/// <summary>
/// Loads the expressions.
/// </summary>
private void LoadExpressions()
{
ExpressionDto dto = ExpressionManager.GetExpressionDto(ExpressionCategory.GetExpressionCategory(ExpressionCategory.CategoryKey.Policy).Key);
ddlExpression.DataSource = dto;
ddlExpression.DataBind();
}
internal object ProcessExpression(Expression expression, bool isEnumerable)
{
string empty;
Tracer tracer = new Tracer();
Tracer tracer1 = tracer;
string str = "LinqQueryProvider";
string str1 = "ProcessExpression";
string str2 = isEnumerable.ToString();
if (expression == null)
{
empty = string.Empty;
}
else
{
empty = expression.ToString();
}
tracer1.MethodCall2(str, str1, str2, empty);
if (expression != null)
{
expression = WhereExpressionOptimizer.GetOptimizedExpression(expression, this.initialQueryable, this.initialResourceRoot.ResourceType);
Expression expression1 = null;
InnermostCmdletFinder innermostCmdletFinder = new InnermostCmdletFinder();
ExpressionCategory expressionCategory = ExpressionCategory.Unhandled;
while (innermostCmdletFinder.GetInnermostCmdletExpression(expression, this.initialQueryable, this.GetEntityMetadata(this.initialResourceRoot.ResourceType), out expression1, out expressionCategory))
{
expression = this.ProcessCmdletExpression(expression, expression1, expressionCategory, isEnumerable);
}
return(this.EvaluateByLinqToObjects(expression));
}
else
{
throw new ArgumentNullException();
}
}
/// <summary>
/// Loads the expressions.
/// </summary>
/// <param name="iStartIndex">Start index of the i.</param>
/// <param name="iNumItems">The i num items.</param>
/// <param name="sFilter">The s filter.</param>
private void LoadExpressions(int iStartIndex, int iNumItems, string sFilter)
{
ExpressionDto dto = ExpressionManager.GetExpressionDto(ExpressionCategory.GetExpressionCategory(ExpressionCategory.CategoryKey.Promotion).Key);
ExpressionFilter.DataSource = dto.Expression;
ExpressionFilter.DataBind();
}
internal Expression ProcessCmdletExpression(Expression rootExpression, Expression cmdletExpression, ExpressionCategory category, bool isEnumerable)
{
if (TraceHelper.IsEnabled(5))
{
object[] objArray = new object[6];
objArray[0] = "ProcessCmdletExpression:\nRootExpression: ";
objArray[1] = rootExpression;
objArray[2] = "\nCmdletExpression: ";
objArray[3] = cmdletExpression;
objArray[4] = "\nExpression category:";
objArray[5] = category;
TraceHelper.Current.DebugMessage(string.Concat(objArray));
}
ExpressionCategory expressionCategory = category;
switch (expressionCategory)
{
case ExpressionCategory.ResourceRoot:
{
return(this.ProcessResourceRoot(rootExpression, cmdletExpression as ConstantExpression));
}
case ExpressionCategory.WhereOfResourceRoot:
{
return(this.ProcessWhereWithResourceRoot(rootExpression, cmdletExpression as MethodCallExpression, false));
}
case ExpressionCategory.WhereInsideNavPropertyWithGetRefCmdlet:
{
return(this.ProcessWhereWithResourceRoot(rootExpression, cmdletExpression as MethodCallExpression, true));
}
case ExpressionCategory.NestedPropertyComparisons:
{
return(this.ProcessNestedWhereOfResourceRoot(rootExpression, cmdletExpression as MethodCallExpression, false));
}
case ExpressionCategory.NestedPropertyComparisonsInsideNavPropertyWithGetRefCmdlet:
{
return(this.ProcessNestedWhereOfResourceRoot(rootExpression, cmdletExpression as MethodCallExpression, true));
}
case ExpressionCategory.WhereOfResultSet:
{
return(this.ProcessSelectExpansion(rootExpression, cmdletExpression as MethodCallExpression));
}
case ExpressionCategory.SelectNavProperty:
{
return(this.ProcessSelectExpansion(rootExpression, cmdletExpression as MethodCallExpression));
}
case ExpressionCategory.SelectExpansion:
{
return(this.ProcessSelectExpansion(rootExpression, cmdletExpression as MethodCallExpression));
}
}
throw new NotImplementedException();
}
protected override Expression VisitConstant(ConstantExpression expression)
{
object value = expression.Value;
IQueryable<DSResource> dSResources = value as IQueryable<DSResource>;
if (dSResources == this.resourceRoot)
{
this.cmdletExpression = expression;
this.category = ExpressionCategory.ResourceRoot;
}
return expression;
}
public bool GetInnermostCmdletExpression(Expression tree, IQueryable<DSResource> resourceRoot, EntityMetadata entityMetadata, out Expression innermost, out ExpressionCategory category)
