Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / System / Data / Common / DataColumnMappingCollection.cs / 1 / DataColumnMappingCollection.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; #if WINFSInternalOnly internal #else public #endif sealed class DataColumnMappingCollection : MarshalByRefObject, IColumnMappingCollection { private Listitems; // delay creation until AddWithoutEvents, Insert, CopyTo, GetEnumerator public DataColumnMappingCollection() { } // 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] = (DataColumnMapping) value; } } // explicit IColumnMappingCollection implementation object IColumnMappingCollection.this[string index] { get { return this[index]; } set { ValidateType(value); this[index] = (DataColumnMapping) value; } } IColumnMapping IColumnMappingCollection.Add(string sourceColumnName, string dataSetColumnName) { return Add(sourceColumnName, dataSetColumnName); } IColumnMapping IColumnMappingCollection.GetByDataSetColumn(string dataSetColumnName) { return GetByDataSetColumn(dataSetColumnName); } [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), ResDescriptionAttribute(Res.DataColumnMappings_Count), ] public int Count { get { return ((null != items) ? items.Count : 0); } } private Type ItemType { get { return typeof(DataColumnMapping); } } [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), ResDescriptionAttribute(Res.DataColumnMappings_Item), ] public DataColumnMapping this[int index] { get { RangeCheck(index); return items[index]; } set { RangeCheck(index); Replace(index, value); } } [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), ResDescriptionAttribute(Res.DataColumnMappings_Item), ] public DataColumnMapping this[string sourceColumn] { get { int index = RangeCheck(sourceColumn); return items[index]; } set { int index = RangeCheck(sourceColumn); Replace(index, value); } } public int Add(object value) { ValidateType(value); Add((DataColumnMapping) value); return Count-1; } private DataColumnMapping Add(DataColumnMapping value) { AddWithoutEvents(value); return value; } public DataColumnMapping Add(string sourceColumn, string dataSetColumn) { return Add(new DataColumnMapping(sourceColumn, dataSetColumn)); } public void AddRange(DataColumnMapping[] values) { // V1.0.3300 AddEnumerableRange(values, false); } public void AddRange(System.Array values) { // V1.2.3300 AddEnumerableRange(values, false); } /*/// public void AddCloneOfRange(IEnumerable values) { AddEnumerableRange(values, true); }*/ 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 DataColumnMapping); } } else { foreach(DataColumnMapping value in values) { AddWithoutEvents(value); } } } private void AddWithoutEvents(DataColumnMapping 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(DataColumnMapping 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(DataColumnMapping[] array, int index) { ArrayList().CopyTo(array, index); } public DataColumnMapping GetByDataSetColumn(string value) { int index = IndexOfDataSetColumn(value); if (0 > index) { throw ADP.ColumnsDataSetColumn(value); } 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 sourceColumn) { if (!ADP.IsEmpty(sourceColumn)) { int count = Count; for (int i = 0; i < count; ++i) { if (0 == ADP.SrcCompare(sourceColumn, items[i].SourceColumn)) { return i; } } } return -1; } public int IndexOfDataSetColumn(string dataSetColumn) { if (!ADP.IsEmpty(dataSetColumn)) { int count = Count; for (int i = 0; i < count; ++i) { if ( 0 == ADP.DstCompare(dataSetColumn, items[i].DataSetColumn)) { return i; } } } return -1; } public void Insert(int index, Object value) { ValidateType(value); Insert(index, (DataColumnMapping) value); } public void Insert(int index, DataColumnMapping value) { if (null == value) { throw ADP.ColumnsAddNullAttempt("value"); } Validate(-1, value); value.Parent = this; ArrayList().Insert(index, value); } private void RangeCheck(int index) { if ((index < 0) || (Count <= index)) { throw ADP.ColumnsIndexInt32(index, this); } } private int RangeCheck(string sourceColumn) { int index = IndexOf(sourceColumn); if (index < 0) { throw ADP.ColumnsIndexSource(sourceColumn); } return index; } public void RemoveAt(int index) { RangeCheck(index); RemoveIndex(index); } public void RemoveAt(string sourceColumn) { int index = RangeCheck(sourceColumn); 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((DataColumnMapping) value); } public void Remove (DataColumnMapping value) { if (null == value) { throw ADP.ColumnsAddNullAttempt ("value"); } int index = IndexOf (value); if (-1 != index) { RemoveIndex (index); } else { throw ADP.CollectionRemoveInvalidObject(ItemType, this); } } private void Replace(int index, DataColumnMapping newValue) { Debug.Assert((null != items) && (0 <= index) && (index < Count), "RemoveIndex, invalid"); Validate(index, newValue); items[index].Parent = null; newValue.Parent = this; items[index] = newValue; } private void ValidateType(object value) { if (null == value) { throw ADP.ColumnsAddNullAttempt("value"); } else if (!ItemType.IsInstanceOfType(value)) { throw ADP.NotADataColumnMapping(value); } } private void Validate(int index, DataColumnMapping value) { if (null == value) { throw ADP.ColumnsAddNullAttempt("value"); } if (null != value.Parent) { if (this != value.Parent) { throw ADP.ColumnsIsNotParent(this); } else if (index != IndexOf(value)) { throw ADP.ColumnsIsParent(this); } } String name = value.SourceColumn; if (ADP.IsEmpty(name)) { index = 1; do { name = ADP.SourceColumn + index.ToString(System.Globalization.CultureInfo.InvariantCulture); index++; } while (-1 != IndexOf(name)); value.SourceColumn = name; } else { ValidateSourceColumn(index, name); } } internal void ValidateSourceColumn(int index, string value) { int pindex = IndexOf(value); if ((-1 != pindex) && (index != pindex)) { // must be non-null and unique throw ADP.ColumnsUniqueSourceColumn(value); } } [ EditorBrowsableAttribute(EditorBrowsableState.Advanced) ] // MDAC 69508 static public DataColumn GetDataColumn(DataColumnMappingCollection columnMappings, string sourceColumn, Type dataType, DataTable dataTable, MissingMappingAction mappingAction, MissingSchemaAction schemaAction) { if (null != columnMappings) { int index = columnMappings.IndexOf(sourceColumn); if (-1 != index) { #if DEBUG if (AdapterSwitches.DataSchema.TraceInfo) { Debug.WriteLine("mapping match on SourceColumn \"" + sourceColumn + "\""); } #endif return columnMappings.items[index].GetDataColumnBySchemaAction(dataTable, dataType, schemaAction); } } if (ADP.IsEmpty(sourceColumn)) { throw ADP.InvalidSourceColumn("sourceColumn"); } switch (mappingAction) { case MissingMappingAction.Passthrough: #if DEBUG if (AdapterSwitches.DataSchema.TraceInfo) { Debug.WriteLine("mapping passthrough of SourceColumn \"" + sourceColumn + "\""); } #endif return DataColumnMapping.GetDataColumnBySchemaAction(sourceColumn, sourceColumn, dataTable, dataType, schemaAction); case MissingMappingAction.Ignore: #if DEBUG if (AdapterSwitches.DataSchema.TraceWarning) { Debug.WriteLine("mapping filter of SourceColumn \"" + sourceColumn + "\""); } #endif return null; case MissingMappingAction.Error: #if DEBUG if (AdapterSwitches.DataSchema.TraceError) { Debug.WriteLine("mapping error on SourceColumn \"" + sourceColumn + "\""); } #endif throw ADP.MissingColumnMapping(sourceColumn); } throw ADP.InvalidMissingMappingAction(mappingAction); } [ EditorBrowsableAttribute(EditorBrowsableState.Advanced) ] // MDAC 69508 static public DataColumnMapping GetColumnMappingBySchemaAction(DataColumnMappingCollection columnMappings, string sourceColumn, MissingMappingAction mappingAction) { if (null != columnMappings) { int index = columnMappings.IndexOf(sourceColumn); if (-1 != index) { #if DEBUG if (AdapterSwitches.DataSchema.TraceInfo) { Debug.WriteLine("mapping match on SourceColumn \"" + sourceColumn + "\""); } #endif return columnMappings.items[index]; } } if (ADP.IsEmpty(sourceColumn)) { throw ADP.InvalidSourceColumn("sourceColumn"); } switch (mappingAction) { case MissingMappingAction.Passthrough: #if DEBUG if (AdapterSwitches.DataSchema.TraceInfo) { Debug.WriteLine("mapping passthrough of SourceColumn \"" + sourceColumn + "\""); } #endif return new DataColumnMapping(sourceColumn, sourceColumn); case MissingMappingAction.Ignore: #if DEBUG if (AdapterSwitches.DataSchema.TraceWarning) { Debug.WriteLine("mapping filter of SourceColumn \"" + sourceColumn + "\""); } #endif return null; case MissingMappingAction.Error: #if DEBUG if (AdapterSwitches.DataSchema.TraceError) { Debug.WriteLine("mapping error on SourceColumn \"" + sourceColumn + "\""); } #endif throw ADP.MissingColumnMapping(sourceColumn); } throw ADP.InvalidMissingMappingAction(mappingAction); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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