TypeConstant.cs source code in C# .NET

                        Code:
                         / Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataEntity / System / Data / Map / ViewGeneration / Structures / TypeConstant.cs / 2 / TypeConstant.cs
                        
                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System.Text; 
using System.Collections.Generic;
using System.Data.Mapping.ViewGeneration.CqlGeneration;
using System.Data.Common;
using System.Data.Common.Utils; 
using System.Data.Metadata.Edm;
using System.Diagnostics; 
 
namespace System.Data.Mapping.ViewGeneration.Structures {
 
    // A constant for storing type values, e.g., a type constant is used to
    // denotes (say) a Person type, Address type, etc. It essentially
    // encapsulates a CDM Type
    internal class TypeConstant : CellConstant { 

        #region Constructor 
        // effects: Creates a type constant corresponding to "type" 
        internal TypeConstant(EdmType type) {
            m_cdmType = type; 
        }
        #endregion

        #region Fields 
        // The CDM type denoted by this type constant
        private EdmType m_cdmType; 
        #endregion 

        #region Properties 
        // effects: Returns the CDM type corresponding to this
        internal EdmType CdmType {
            get { return m_cdmType; }
        } 
        #endregion
 
        #region Methods 
        // effects: Given a projectedSlot that contributes to outputMember in
        // the output extent view, generates a constructor expression for 
        // outputMember's type, i.e, an expression of the form "Type(....)"
        // If refscope is non-null, instead of constructing an Entity or
        // Complex type, constructs a reference
        internal override StringBuilder AsCql(StringBuilder builder, MemberPath outputMember, string blockAlias) { 

            // Gather the fields for a constructor or a Ref expression 
            List fields = new List(); 
            EntitySet refScope = outputMember.GetScopeOfRelationEnd();
            EntityType refEntityType = null; 

            if (refScope != null) {
                // Construct a scoped reference: CreateRef(CPerson1, row(pid1, pid2))
                EntityType entityType = refScope.ElementType; 
                refEntityType = (EntityType)(((RefType)outputMember.EdmType).ElementType);
                builder.Append("CreateRef("); 
                CqlWriter.AppendEscapedQualifiedName(builder, refScope.EntityContainer.Name, refScope.Name); 
                builder.Append(", row(");
                foreach (EdmMember keyMember in entityType.KeyMembers) { 
                    // Given the member, we need its aliased name
                    MemberPath memberPath = new MemberPath(outputMember, keyMember);
                    string fullFieldAlias = CqlWriter.GetQualifiedName(blockAlias, memberPath.CqlFieldAlias);
                    fields.Add(fullFieldAlias); 
                }
            } else { 
                // Construct an entity/complex/Association type in the Members order 
                // for fields: CPerson(CPerson1_Pid, CPerson1_Name)
                // It better be a structural type 
                StructuralType structuralType = (StructuralType)m_cdmType;
                foreach (EdmMember member in Helper.GetAllStructuralMembers(structuralType))
                {
                    // Given the member, we need its aliased name: CPerson1_Pid 
                    MemberPath memberPath = new MemberPath(outputMember, member);
                    string fullFieldAlias = CqlWriter.GetQualifiedName(blockAlias, memberPath.CqlFieldAlias); 
                    fields.Add(fullFieldAlias); 
                }
 
                // Constructor call for the constructedType
                CqlWriter.AppendEscapedTypeName(builder, m_cdmType);
                builder.Append('(');
            } 

            StringUtil.ToSeparatedString(builder, fields, ", ", null); 
            builder.Append(')'); 
            if (refScope != null) {
                Debug.Assert(refEntityType != null); 
                builder.Append(",");
                CqlWriter.AppendEscapedTypeName(builder, refEntityType);
                builder.Append(')');
            } 
            return builder;
        } 
        #endregion 

        #region Public Override Methods for object and String methods 
        protected override bool IsEqualTo(CellConstant right) {
            TypeConstant rightTypeConstant = right as TypeConstant;
            if (rightTypeConstant == null) {
                return false; 
            }
            return m_cdmType == rightTypeConstant.m_cdmType; 
        } 

        protected override int GetHash() { 
            if (m_cdmType == null) { // null type constant
                return 0;
            } else {
                return m_cdmType.GetHashCode(); 
            }
        } 
 
        private void InternalToString(StringBuilder builder, bool isInvariant) {
            if (m_cdmType == null) {  // NULL type constant 
                builder.Append(isInvariant? "NULL": System.Data.Entity.Strings.ViewGen_Null);
            } else {
                builder.Append(m_cdmType.Name);
            } 
        }
 
        internal override string ToUserString() { 
            StringBuilder builder = new StringBuilder();
            InternalToString(builder, false); 
            return builder.ToString();
        }

        internal override void  ToCompactString(StringBuilder builder) { 
            InternalToString(builder, true);
        } 
        #endregion 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System.Text; 
using System.Collections.Generic;
using System.Data.Mapping.ViewGeneration.CqlGeneration;
using System.Data.Common;
using System.Data.Common.Utils; 
using System.Data.Metadata.Edm;
using System.Diagnostics; 
 
namespace System.Data.Mapping.ViewGeneration.Structures {
 
    // A constant for storing type values, e.g., a type constant is used to
    // denotes (say) a Person type, Address type, etc. It essentially
    // encapsulates a CDM Type
    internal class TypeConstant : CellConstant { 

