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Overview
| Comment: | Add support for the 'No_SQLiteGetSettingValue' and 'No_SQLiteXmlConfigFile' environment variables. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
dc631206c0559782b57e341b2f173b0c |
| User & Date: | mistachkin 2016-07-01 21:23:36 |
Context
|
2016-07-01
| ||
| 21:30 | Pedantic: update the XML configuration file with the new settings as well, despite the fact that they cannot be effectively set from there. check-in: 8571817993 user: mistachkin tags: trunk | |
| 21:23 | Add support for the 'No_SQLiteGetSettingValue' and 'No_SQLiteXmlConfigFile' environment variables. check-in: dc631206c0 user: mistachkin tags: trunk | |
| 21:05 | Add experimental support for incremental blob I/O. check-in: 717bc31b47 user: mistachkin tags: trunk | |
Changes
Changes to Doc/Extra/Provider/environment.html.
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<td>If this environment variable is set [to anything], the initial
search for types in all loaded assemblies that are tagged with the
SQLiteFunction attribute will be skipped. Normally, this search is
conducted only once per application domain by the static constructor
of the SQLiteFunction class; however, these implementation details
are subject to change.</td>
</tr>
<tr valign="top">
<td>PreLoadSQLite_BaseDirectory</td>
<td>If this environment variable is set [to anything], it will be
used instead of the application base directory by the native
library pre-loader. This environment variable can be especially
useful in ASP.NET and other hosted environments where direct control
of the location of the managed assemblies is not under the control
of the application.</td>
</tr>
<tr valign="top">
<td>PreLoadSQLite_LibraryFileNameOnly</td>
<td>If this configuration variable is set [to anything], it will be
used as the base file name (without directory information) for the
native SQLite library to be pre-loaded (e.g. "sqlite3.dll" or
"libsqlite3.so.0").</td>
</tr>
<tr valign="top">
<td>PreLoadSQLite_ProcessorArchitecture</td>
<td>If this environment variable is set [to anything], it will be
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<td>If this environment variable is set [to anything], the initial
search for types in all loaded assemblies that are tagged with the
SQLiteFunction attribute will be skipped. Normally, this search is
conducted only once per application domain by the static constructor
of the SQLiteFunction class; however, these implementation details
are subject to change.</td>
</tr>
<tr valign="top">
<td>No_SQLiteGetSettingValue</td>
<td>If this environment variable is set [to anything], all calls to
the GetSettingValue method will return the default value. This will
effectively prevent all other setting values from having any effect,
including those specified via other supported environment variables
or in the associated XML configuration file.</td>
</tr>
<tr valign="top">
<td>No_SQLiteXmlConfigFile</td>
<td>If this environment variable is set [to anything], calls to the
GetSettingValue method will never result in the XML configuration
file being read; instead, the default value will be returned. This
will effectively prevent any setting values specified via the XML
configuration file from having any effect.</td>
</tr>
<tr valign="top">
<td>PreLoadSQLite_BaseDirectory</td>
<td>If this environment variable is set [to anything], it will be
used instead of the application base directory by the native
library pre-loader. This environment variable can be especially
useful in ASP.NET and other hosted environments where direct control
of the location of the managed assemblies is not under the control
of the application.</td>
</tr>
<tr valign="top">
<td>PreLoadSQLite_LibraryFileNameOnly</td>
<td>If this environment variable is set [to anything], it will be
used as the base file name (without directory information) for the
native SQLite library to be pre-loaded (e.g. "sqlite3.dll" or
"libsqlite3.so.0").</td>
</tr>
<tr valign="top">
<td>PreLoadSQLite_ProcessorArchitecture</td>
<td>If this environment variable is set [to anything], it will be
|
Changes to System.Data.SQLite/UnsafeNativeMethods.cs.
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/// anything].
/// </returns>
internal static string GetSettingValue(
string name, /* in */
string @default /* in */
)
{
if (name == null)
return @default;
/////////////////////////////////////////////////////////////////////
#region Debug Build Only
#if DEBUG
................................................................................
value = Environment.GetEnvironmentVariable(name);
if (expand && !String.IsNullOrEmpty(value))
value = Environment.ExpandEnvironmentVariables(value);
if (value != null)
return value;
#endif
try
{
string fileName = GetXmlConfigFileName();
if (fileName == null)
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/// anything].
/// </returns>
internal static string GetSettingValue(
string name, /* in */
string @default /* in */
)
{
#if !PLATFORM_COMPACTFRAMEWORK
//
// NOTE: If the special "No_SQLiteGetSettingValue" environment
// variable is set [to anything], this method will always
// return the default value.
//
if (Environment.GetEnvironmentVariable(
"No_SQLiteGetSettingValue") != null)
{
return @default;
}
#endif
/////////////////////////////////////////////////////////////////////
if (name == null)
return @default;
/////////////////////////////////////////////////////////////////////
#region Debug Build Only
#if DEBUG
................................................................................
value = Environment.GetEnvironmentVariable(name);
if (expand && !String.IsNullOrEmpty(value))
value = Environment.ExpandEnvironmentVariables(value);
if (value != null)
return value;
//
// NOTE: If the "No_SQLiteXmlConfigFile" environment variable is
// set [to anything], this method will NEVER read from the
// XML configuration file.
//
if (Environment.GetEnvironmentVariable(
"No_SQLiteXmlConfigFile") != null)
{
return @default;
}
#endif
try
{
string fileName = GetXmlConfigFileName();
if (fileName == null)
|