SchemaHelper.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Description / SchemaHelper.cs / 1 / SchemaHelper.cs
                        
                        
                            //---------------------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------------------
namespace System.ServiceModel.Description
{ 
    using System.Collections;
    using System.ServiceModel.Channels; 
    using System.Collections.ObjectModel; 
    using System.Xml;
    using System.Xml.Schema; 
    using System.Diagnostics;
using System.Collections.Generic;

    static class SchemaHelper 
    {
        static internal void AddElementForm(XmlSchemaElement element, XmlSchema schema) 
        { 
            if (schema.ElementFormDefault != XmlSchemaForm.Qualified)
                element.Form = XmlSchemaForm.Qualified; 
        }

        static internal void AddElementToSchema(XmlSchemaElement element, XmlSchema schema, XmlSchemaSet schemaSet)
        { 
            XmlSchemaElement existingElement = (XmlSchemaElement)schema.Elements[new XmlQualifiedName(element.Name, schema.TargetNamespace)];
            if (existingElement != null) 
            { 
                if (element.SchemaType == null && existingElement.SchemaType == null && element.SchemaTypeName == existingElement.SchemaTypeName)
                    return; 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SFxConflictingGlobalElement, element.Name, schema.TargetNamespace, GetTypeName(element), GetTypeName(existingElement))));
            }

            schema.Items.Add(element); 
            if (!element.SchemaTypeName.IsEmpty)
                AddImportToSchema(element.SchemaTypeName.Namespace, schema); 
 
            schemaSet.Reprocess(schema);
        } 

        static internal void AddImportToSchema(string ns, XmlSchema schema)
        {
            if (NamespacesEqual(ns, schema.TargetNamespace) 
                || NamespacesEqual(ns, XmlSchema.Namespace)
                || NamespacesEqual(ns, XmlSchema.InstanceNamespace)) 
                return; 

            foreach (object item in schema.Includes) 
            {
                if (item is XmlSchemaImport && NamespacesEqual(ns, ((XmlSchemaImport)item).Namespace))
                    return;
            } 

            XmlSchemaImport import = new XmlSchemaImport(); 
            if (ns != null && ns.Length > 0) 
                import.Namespace = ns;
            schema.Includes.Add(import); 
        }

        static internal void AddTypeToSchema(XmlSchemaType type, XmlSchema schema, XmlSchemaSet schemaSet)
        { 
            XmlSchemaType existingType = (XmlSchemaType)schema.SchemaTypes[new XmlQualifiedName(type.Name, schema.TargetNamespace)];
            if (existingType != null) 
            { 
                if (existingType == type)
                    return; 

                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SFxConflictingGlobalType, type.Name, schema.TargetNamespace)));
            }
 
            schema.Items.Add(type);
 
            schemaSet.Reprocess(schema); 
        }
 
        static internal XmlSchema GetSchema(string ns, XmlSchemaSet schemaSet)
        {
            if (ns == null) { ns = String.Empty; }
 
            ICollection schemas = schemaSet.Schemas();
            foreach (XmlSchema existingSchema in schemas) 
            { 
                if ((existingSchema.TargetNamespace == null && ns.Length == 0) || ns.Equals(existingSchema.TargetNamespace))
                    return existingSchema; 
            }

            XmlSchema schema = new XmlSchema();
            schema.ElementFormDefault = XmlSchemaForm.Qualified; 
            if (ns.Length > 0)
                schema.TargetNamespace = ns; 
            schemaSet.Add(schema); 
            return schema;
        } 

        static string GetTypeName(XmlSchemaElement element)
        {
            if (element.SchemaType != null) 
                return "anonymous";
            if (!element.SchemaTypeName.IsEmpty) 
                return element.SchemaTypeName.ToString(); 
            return String.Empty;
        } 

        // Compare XmlSchemaElement properties set by WsdlExporter: do not check element QName,
        // this code only called for elements with matching name and namespace
        internal static bool IsMatch(XmlSchemaElement e1, XmlSchemaElement e2) 
        {
            // this code only called for elements with matching name and namespace 
            DiagnosticUtility.DebugAssert(e1.Name == e2.Name, ""); 
            // Anonymous types never match
            if (e1.SchemaType != null || e2.SchemaType != null) 
                return false;
            if (e1.SchemaTypeName != e2.SchemaTypeName)
                return false;
            // do not need to check parent Schema.ElementFormDefault: see AddElementForm in this class. 
            if (e1.Form != e2.Form)
                return false; 
            if (e1.IsNillable != e2.IsNillable) 
                return false;
            return true; 
        }

        static internal bool NamespacesEqual(string ns1, string ns2)
        { 
            if (ns1 == null || ns1.Length == 0)
                return (ns2 == null || ns2.Length == 0); 
            else 
                return ns1 == ns2;
        } 

        static internal void Compile(XmlSchemaSet schemaSet, Collection errors)
        {
            ValidationEventHandler validationEventHandler = new ValidationEventHandler(delegate(object sender, ValidationEventArgs args) { 
                HandleSchemaValidationError(sender, args, errors);
            } 
            ); 
            schemaSet.ValidationEventHandler += validationEventHandler;
            schemaSet.Compile(); 
            schemaSet.ValidationEventHandler -= validationEventHandler;
        }

        static internal void HandleSchemaValidationError(object sender, ValidationEventArgs args, Collection errors) 
        {
            MetadataConversionError warning = null; 
 
            if (args.Exception != null && args.Exception.SourceUri != null)
            { 
                XmlSchemaException ex = args.Exception;
                warning = new MetadataConversionError(SR.GetString(SR.SchemaValidationError, ex.SourceUri, ex.LineNumber, ex.LinePosition, ex.Message));
            }
            else 
            {
                warning = new MetadataConversionError(SR.GetString(SR.GeneralSchemaValidationError, args.Message)); 
            } 

            if (!errors.Contains(warning)) 
                errors.Add(warning);
        }

        static IList xsdValueTypePrimitives = new string[] 
        {
            "boolean","float","double","decimal","long","unsignedLong","int", "unsignedInt","short","unsignedShort", "byte", "unsignedByte", 
            "duration", "dateTime", "integer", "positiveInteger", "negativeInteger", "nonPositiveInteger" 
        };
 
        static IList dataContractPrimitives = new string[]
        {
            "char", "guid"
        }; 

        static IList xmlSerializerPrimitives = new string[] 
        { 
            "char", "guid"
        }; 

        static string dataContractSerializerNamespace = "http://schemas.microsoft.com/2003/10/Serialization/";
        static string xmlSerializerNamespace = "http://microsoft.com/wsdl/types/";
 
        internal static bool IsElementValueType(XmlSchemaElement element)
        { 
            XmlQualifiedName typeName = element.SchemaTypeName; 
            if (typeName == null || typeName.IsEmpty)
                return false; 
            if (typeName.Namespace == XmlSchema.Namespace)
                return xsdValueTypePrimitives.Contains(typeName.Name);
            if (typeName.Namespace == dataContractSerializerNamespace)
                return dataContractPrimitives.Contains(typeName.Name); 
            if (typeName.Namespace == xmlSerializerNamespace)
                return dataContractPrimitives.Contains(typeName.Name); 
            return false; 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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SchemaHelper.cs source code in C# .NET

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