> 
     <genre>Horror</genre> 
     <price>998</price> 
     <publish_date>2001-12-06</publish_date> 
     <description>would go here</description> 
    </book> 
    <book id="bk113"> 
     <author>Knorr, Stefan</author> 
     <title>Creepy Crawlies</title> 
     <genre>Horror</genre> 
     <price>999</price> 
     <publish_date>2000-12-06</publish_date> 
     <description>An anthology of horror stories about roaches, 
     centipedes, scorpions and other insects.</description> 
    </book> 
    <book id="bk109"> 
     <author>Kress, Peter</author> 
     <title>Paradox Lost</title> 
     <genre>Science Fiction</genre> 
     <price>6.95</price> 
     <publish_date>2000-11-02</publish_date> 
     <description>After an inadvertant trip through a Heisenberg 
     Uncertainty Device, James Salway discovers the problems 
     of being quantum.</description> 
    </book> 
</catalog> 
'@ 

[System.Xml.XmlNode]$orig = $xml.catalog 
$orig.book | sort { [double] $_.price} | 
    foreach { [void]$xml.catalog.PrependChild($_) } 
$xml.catalog.book 

[System.Xml.XmlNode]$orig = $xml.catalog 
$orig.book | sort { [DateTime] $_.publish_date} | 
    foreach { [void]$xml.catalog.PrependChild($_) } 
$xml.catalog.book 

$xml.Save('c:\work\foo.xml') 

これはこれで[System.Xml.XmlNode]$orig = $xml.catalog後、あなたのコードを置き換えpowershell xml sort nodes and replacechild

Answer 1

私の出発点だった：

[xml]$sortedXml = @" 
    <catalog> 
     $(($orig.book | sort-object -Property {[double] $_.price},{[datetime]$_.publish_date} -descending).OuterXml) 
    </catalog> 
"@