Interface IDataContext
Database connection abstraction interface.
Namespace: LinqToDB
Assembly: linq2db.dll
Syntax
public interface IDataContext : IConfigurationID, IAsyncDisposableProperties
| Improve this Doc View SourceCloseAfterUse
Gets or sets flag to close context after query execution or leave it open.
Declaration
bool CloseAfterUse { get; set; }Property Value
| Type | Description |
|---|---|
| System.Boolean |
ContextName
Provider identifier.
Declaration
string ContextName { get; }Property Value
| Type | Description |
|---|---|
| System.String |
CreateSqlProvider
Gets SQL builder service factory method for current context data provider.
Declaration
Func<ISqlBuilder> CreateSqlProvider { get; }Property Value
| Type | Description |
|---|---|
| Func<ISqlBuilder> |
DataReaderType
Gets data reader implementation type for current context data provider.
Declaration
Type DataReaderType { get; }Property Value
| Type | Description |
|---|---|
| Type |
GetSqlOptimizer
Gets SQL optimizer service factory method for current context data provider.
Declaration
Func<DataOptions, ISqlOptimizer> GetSqlOptimizer { get; }Property Value
| Type | Description |
|---|---|
| Func<DataOptions, ISqlOptimizer> |
InlineParameters
Gets or sets option to force inline parameter values as literals into command text. If parameter inlining not supported for specific value type, it will be used as parameter.
Declaration
bool InlineParameters { get; set; }Property Value
| Type | Description |
|---|---|
| System.Boolean |
MappingSchema
Gets mapping schema, used for current context.
Declaration
MappingSchema MappingSchema { get; }Property Value
| Type | Description |
|---|---|
| MappingSchema |
NextQueryHints
Gets list of query hints (writable collection), that will be used only for next query, executed using current context.
Declaration
List<string> NextQueryHints { get; }Property Value
| Type | Description |
|---|---|
| List<System.String> |
Options
Current DataContext LINQ options
Declaration
DataOptions Options { get; }Property Value
| Type | Description |
|---|---|
| DataOptions |
QueryHints
Gets list of query hints (writable collection), that will be used for all queries, executed using current context.
Declaration
List<string> QueryHints { get; }Property Value
| Type | Description |
|---|---|
| List<System.String> |
SqlProviderFlags
Gets SQL support flags for current context data provider.
Declaration
SqlProviderFlags SqlProviderFlags { get; }Property Value
| Type | Description |
|---|---|
| SqlProviderFlags |
SupportedTableOptions
Gets supported table options for current context data provider.
Declaration
TableOptions SupportedTableOptions { get; }Property Value
| Type | Description |
|---|---|
| TableOptions |
UnwrapDataObjectInterceptor
Declaration
IUnwrapDataObjectInterceptor UnwrapDataObjectInterceptor { get; }Property Value
| Type | Description |
|---|---|
| IUnwrapDataObjectInterceptor |
Methods
| Improve this Doc View SourceAddInterceptor(IInterceptor)
Adds interceptor instance to context.
Declaration
void AddInterceptor(IInterceptor interceptor)Parameters
| Type | Name | Description |
|---|---|---|
| IInterceptor | interceptor | Interceptor. |
Clone(Boolean)
Clones current context.
Declaration
IDataContext Clone(bool forNestedQuery)Parameters
| Type | Name | Description |
|---|---|---|
| System.Boolean | forNestedQuery |
Returns
| Type | Description |
|---|---|
| IDataContext | Cloned context. |
Close()
Closes context connection and disposes underlying resources.
Declaration
void Close()CloseAsync()
Closes context connection and disposes underlying resources.
Declaration
Task CloseAsync()Returns
| Type | Description |
|---|---|
| Task |
GetFluentMappingBuilder()
Declaration
FluentMappingBuilder GetFluentMappingBuilder()Returns
| Type | Description |
|---|---|
| FluentMappingBuilder |
GetQueryRunner(Query, Int32, Expression, Nullable<Object>[], Nullable<Object>[])
Returns query runner service for current context.
Declaration
IQueryRunner GetQueryRunner(Query query, int queryNumber, Expression expression, object? [] parameters, object? [] preambles)Parameters
| Type | Name | Description |
|---|---|---|
| Query | query | Query batch object. |
| System.Int32 | queryNumber | Index of query in query batch. |
| Expression | expression | Query results mapping expression. |
| System.Nullable<System.Object>[] | parameters | Query parameters. |
| System.Nullable<System.Object>[] | preambles | Query preambles |
Returns
| Type | Description |
|---|---|
| IQueryRunner | Query runner service. |
GetReaderExpression(DbDataReader, Int32, Expression, Type)
Returns column value reader expression.
Declaration
Expression GetReaderExpression(DbDataReader reader, int idx, Expression readerExpression, Type toType)Parameters
| Type | Name | Description |
|---|---|---|
| DbDataReader | reader | Data reader instance. |
| System.Int32 | idx | Column index. |
| Expression | readerExpression | Data reader accessor expression. |
| Type | toType | Expected value type. |
Returns
| Type | Description |
|---|---|
| Expression | Column read expression. |
IsDBNullAllowed(DbDataReader, Int32)
Returns true, of data reader column could contain
Declaration
bool? IsDBNullAllowed(DbDataReader reader, int idx)Parameters
| Type | Name | Description |
|---|---|---|
| DbDataReader | reader | Data reader instance. |
| System.Int32 | idx | Column index. |
Returns
| Type | Description |
|---|---|
| System.Nullable<System.Boolean> |
|
RemoveInterceptor(IInterceptor)
Removes interceptor instance from context.
Declaration
void RemoveInterceptor(IInterceptor interceptor)Parameters
| Type | Name | Description |
|---|---|---|
| IInterceptor | interceptor | Interceptor. |