mirror of
https://github.com/gnh1201/welsonjs.git
synced 2025-07-11 03:03:10 +00:00
Namhyeon, Go
9d2fb432f7
Add the package ManagedEsent (microsoft/ManagedEsent@d358c07), and WelsonJS.Esent
237 lines
8.6 KiB
C#
237 lines
8.6 KiB
C#
//-----------------------------------------------------------------------
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// <copyright file="jet_setcolumn.cs" company="Microsoft Corporation">
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// Copyright (c) Microsoft Corporation.
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// </copyright>
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//-----------------------------------------------------------------------
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namespace Microsoft.Isam.Esent.Interop
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{
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using System;
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using System.Diagnostics.CodeAnalysis;
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using System.Globalization;
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using System.Runtime.InteropServices;
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/// <summary>
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/// The native version of the <see cref="JET_SETCOLUMN"/> structure.
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/// </summary>
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[StructLayout(LayoutKind.Sequential)]
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[SuppressMessage("Microsoft.StyleCop.CSharp.NamingRules",
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"SA1305:FieldNamesMustNotUseHungarianNotation",
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Justification = "This should match the unmanaged API, which isn't capitalized.")]
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[SuppressMessage(
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"Microsoft.StyleCop.CSharp.NamingRules",
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"SA1307:AccessibleFieldsMustBeginWithUpperCaseLetter",
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Justification = "This should match the unmanaged API, which isn't capitalized.")]
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internal struct NATIVE_SETCOLUMN
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{
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/// <summary>
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/// Columnid to set.
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/// </summary>
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public uint columnid;
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/// <summary>
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/// Data to set.
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/// </summary>
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public IntPtr pvData;
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/// <summary>
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/// Size of data to set.
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/// </summary>
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public uint cbData;
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/// <summary>
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/// SetColumns options.
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/// </summary>
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public uint grbit;
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/// <summary>
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/// Long-value offset to set.
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/// </summary>
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public uint ibLongValue;
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/// <summary>
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/// Itag sequence to set.
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/// </summary>
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public uint itagSequence;
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/// <summary>
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/// Returns the error from setting the column.
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/// </summary>
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public uint err;
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}
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/// <summary>
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/// Contains input and output parameters for <see cref="Api.JetSetColumns"/>.
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/// Fields in the structure describe what column value to set, how to set it,
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/// and where to get the column set data.
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/// </summary>
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[SuppressMessage(
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"Microsoft.StyleCop.CSharp.NamingRules",
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"SA1300:ElementMustBeginWithUpperCaseLetter",
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Justification = "This should match the unmanaged API, which isn't capitalized.")]
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public class JET_SETCOLUMN : IContentEquatable<JET_SETCOLUMN>, IDeepCloneable<JET_SETCOLUMN>
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{
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/// <summary>
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/// Gets or sets the column identifier for a column to set.
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/// </summary>
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public JET_COLUMNID columnid { get; set; }
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/// <summary>
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/// Gets or sets a pointer to the data to set.
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/// </summary>
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public byte[] pvData { get; set; }
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/// <summary>
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/// Gets or sets the offset of the data to set.
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/// </summary>
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public int ibData { get; set; }
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/// <summary>
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/// Gets or sets the size of the data to set.
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/// </summary>
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public int cbData { get; set; }
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/// <summary>
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/// Gets or sets options for the set column operation.
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/// </summary>
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public SetColumnGrbit grbit { get; set; }
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/// <summary>
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/// Gets or sets offset to the first byte to be set in a column of type
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/// <see cref="JET_coltyp.LongBinary"/> or <see cref="JET_coltyp.LongText"/>.
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/// </summary>
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public int ibLongValue { get; set; }
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/// <summary>
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/// Gets or sets the sequence number of value in a multi-valued column to be set. The array of values is one-based.
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/// The first value is sequence 1, not 0 (zero). If the record column has only one value then 1 should be passed
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/// as the itagSequence if that value is being replaced. A value of 0 (zero) means to add a new column value instance
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/// to the end of the sequence of column values.
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/// </summary>
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public int itagSequence { get; set; }
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/// <summary>
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/// Gets the error code or warning returned from the set column operation.
