/// <summary>
/// Generates System.CodeDom.CodeExpression from the given expression.
/// </summary>
/// <param name="expression">Expression from which System.CodeDom.CodeExpression is generated.</param>
/// <returns>Generated System.CodeDom.CodeExpression.</returns>
public override CodeExpression Visit(LinqWhereExpression expression)
{
CodeExpression source = this.GenerateCode(expression.Source);
var lambda = this.GenerateCode(expression.Lambda) as CodeLambdaExpression;
return(source.Call("Where", lambda));
}
/// <summary>
/// Evaluates the specified expression.
/// </summary>
/// <param name="expression">The expression to evaluate.</param>
/// <returns>Value of the expression.</returns>
public virtual QueryValue Visit(LinqWhereExpression expression)
{
return(this.EvaluateQueryMethodWithLambdaExpression <QueryScalarValue>(
expression,
null,
(c, l) => c.Where(l)));
}
/// <summary>
/// Resolves types for the specified expression.
/// </summary>
/// <param name="expression">The expression to resolve types for.</param>
/// <returns>Expression with resolved types.</returns>
public QueryExpression Visit(LinqWhereExpression expression)
{
var source = this.ResolveTypes(expression.Source);
var sourceType = ValidateSourceIsACollection(source);
var lambda = this.ResolveLambdaTypes(expression.Lambda, sourceType);
return(new LinqWhereExpression(source, lambda, sourceType));
}
/// <summary>
/// Evaluates the specified expression.
/// </summary>
/// <param name="expression">The expression to evaluate.</param>
/// <returns>Value of the expression.</returns>
public override QueryValue Visit(LinqWhereExpression expression)
{
return(this.VisitCollectionElementPrimitiveOrComplexTypeError(
expression,
delegate
{
return base.Visit(expression);
}));
}
/// <summary>
/// Visits a QueryExpression tree whose root node is the LinqWhereExpression.
/// </summary>
/// <param name="expression">The root node of the expression tree being visited.</param>
/// <returns>Uri query string representing the expression.</returns>
public override string Visit(LinqWhereExpression expression)
{
string source = this.ComputeUriInternal(expression.Source);
var lambda = this.ExpressionConverter.Convert(expression.Lambda);
this.SetFilterQueryOption(lambda);
this.hasQueryOption = true;
return(source);
}
/// <summary>
/// Filters the specified expression. Skip where expression.
/// </summary>
/// <param name="expression">The expression to filter.</param>
/// <returns>The filtered expression</returns>
public override QueryExpression Visit(LinqWhereExpression expression)
{
return(expression.Source.Accept(this));
}
/// <summary>
/// Visits a QueryExpression tree whose root node is the LinqWhereExpression.
/// </summary>
/// <param name="expression">The root node of the expression tree being visited.</param>
/// <returns>Uri query string representing the expression.</returns>
public override string Visit(LinqWhereExpression expression)
{
string source = this.ComputeUriInternal(expression.Source);
var lambda = this.ExpressionConverter.Convert(expression.Lambda);
this.SetFilterQueryOption(lambda);
this.hasQueryOption = true;
return source;
}
/// <summary>
/// Visits a QueryExpression tree whose root node is the LinqWhereExpression.
/// </summary>
/// <param name="expression">The root node of the expression tree being visited.</param>
/// <returns>Uri query string representing the expression.</returns>
public virtual string Visit(LinqWhereExpression expression)
{
throw new TaupoNotSupportedException("Not supported");
}
/// <summary> /// Generates System.CodeDom.CodeExpression from the given expression. /// </summary> /// <param name="expression">Expression from which System.CodeDom.CodeExpression is generated.</param> /// <returns>Generated System.CodeDom.CodeExpression.</returns> public abstract CodeExpression Visit(LinqWhereExpression expression);
/// <summary>
/// Generates System.CodeDom.CodeExpression from the given expression.
