RelationalParameterBasedSqlProcessor.ExpandFromSqlParameter 方法
定义
重要
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ExpandFromSqlParameter(SelectExpression, IReadOnlyDictionary<String,Object>, Boolean)
将参数 FromSqlExpression 扩展到给定参数值的内部 SelectExpression 。
protected virtual Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression ExpandFromSqlParameter(Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression selectExpression, System.Collections.Generic.IReadOnlyDictionary<string,object> parametersValues, out bool canCache);protected virtual Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression ExpandFromSqlParameter(Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression selectExpression, System.Collections.Generic.IReadOnlyDictionary<string,object?> parametersValues, out bool canCache);abstract member ExpandFromSqlParameter : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression * System.Collections.Generic.IReadOnlyDictionary<string, obj> * bool -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression
override this.ExpandFromSqlParameter : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression * System.Collections.Generic.IReadOnlyDictionary<string, obj> * bool -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpressionProtected Overridable Function ExpandFromSqlParameter (selectExpression As SelectExpression, parametersValues As IReadOnlyDictionary(Of String, Object), ByRef canCache As Boolean) As SelectExpression参数
- selectExpression
- SelectExpression
要优化的选择表达式。
- parametersValues
- IReadOnlyDictionary<String,Object>
要使用的参数值的字典。
- canCache
- Boolean
一个布尔值，该值指示是否可以缓存 select 表达式。
返回
已处理的 select 表达式。
适用于
ExpandFromSqlParameter(Expression, ParametersCacheDecorator)
将参数 FromSqlExpression 扩展到给定参数值的查询表达式内。
protected virtual System.Linq.Expressions.Expression ExpandFromSqlParameter(System.Linq.Expressions.Expression queryExpression, Microsoft.EntityFrameworkCore.Query.ParametersCacheDecorator Decorator);protected virtual System.Linq.Expressions.Expression ExpandFromSqlParameter(System.Linq.Expressions.Expression queryExpression, Microsoft.EntityFrameworkCore.Query.ParametersCacheDecorator decorator);abstract member ExpandFromSqlParameter : System.Linq.Expressions.Expression * Microsoft.EntityFrameworkCore.Query.ParametersCacheDecorator -> System.Linq.Expressions.Expression
override this.ExpandFromSqlParameter : System.Linq.Expressions.Expression * Microsoft.EntityFrameworkCore.Query.ParametersCacheDecorator -> System.Linq.Expressions.Expressionabstract member ExpandFromSqlParameter : System.Linq.Expressions.Expression * Microsoft.EntityFrameworkCore.Query.ParametersCacheDecorator -> System.Linq.Expressions.Expression
override this.ExpandFromSqlParameter : System.Linq.Expressions.Expression * Microsoft.EntityFrameworkCore.Query.ParametersCacheDecorator -> System.Linq.Expressions.ExpressionProtected Overridable Function ExpandFromSqlParameter (queryExpression As Expression, Decorator As ParametersCacheDecorator) As ExpressionProtected Overridable Function ExpandFromSqlParameter (queryExpression As Expression, decorator As ParametersCacheDecorator) As Expression参数
- queryExpression
- Expression
要优化的查询表达式。
- Decoratordecorator
- ParametersCacheDecorator
一种修饰器，允许以缓存安全的方式访问参数。
返回
已处理的查询表达式。
适用于
ExpandFromSqlParameter(Expression, IReadOnlyDictionary<String,Object>, Boolean)
将参数 FromSqlExpression 扩展到给定参数值的查询表达式内。
protected virtual System.Linq.Expressions.Expression ExpandFromSqlParameter(System.Linq.Expressions.Expression queryExpression, System.Collections.Generic.IReadOnlyDictionary<string,object?> parametersValues, out bool canCache);abstract member ExpandFromSqlParameter : System.Linq.Expressions.Expression * System.Collections.Generic.IReadOnlyDictionary<string, obj> * bool -> System.Linq.Expressions.Expression
override this.ExpandFromSqlParameter : System.Linq.Expressions.Expression * System.Collections.Generic.IReadOnlyDictionary<string, obj> * bool -> System.Linq.Expressions.ExpressionProtected Overridable Function ExpandFromSqlParameter (queryExpression As Expression, parametersValues As IReadOnlyDictionary(Of String, Object), ByRef canCache As Boolean) As Expression参数
- queryExpression
- Expression
要优化的查询表达式。
- parametersValues
- IReadOnlyDictionary<String,Object>
要使用的参数值的字典。
- canCache
- Boolean
一个布尔值，该值指示是否可以缓存查询表达式。
返回
已处理的查询表达式。
