// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
namespace WixToolset.Dtf.WindowsInstaller
{
using System;
using System.Text;
using System.Collections.Generic;
using System.Globalization;
using System.Diagnostics.CodeAnalysis;
/// <summary>
/// A View represents a result set obtained when processing a query using the
/// <see cref="WixToolset.Dtf.WindowsInstaller.Database.OpenView"/> method of a
/// <see cref="Database"/>. Before any data can be transferred,
/// the query must be executed using the <see cref="Execute(Record)"/> method, passing to
/// it all replaceable parameters designated within the SQL query string.
/// </summary>
[SuppressMessage("Microsoft.Naming", "CA1710:IdentifiersShouldHaveCorrectSuffix")]
public class View : InstallerHandle, IEnumerable<Record>
{
private Database database;
private string sql;
private IList<TableInfo> tables;
private ColumnCollection columns;
internal View(IntPtr handle, string sql, Database database)
: base(handle, true)
{
this.sql = sql;
this.database = database;
}
/// <summary>
/// Gets the Database on which this View was opened.
/// </summary>
public Database Database
{
get { return this.database; }
}
/// <summary>
/// Gets the SQL query string used to open this View.
/// </summary>
public string QueryString
{
get { return this.sql; }
}
/// <summary>
/// Gets the set of tables that were included in the SQL query for this View.
/// </summary>
public IList<TableInfo> Tables
{
get
{
if (this.tables == null)
{
if (this.sql == null)
{
return null;
}
// Parse the table names out of the SQL query string by looking
// for tokens that can come before or after the list of tables.
string parseSql = this.sql.Replace('\t', ' ').Replace('\r', ' ').Replace('\n', ' ');
string upperSql = parseSql.ToUpper(CultureInfo.InvariantCulture);
string[] prefixes = new string[] { " FROM ", " INTO ", " TABLE " };
string[] suffixes = new string[] { " WHERE ", " ORDER ", " SET ", " (", " ADD " };
int index;
for (int i = 0; i < prefixes.Length; i++)
{
if ((index = upperSql.IndexOf(prefixes[i], StringComparison.Ordinal)) > 0)
{
parseSql = parseSql.Substring(index + prefixes[i].Length);
upperSql = upperSql.Substring(index + prefixes[i].Length);
}
}
if (upperSql.StartsWith("UPDATE ", StringComparison.Ordinal))
{
parseSql = parseSql.Substring(7);
upperSql = upperSql.Substring(7);
}
for (int i = 0; i < suffixes.Length; i++)
{
if ((index = upperSql.IndexOf(suffixes[i], StringComparison.Ordinal)) > 0)
{
parseSql = parseSql.Substring(0, index);
upperSql = upperSql.Substring(0, index);
}
}
if (upperSql.EndsWith(" HOLD", StringComparison.Ordinal) ||
upperSql.EndsWith(" FREE", StringComparison.Ordinal))
{
parseSql = parseSql.Substring(0, parseSql.Length - 5);
upperSql = upperSql.Substring(0, upperSql.Length - 5);
}
// At this point we should be left with a comma-separated list of table names,
// optionally quoted with grave accent marks (`).
string[] tableNames = parseSql.Split(',');
IList<TableInfo> tableList = new List<TableInfo>(tableNames.Length);
for (int i = 0; i < tableNames.Length; i++)
{
string tableName = tableNames[i].Trim(' ', '`');
tableList.Add(new TableInfo(this.database, tableName));
}
this.tables = tableList;
}
return new List<TableInfo>(this.tables);
}
}
/// <summary>
/// Gets the set of columns that were included in the query for this View,
/// or null if this view is not a SELECT query.
/// </summary>
/// <exception cref="InstallerException">the View is not in an active state</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewgetcolumninfo.asp">MsiViewGetColumnInfo</a>
/// </p></remarks>
public ColumnCollection Columns
{
get
{
if (this.columns == null)
{
this.columns = new ColumnCollection(this);
}
return this.columns;
}
}
/// <summary>
/// Executes a SQL View query and supplies any required parameters. The query uses the
/// question mark token to represent parameters as described in SQL Syntax. The values of
/// these parameters are passed in as the corresponding fields of a parameter record.
/// </summary>
/// <param name="executeParams">Optional Record that supplies the parameters. This
/// Record contains values to replace the parameter tokens in the SQL query.</param>
/// <exception cref="InstallerException">the View could not be executed</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a>
/// </p></remarks>
[SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Params"), SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
public void Execute(Record executeParams)
{
uint ret = RemotableNativeMethods.MsiViewExecute(
(int) this.Handle,
(executeParams != null ? (int) executeParams.Handle : 0));
if (ret == (uint) NativeMethods.Error.BAD_QUERY_SYNTAX)
{
throw new BadQuerySyntaxException(this.sql);
}
else if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
}
/// <summary>
/// Executes a SQL View query.
