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使用XmlAttributeOverrides更改對象樹中的元素名稱

[英]Using XmlAttributeOverrides to change element names in object tree

 原文  2013-12-16 17:15:00  2   1    c#/ .net/ xml/ xml-serialization/ xml-attribute

問題描述

我需要弄清楚如何使用從數據庫中檢索到的值作為我的元素名稱來重命名生成的XML中的元素和/或屬性。

例如，這是我當前流程的潛在XML輸出： 

<ArrayOfEntityTreeBase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <EntityTreeBase EntityInfo="User">
    <Children>
      <EntityTreeBase EntityInfo="User Medication">
        <Properties>
          <EntityProperty CreatedDate="2013-11-14T16:41:12.75">
            <FieldName>Medication Name</FieldName>
            <Value>Celebrex</Value>
          </EntityProperty>
          <EntityProperty CreatedDate="2013-12-04T14:08:58.597">
            <FieldName>Medication Dosage</FieldName>
            <Value>20000MG</Value>
          </EntityProperty>
          <EntityProperty CreatedDate="2013-11-14T16:41:12.76">
            <FieldName>Medication Prescribed Date</FieldName>
            <Value>08/01/2013</Value>
          </EntityProperty>
        </Properties>
      </EntityTreeBase>
      <EntityTreeBase EntityInfo="User Medication">
        <Properties>
          <EntityProperty CreatedDate="2013-11-14T16:41:12.767">
            <FieldName>Medication Name</FieldName>
            <Value>Aspirin</Value>
          </EntityProperty>
          <EntityProperty CreatedDate="2013-11-14T16:41:12.77">
            <FieldName>Medication Dosage</FieldName>
            <Value>5 mg</Value>
          </EntityProperty>
          <EntityProperty CreatedDate="2013-11-14T16:41:12.78">
            <FieldName>Medication Prescribed Date</FieldName>
            <Value>09/01/2013</Value>
          </EntityProperty>
        </Properties>
      </EntityTreeBase>
      <EntityTreeBase EntityInfo="User Medication">
        <Properties>
          <EntityProperty CreatedDate="2013-11-14T16:41:12.783">
            <FieldName>Medication Name</FieldName>
            <Value>Celebrex</Value>
          </EntityProperty>
          <EntityProperty CreatedDate="2013-11-14T16:41:12.793">
            <FieldName>Medication Dosage</FieldName>
            <Value>50 mg twice a day</Value>
          </EntityProperty>
          <EntityProperty CreatedDate="2013-11-14T16:41:12.8">
            <FieldName>Medication Prescribed Date</FieldName>
            <Value>10/01/2013</Value>
          </EntityProperty>
        </Properties>
      </EntityTreeBase>
    </Children>
    <Properties>
      <EntityProperty CreatedDate="2013-12-03T13:48:03.45">
        <FieldName>User First Name</FieldName>
        <Value>John</Value>
      </EntityProperty>
      <EntityProperty CreatedDate="2013-12-03T11:36:31.423">
        <FieldName>User MI</FieldName>
        <Value>Q</Value>
      </EntityProperty>
      <EntityProperty CreatedDate="2013-11-19T09:56:44.66">
        <FieldName>User Last Name</FieldName>
        <Value>Public</Value>
      </EntityProperty>
      <EntityProperty CreatedDate="2013-11-14T16:41:12.803">
        <FieldName>User SSN</FieldName>
        <Value>111-22-3333</Value>
      </EntityProperty>
    </Properties>
  </EntityTreeBase>
</ArrayOfEntityTreeBase>

