Updates referencesource to .NET 4.7
[mono-project.git] / mcs / class / referencesource / System.Data / System / Data / Common / SQLTypes / SQLGuidStorage.cs
blob0c4f3a3dd98ea6c99d899e92c612533bb2712a33
1 //------------------------------------------------------------------------------
2 // <copyright file="SQLGuidStorage.cs" company="Microsoft">
3 // Copyright (c) Microsoft Corporation. All rights reserved.
4 // </copyright>
5 // <owner current="true" primary="true">Microsoft</owner>
6 // <owner current="true" primary="false">Microsoft</owner>
7 // <owner current="false" primary="false">Microsoft</owner>
8 //------------------------------------------------------------------------------
10 namespace System.Data.Common {
11 using System;
12 using System.Xml;
13 using System.Data.SqlTypes;
14 using System.Diagnostics;
15 using System.Globalization;
16 using System.IO;
17 using System.Xml.Serialization;
18 using System.Collections;
20 internal sealed class SqlGuidStorage : DataStorage {
22 private SqlGuid[] values;
24 public SqlGuidStorage(DataColumn column)
25 : base(column, typeof(SqlGuid), SqlGuid.Null, SqlGuid.Null, StorageType.SqlGuid) {
28 override public Object Aggregate(int[] records, AggregateType kind) {
29 try {
30 switch (kind) {
31 case AggregateType.First:
32 if (records.Length > 0) {
33 return values[records[0]];
35 return null;
37 case AggregateType.Count:
38 int count = 0;
39 for (int i = 0; i < records.Length; i++) {
40 if (!IsNull(records[i]))
41 count++;
43 return count;
46 catch (OverflowException) {
47 throw ExprException.Overflow(typeof(SqlGuid));
49 throw ExceptionBuilder.AggregateException(kind, DataType);
52 override public int Compare(int recordNo1, int recordNo2) {
53 return values[recordNo1].CompareTo(values[recordNo2]);
56 override public int CompareValueTo(int recordNo, Object value) {
57 return values[recordNo].CompareTo((SqlGuid)value);
60 override public object ConvertValue(object value) {
61 if (null != value) {
62 return SqlConvert.ConvertToSqlGuid(value);
64 return NullValue;
67 override public void Copy(int recordNo1, int recordNo2) {
68 values[recordNo2] = values[recordNo1];
71 override public Object Get(int record) {
72 return values[record];
75 override public bool IsNull(int record) {
76 return (values[record].IsNull);
79 override public void Set(int record, Object value) {
80 values[record] = SqlConvert.ConvertToSqlGuid(value);
83 override public void SetCapacity(int capacity) {
84 SqlGuid[] newValues = new SqlGuid[capacity];
85 if (null != values) {
86 Array.Copy(values, 0, newValues, 0, Math.Min(capacity, values.Length));
88 values = newValues;
91 override public object ConvertXmlToObject(string s) {
92 SqlGuid newValue = new SqlGuid();
93 string tempStr =string.Concat("<col>", s, "</col>"); // this is done since you can give fragmet to reader, bug 98767
94 StringReader strReader = new StringReader(tempStr);
96 IXmlSerializable tmp = newValue;
98 using (XmlTextReader xmlTextReader = new XmlTextReader(strReader)) {
99 tmp.ReadXml(xmlTextReader);
101 return ((SqlGuid)tmp);
104 override public string ConvertObjectToXml(object value) {
105 Debug.Assert(!DataStorage.IsObjectNull(value), "we shouldn't have null here");
106 Debug.Assert((value.GetType() == typeof(SqlGuid)), "wrong input type");
108 StringWriter strwriter = new StringWriter(FormatProvider);
110 using (XmlTextWriter xmlTextWriter = new XmlTextWriter (strwriter)) {
111 ((IXmlSerializable)value).WriteXml(xmlTextWriter);
113 return (strwriter.ToString ());
116 override protected object GetEmptyStorage(int recordCount) {
117 return new SqlGuid[recordCount];
120 override protected void CopyValue(int record, object store, BitArray nullbits, int storeIndex) {
121 SqlGuid[] typedStore = (SqlGuid[]) store;
122 typedStore[storeIndex] = values[record];
123 nullbits.Set(storeIndex, IsNull(record));
126 override protected void SetStorage(object store, BitArray nullbits) {
127 values = (SqlGuid[]) store;
128 //SetNullStorage(nullbits);