ColumnMapVisitor.cs source code in C# .NET

                        
Code:
                         / Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / ndp / fx / src / DataEntity / System / Data / Query / InternalTrees / ColumnMapVisitor.cs / 2 / ColumnMapVisitor.cs
                        

                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....], [....]
//--------------------------------------------------------------------- 
 
namespace System.Data.Query.InternalTrees
{ 
    using System.Collections;
    using System.Collections.Generic;
    using System.Text;
    using System.Data; 
    using System.Data.Common;
    using System.Data.Common.CommandTrees; 
    using System.Data.Metadata.Edm; 
    using System.Data.Query.PlanCompiler;
    using System.Diagnostics; 
    using System.IO;
    using System.Threading;

    /// 
 
    /// Basic Visitor Design Pattern support for ColumnMap hierarchy;
    /// 
    /// This visitor class will walk the entire hierarchy, but does not 
    /// return results; it's useful for operations such as printing and
    /// searching. 
    /// 
    /// 
    internal abstract class ColumnMapVisitor
    { 
        #region visitor helpers
 
        /// 
 
        /// Common List(ColumnMap) code
        /// 
 
        /// 
        /// 
        protected void VisitList(TListType[] columnMaps, TArgType arg)
                   where TListType : ColumnMap 
        {
            foreach (TListType columnMap in columnMaps) 
            { 
                columnMap.Accept(this, arg);
            } 
        }

        #endregion
 
        #region EntityIdentity handling
 
        protected void VisitEntityIdentity(EntityIdentity entityIdentity, TArgType arg) 
        {
            DiscriminatedEntityIdentity dei = entityIdentity as DiscriminatedEntityIdentity; 
            if (null != dei)
            {
                VisitEntityIdentity(dei, arg);
            } 
            else
            { 
                VisitEntityIdentity((SimpleEntityIdentity)entityIdentity, arg); 
            }
        } 

        protected virtual void VisitEntityIdentity(DiscriminatedEntityIdentity entityIdentity, TArgType arg)
        {
            entityIdentity.EntitySetColumnMap.Accept(this, arg); 
            foreach (SimpleColumnMap columnMap in entityIdentity.Keys)
            { 
                columnMap.Accept(this, arg); 
            }
        } 

        protected virtual void VisitEntityIdentity(SimpleEntityIdentity entityIdentity, TArgType arg)
        {
            foreach (SimpleColumnMap columnMap in entityIdentity.Keys) 
            {
                columnMap.Accept(this, arg); 
            } 
        }
 
        #endregion

        #region Visitor methods
 
        internal virtual void Visit(ComplexTypeColumnMap columnMap, TArgType arg)
        { 
            ColumnMap nullSentinel = columnMap.NullSentinel; 
            if (null != nullSentinel)
            { 
                nullSentinel.Accept(this, arg);
            }
            foreach (ColumnMap p in columnMap.Properties)
            { 
                p.Accept(this, arg);
            } 
        } 

        internal virtual void Visit(DiscriminatedCollectionColumnMap columnMap, TArgType arg) 
        {
            columnMap.Discriminator.Accept(this, arg);
            foreach (SimpleColumnMap fk in columnMap.ForeignKeys)
            { 
                fk.Accept(this, arg);
            } 
            foreach (SimpleColumnMap k in columnMap.Keys) 
            {
                k.Accept(this, arg); 
            }
            columnMap.Element.Accept(this, arg);
        }
 
        internal virtual void Visit(EntityColumnMap columnMap, TArgType arg)
        { 
            VisitEntityIdentity(columnMap.EntityIdentity, arg); 
            foreach (ColumnMap p in columnMap.Properties)
            { 
                p.Accept(this, arg);
            }
        }
 
        internal virtual void Visit(SimplePolymorphicColumnMap columnMap, TArgType arg)
        { 
            columnMap.TypeDiscriminator.Accept(this, arg); 
            foreach (ColumnMap cm in columnMap.TypeChoices.Values)
            { 
                cm.Accept(this, arg);
            }
            foreach (ColumnMap p in columnMap.Properties)
            { 
                p.Accept(this, arg);
            } 
        } 

