DbProviderManifest.cs source code in C# .NET

                        Code:
                         / Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / DataEntity / System / Data / Common / DbProviderManifest.cs / 1 / DbProviderManifest.cs
                        
                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
//--------------------------------------------------------------------- 
 
using System.Collections.Generic;
using System.Collections.ObjectModel; 
using System.Data.Metadata.Edm;
using System.Xml;

namespace System.Data.Common 
{
    ///  
    /// Metadata Interface for all CLR types types 
    /// 
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "Db")] 
    public abstract class DbProviderManifest
    {
        /// 
        /// Constructor 
        /// 
        protected DbProviderManifest() 
        { 
        }
 
        /// Value to pass to GetInformation to get the StoreSchemaDefinition
        public static readonly string StoreSchemaDefinition = "StoreSchemaDefinition";
        /// Value to pass to GetInformation to get the StoreSchemaMapping
        public static readonly string StoreSchemaMapping = "StoreSchemaMapping"; 
        /// Value to pass to GetInformation to get the ConceptualSchemaDefinition
        public static readonly string ConceptualSchemaDefinition = "ConceptualSchemaDefinition"; 
 
        // System Facet Info
        ///  
        /// Name of the MaxLength Facet
        /// 
        internal const string MaxLengthFacetName = "MaxLength";
 
        /// 
        /// Name of the Unicode Facet 
        ///  
        internal const string UnicodeFacetName = "Unicode";
 
        /// 
        /// Name of the FixedLength Facet
        /// 
        internal const string FixedLengthFacetName = "FixedLength"; 

        ///  
        /// Name of the Precision Facet 
        /// 
        internal const string PrecisionFacetName = "Precision"; 

        /// 
        /// Name of the Scale Facet
        ///  
        internal const string ScaleFacetName = "Scale";
 
        ///  
        /// Name of the Nullable Facet
        ///  
        internal const string NullableFacetName = "Nullable";

        /// 
        /// Name of the DefaultValue Facet 
        /// 
        internal const string DefaultValueFacetName = "DefaultValue"; 
 
        /// 
        /// Name of the Collation Facet 
        /// 
        internal const string CollationFacetName = "Collation";

        ///  
        /// Returns the namespace used by this provider manifest
        ///  
        public abstract string NamespaceName {get;} 

        ///  
        /// Return the set of types supported by the store
        /// 
        /// A collection of primitive types
        public abstract System.Collections.ObjectModel.ReadOnlyCollection GetStoreTypes(); 

        ///  
        /// Returns all the edm functions supported by the provider manifest. 
        /// 
        /// A collection of edm functions. 
        public abstract System.Collections.ObjectModel.ReadOnlyCollection GetStoreFunctions();

        /// 
        /// Returns all the FacetDescriptions for a particular type 
        /// 
        /// the type to return FacetDescriptions for 
        /// The FacetDescriptions for the type given 
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "edm")]
        public abstract System.Collections.ObjectModel.ReadOnlyCollection GetFacetDescriptions(EdmType edmType); 

        /// 
        /// This method allows a provider writer to take a type and a set of facets
        /// and reason about what the best mapped equivalent type in EDM would be. 
        /// 
        /// A TypeUsage encapsulating a store type and a set of facets 
        /// A TypeUsage encapsulating an EDM type and a set of facets 
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Edm")]
        public abstract TypeUsage GetEdmType(TypeUsage storeType); 

        /// 
        /// This method allows a provider writer to take a type and a set of facets
        /// and reason about what the best mapped equivalent type in the store would be. 
        /// 
        /// A TypeUsage encapsulating an EDM type and a set of facets 
        /// A TypeUsage encapsulating a store type and a set of facets 
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "edm")]
        public abstract TypeUsage GetStoreType(TypeUsage edmType); 

        /// 
        /// Providers should override this to return information specific to their provider.
        /// 
        /// This method should never return null.
        ///  
        /// The name of the information to be retrieved. 
        /// An XmlReader at the begining of the information requested.
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "Db")] 
        protected abstract XmlReader GetDbInformation(string informationType);

        /// 
        /// Gets framework and provider specific information 
        ///
        /// This method should never return null. 
        ///  
        /// The name of the information to be retrieved.
        /// An XmlReader at the begining of the information requested. 
        public XmlReader GetInformation(string informationType)
        {
            XmlReader reader = null;
            try 
            {
                reader = GetDbInformation(informationType); 
            } 
            catch (Exception e)
            { 
                // we should not be wrapping all exceptions
                if (EntityUtil.IsCatchableExceptionType(e))
                {
                    // we don't want folks to have to know all the various types of exceptions that can 
                    // occur, so we just rethrow a ProviderIncompatibleException and make whatever we caught
                    // the inner exception of it. 
                    throw EntityUtil.ProviderIncompatible( 
                            System.Data.Entity.Strings.EntityClient_FailedToGetInformation(informationType), e);
                } 
                throw;
            }
            if (reader == null)
            { 
                // if the provider returned null for the conceptual schema definition, return the default one
                if (informationType == ConceptualSchemaDefinition) 
                { 
                    return DbProviderServices.GetConceptualSchemaDescription();
                } 

                throw EntityUtil.ProviderIncompatible(System.Data.Entity.Strings.ProviderReturnedNullForGetDbInformation(informationType));
            }
            return reader; 

