public virtual (SelectExpression selectExpression, bool canCache) Optimize(
[NotNull] SelectExpression selectExpression,
[NotNull] IReadOnlyDictionary <string, object> parametersValues)
{
Check.NotNull(selectExpression, nameof(selectExpression));
Check.NotNull(parametersValues, nameof(parametersValues));
var canCache = true;
var inExpressionOptimized = new InExpressionValuesExpandingExpressionVisitor(
Dependencies.SqlExpressionFactory, parametersValues).Visit(selectExpression);
if (!ReferenceEquals(selectExpression, inExpressionOptimized))
{
canCache = false;
}
var nullParametersOptimized = new ParameterNullabilityBasedSqlExpressionOptimizingExpressionVisitor(
Dependencies.SqlExpressionFactory, UseRelationalNulls, parametersValues).Visit(inExpressionOptimized);
var fromSqlParameterOptimized = new FromSqlParameterApplyingExpressionVisitor(
Dependencies.SqlExpressionFactory,
Dependencies.ParameterNameGeneratorFactory.Create(),
parametersValues).Visit(nullParametersOptimized);
if (!ReferenceEquals(nullParametersOptimized, fromSqlParameterOptimized))
{
canCache = false;
}
return(selectExpression : (SelectExpression)fromSqlParameterOptimized, canCache);
}
public (SelectExpression selectExpression, bool canCache) Optimize(SelectExpression selectExpression, IReadOnlyDictionary <string, object> parametersValues)
{
var canCache = true;
var inExpressionOptimized = new InExpressionValuesExpandingExpressionVisitor(
_sqlExpressionFactory, parametersValues).Visit(selectExpression);
if (!ReferenceEquals(selectExpression, inExpressionOptimized))
{
canCache = false;
}
var nullParametersOptimized = new ParameterNullabilityBasedSqlExpressionOptimizingExpressionVisitor(
_sqlExpressionFactory, _useRelationalNulls, parametersValues).Visit(inExpressionOptimized);
var fromSqlParameterOptimized = new FromSqlParameterApplyingExpressionVisitor(
_sqlExpressionFactory,
_parameterNameGeneratorFactory.Create(),
parametersValues).Visit(nullParametersOptimized);
if (!ReferenceEquals(nullParametersOptimized, fromSqlParameterOptimized))
{
canCache = false;
}
return(selectExpression : (SelectExpression)fromSqlParameterOptimized, canCache);
}
public virtual (SelectExpression, bool) Optimize(
[NotNull] SelectExpression selectExpression,
[NotNull] IReadOnlyDictionary <string, object> parametersValues)
{
Check.NotNull(selectExpression, nameof(selectExpression));
Check.NotNull(parametersValues, nameof(parametersValues));
var canCache = true;
var(sqlExpressionOptimized, optimizerCanCache) = new NullabilityBasedSqlProcessingExpressionVisitor(
Dependencies.SqlExpressionFactory,
parametersValues,
UseRelationalNulls).Process(selectExpression);
canCache &= optimizerCanCache;
var fromSqlParameterOptimized = new FromSqlParameterApplyingExpressionVisitor(
Dependencies.SqlExpressionFactory,
Dependencies.TypeMappingSource,
Dependencies.ParameterNameGeneratorFactory.Create(),
parametersValues).Visit(sqlExpressionOptimized);
if (!ReferenceEquals(sqlExpressionOptimized, fromSqlParameterOptimized))
{
canCache = false;
}
return((SelectExpression)fromSqlParameterOptimized, canCache);
}
public SelectExpression Optimize(SelectExpression selectExpression, IReadOnlyDictionary <string, object> parametersValues)
{
var query = new InExpressionValuesExpandingExpressionVisitor(
_sqlExpressionFactory, parametersValues).Visit(selectExpression);
query = new FromSqlParameterApplyingExpressionVisitor(
_sqlExpressionFactory,
_parameterNameGeneratorFactory.Create(),
parametersValues).Visit(query);
return((SelectExpression)query);
}