        #region Constructor 
        // effects: Creates a type constant corresponding to "type" 
        internal TypeConstant(EdmType type) {
            m_cdmType = type; 
        }
        #endregion

        #region Fields 
        // The CDM type denoted by this type constant
        private EdmType m_cdmType; 
        #endregion 

        #region Properties 
        // effects: Returns the CDM type corresponding to this
        internal EdmType CdmType {
            get { return m_cdmType; }
        } 
        #endregion
 
        #region Methods 
        // effects: Given a projectedSlot that contributes to outputMember in
        // the output extent view, generates a constructor expression for 
        // outputMember's type, i.e, an expression of the form "Type(....)"
        // If refscope is non-null, instead of constructing an Entity or
        // Complex type, constructs a reference
        internal override StringBuilder AsCql(StringBuilder builder, MemberPath outputMember, string blockAlias) { 

            // Gather the fields for a constructor or a Ref expression 
            List fields = new List(); 
            EntitySet refScope = outputMember.GetScopeOfRelationEnd();
            EntityType refEntityType = null; 

            if (refScope != null) {
                // Construct a scoped reference: CreateRef(CPerson1, row(pid1, pid2))
                EntityType entityType = refScope.ElementType; 
                refEntityType = (EntityType)(((RefType)outputMember.EdmType).ElementType);
                builder.Append("CreateRef("); 
                CqlWriter.AppendEscapedQualifiedName(builder, refScope.EntityContainer.Name, refScope.Name); 
                builder.Append(", row(");
                foreach (EdmMember keyMember in entityType.KeyMembers) { 
                    // Given the member, we need its aliased name
                    MemberPath memberPath = new MemberPath(outputMember, keyMember);
                    string fullFieldAlias = CqlWriter.GetQualifiedName(blockAlias, memberPath.CqlFieldAlias);
                    fields.Add(fullFieldAlias); 
                }
            } else { 
                // Construct an entity/complex/Association type in the Members order 
                // for fields: CPerson(CPerson1_Pid, CPerson1_Name)
                // It better be a structural type 
                StructuralType structuralType = (StructuralType)m_cdmType;
                foreach (EdmMember member in Helper.GetAllStructuralMembers(structuralType))
                {
                    // Given the member, we need its aliased name: CPerson1_Pid 
                    MemberPath memberPath = new MemberPath(outputMember, member);
                    string fullFieldAlias = CqlWriter.GetQualifiedName(blockAlias, memberPath.CqlFieldAlias); 
                    fields.Add(fullFieldAlias); 
                }
 
                // Constructor call for the constructedType
                CqlWriter.AppendEscapedTypeName(builder, m_cdmType);
                builder.Append('(');
            } 

            StringUtil.ToSeparatedString(builder, fields, ", ", null); 
            builder.Append(')'); 
            if (refScope != null) {
                Debug.Assert(refEntityType != null); 
                builder.Append(",");
                CqlWriter.AppendEscapedTypeName(builder, refEntityType);
                builder.Append(')');
            } 
            return builder;
        } 
        #endregion 

        #region Public Override Methods for object and String methods 
        protected override bool IsEqualTo(CellConstant right) {
            TypeConstant rightTypeConstant = right as TypeConstant;
            if (rightTypeConstant == null) {
                return false; 
            }
            return m_cdmType == rightTypeConstant.m_cdmType; 
        } 

        protected override int GetHash() { 
            if (m_cdmType == null) { // null type constant
                return 0;
            } else {
                return m_cdmType.GetHashCode(); 
            }
        } 
 
        private void InternalToString(StringBuilder builder, bool isInvariant) {
            if (m_cdmType == null) {  // NULL type constant 
                builder.Append(isInvariant? "NULL": System.Data.Entity.Strings.ViewGen_Null);
            } else {
                builder.Append(m_cdmType.Name);
            } 
        }
 
        internal override string ToUserString() { 
            StringBuilder builder = new StringBuilder();
            InternalToString(builder, false); 
            return builder.ToString();
        }

        internal override void  ToCompactString(StringBuilder builder) { 
            InternalToString(builder, true);
        } 
        #endregion 
    }
} 

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

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