        internal virtual void Visit(MultipleDiscriminatorPolymorphicColumnMap columnMap, TArgType arg) 
        {
            foreach (var typeDiscriminator in columnMap.TypeDiscriminators)
            {
                typeDiscriminator.Accept(this, arg); 
            }
            foreach (var typeColumnMap in columnMap.TypeChoices.Values) 
            { 
                typeColumnMap.Accept(this, arg);
            } 
            foreach (var property in columnMap.Properties)
            {
                property.Accept(this, arg);
            } 
        }
 
        internal virtual void Visit(RecordColumnMap columnMap, TArgType arg) 
        {
            ColumnMap nullSentinel = columnMap.NullSentinel; 
            if (null != nullSentinel)
            {
                nullSentinel.Accept(this, arg);
            } 
            foreach (ColumnMap p in columnMap.Properties)
            { 
                p.Accept(this, arg); 
            }
        } 

        internal virtual void Visit(RefColumnMap columnMap, TArgType arg)
        {
            VisitEntityIdentity(columnMap.EntityIdentity, arg); 
        }
 
        internal virtual void Visit(ScalarColumnMap columnMap, TArgType arg) 
        {
        } 

        internal virtual void Visit(SimpleCollectionColumnMap columnMap, TArgType arg)
        {
            foreach (SimpleColumnMap fk in columnMap.ForeignKeys) 
            {
                fk.Accept(this, arg); 
            } 
            foreach (SimpleColumnMap k in columnMap.Keys)
            { 
                k.Accept(this, arg);
            }
            columnMap.Element.Accept(this, arg);
        } 

        internal virtual void Visit(VarRefColumnMap columnMap, TArgType arg) 
        { 
        }
 
        #endregion
    }

    /// 
 
    /// Basic Visitor Design Pattern support for ColumnMap hierarchy;
    /// 
    /// This visitor class allows you to return results; it's useful for operations 
    /// that copy or manipulate the hierarchy.
    /// 
 
    /// 
    /// 
    internal abstract class ColumnMapVisitorWithResults
    { 

        #region EntityIdentity handling 
 
        protected EntityIdentity VisitEntityIdentity(EntityIdentity entityIdentity, TArgType arg)
        { 
            DiscriminatedEntityIdentity dei = entityIdentity as DiscriminatedEntityIdentity;
            if (null != dei)
            {
                return VisitEntityIdentity(dei, arg); 
            }
            else 
            { 
                return VisitEntityIdentity((SimpleEntityIdentity)entityIdentity, arg);
            } 
        }

        protected virtual EntityIdentity VisitEntityIdentity(DiscriminatedEntityIdentity entityIdentity, TArgType arg)
        { 
            return entityIdentity;
        } 
 
        protected virtual EntityIdentity VisitEntityIdentity(SimpleEntityIdentity entityIdentity, TArgType arg)
        { 
            return entityIdentity;
        }

        #endregion 

        #region Visitor methods 
 
        internal abstract TResultType Visit(ComplexTypeColumnMap columnMap, TArgType arg);
 
        internal abstract TResultType Visit(DiscriminatedCollectionColumnMap columnMap, TArgType arg);

        internal abstract TResultType Visit(EntityColumnMap columnMap, TArgType arg);
 
        internal abstract TResultType Visit(SimplePolymorphicColumnMap columnMap, TArgType arg);
 
        internal abstract TResultType Visit(RecordColumnMap columnMap, TArgType arg); 

        internal abstract TResultType Visit(RefColumnMap columnMap, TArgType arg); 

        internal abstract TResultType Visit(ScalarColumnMap columnMap, TArgType arg);

        internal abstract TResultType Visit(SimpleCollectionColumnMap columnMap, TArgType arg); 

        internal abstract TResultType Visit(VarRefColumnMap columnMap, TArgType arg); 
 
        internal abstract TResultType Visit(MultipleDiscriminatorPolymorphicColumnMap columnMap, TArgType arg);
 
