internal Expression ProcessWhereWithResourceRoot(Expression rootExpression, MethodCallExpression whereExpression, bool insideNavPropertyWithGetReferenceCmdlet = false)
{
ICommand command;
LambdaExpression operand = (LambdaExpression)((UnaryExpression)whereExpression.Arguments[1]).Operand;
operand = (LambdaExpression)PartialEvaluator.Eval(operand);
ResourceType initialResourceType = this.GetInitialResourceType();
EntityMetadata entityMetadatum = this.schema.EntityMetadataDictionary[initialResourceType.FullName];
if (!insideNavPropertyWithGetReferenceCmdlet)
{
command = DataServiceController.Current.GetCommand(CommandType.Read, this.userContext, initialResourceType, entityMetadatum, this.membershipId);
}
else
{
command = new ReferenceInstanceBuilderCommand(initialResourceType, entityMetadatum);
}
DataServiceQueryProvider.ResultSet resultSet = null;
using (command)
{
operand = this.InvokeFilteredGet(command, initialResourceType, operand, out resultSet);
}
DSMethodTranslatingVisitor dSMethodTranslatingVisitor = new DSMethodTranslatingVisitor(this.resultSets);
operand = dSMethodTranslatingVisitor.VisitAndConvert <LambdaExpression>(operand, "ProcessWhereWithResourceRoot");
Func <DSResource, bool> func = (Func <DSResource, bool>)operand.Compile();
IQueryable <DSResource> dSResources = resultSet.Where <DSResource>((DSResource item) => func(item)).AsQueryable <DSResource>();
ExpressionNodeReplacer expressionNodeReplacer = new ExpressionNodeReplacer(whereExpression, Expression.Constant(dSResources));
Expression expression = expressionNodeReplacer.Visit(rootExpression);
return(expression);
}
internal Expression ProcessNestedWhereOfResourceRoot(Expression rootExpression, MethodCallExpression whereExpression, bool insideNavPropertyWithGetReferenceCmdlet = false)
{
ICommand referenceInstanceBuilderCommand;
ResourceType initialResourceType = this.GetInitialResourceType();
EntityMetadata item = this.schema.EntityMetadataDictionary[initialResourceType.FullName];
DataServiceQueryProvider.ResultSet resultSet = new DataServiceQueryProvider.ResultSet(initialResourceType);
Expression expression = null;
if (insideNavPropertyWithGetReferenceCmdlet)
{
referenceInstanceBuilderCommand = new ReferenceInstanceBuilderCommand(initialResourceType, item);
}
else
{
referenceInstanceBuilderCommand = DataServiceController.Current.GetCommand(CommandType.Read, this.userContext, initialResourceType, item, this.membershipId);
}
using (referenceInstanceBuilderCommand)
{
UriParametersHelper.AddParametersToCommand(referenceInstanceBuilderCommand, DataServiceController.Current.GetCurrentResourceUri());
this.TryAddingAllExpressions(rootExpression, whereExpression, referenceInstanceBuilderCommand, resultSet, out expression);
this.InvokeCommandWithQuota(referenceInstanceBuilderCommand, resultSet);
}
IQueryable <DSResource> dSResources = resultSet.AsQueryable <DSResource>();
ExpressionNodeReplacer expressionNodeReplacer = new ExpressionNodeReplacer(expression, Expression.Constant(dSResources));
Expression expression1 = expressionNodeReplacer.Visit(rootExpression);
return(expression1);
}
internal Expression ProcessResourceRoot(Expression rootExpression, ConstantExpression whereExpression)
{
ResourceType resourceType = this.initialResourceRoot.ResourceType;
DataServiceQueryProvider.ResultSet resultSet = null;
EntityMetadata item = this.schema.EntityMetadataDictionary[resourceType.FullName];
ICommand command = DataServiceController.Current.GetCommand(CommandType.Read, this.userContext, resourceType, item, this.membershipId);
using (command)
{
this.InvokeFilteredGet(command, resourceType, null, out resultSet);
}
IQueryable <DSResource> dSResources = resultSet.AsQueryable <DSResource>();
ExpressionNodeReplacer expressionNodeReplacer = new ExpressionNodeReplacer(whereExpression, Expression.Constant(dSResources));
Expression expression = expressionNodeReplacer.Visit(rootExpression);
return(expression);
}
public static Expression GetOptimizedExpression(Expression tree, IQueryable <DSResource> resourceRoot, ResourceType baseResourceType)
{
while (true)
{
MovableWhereFinder movableWhereFinder = new MovableWhereFinder(tree, resourceRoot, baseResourceType);
if (movableWhereFinder.MovableWhereExpression == null)
{
break;
}
MethodCallExpression item = movableWhereFinder.MovableWhereExpression.Arguments[0] as MethodCallExpression;
Expression[] expressionArray = new Expression[2];
expressionArray[0] = item.Arguments[0];
expressionArray[1] = movableWhereFinder.MovableWhereExpression.Arguments[1];
MethodCallExpression methodCallExpression = Expression.Call(movableWhereFinder.MovableWhereExpression.Method, expressionArray);
Expression[] item1 = new Expression[2];
item1[0] = methodCallExpression;
item1[1] = item.Arguments[1];
MethodCallExpression methodCallExpression1 = Expression.Call(item.Method, item1);
ExpressionNodeReplacer expressionNodeReplacer = new ExpressionNodeReplacer(movableWhereFinder.MovableWhereExpression, methodCallExpression1);
tree = expressionNodeReplacer.Visit(tree);
}
return(tree);
}
public static Expression GetOptimizedExpression(Expression tree, IQueryable<DSResource> resourceRoot, ResourceType baseResourceType)
{
while (true)
{
MovableWhereFinder movableWhereFinder = new MovableWhereFinder(tree, resourceRoot, baseResourceType);
if (movableWhereFinder.MovableWhereExpression == null)
{
break;
}
MethodCallExpression item = movableWhereFinder.MovableWhereExpression.Arguments[0] as MethodCallExpression;
Expression[] expressionArray = new Expression[2];
expressionArray[0] = item.Arguments[0];
expressionArray[1] = movableWhereFinder.MovableWhereExpression.Arguments[1];
MethodCallExpression methodCallExpression = Expression.Call(movableWhereFinder.MovableWhereExpression.Method, expressionArray);
Expression[] item1 = new Expression[2];
item1[0] = methodCallExpression;
item1[1] = item.Arguments[1];
MethodCallExpression methodCallExpression1 = Expression.Call(item.Method, item1);
ExpressionNodeReplacer expressionNodeReplacer = new ExpressionNodeReplacer(movableWhereFinder.MovableWhereExpression, methodCallExpression1);
tree = expressionNodeReplacer.Visit(tree);
}
return tree;
}
