1 //------------------------------------------------------------------------------
2 // <copyright file="DateTimeOffsetStorage.cs" company="Microsoft">
3 // Copyright (c) Microsoft Corporation. All rights reserved.
5 // <owner current="true" primary="true">Microsoft</owner>
6 // <owner current="true" primary="false">Microsoft</owner>
7 //------------------------------------------------------------------------------
9 namespace System.Data.Common {
12 using System.Data.SqlTypes;
13 using System.Collections;
15 internal sealed class DateTimeOffsetStorage : DataStorage {
17 private static readonly DateTimeOffset defaultValue = DateTimeOffset.MinValue;
19 private DateTimeOffset[] values;
21 internal DateTimeOffsetStorage(DataColumn column)
22 : base(column, typeof(DateTimeOffset), defaultValue, StorageType.DateTimeOffset) {
25 override public Object Aggregate(int[] records, AggregateType kind) {
29 case AggregateType.Min:
30 DateTimeOffset min = DateTimeOffset.MaxValue;
31 for (int i = 0; i < records.Length; i++) {
32 int record = records[i];
33 if (HasValue(record)) {
34 min=(DateTimeOffset.Compare(values[record],min) < 0) ? values[record] : min;
43 case AggregateType.Max:
44 DateTimeOffset max = DateTimeOffset.MinValue;
45 for (int i = 0; i < records.Length; i++) {
46 int record = records[i];
47 if (HasValue(record)) {
48 max=(DateTimeOffset.Compare(values[record],max) >= 0) ? values[record] : max;
57 case AggregateType.First:
58 if (records.Length > 0) {
59 return values[records[0]];
63 case AggregateType.Count:
65 for (int i = 0; i < records.Length; i++) {
66 if (HasValue(records[i])) {
73 catch (OverflowException) {
74 throw ExprException.Overflow(typeof(DateTimeOffset));
76 throw ExceptionBuilder.AggregateException(kind, DataType);
79 override public int Compare(int recordNo1, int recordNo2) {
80 DateTimeOffset valueNo1 = values[recordNo1];
81 DateTimeOffset valueNo2 = values[recordNo2];
83 if (valueNo1 == defaultValue || valueNo2 == defaultValue) {
84 int bitCheck = CompareBits(recordNo1, recordNo2);
89 return DateTimeOffset.Compare(valueNo1, valueNo2);
92 public override int CompareValueTo(int recordNo, object value) {
93 System.Diagnostics.Debug.Assert(0 <= recordNo, "Invalid record");
94 System.Diagnostics.Debug.Assert(null != value, "null value");
96 if (NullValue == value) {
97 return (HasValue(recordNo) ? 1 : 0);
100 DateTimeOffset valueNo1 = values[recordNo];
101 if ((defaultValue == valueNo1) && !HasValue(recordNo)) {
104 return DateTimeOffset.Compare(valueNo1, (DateTimeOffset)value);
107 public override object ConvertValue(object value) {
108 if (NullValue != value) {
110 value = ((DateTimeOffset)value);
119 override public void Copy(int recordNo1, int recordNo2) {
120 CopyBits(recordNo1, recordNo2);
121 values[recordNo2] = values[recordNo1];
124 override public Object Get(int record) {
125 DateTimeOffset value = values[record];
126 if ((value != defaultValue) || HasValue(record)) {
132 override public void Set(int record, Object value) {
133 System.Diagnostics.Debug.Assert(null != value, "null value");
134 if (NullValue == value) {
135 values[record] = defaultValue;
136 SetNullBit(record, true);
139 values[record] = (DateTimeOffset)value;
140 SetNullBit(record, false);
144 override public void SetCapacity(int capacity) {
145 DateTimeOffset[] newValues = new DateTimeOffset[capacity];
146 if (null != values) {
147 Array.Copy(values, 0, newValues, 0, Math.Min(capacity, values.Length));
150 base.SetCapacity(capacity);
153 override public object ConvertXmlToObject(string s) {
154 return XmlConvert.ToDateTimeOffset(s);
157 override public string ConvertObjectToXml(object value) {
158 return XmlConvert.ToString((DateTimeOffset)value);
161 override protected object GetEmptyStorage(int recordCount) {
162 return new DateTimeOffset[recordCount];
165 override protected void CopyValue(int record, object store, BitArray nullbits, int storeIndex) {
166 DateTimeOffset[] typedStore = (DateTimeOffset[]) store;
167 typedStore[storeIndex] = values[record];
168 nullbits.Set(storeIndex, !HasValue(record));
171 override protected void SetStorage(object store, BitArray nullbits) {
172 values = (DateTimeOffset[]) store;
173 SetNullStorage(nullbits);