        #endregion
    }

} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....], [....]
//--------------------------------------------------------------------- 
 
namespace System.Data.Query.InternalTrees
{ 
    using System.Collections;
    using System.Collections.Generic;
    using System.Text;
    using System.Data; 
    using System.Data.Common;
    using System.Data.Common.CommandTrees; 
    using System.Data.Metadata.Edm; 
    using System.Data.Query.PlanCompiler;
    using System.Diagnostics; 
    using System.IO;
    using System.Threading;

    /// 
 
    /// Basic Visitor Design Pattern support for ColumnMap hierarchy;
    /// 
    /// This visitor class will walk the entire hierarchy, but does not 
    /// return results; it's useful for operations such as printing and
    /// searching. 
    /// 
    /// 
    internal abstract class ColumnMapVisitor
    { 
        #region visitor helpers
 
        /// 
 
        /// Common List(ColumnMap) code
        /// 
 
        /// 
        /// 
        protected void VisitList(TListType[] columnMaps, TArgType arg)
                   where TListType : ColumnMap 
        {
            foreach (TListType columnMap in columnMaps) 
            { 
                columnMap.Accept(this, arg);
            } 
        }

        #endregion
 
        #region EntityIdentity handling
 
        protected void VisitEntityIdentity(EntityIdentity entityIdentity, TArgType arg) 
        {
            DiscriminatedEntityIdentity dei = entityIdentity as DiscriminatedEntityIdentity; 
            if (null != dei)
            {
                VisitEntityIdentity(dei, arg);
            } 
            else
            { 
                VisitEntityIdentity((SimpleEntityIdentity)entityIdentity, arg); 
            }
        } 

        protected virtual void VisitEntityIdentity(DiscriminatedEntityIdentity entityIdentity, TArgType arg)
        {
            entityIdentity.EntitySetColumnMap.Accept(this, arg); 
            foreach (SimpleColumnMap columnMap in entityIdentity.Keys)
            { 
                columnMap.Accept(this, arg); 
            }
        } 

        protected virtual void VisitEntityIdentity(SimpleEntityIdentity entityIdentity, TArgType arg)
        {
            foreach (SimpleColumnMap columnMap in entityIdentity.Keys) 
            {
                columnMap.Accept(this, arg); 
            } 
        }
 
        #endregion

        #region Visitor methods
 
        internal virtual void Visit(ComplexTypeColumnMap columnMap, TArgType arg)
        { 
            ColumnMap nullSentinel = columnMap.NullSentinel; 
            if (null != nullSentinel)
            { 
                nullSentinel.Accept(this, arg);
            }
            foreach (ColumnMap p in columnMap.Properties)
            { 
                p.Accept(this, arg);
            } 
        } 

        internal virtual void Visit(DiscriminatedCollectionColumnMap columnMap, TArgType arg) 
        {
            columnMap.Discriminator.Accept(this, arg);
            foreach (SimpleColumnMap fk in columnMap.ForeignKeys)
            { 
                fk.Accept(this, arg);
            } 
            foreach (SimpleColumnMap k in columnMap.Keys) 
            {
                k.Accept(this, arg); 
            }
            columnMap.Element.Accept(this, arg);
        }
 
        internal virtual void Visit(EntityColumnMap columnMap, TArgType arg)
        { 
            VisitEntityIdentity(columnMap.EntityIdentity, arg); 
            foreach (ColumnMap p in columnMap.Properties)
            { 
                p.Accept(this, arg);
            }
        }
 
        internal virtual void Visit(SimplePolymorphicColumnMap columnMap, TArgType arg)
        { 
            columnMap.TypeDiscriminator.Accept(this, arg); 
            foreach (ColumnMap cm in columnMap.TypeChoices.Values)
            { 
                cm.Accept(this, arg);
            }
            foreach (ColumnMap p in columnMap.Properties)
            { 
                p.Accept(this, arg);
            } 
        } 

