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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.Runtime.Serialization
{
using System;
using System.Xml;
using System.Xml.Schema;
using System.Collections;
using System.Collections.Generic;
using SchemaObjectDictionary = System.Collections.Generic.Dictionary<System.Xml.XmlQualifiedName, SchemaObjectInfo>;
internal class SchemaObjectInfo
{
internal XmlSchemaType type;
internal XmlSchemaElement element;
internal XmlSchema schema;
internal List<XmlSchemaType> knownTypes;
internal SchemaObjectInfo(XmlSchemaType type, XmlSchemaElement element, XmlSchema schema, List<XmlSchemaType> knownTypes)
{
this.type = type;
this.element = element;
this.schema = schema;
this.knownTypes = knownTypes;
}
}
internal static class SchemaHelper
{
internal static bool NamespacesEqual(string ns1, string ns2)
{
if (ns1 == null || ns1.Length == 0)
return (ns2 == null || ns2.Length == 0);
else
return ns1 == ns2;
}
internal static XmlSchemaType GetSchemaType(XmlSchemaSet schemas, XmlQualifiedName typeQName, out XmlSchema outSchema)
{
outSchema = null;
ICollection currentSchemas = schemas.Schemas();
string ns = typeQName.Namespace;
foreach (XmlSchema schema in currentSchemas)
{
if (NamespacesEqual(ns, schema.TargetNamespace))
{
outSchema = schema;
foreach (XmlSchemaObject schemaObj in schema.Items)
{
XmlSchemaType schemaType = schemaObj as XmlSchemaType;
if (schemaType != null && schemaType.Name == typeQName.Name)
{
return schemaType;
}
}
}
}
return null;
}
internal static XmlSchemaType GetSchemaType(SchemaObjectDictionary schemaInfo, XmlQualifiedName typeName)
{
SchemaObjectInfo schemaObjectInfo;
if (schemaInfo.TryGetValue(typeName, out schemaObjectInfo))
{
return schemaObjectInfo.type;
}
return null;
}
internal static XmlSchema GetSchemaWithType(SchemaObjectDictionary schemaInfo, XmlSchemaSet schemas, XmlQualifiedName typeName)
{
SchemaObjectInfo schemaObjectInfo;
if (schemaInfo.TryGetValue(typeName, out schemaObjectInfo))
{
if (schemaObjectInfo.schema != null)
return schemaObjectInfo.schema;
}
ICollection currentSchemas = schemas.Schemas();
string ns = typeName.Namespace;
foreach (XmlSchema schema in currentSchemas)
{
if (NamespacesEqual(ns, schema.TargetNamespace))
{
return schema;
}
}
return null;
}
internal static XmlSchemaElement GetSchemaElement(XmlSchemaSet schemas, XmlQualifiedName elementQName, out XmlSchema outSchema)
{
outSchema = null;
ICollection currentSchemas = schemas.Schemas();
string ns = elementQName.Namespace;
foreach (XmlSchema schema in currentSchemas)
{
if (NamespacesEqual(ns, schema.TargetNamespace))
{
outSchema = schema;
foreach (XmlSchemaObject schemaObj in schema.Items)
{
XmlSchemaElement schemaElement = schemaObj as XmlSchemaElement;
if (schemaElement != null && schemaElement.Name == elementQName.Name)
{
return schemaElement;
}
}
}
}
return null;
}
internal static XmlSchemaElement GetSchemaElement(SchemaObjectDictionary schemaInfo, XmlQualifiedName elementName)
{
SchemaObjectInfo schemaObjectInfo;
if (schemaInfo.TryGetValue(elementName, out schemaObjectInfo))
{
return schemaObjectInfo.element;
}
return null;
}
internal static XmlSchema GetSchema(string ns, XmlSchemaSet schemas)
{
if (ns == null) { ns = String.Empty; }
ICollection currentSchemas = schemas.Schemas();
foreach (XmlSchema schema in currentSchemas)
{
if ((schema.TargetNamespace == null && ns.Length == 0) || ns.Equals(schema.TargetNamespace))
{
return schema;
}
}
return CreateSchema(ns, schemas);
}
static XmlSchema CreateSchema(string ns, XmlSchemaSet schemas)
{
XmlSchema schema = new XmlSchema();
schema.ElementFormDefault = XmlSchemaForm.Qualified;
if (ns.Length > 0)
{
schema.TargetNamespace = ns;
schema.Namespaces.Add(Globals.TnsPrefix, ns);
}
schemas.Add(schema);
return schema;
}
internal static void AddElementForm(XmlSchemaElement element, XmlSchema schema)
{
if (schema.ElementFormDefault != XmlSchemaForm.Qualified)
{
element.Form = XmlSchemaForm.Qualified;
}
}
internal static void AddSchemaImport(string ns, XmlSchema schema)
{
if (SchemaHelper.NamespacesEqual(ns, schema.TargetNamespace) || SchemaHelper.NamespacesEqual(ns, Globals.SchemaNamespace) || SchemaHelper.NamespacesEqual(ns, Globals.SchemaInstanceNamespace))
return;
foreach (object item in schema.Includes)
{
if (item is XmlSchemaImport)
{
if (SchemaHelper.NamespacesEqual(ns, ((XmlSchemaImport)item).Namespace))
return;
}
}
XmlSchemaImport import = new XmlSchemaImport();
if (ns != null && ns.Length > 0)
import.Namespace = ns;
schema.Includes.Add(import);
}
internal static XmlSchema GetSchemaWithGlobalElementDeclaration(XmlSchemaElement element, XmlSchemaSet schemas)
{
ICollection currentSchemas = schemas.Schemas();
foreach (XmlSchema schema in currentSchemas)
{
foreach (XmlSchemaObject schemaObject in schema.Items)
{
XmlSchemaElement schemaElement = schemaObject as XmlSchemaElement;
if (schemaElement == null)
continue;
if (schemaElement == element)
{
return schema;
}
}
}
return null;
}
internal static XmlQualifiedName GetGlobalElementDeclaration(XmlSchemaSet schemas, XmlQualifiedName typeQName, out bool isNullable)
{
ICollection currentSchemas = schemas.Schemas();
string ns = typeQName.Namespace;
if (ns == null)
ns = string.Empty;
isNullable = false;
foreach (XmlSchema schema in currentSchemas)
{
foreach (XmlSchemaObject schemaObject in schema.Items)
{
XmlSchemaElement schemaElement = schemaObject as XmlSchemaElement;
if (schemaElement == null)
continue;
if (schemaElement.SchemaTypeName.Equals(typeQName))
{
isNullable = schemaElement.IsNillable;
return new XmlQualifiedName(schemaElement.Name, schema.TargetNamespace);
}
}
}
return null;
}
}
}
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