DataTableMappingCollection.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Data / System / Data / Common / DataTableMappingCollection.cs / 1305376 / DataTableMappingCollection.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
// [....]
//----------------------------------------------------------------------------- 
 
namespace System.Data.Common {
 
    using System;
    using System.Collections;
    using System.Collections.Generic;
    using System.ComponentModel; 
    using System.Data;
    using System.Diagnostics; 
 
    [
    Editor("Microsoft.VSDesigner.Data.Design.DataTableMappingCollectionEditor, " + AssemblyRef.MicrosoftVSDesigner, "System.Drawing.Design.UITypeEditor, " + AssemblyRef.SystemDrawing), 
    ListBindable(false)
    ]
    public sealed class DataTableMappingCollection : MarshalByRefObject, ITableMappingCollection {
        private List items; // delay creation until AddWithoutEvents, Insert, CopyTo, GetEnumerator 

        public DataTableMappingCollection() { 
        } 

        // explicit ICollection implementation 
        bool System.Collections.ICollection.IsSynchronized {
            get { return false;}
        }
        object System.Collections.ICollection.SyncRoot { 
            get { return this;}
        } 
 
        // explicit IList implementation
        bool System.Collections.IList.IsReadOnly { 
            get { return false;}
        }
         bool System.Collections.IList.IsFixedSize {
            get { return false;} 
        }
        object System.Collections.IList.this[int index] { 
            get { 
                return this[index];
            } 
            set {
                ValidateType(value);
                this[index] = (DataTableMapping) value;
            } 
        }
 
        object ITableMappingCollection.this[string index] { 
            get {
                return this[index]; 
            }
            set {
                ValidateType(value);
                this[index] = (DataTableMapping) value; 
            }
        } 
        ITableMapping ITableMappingCollection.Add(string sourceTableName, string dataSetTableName) { 
            return Add(sourceTableName, dataSetTableName);
        } 
        ITableMapping ITableMappingCollection.GetByDataSetTable(string dataSetTableName) {
            return GetByDataSetTable(dataSetTableName);
        }
 
        [
        Browsable(false), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ResDescriptionAttribute(Res.DataTableMappings_Count),
        ] 
        public int Count {
            get {
                return ((null != items) ? items.Count : 0);
            } 
        }
 
        private Type ItemType { 
            get { return typeof(DataTableMapping); }
        } 

        [
        Browsable(false),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ResDescriptionAttribute(Res.DataTableMappings_Item),
        ] 
        public DataTableMapping this[int index] { 
            get {
                RangeCheck(index); 
                return items[index];
            }
            set {
                RangeCheck(index); 
                Replace(index, value);
            } 
        } 

        [ 
        Browsable(false),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        ResDescriptionAttribute(Res.DataTableMappings_Item),
        ] 
        public DataTableMapping this[string sourceTable] {
            get { 
                int index = RangeCheck(sourceTable); 
                return items[index];
            } 
            set {
                int index = RangeCheck(sourceTable);
                Replace(index, value);
            } 
        }
 
        public int Add(object value) { 
            ValidateType(value);
            Add((DataTableMapping) value); 
            return Count-1;
        }

        private DataTableMapping Add(DataTableMapping value) { 
            AddWithoutEvents(value);
            return value; 
        } 

        public void AddRange(DataTableMapping[] values) { // V1.0.3300 
            AddEnumerableRange(values, false);
        }

        public void AddRange(System.Array values) { // V1.2.3300 
            AddEnumerableRange(values, false);
        } 
 
        private void AddEnumerableRange(IEnumerable values, bool doClone) {
            if (null == values) { 
                throw ADP.ArgumentNull("values");
            }
            foreach(object value in values) {
                ValidateType(value); 
            }
            if (doClone) { 
                foreach(ICloneable value in values) { 
                    AddWithoutEvents(value.Clone() as DataTableMapping);
                } 
            }
            else {
                foreach(DataTableMapping value in values) {
                    AddWithoutEvents(value); 
                }
            } 
        } 