/// </summary>
/// <exception cref="InstallerException">the View could not be executed</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a>
/// </p></remarks>
public void Execute() { this.Execute(null); }
/// <summary>
/// Fetches the next sequential record from the view, or null if there are no more records.
/// </summary>
/// <exception cref="InstallerException">the View is not in an active state</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// The Record object should be <see cref="InstallerHandle.Close"/>d after use.
/// It is best that the handle be closed manually as soon as it is no longer
/// needed, as leaving lots of unused handles open can degrade performance.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewfetch.asp">MsiViewFetch</a>
/// </p></remarks>
public Record Fetch()
{
int recordHandle;
uint ret = RemotableNativeMethods.MsiViewFetch((int) this.Handle, out recordHandle);
if (ret == (uint) NativeMethods.Error.NO_MORE_ITEMS)
{
return null;
}
else if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
Record r = new Record((IntPtr) recordHandle, true, this);
r.IsFormatStringInvalid = true;
return r;
}
/// <summary>
/// Updates a fetched Record.
/// </summary>
/// <param name="mode">specifies the modify mode</param>
/// <param name="record">the Record to modify</param>
/// <exception cref="InstallerException">the modification failed,
/// or a validation was requested and the data did not pass</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// You can update or delete a record immediately after inserting, or seeking provided you
/// have NOT modified the 0th field of the inserted or sought record.
/// </p><p>
/// To execute any SQL statement, a View must be created. However, a View that does not
/// create a result set, such as CREATE TABLE, or INSERT INTO, cannot be used with any of
/// the Modify methods to update tables though the view.
/// </p><p>
/// You cannot fetch a record containing binary data from one database and then use
/// that record to insert the data into another database. To move binary data from one database
/// to another, you should export the data to a file and then import it into the new database
/// using a query and the <see cref="Record.SetStream(int,string)"/>. This ensures that each database has
/// its own copy of the binary data.
/// </p><p>
/// Note that custom actions can only add, modify, or remove temporary rows, columns,
/// or tables from a database. Custom actions cannot modify persistent data in a database,
/// such as data that is a part of the database stored on disk.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>
/// </p></remarks>
/// <seealso cref="Refresh"/>
/// <seealso cref="Insert"/>
/// <seealso cref="Update"/>
/// <seealso cref="Assign"/>
/// <seealso cref="Replace"/>
/// <seealso cref="Delete"/>
/// <seealso cref="InsertTemporary"/>
/// <seealso cref="Seek"/>
/// <seealso cref="Merge"/>
/// <seealso cref="Validate"/>
/// <seealso cref="ValidateNew"/>
/// <seealso cref="ValidateFields"/>
/// <seealso cref="ValidateDelete"/>
[SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
public void Modify(ViewModifyMode mode, Record record)
{
if (record == null)
{
throw new ArgumentNullException("record");
}
uint ret = RemotableNativeMethods.MsiViewModify((int) this.Handle, (int) mode, (int) record.Handle);
if (mode == ViewModifyMode.Insert || mode == ViewModifyMode.InsertTemporary)
{
record.IsFormatStringInvalid = true;
}
if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
}
/// <summary>
/// Refreshes the data in a Record.
/// </summary>
/// <param name="record">the Record to be refreshed</param>
/// <exception cref="InstallerException">the refresh failed</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// The Record must have been obtained by calling <see cref="Fetch"/>. Fails with
/// a deleted Record. Works only with read-write Records.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>
/// </p></remarks>
public void Refresh(Record record) { this.Modify(ViewModifyMode.Refresh, record); }
/// <summary>
/// Inserts a Record into the view.
/// </summary>
/// <param name="record">the Record to be inserted</param>
/// <exception cref="InstallerException">the insertion failed</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Fails if a row with the same primary keys exists. Fails with a read-only database.
/// This method cannot be used with a View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>
/// </p></remarks>
public void Insert(Record record) { this.Modify(ViewModifyMode.Insert, record); }
/// <summary>
/// Updates the View with new data from the Record.
/// </summary>
/// <param name="record">the new data</param>
/// <exception cref="InstallerException">the update failed</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Only non-primary keys can be updated. The Record must have been obtained by calling
/// <see cref="Fetch"/>. Fails with a deleted Record. Works only with read-write Records.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>
/// </p></remarks>
public void Update(Record record) { this.Modify(ViewModifyMode.Update, record); }
/// <summary>
/// Updates or inserts a Record into the View.