        internal virtual void Visit(MultipleDiscriminatorPolymorphicColumnMap columnMap, TArgType arg) 
        {
            foreach (var typeDiscriminator in columnMap.TypeDiscriminators)
            {
                typeDiscriminator.Accept(this, arg); 
            }
            foreach (var typeColumnMap in columnMap.TypeChoices.Values) 
            { 
                typeColumnMap.Accept(this, arg);
            } 
            foreach (var property in columnMap.Properties)
            {
                property.Accept(this, arg);
            } 
        }
 
        internal virtual void Visit(RecordColumnMap columnMap, TArgType arg) 
        {
            ColumnMap nullSentinel = columnMap.NullSentinel; 
            if (null != nullSentinel)
            {
                nullSentinel.Accept(this, arg);
            } 
            foreach (ColumnMap p in columnMap.Properties)
            { 
                p.Accept(this, arg); 
            }
        } 

        internal virtual void Visit(RefColumnMap columnMap, TArgType arg)
        {
            VisitEntityIdentity(columnMap.EntityIdentity, arg); 
        }
 
        internal virtual void Visit(ScalarColumnMap columnMap, TArgType arg) 
        {
        } 

        internal virtual void Visit(SimpleCollectionColumnMap columnMap, TArgType arg)
        {
            foreach (SimpleColumnMap fk in columnMap.ForeignKeys) 
            {
                fk.Accept(this, arg); 
            } 
            foreach (SimpleColumnMap k in columnMap.Keys)
            { 
                k.Accept(this, arg);
            }
            columnMap.Element.Accept(this, arg);
        } 

        internal virtual void Visit(VarRefColumnMap columnMap, TArgType arg) 
        { 
        }
 
        #endregion
    }

    /// 
 
    /// Basic Visitor Design Pattern support for ColumnMap hierarchy;
    /// 
    /// This visitor class allows you to return results; it's useful for operations 
    /// that copy or manipulate the hierarchy.
    /// 
 
    /// 
    /// 
    internal abstract class ColumnMapVisitorWithResults
    { 

        #region EntityIdentity handling 
 
        protected EntityIdentity VisitEntityIdentity(EntityIdentity entityIdentity, TArgType arg)
        { 
            DiscriminatedEntityIdentity dei = entityIdentity as DiscriminatedEntityIdentity;
            if (null != dei)
            {
                return VisitEntityIdentity(dei, arg); 
            }
            else 
            { 
                return VisitEntityIdentity((SimpleEntityIdentity)entityIdentity, arg);
            } 
        }

        protected virtual EntityIdentity VisitEntityIdentity(DiscriminatedEntityIdentity entityIdentity, TArgType arg)
        { 
            return entityIdentity;
        } 
 
        protected virtual EntityIdentity VisitEntityIdentity(SimpleEntityIdentity entityIdentity, TArgType arg)
        { 
            return entityIdentity;
        }

        #endregion 

        #region Visitor methods 
 
        internal abstract TResultType Visit(ComplexTypeColumnMap columnMap, TArgType arg);
 
        internal abstract TResultType Visit(DiscriminatedCollectionColumnMap columnMap, TArgType arg);

        internal abstract TResultType Visit(EntityColumnMap columnMap, TArgType arg);
 
        internal abstract TResultType Visit(SimplePolymorphicColumnMap columnMap, TArgType arg);
 
        internal abstract TResultType Visit(RecordColumnMap columnMap, TArgType arg); 

        internal abstract TResultType Visit(RefColumnMap columnMap, TArgType arg); 

        internal abstract TResultType Visit(ScalarColumnMap columnMap, TArgType arg);

        internal abstract TResultType Visit(SimpleCollectionColumnMap columnMap, TArgType arg); 

        internal abstract TResultType Visit(VarRefColumnMap columnMap, TArgType arg); 
 
        internal abstract TResultType Visit(MultipleDiscriminatorPolymorphicColumnMap columnMap, TArgType arg);
 
        #endregion
    }

} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

                        

                        

                        
                        

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