        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
//--------------------------------------------------------------------- 
 
using System.Collections.Generic;
using System.Collections.ObjectModel; 
using System.Data.Metadata.Edm;
using System.Xml;

namespace System.Data.Common 
{
    ///  
    /// Metadata Interface for all CLR types types 
    /// 
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "Db")] 
    public abstract class DbProviderManifest
    {
        /// 
        /// Constructor 
        /// 
        protected DbProviderManifest() 
        { 
        }
 
        /// Value to pass to GetInformation to get the StoreSchemaDefinition
        public static readonly string StoreSchemaDefinition = "StoreSchemaDefinition";
        /// Value to pass to GetInformation to get the StoreSchemaMapping
        public static readonly string StoreSchemaMapping = "StoreSchemaMapping"; 
        /// Value to pass to GetInformation to get the ConceptualSchemaDefinition
        public static readonly string ConceptualSchemaDefinition = "ConceptualSchemaDefinition"; 
 
        // System Facet Info
        ///  
        /// Name of the MaxLength Facet
        /// 
        internal const string MaxLengthFacetName = "MaxLength";
 
        /// 
        /// Name of the Unicode Facet 
        ///  
        internal const string UnicodeFacetName = "Unicode";
 
        /// 
        /// Name of the FixedLength Facet
        /// 
        internal const string FixedLengthFacetName = "FixedLength"; 

        ///  
        /// Name of the Precision Facet 
        /// 
        internal const string PrecisionFacetName = "Precision"; 

        /// 
        /// Name of the Scale Facet
        ///  
        internal const string ScaleFacetName = "Scale";
 
        ///  
        /// Name of the Nullable Facet
        ///  
        internal const string NullableFacetName = "Nullable";

        /// 
        /// Name of the DefaultValue Facet 
        /// 
        internal const string DefaultValueFacetName = "DefaultValue"; 
 
        /// 
        /// Name of the Collation Facet 
        /// 
        internal const string CollationFacetName = "Collation";

        ///  
        /// Returns the namespace used by this provider manifest
        ///  
        public abstract string NamespaceName {get;} 

        ///  
        /// Return the set of types supported by the store
        /// 
        /// A collection of primitive types
        public abstract System.Collections.ObjectModel.ReadOnlyCollection GetStoreTypes(); 

        ///  
        /// Returns all the edm functions supported by the provider manifest. 
        /// 
        /// A collection of edm functions. 
        public abstract System.Collections.ObjectModel.ReadOnlyCollection GetStoreFunctions();

        /// 
        /// Returns all the FacetDescriptions for a particular type 
        /// 
        /// the type to return FacetDescriptions for 
        /// The FacetDescriptions for the type given 
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "edm")]
        public abstract System.Collections.ObjectModel.ReadOnlyCollection GetFacetDescriptions(EdmType edmType); 

        /// 
        /// This method allows a provider writer to take a type and a set of facets
        /// and reason about what the best mapped equivalent type in EDM would be. 
        /// 
        /// A TypeUsage encapsulating a store type and a set of facets 
        /// A TypeUsage encapsulating an EDM type and a set of facets 
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Edm")]
        public abstract TypeUsage GetEdmType(TypeUsage storeType); 

        /// 
        /// This method allows a provider writer to take a type and a set of facets
        /// and reason about what the best mapped equivalent type in the store would be. 
        /// 
        /// A TypeUsage encapsulating an EDM type and a set of facets 
        /// A TypeUsage encapsulating a store type and a set of facets 
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "edm")]
        public abstract TypeUsage GetStoreType(TypeUsage edmType); 

        /// 
        /// Providers should override this to return information specific to their provider.
        /// 
        /// This method should never return null.
        ///  
        /// The name of the information to be retrieved. 
        /// An XmlReader at the begining of the information requested.
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "Db")] 
        protected abstract XmlReader GetDbInformation(string informationType);

        /// 
        /// Gets framework and provider specific information 
        ///
        /// This method should never return null. 
        ///  
        /// The name of the information to be retrieved.
        /// An XmlReader at the begining of the information requested. 
        public XmlReader GetInformation(string informationType)
        {
            XmlReader reader = null;
            try 
            {
                reader = GetDbInformation(informationType); 
            } 
            catch (Exception e)
            { 
                // we should not be wrapping all exceptions
                if (EntityUtil.IsCatchableExceptionType(e))
                {
                    // we don't want folks to have to know all the various types of exceptions that can 
                    // occur, so we just rethrow a ProviderIncompatibleException and make whatever we caught
                    // the inner exception of it. 
                    throw EntityUtil.ProviderIncompatible( 
                            System.Data.Entity.Strings.EntityClient_FailedToGetInformation(informationType), e);
                } 
                throw;
            }
            if (reader == null)
            { 
                // if the provider returned null for the conceptual schema definition, return the default one
                if (informationType == ConceptualSchemaDefinition) 
                { 
                    return DbProviderServices.GetConceptualSchemaDescription();
                } 

                throw EntityUtil.ProviderIncompatible(System.Data.Entity.Strings.ProviderReturnedNullForGetDbInformation(informationType));
            }
            return reader; 

        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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DbProviderManifest.cs source code in C# .NET

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