/// <summary>
/// Overrides CreateExpressionConverter to return a converter that uses a binding context based on the compiled query parameters,
/// rather than a default binding context.
/// </summary>
/// <returns>An expression converter appropriate for converting this compiled query state instance</returns>
protected override ExpressionConverter CreateExpressionConverter()
{
LambdaExpression lambda = (LambdaExpression)base.Expression;
Funcletizer funcletizer = Funcletizer.CreateCompiledQueryEvaluationFuncletizer(this.ObjectContext, lambda.Parameters.First(), lambda.Parameters.Skip(1).ToList().AsReadOnly());
// Return a new expression converter that uses the initialized command tree and binding context.
return(new ExpressionConverter(funcletizer, lambda.Body));
}
internal FuncletizingVisitor(
Funcletizer funcletizer,
Func <Expression, bool> isClientConstant,
Func <Expression, bool> isClientVariable)
{
EntityUtil.CheckArgumentNull(funcletizer, "funcletizer");
EntityUtil.CheckArgumentNull(isClientConstant, "isClientConstant");
EntityUtil.CheckArgumentNull(isClientVariable, "isClientVariable");
_funcletizer = funcletizer;
_isClientConstant = isClientConstant;
_isClientVariable = isClientVariable;
}
internal FuncletizingVisitor(
Funcletizer funcletizer,
Func<Expression, bool> isClientConstant,
Func<Expression, bool> isClientVariable)
{
EntityUtil.CheckArgumentNull(funcletizer, "funcletizer");
EntityUtil.CheckArgumentNull(isClientConstant, "isClientConstant");
EntityUtil.CheckArgumentNull(isClientVariable, "isClientVariable");
_funcletizer = funcletizer;
_isClientConstant = isClientConstant;
_isClientVariable = isClientVariable;
}
protected virtual ExpressionConverter CreateExpressionConverter()
{
Funcletizer funcletizer = Funcletizer.CreateQueryFuncletizer(this.ObjectContext);
return(new ExpressionConverter(funcletizer, _expression));
}
internal ExpressionConverter(Funcletizer funcletizer, Expression expression)
{
EntityUtil.CheckArgumentNull(funcletizer, "funcletizer");
EntityUtil.CheckArgumentNull(expression, "expression");
// Funcletize the expression (identify subexpressions that should be evaluated
// locally)
_funcletizer = funcletizer;
expression = funcletizer.Funcletize(expression, out _recompileRequired);
// Normalize the expression (replace obfuscated parts of the tree with simpler nodes)
LinqExpressionNormalizer normalizer = new LinqExpressionNormalizer();
_expression = normalizer.Visit(expression);
_perspective = funcletizer.RootContext.Perspective;
_bindingContext = new BindingContext();
_ignoreInclude = 0;
_orderByLifter = new OrderByLifter(_aliasGenerator);
}
internal FuncletizingVisitor(
Funcletizer funcletizer,
Func<Expression, bool> isClientConstant,
Func<Expression, bool> isClientVariable)
{
//Contract.Requires(funcletizer != null);
//Contract.Requires(isClientConstant != null);
//Contract.Requires(isClientVariable != null);
_funcletizer = funcletizer;
_isClientConstant = isClientConstant;
_isClientVariable = isClientVariable;
}