using System.Globalization;
using System.Configuration;
-namespace System.Data.Common {
+namespace System.Data.Common
+{
public class DbProviderFactoriesConfigurationHandler : IConfigurationSectionHandler
{
#region Constructors
- [MonoTODO]
public DbProviderFactoriesConfigurationHandler ()
{
}
#region Methods
- [MonoTODO]
public virtual object Create (object parent, object configContext, XmlNode section)
{
- DataSet ds = new DataSet ("DbProviderFactories");
- CreateDataTables (ds, section);
- return ds;
+ DataSet ds = parent as DataSet ?? CreateDataSet ();
+ FillDataTables (ds, section);
+ return ds;
}
- internal virtual void CreateDataTables (DataSet ds, XmlNode section)
- {
- DataTable dt = ds.Tables.Add ("DbProviderFactories");
- DataColumn [] columns = new DataColumn [5];
- columns [0] = new DataColumn ("Name", typeof (string));
- columns [1] = new DataColumn ("Description", typeof (string));
- columns [2] = new DataColumn ("InvariantName", typeof (string));
- columns [3] = new DataColumn ("AssemblyQualifiedName", typeof (string));
- columns [4] = new DataColumn ("SupportedClasses", typeof (int));
- dt.Columns.AddRange (columns);
- dt.PrimaryKey = new DataColumn [] {columns [2]};
-
- foreach (XmlNode node in section.SelectNodes (".//DbProviderFactories")) {
- AddRows (dt, node);
- RemoveRows (dt, node);
- }
- }
-
- internal string GetAttributeValue (XmlNode node, string name)
- {
- XmlAttribute attr = node.Attributes[name];
- if (attr == null)
- throw new ConfigurationException ("Required Attribute '" + name +
- "' is missing!", node);
- string value = attr.Value;
- if (value == "")
- throw new ConfigurationException ("Attribute '" + name + "' cannot be empty!",
- node);
- return value;
- }
-
- internal virtual void AddRows (DataTable dt, XmlNode factoriesNode)
- {
- foreach (XmlNode addNode in factoriesNode.SelectNodes (".//add")) {
- if (addNode.NodeType != XmlNodeType.Element)
- continue;
-
- string name = "";
- string description = "";
- string invariant = "";
- string type = "";
- string supportedClasses = "";
- int support;
-
- name = GetAttributeValue (addNode, "name");
- description = GetAttributeValue (addNode, "description");
- invariant = GetAttributeValue (addNode, "invariant");
- type = GetAttributeValue (addNode, "type");
- supportedClasses = GetAttributeValue (addNode, "support");
-
- support = int.Parse (supportedClasses, NumberStyles.HexNumber);
-
- DataRow row = dt.NewRow ();
- row [0] = name;
- row [1] = description;
- row [2] = invariant;
- row [3] = type;
- row [4] = support;
-
- dt.Rows.Add (row);
- }
- }
-
- internal virtual void RemoveRows (DataTable dt, XmlNode removeNode)
- {
- foreach (XmlNode node in removeNode.SelectNodes (".//remove")) {
- if (node.NodeType != XmlNodeType.Element)
- continue;
-
- string invariant = GetAttributeValue (node, "invariant");
- DataRow row = dt.Rows.Find (invariant);
- if (row != null)
- row.Delete ();
- }
- }
-
+ DataSet CreateDataSet ()
+ {
+ DataSet ds = new DataSet (DbProviderFactories.CONFIG_SECTION_NAME);
+ DataTable dt = ds.Tables.Add (DbProviderFactories.CONFIG_SEC_TABLE_NAME);
+ DataColumn [] columns = new DataColumn [4];
+ columns [0] = new DataColumn ("Name", typeof (string));
+ columns [1] = new DataColumn ("Description", typeof (string));
+ columns [2] = new DataColumn ("InvariantName", typeof (string));
+ columns [3] = new DataColumn ("AssemblyQualifiedName", typeof (string));
+ dt.Columns.AddRange (columns);
+ dt.PrimaryKey = new DataColumn [] { columns [2] };
+ return ds;
+ }
+
+ void FillDataTables (DataSet ds, XmlNode section)
+ {
+ DataTable dt = ds.Tables [0];
+ foreach (XmlNode node in section.ChildNodes) {
+ if (node.NodeType != XmlNodeType.Element)
+ continue;
+
+ if (node.Name == DbProviderFactories.CONFIG_SEC_TABLE_NAME) {
+ foreach (XmlNode factoryNode in node.ChildNodes) {
+ if (factoryNode.NodeType != XmlNodeType.Element)
+ continue;
+
+ switch (factoryNode.Name) {
+ case "add":
+ AddRow (dt, factoryNode);
+ break;
+ case "clear":
+ dt.Rows.Clear ();
+ break;
+ case "remove":
+ RemoveRow (dt, factoryNode);
+ break;
+ default:
+ throw new ConfigurationErrorsException (
+ "Unrecognized element.", factoryNode);
+ }
+ }
+ }
+ }
+ }
+
+ string GetAttributeValue (XmlNode node, string name, bool required)
+ {
+ XmlAttribute attr = node.Attributes [name];
+ if (attr == null) {
+ if (!required)
+ return null;
+ throw new ConfigurationErrorsException ("Required Attribute '"
+ + name + "' is missing!", node);
+ }
+ string value = attr.Value;
+ if (value == "")
+ throw new ConfigurationException ("Attribute '" + name
+ + "' cannot be empty!", node);
+ return value;
+ }
+
+ void AddRow (DataTable dt, XmlNode addNode)
+ {
+ string name = GetAttributeValue (addNode, "name", true);
+ string description = GetAttributeValue (addNode, "description", true);
+ string invariant = GetAttributeValue (addNode, "invariant", true);
+ string type = GetAttributeValue (addNode, "type", true);
+
+ // FIXME: throw ConfigurationErrorsException for unrecognized
+ // attributes. Consider "supports" valid although we're not using
+ // it
+
+ DataRow row = dt.NewRow ();
+ row [0] = name;
+ row [1] = description;
+ row [2] = invariant;
+ row [3] = type;
+
+ dt.Rows.Add (row);
+ }
+
+ void RemoveRow (DataTable dt, XmlNode removeNode)
+ {
+ // FIXME: throw ConfigurationErrorsException for unrecognized
+ // attributes.
+
+ string invariant = GetAttributeValue (removeNode, "invariant", true);
+ DataRow row = dt.Rows.Find (invariant);
+ if (row != null)
+ row.Delete ();
+ }
#endregion // Methods
}
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