        /*///  
        public void AddCloneOfRange(IEnumerable values) {
            AddEnumerableRange(values, true);
        }*/
 
        public DataTableMapping Add(string sourceTable, string dataSetTable) {
            return Add(new DataTableMapping(sourceTable, dataSetTable)); 
        } 

        private void AddWithoutEvents(DataTableMapping value) { 
            Validate(-1, value);
            value.Parent = this;
            ArrayList().Add(value);
        } 

        // implemented as a method, not as a property because the VS7 debugger 
        // object browser calls properties to display their value, and we want this delayed 
        private List ArrayList() {
            if (null == this.items) { 
                this.items = new List();
            }
            return this.items;
        } 

        public void Clear() { 
            if (0 < Count) { 
                ClearWithoutEvents();
            } 
        }

        private void ClearWithoutEvents() {
            if (null != items) { 
                foreach(DataTableMapping item in items) {
                    item.Parent = null; 
                } 
                items.Clear();
            } 
        }

        public bool Contains(string value) {
            return (-1 != IndexOf(value)); 
        }
 
        public bool Contains(object value) { 
            return (-1 != IndexOf(value));
        } 

        public void CopyTo(Array array, int index) {
            ((ICollection)ArrayList()).CopyTo(array, index);
        } 

        public void CopyTo(DataTableMapping[] array, int index) { 
            ArrayList().CopyTo(array, index); 
        }
 
        public DataTableMapping GetByDataSetTable(string dataSetTable) {
            int index = IndexOfDataSetTable(dataSetTable);
            if (0 > index) {
                throw ADP.TablesDataSetTable(dataSetTable); 
            }
            return items[index]; 
        } 

        public IEnumerator GetEnumerator() { 
            return ArrayList().GetEnumerator();
        }

        public int IndexOf(object value) { 
            if (null != value) {
                ValidateType(value); 
                for (int i = 0; i < Count; ++i) { 
                    if (items[i] == value) {
                        return i; 
                    }
                }
            }
            return -1; 
        }
 
        public int IndexOf(string sourceTable) { 
            if (!ADP.IsEmpty(sourceTable)) {
                for (int i = 0; i < Count; ++i) { 
                    string value = items[i].SourceTable;
                    if ((null != value) && (0 == ADP.SrcCompare(sourceTable, value))) {
                        return i;
                    } 
                }
            } 
            return -1; 
        }
 
        public int IndexOfDataSetTable(string dataSetTable) {
            if (!ADP.IsEmpty(dataSetTable)) {
                for (int i = 0; i < Count; ++i) {
                    string value = items[i].DataSetTable; 
                    if ((null != value) && (0 == ADP.DstCompare(dataSetTable, value))) {
                        return i; 
                    } 
                }
            } 
            return -1;
        }

        public void Insert(int index, Object value) { 
            ValidateType(value);
            Insert(index, (DataTableMapping) value); 
        } 

        public void Insert(int index, DataTableMapping value) { 
            if (null == value) {
                throw ADP.TablesAddNullAttempt("value");
            }
            Validate(-1, value); 
            value.Parent = this;
            ArrayList().Insert(index, value); 
        } 

        private void RangeCheck(int index) { 
            if ((index < 0) || (Count <= index)) {
                throw ADP.TablesIndexInt32(index, this);
            }
        } 

        private int RangeCheck(string sourceTable) { 
            int index = IndexOf(sourceTable); 
            if (index < 0) {
                throw ADP.TablesSourceIndex(sourceTable); 
            }
            return index;
        }
 
        public void RemoveAt(int index) {
            RangeCheck(index); 
            RemoveIndex(index); 
        }
 
        public void RemoveAt(string sourceTable) {
            int index = RangeCheck(sourceTable);
            RemoveIndex(index);
        } 

        private void RemoveIndex(int index) { 
            Debug.Assert((null != items) && (0 <= index) && (index < Count), "RemoveIndex, invalid"); 
            items[index].Parent = null;
            items.RemoveAt(index); 
        }