/// </summary>
/// <param name="record">the Record to be assigned</param>
/// <exception cref="InstallerException">the assignment failed</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Updates record if the primary keys match an existing row and inserts if they do not match.
/// Fails with a read-only database. This method cannot be used with a View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>
/// </p></remarks>
public void Assign(Record record) { this.Modify(ViewModifyMode.Assign, record); }
/// <summary>
/// Updates or deletes and inserts a Record into the View.
/// </summary>
/// <param name="record">the Record to be replaced</param>
/// <exception cref="InstallerException">the replacement failed</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// The Record must have been obtained by calling <see cref="Fetch"/>. Updates record if the
/// primary keys are unchanged. Deletes old row and inserts new if primary keys have changed.
/// Fails with a read-only database. This method cannot be used with a View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>
/// </p></remarks>
public void Replace(Record record) { this.Modify(ViewModifyMode.Replace, record); }
/// <summary>
/// Deletes a Record from the View.
/// </summary>
/// <param name="record">the Record to be deleted</param>
/// <exception cref="InstallerException">the deletion failed</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// The Record must have been obtained by calling <see cref="Fetch"/>. Fails if the row has been
/// deleted. Works only with read-write records. This method cannot be used with a View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>
/// </p></remarks>
public void Delete(Record record) { this.Modify(ViewModifyMode.Delete, record); }
/// <summary>
/// Inserts a Record into the View. The inserted data is not persistent.
/// </summary>
/// <param name="record">the Record to be inserted</param>
/// <exception cref="InstallerException">the insertion failed</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Fails if a row with the same primary key exists. Works only with read-write records.
/// This method cannot be used with a View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>
/// </p></remarks>
public void InsertTemporary(Record record) { this.Modify(ViewModifyMode.InsertTemporary, record); }
/// <summary>
/// Refreshes the information in the supplied record without changing the position
/// in the result set and without affecting subsequent fetch operations.
/// </summary>
/// <param name="record">the Record to be filled with the result of the seek</param>
/// <exception cref="InstallerException">the seek failed</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// After seeking, the Record may then be used for subsequent Update, Delete, and Refresh
/// operations. All primary key columns of the table must be in the query and the Record must
/// have at least as many fields as the query. Seek cannot be used with multi-table queries.
/// This method cannot be used with a View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>
/// </p></remarks>
[SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
public bool Seek(Record record)
{
if (record == null)
{
throw new ArgumentNullException("record");
}
uint ret = RemotableNativeMethods.MsiViewModify((int) this.Handle, (int) ViewModifyMode.Seek, (int) record.Handle);
record.IsFormatStringInvalid = true;
if (ret == (uint) NativeMethods.Error.FUNCTION_FAILED)
{
return false;
}
else if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
return true;
}
/// <summary>
/// Inserts or validates a record.
/// </summary>
/// <param name="record">the Record to be merged</param>
/// <returns>true if the record was inserted or validated, false if there is an existing
/// record with the same primary keys that is not identical</returns>
/// <exception cref="InstallerException">the merge failed (for a reason other than invalid data)</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Works only with read-write records. This method cannot be used with a
/// View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>
/// </p></remarks>
[SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
public bool Merge(Record record)
{
if (record == null)
{
throw new ArgumentNullException("record");
}
uint ret = RemotableNativeMethods.MsiViewModify((int) this.Handle, (int) ViewModifyMode.Merge, (int) record.Handle);
if (ret == (uint) NativeMethods.Error.FUNCTION_FAILED)
{
return false;
}
else if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
return true;
}
/// <summary>
/// Validates a record, returning information about any errors.
/// </summary>
/// <param name="record">the Record to be validated</param>
/// <returns>null if the record was validated; if there is an existing record with
/// the same primary keys that has conflicting data then error information is returned</returns>
/// <exception cref="InstallerException">the validation failed (for a reason other than invalid data)</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// The Record must have been obtained by calling <see cref="Fetch"/>.
/// Works with read-write and read-only records. This method cannot be used
/// with a View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI APIs:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>,
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewgeterror.asp">MsiViewGetError</a>
/// </p></remarks>
public ICollection<ValidationErrorInfo> Validate(Record record) { return this.InternalValidate(ViewModifyMode.Validate, record); }
/// <summary>
/// Validates a new record, returning information about any errors.