我需要完成的是： 

<UserInformation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <User>
    <UserMedications>
      <UserMedication>
        <MedicationProperties>
          <MedicationProperty CreatedDate="2013-11-14T16:41:12.75">
            <FieldName>Medication Name</FieldName>
            <Value>Celebrex</Value>
          </MedicationProperty>
          <MedicationProperty CreatedDate="2013-12-04T14:08:58.597">
            <FieldName>Medication Dosage</FieldName>
            <Value>20000MG</Value>
          </MedicationProperty>
          <MedicationProperty CreatedDate="2013-11-14T16:41:12.76">
            <FieldName>Medication Prescribed Date</FieldName>
            <Value>08/01/2013</Value>
          </MedicationProperty>
        </MedicationProperties>
      </UserMedication>
      <UserMedication>
        <MedicationProperties>
          <MedicationProperty CreatedDate="2013-11-14T16:41:12.767">
            <FieldName>Medication Name</FieldName>
            <Value>Aspirin</Value>
          </MedicationProperty>
          <MedicationProperty CreatedDate="2013-11-14T16:41:12.77">
            <FieldName>Medication Dosage</FieldName>
            <Value>5 mg</Value>
          </MedicationProperty>
          <MedicationProperty CreatedDate="2013-11-14T16:41:12.78">
            <FieldName>Medication Prescribed Date</FieldName>
            <Value>09/01/2013</Value>
          </MedicationProperty>
        </MedicationProperties>
      </UserMedication>
      <UserMedication>
        <MedicationProperties>
          <MedicationProperty CreatedDate="2013-11-14T16:41:12.783">
            <FieldName>Medication Name</FieldName>
            <Value>Celebrex</Value>
          </MedicationProperty>
          <MedicationProperty CreatedDate="2013-11-14T16:41:12.793">
            <FieldName>Medication Dosage</FieldName>
            <Value>50 mg twice a day</Value>
          </MedicationProperty>
          <MedicationProperty CreatedDate="2013-11-14T16:41:12.8">
            <FieldName>Medication Prescribed Date</FieldName>
            <Value>10/01/2013</Value>
          </MedicationProperty>
        </MedicationProperties>
      </UserMedication>
    </UserMedications>
    <UserProperties>
      <UserProperty CreatedDate="2013-12-03T13:48:03.45">
        <FieldName>User First Name</FieldName>
        <Value>John</Value>
      </UserProperty>
      <UserProperty CreatedDate="2013-12-03T11:36:31.423">
        <FieldName>User MI</FieldName>
        <Value>Q</Value>
      </UserProperty>
      <UserProperty CreatedDate="2013-11-19T09:56:44.66">
        <FieldName>User Last Name</FieldName>
        <Value>Public</Value>
      </UserProperty>
      <UserProperty CreatedDate="2013-11-14T16:41:12.803">
        <FieldName>User SSN</FieldName>
        <Value>111-22-3333</Value>
      </UserProperty>
    </UserProperties>
  </User>
</UserInformation>

這是我的對象： 

public class EntityProperty
{
    [XmlIgnore]
    public int FieldId { get; set; }
    public string FieldName { get; set; }
    [XmlIgnore]
    public int FieldSortOrder { get; set; }
    [XmlAttribute()]
    public DateTime CreatedDate { get; set; }
    [XmlIgnore]
    public bool IsIterative { get; set; }
    public string Value { get; set; }
    public EntityTreeBase Entity { get; set; }
    public EntityProperty() { }
    public EntityProperty(int fieldId, string fieldName, int fieldSortOrder, DateTime createdDate, bool isIterative, string valueIn)
    {
        FieldId = fieldId;
        FieldName = FieldName;
        FieldSortOrder = fieldSortOrder;
        CreatedDate = createdDate;
        IsIterative = isIterative;
        Value = valueIn;
    }
}

public class EntityTreeBase
{
    [XmlIgnore]
    public long EntityId { get; set; }
    [XmlIgnore]
    public long? ParentEntityId { get; set; }
    [XmlIgnore]
    public int EntityDefinitionId { get; set; }
    [XmlIgnore]
    public int DestinationId { get; set; }
    [XmlIgnore]
    public int Level { get; set; }
    [XmlAttribute("EntityInfo")]
    public string EntityDefinitionName { get; set; }
    public EntityTreeBaseCollection Children { get; set; }
    public EntityPropertiesCollection Properties { get; set; }
    public EntityTreeBase() { }
    public EntityTreeBase(long entityId, long? parentEntityId, int entityDefinitionId, int destinationId, int level, string entityDefinitionName)
    {
        EntityId = entityId;
        ParentEntityId = parentEntityId;
        EntityDefinitionId = entityDefinitionId;
        DestinationId = destinationId;
        Level = level;
        EntityDefinitionName = entityDefinitionName;
    }
    public bool HasChildren
    {
        get { return (Children != null && Children.Count > 0); }
    }
    public bool HasProperties
    {
        get { return (Properties != null && Properties.Count > 0); }
    }
    public static EntityTreeBase BuildTree(EntityTreeBaseCollection collection, EntityTreeBase parent)
    {
        parent.Properties = EntityPropertiesCollection.GetProperties(parent.DestinationId, parent.EntityId, parent.EntityDefinitionId);
        parent.Children = new EntityTreeBaseCollection();
        foreach (EntityTreeBase item in EntityTreeBaseCollection.FindChildEntities(collection, parent.EntityId))
        {
            parent.Children.Add(BuildTree(EntityTreeBaseCollection.GetChildren(item.EntityId, item.Level, item.DestinationId), item));
        }
        if (!parent.HasChildren)
        {
            parent.Children = null;
        }
        if (!parent.HasProperties)
        {
            parent.Properties = null;
        }
        return parent;
    }
}