        public void Remove(object value) {
            ValidateType(value); 
            Remove((DataTableMapping) value);
        } 
 
        public void Remove (DataTableMapping value) {
            if (null == value) { 
                throw ADP.TablesAddNullAttempt ("value");
            }
            int index = IndexOf (value);
 
            if (-1 != index) {
                RemoveIndex (index); 
            } 
            else {
                throw ADP.CollectionRemoveInvalidObject (ItemType, this); 
            }
        }

        private void Replace (int index, DataTableMapping newValue) { 
            Validate(index, newValue);
            items[index].Parent = null; 
            newValue.Parent = this; 
            items[index] = newValue;
        } 

        private void ValidateType(object value) {
            if (null == value) {
                throw ADP.TablesAddNullAttempt("value"); 
            }
            else if (!ItemType.IsInstanceOfType(value)) { 
                throw ADP.NotADataTableMapping(value); 
            }
        } 

        private void Validate(int index, DataTableMapping value) {
            if (null == value) {
                throw ADP.TablesAddNullAttempt("value"); 
            }
            if (null != value.Parent) { 
                if (this != value.Parent) { 
                    throw ADP.TablesIsNotParent(this);
                } 
                else if (index != IndexOf(value)) {
                    throw ADP.TablesIsParent(this);
                }
            } 
            String name = value.SourceTable;
            if (ADP.IsEmpty(name)) { 
                index = 1; 
                do {
                    name = ADP.SourceTable + index.ToString(System.Globalization.CultureInfo.InvariantCulture); 
                    index++;
                } while (-1 != IndexOf(name));
                value.SourceTable = name;
            } 
            else {
                ValidateSourceTable(index, name); 
            } 
        }
 
        internal void ValidateSourceTable(int index, string value) {
            int pindex = IndexOf(value);
            if ((-1 != pindex) && (index != pindex)) { // must be non-null and unique
                throw ADP.TablesUniqueSourceTable(value); 
            }
        } 
 
        [ EditorBrowsableAttribute(EditorBrowsableState.Advanced) ] // MDAC 69508
        static public DataTableMapping GetTableMappingBySchemaAction(DataTableMappingCollection tableMappings, string sourceTable, string dataSetTable, MissingMappingAction mappingAction) { 
            if (null != tableMappings) {
                int index = tableMappings.IndexOf(sourceTable);
                if (-1 != index) {
#if DEBUG 
                    if (AdapterSwitches.DataSchema.TraceWarning) {
                        Debug.WriteLine("mapping match on SourceTable \"" + sourceTable + "\""); 
                    } 
#endif
                    return tableMappings.items[index]; 
                }
            }
            if (ADP.IsEmpty(sourceTable)) {
                throw ADP.InvalidSourceTable("sourceTable"); 
            }
            switch (mappingAction) { 
                case MissingMappingAction.Passthrough: 
#if DEBUG
                    if (AdapterSwitches.DataSchema.TraceInfo) { 
                        Debug.WriteLine("mapping passthrough of SourceTable \"" + sourceTable + "\" -> \"" + dataSetTable + "\"");
                    }
#endif
                    return new DataTableMapping(sourceTable, dataSetTable); 

                case MissingMappingAction.Ignore: 
#if DEBUG 
                    if (AdapterSwitches.DataSchema.TraceWarning) {
                        Debug.WriteLine("mapping filter of SourceTable \"" + sourceTable + "\""); 
                    }
#endif
                    return null;
 
                case MissingMappingAction.Error:
#if DEBUG 
                    if (AdapterSwitches.DataSchema.TraceError) { 
                        Debug.WriteLine("mapping error on SourceTable \"" + sourceTable + "\"");
                    } 
#endif
                    throw ADP.MissingTableMapping(sourceTable);

                default: 
                    throw ADP.InvalidMissingMappingAction(mappingAction);
            } 
        } 
    }
} 

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

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