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/// </summary>
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public JET_wrn err { get; internal set; }
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/// <summary>
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/// Returns a <see cref="T:System.String"/> that represents the current <see cref="JET_SETCOLUMN"/>.
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/// </summary>
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/// <returns>
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/// A <see cref="T:System.String"/> that represents the current <see cref="JET_SETCOLUMN"/>.
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/// </returns>
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public override string ToString()
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{
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return string.Format(
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CultureInfo.InvariantCulture,
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"JET_SETCOLUMN(0x{0:x},{1},ibLongValue={2},itagSequence={3})",
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this.columnid.Value,
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Util.DumpBytes(this.pvData, this.ibData, this.cbData),
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this.ibLongValue,
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this.itagSequence);
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}
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/// <summary>
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/// Returns a value indicating whether this instance is equal
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/// to another instance.
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/// </summary>
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/// <param name="other">An instance to compare with this instance.</param>
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/// <returns>True if the two instances are equal.</returns>
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public bool ContentEquals(JET_SETCOLUMN other)
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{
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if (null == other)
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{
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return false;
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}
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this.CheckDataSize();
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other.CheckDataSize();
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return this.columnid == other.columnid
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&& this.ibData == other.ibData
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&& this.cbData == other.cbData
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&& this.grbit == other.grbit
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&& this.ibLongValue == other.ibLongValue
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&& this.itagSequence == other.itagSequence
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&& this.err == other.err
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&& Util.ArrayEqual(this.pvData, other.pvData, this.ibData, this.cbData);
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}
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/// <summary>
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/// Returns a deep copy of the object.
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/// </summary>
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/// <returns>A deep copy of the object.</returns>
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public JET_SETCOLUMN DeepClone()
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{
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JET_SETCOLUMN result = (JET_SETCOLUMN)this.MemberwiseClone();
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if (null != this.pvData)
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{
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result.pvData = new byte[this.pvData.Length];
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Array.Copy(this.pvData, result.pvData, this.cbData);
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}
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return result;
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}
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/// <summary>
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/// Check to see if cbData is negative or greater than the length of pvData.
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/// Check to see if ibData is negative or greater than the length of pvData.
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/// </summary>
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internal void CheckDataSize()
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{
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if (this.cbData < 0)
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{
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throw new ArgumentOutOfRangeException("cbData", "data length cannot be negative");
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}
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if (this.ibData < 0)
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{
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throw new ArgumentOutOfRangeException("ibData", "data offset cannot be negative");
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}
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if (0 != this.ibData && (null == this.pvData || this.ibData >= this.pvData.Length))
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{
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throw new ArgumentOutOfRangeException(
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"ibData",
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this.ibData,
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"cannot be greater than the length of the pvData");
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}
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if ((null == this.pvData && 0 != this.cbData && SetColumnGrbit.SizeLV != (this.grbit & SetColumnGrbit.SizeLV))
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|| (null != this.pvData && this.cbData > (this.pvData.Length - this.ibData)))
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{
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throw new ArgumentOutOfRangeException(
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"cbData",
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this.cbData,
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"cannot be greater than the length of the pvData (unless the SizeLV option is used)");
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}
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if (this.itagSequence < 0)
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{
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throw new ArgumentOutOfRangeException("itagSequence", this.itagSequence, "cannot be negative");
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}
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if (this.ibLongValue < 0)
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{
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throw new ArgumentOutOfRangeException("ibLongValue", this.ibLongValue, "cannot be negative");
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}
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}
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/// <summary>
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/// Gets the NATIVE_SETCOLUMN structure that represents the object.
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/// </summary>
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/// <returns>A NATIVE_SETCOLUMN structure whose fields match the class.</returns>
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internal NATIVE_SETCOLUMN GetNativeSetcolumn()
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{
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var setinfo = new NATIVE_SETCOLUMN
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{
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columnid = this.columnid.Value,
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cbData = checked((uint)this.cbData),
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grbit = (uint)this.grbit,
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ibLongValue = checked((uint)this.ibLongValue),
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itagSequence = checked((uint)this.itagSequence),
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};
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return setinfo;
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}
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}
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} |