因此，很顯然，沒有名為“ Medication”或“ User”的對象類型，必須從數據中推斷出這些對象類型。 因此，我需要知道如何使用數據中的值來更改元素名稱，但是我需要弄清楚如何對對象樹進行爬網，以便根據關聯的EntityDefinitionName更改每個元素名稱。 我正在使用遞歸在序列化之前填充對象樹。 我知道以下代碼可以重命名XmlRoot： 

XmlAttributeOverrides xmlOverrides = new XmlAttributeOverrides();
XmlAttributes attribs = new XmlAttributes();
XmlRootAttribute rootAttr = new XmlRootAttribute();
rootAttr.ElementName = collection.Find(e => e.Level == 1).EntityDefinitionName.Replace(" ", "");
attribs.XmlRoot = rootAttr;

但是我需要弄清楚如何根據與該元素或節點關聯的EntityDefinitionName更改每個元素名稱。

提前致謝！

1 個解決方案

解決方案1
 0  2014-02-28 21:30:18

盡管我認為您可以通過使用自定義序列化來實現，但是我想提出一種不同的方法來使用XSLT樣式表解決您的問題。

此樣式表將您的輸入xml轉換為所需的輸出xml： 

<xsl:stylesheet version="1.0" 
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
                xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                xmlns:msxsl="urn:schemas-microsoft-com:xslt" 
                exclude-result-prefixes="msxsl">
    <xsl:output method="xml" indent="yes"/>

    <xsl:template match="ArrayOfEntityTreeBase">
       <UserInformation >
        <xsl:apply-templates />
       </UserInformation>
    </xsl:template>

  <xsl:template match="EntityTreeBase[@EntityInfo='User']">
    <User>
      <xsl:apply-templates />
    </User>
  </xsl:template>

  <xsl:template match="Children">
    <UserMedications>
      <xsl:apply-templates />
    </UserMedications>
  </xsl:template>

  <xsl:template match="EntityTreeBase[@EntityInfo='User Medication']">
    <UserMedication>
      <xsl:apply-templates />
    </UserMedication>
  </xsl:template>

  <xsl:template match="EntityTreeBase[@EntityInfo='User Medication']/Properties">
    <MedicationProperties>
      <xsl:apply-templates />
    </MedicationProperties>
  </xsl:template>

  <xsl:template match="EntityTreeBase[@EntityInfo='User']/Properties">
    <UserProperties>
      <xsl:apply-templates/>
    </UserProperties>
  </xsl:template>

  <xsl:template match="EntityTreeBase[@EntityInfo='User']/Properties/EntityProperty">
    <xsl:element name="UserProperty">
      <xsl:copy-of select="@*"/>
      <xsl:copy-of select="*" />
    </xsl:element>
  </xsl:template>

  <xsl:template match="EntityTreeBase[@EntityInfo='User Medication']/Properties/EntityProperty">
    <xsl:element name="MedicationProperty">
      <xsl:copy-of select="@*"/>
       <xsl:copy-of select="*" />
    </xsl:element>
  </xsl:template>

</xsl:stylesheet>

這是您可以在c＃代碼中使用運行轉換的代碼： 

 var xml = File.Open("input.xml", FileMode.Open); // or any stream
 var xslTrans = new XslCompiledTransform();
 xslTrans.Load(XmlReader.Create(File.Open("yourxslfile.xlst", FileMode.Open)));
 var output = File.Create("output.xml");  // or a stream
 var xw = XmlWriter.Create(output);
 xslTrans.Transform(XmlReader.Create(xml), xw );
 xw.Close();

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