/// </summary>
/// <param name="record">the Record to be validated</param>
/// <returns>null if the record was validated; if there is an existing
/// record with the same primary keys then error information is returned</returns>
/// <exception cref="InstallerException">the validation failed (for a reason other than invalid data)</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Checks for duplicate keys. The Record must have been obtained by
/// calling <see cref="Fetch"/>. Works with read-write and read-only records.
/// This method cannot be used with a View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI APIs:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>,
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewgeterror.asp">MsiViewGetError</a>
/// </p></remarks>
[SuppressMessage("Microsoft.Naming", "CA1711:IdentifiersShouldNotHaveIncorrectSuffix")]
public ICollection<ValidationErrorInfo> ValidateNew(Record record) { return this.InternalValidate(ViewModifyMode.ValidateNew, record); }
/// <summary>
/// Validates fields of a fetched or new record, returning information about any errors.
/// Can validate one or more fields of an incomplete record.
/// </summary>
/// <param name="record">the Record to be validated</param>
/// <returns>null if the record was validated; if there is an existing record with
/// the same primary keys that has conflicting data then error information is returned</returns>
/// <exception cref="InstallerException">the validation failed (for a reason other than invalid data)</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Works with read-write and read-only records. This method cannot be used with
/// a View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI APIs:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>,
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewgeterror.asp">MsiViewGetError</a>
/// </p></remarks>
public ICollection<ValidationErrorInfo> ValidateFields(Record record) { return this.InternalValidate(ViewModifyMode.ValidateField, record); }
/// <summary>
/// Validates a record that will be deleted later, returning information about any errors.
/// </summary>
/// <param name="record">the Record to be validated</param>
/// <returns>null if the record is safe to delete; if another row refers to
/// the primary keys of this row then error information is returned</returns>
/// <exception cref="InstallerException">the validation failed (for a reason other than invalid data)</exception>
/// <exception cref="InvalidHandleException">the View handle is invalid</exception>
/// <remarks><p>
/// Validation does not check for the existence of the primary keys of this row in properties
/// or strings. Does not check if a column is a foreign key to multiple tables. Works with
/// read-write and read-only records. This method cannot be used with a View containing joins.
/// </p><p>
/// See <see cref="Modify"/> for more remarks.
/// </p><p>
/// Win32 MSI APIs:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewmodify.asp">MsiViewModify</a>,
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewgeterror.asp">MsiViewGetError</a>
/// </p></remarks>
public ICollection<ValidationErrorInfo> ValidateDelete(Record record) { return this.InternalValidate(ViewModifyMode.ValidateDelete, record); }
/// <summary>
/// Enumerates over the Records retrieved by the View.
/// </summary>
/// <returns>An enumerator of Record objects.</returns>
/// <exception cref="InstallerException">The View was not <see cref="Execute(Record)"/>d before attempting the enumeration.</exception>
/// <remarks><p>
/// Each Record object should be <see cref="InstallerHandle.Close"/>d after use.
/// It is best that the handle be closed manually as soon as it is no longer
/// needed, as leaving lots of unused handles open can degrade performance.
/// However, note that it is not necessary to complete the enumeration just
/// for the purpose of closing handles, because Records are fetched lazily
/// on each step of the enumeration.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewfetch.asp">MsiViewFetch</a>
/// </p></remarks>
public IEnumerator<Record> GetEnumerator()
{
Record rec;
while ((rec = this.Fetch()) != null)
{
yield return rec;
}
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return this.GetEnumerator();
}
private ICollection<ValidationErrorInfo> InternalValidate(ViewModifyMode mode, Record record)
{
uint ret = RemotableNativeMethods.MsiViewModify((int) this.Handle, (int) mode, (int) record.Handle);
if (ret == (uint) NativeMethods.Error.INVALID_DATA)
{
ICollection<ValidationErrorInfo> errorInfo = new List<ValidationErrorInfo>();
while (true)
{
uint bufSize = 40;
StringBuilder column = new StringBuilder("", (int) bufSize);
int error = RemotableNativeMethods.MsiViewGetError((int) this.Handle, column, ref bufSize);
if (error == -2 /*MSIDBERROR_MOREDATA*/)
{
column.Capacity = (int) ++bufSize;
error = RemotableNativeMethods.MsiViewGetError((int) this.Handle, column, ref bufSize);
}
if (error == -3 /*MSIDBERROR_INVALIDARG*/)
{
throw InstallerException.ExceptionFromReturnCode((uint) NativeMethods.Error.INVALID_PARAMETER);
}
else if (error == 0 /*MSIDBERROR_NOERROR*/)
{
break;
}
errorInfo.Add(new ValidationErrorInfo((ValidationError) error, column.ToString()));
}
return errorInfo;
}
else if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
return null;
}
}
}