{
this.category = ExpressionCategory.Unhandled;
this.cmdletExpression = null;
this.resourceRoot = resourceRoot;
this.entityMetadata = entityMetadata;
this.Visit(tree);
innermost = this.cmdletExpression;
category = this.category;
return (int)category != 8;
}
public bool GetInnermostCmdletExpression(Expression tree, IQueryable <DSResource> resourceRoot, EntityMetadata entityMetadata, out Expression innermost, out ExpressionCategory category)
{
this.category = ExpressionCategory.Unhandled;
this.cmdletExpression = null;
this.resourceRoot = resourceRoot;
this.entityMetadata = entityMetadata;
this.Visit(tree);
innermost = this.cmdletExpression;
category = this.category;
return((int)category != 8);
}
protected override Expression VisitConstant(ConstantExpression expression)
{
object value = expression.Value;
IQueryable <DSResource> dSResources = value as IQueryable <DSResource>;
if (dSResources == this.resourceRoot)
{
this.cmdletExpression = expression;
this.category = ExpressionCategory.ResourceRoot;
}
return(expression);
}
protected override Expression VisitMethodCall(MethodCallExpression expression)
{
if (expression.Method.Name != "Where")
{
if (expression.Method.Name != "Select")
{
if (expression.Method.Name != "SelectMany")
{
this.navigationProperty = null;
}
else
{
this.cmdletExpression = expression;
this.category = ExpressionCategory.SelectNavProperty;
this.navigationProperty = ExpressionHelper.GetResourcePropertyFromSequence(expression.Arguments[1]);
}
}
else
{
this.cmdletExpression = expression;
this.category = ExpressionCategory.SelectExpansion;
this.navigationProperty = null;
}
}
else
{
if (!ExpressionHelper.IsResourceRoot(expression.Arguments[0], this.resourceRoot))
{
if (!ExpressionHelper.IsNestedWhereClause(expression.Arguments[0], this.resourceRoot) || !ExpressionHelper.IsPropertyComparisonPredicate(expression.Arguments[1]))
{
this.cmdletExpression = expression;
this.category = ExpressionCategory.WhereOfResultSet;
this.navigationProperty = null;
}
else
{
this.cmdletExpression = expression;
if (this.navigationProperty.IsNavPropertyHasGetReferenceCmdlet(this.entityMetadata))
{
this.category = ExpressionCategory.NestedPropertyComparisonsInsideNavPropertyWithGetRefCmdlet;
}
else
{
this.category = ExpressionCategory.NestedPropertyComparisons;
}
return expression;
}
}
else
{
this.cmdletExpression = expression;
if (this.navigationProperty.IsNavPropertyHasGetReferenceCmdlet(this.entityMetadata))
{
this.category = ExpressionCategory.WhereInsideNavPropertyWithGetRefCmdlet;
}
else
{
this.category = ExpressionCategory.WhereOfResourceRoot;
}
return expression;
}
}
this.Visit(expression.Arguments[0]);
return expression;
}
protected override Expression VisitMethodCall(MethodCallExpression expression)
{
if (expression.Method.Name != "Where")
{
if (expression.Method.Name != "Select")
{
if (expression.Method.Name != "SelectMany")
{
this.navigationProperty = null;
}
else
{
this.cmdletExpression = expression;
this.category = ExpressionCategory.SelectNavProperty;
this.navigationProperty = ExpressionHelper.GetResourcePropertyFromSequence(expression.Arguments[1]);
}
}
else
{
this.cmdletExpression = expression;
this.category = ExpressionCategory.SelectExpansion;
this.navigationProperty = null;
}
}
else
{
if (!ExpressionHelper.IsResourceRoot(expression.Arguments[0], this.resourceRoot))
{
if (!ExpressionHelper.IsNestedWhereClause(expression.Arguments[0], this.resourceRoot) || !ExpressionHelper.IsPropertyComparisonPredicate(expression.Arguments[1]))
{
this.cmdletExpression = expression;
this.category = ExpressionCategory.WhereOfResultSet;
this.navigationProperty = null;
}
else
{
this.cmdletExpression = expression;
if (this.navigationProperty.IsNavPropertyHasGetReferenceCmdlet(this.entityMetadata))
{
this.category = ExpressionCategory.NestedPropertyComparisonsInsideNavPropertyWithGetRefCmdlet;
}
else
{
this.category = ExpressionCategory.NestedPropertyComparisons;
}
return(expression);
}
}
else
{
this.cmdletExpression = expression;
if (this.navigationProperty.IsNavPropertyHasGetReferenceCmdlet(this.entityMetadata))
{
this.category = ExpressionCategory.WhereInsideNavPropertyWithGetRefCmdlet;
}
else
{
this.category = ExpressionCategory.WhereOfResourceRoot;
}
return(expression);
}
}
this.Visit(expression.Arguments[0]);
return(expression);
}