/// </summary>
/// <param name="expression">Expression from which System.CodeDom.CodeExpression is generated.</param>
/// <returns>Generated System.CodeDom.CodeExpression.</returns>
public override CodeExpression Visit(LinqWhereExpression expression)
{
var source = this.GenerateCode(expression.Source);
var prm = expression.Lambda.Parameters.Single();
var codeQuerySource = source as CodeQueryExpression;
string inputParameterName = this.GetInputParameterName(codeQuerySource);
string groupParameterName = this.GetGroupParameterName(codeQuerySource);
var newPrm = new CodeParameterDeclarationExpression();
newPrm = new CodeParameterDeclarationExpression(new CodeImplicitTypeReference(), inputParameterName);
this.ParameterNamesDictionary.Add(prm, newPrm);
CodeLambdaExpression lambda;
try
{
lambda = (CodeLambdaExpression)this.GenerateCode(expression.Lambda);
}
finally
{
this.ParameterNamesDictionary.Remove(prm);
}
if (codeQuerySource != null)
{
if (codeQuerySource.GroupByKeySelector == null && codeQuerySource.Select == null)
{
if (codeQuerySource.Where == null)
{
return(new CodeQueryExpression(
inputParameterName,
groupParameterName,
codeQuerySource.From,
lambda.Body,
codeQuerySource.OrderByKeySelectors,
codeQuerySource.AreDescending,
codeQuerySource.GroupByKeySelector,
codeQuerySource.Select));
}
else
{
return(new CodeQueryExpression(
inputParameterName,
groupParameterName,
codeQuerySource.From,
codeQuerySource.Where.BooleanAnd(lambda.Body),
codeQuerySource.OrderByKeySelectors,
codeQuerySource.AreDescending,
codeQuerySource.GroupByKeySelector,
codeQuerySource.Select));
}
}
else
{
return(new CodeQueryExpression(
inputParameterName,
groupParameterName,
codeQuerySource,
lambda.Body,
Enumerable.Empty <CodeExpression>(),
Enumerable.Empty <bool>(),
null,
null));
}
}
else
{
return(new CodeQueryExpression(
inputParameterName,
groupParameterName,
source,
lambda.Body,
Enumerable.Empty <CodeExpression>(),
Enumerable.Empty <bool>(),
null,
null));
}
}
/// <summary>
/// Generates System.CodeDom.CodeExpression from the given expression.
/// </summary>
/// <param name="expression">Expression from which System.CodeDom.CodeExpression is generated.</param>
/// <returns>Generated System.CodeDom.CodeExpression.</returns>
public override CodeExpression Visit(LinqWhereExpression expression)
{
CodeExpression source = this.GenerateCode(expression.Source);
var lambda = this.GenerateCode(expression.Lambda) as CodeLambdaExpression;
return source.Call("Where", lambda);
}
/// <summary>
/// Replaces the given expression.
/// </summary>
/// <param name="expression">The root node of the expression tree being visited.</param>
/// <returns>Replaced expression.</returns>
public virtual QueryExpression Visit(LinqWhereExpression expression)
{
return(this.VisitQueryMethodWithLambdaExpression(expression, (s, l, t) => new LinqWhereExpression(s, l, t)));
}
/// <summary>
/// Generates System.CodeDom.CodeExpression from the given expression.
/// </summary>
/// <param name="expression">Expression from which System.CodeDom.CodeExpression is generated.</param>
/// <returns>Generated System.CodeDom.CodeExpression.</returns>
public override CodeExpression Visit(LinqWhereExpression expression)
{
var source = this.GenerateCode(expression.Source);
var prm = expression.Lambda.Parameters.Single();
var codeQuerySource = source as CodeQueryExpression;
string inputParameterName = this.GetInputParameterName(codeQuerySource);
string groupParameterName = this.GetGroupParameterName(codeQuerySource);
var newPrm = new CodeParameterDeclarationExpression();
newPrm = new CodeParameterDeclarationExpression(new CodeImplicitTypeReference(), inputParameterName);
this.ParameterNamesDictionary.Add(prm, newPrm);
CodeLambdaExpression lambda;
try
{
lambda = (CodeLambdaExpression)this.GenerateCode(expression.Lambda);
}
finally
{
this.ParameterNamesDictionary.Remove(prm);
}
if (codeQuerySource != null)
{
if (codeQuerySource.GroupByKeySelector == null && codeQuerySource.Select == null)
{
if (codeQuerySource.Where == null)
{
return new CodeQueryExpression(
inputParameterName,
groupParameterName,
codeQuerySource.From,
lambda.Body,
codeQuerySource.OrderByKeySelectors,
codeQuerySource.AreDescending,
codeQuerySource.GroupByKeySelector,
codeQuerySource.Select);
}
else
{
return new CodeQueryExpression(
inputParameterName,
groupParameterName,
codeQuerySource.From,
codeQuerySource.Where.BooleanAnd(lambda.Body),
codeQuerySource.OrderByKeySelectors,
codeQuerySource.AreDescending,
codeQuerySource.GroupByKeySelector,
codeQuerySource.Select);
}
}
else
{
return new CodeQueryExpression(
inputParameterName,
groupParameterName,
codeQuerySource,
lambda.Body,
Enumerable.Empty<CodeExpression>(),
Enumerable.Empty<bool>(),
null,
null);
}
}
else
{
return new CodeQueryExpression(
inputParameterName,
groupParameterName,
source,
lambda.Body,
Enumerable.Empty<CodeExpression>(),
Enumerable.Empty<bool>(),
null,
null);
}
}
