Entity Framework Plus - FutureValue() in a foreach loop
Recently I started using EF+ on our project with great success however sometimes I run into an issue that I have a set of entities for which I need to run a separate query.
So if I have a set of 20 customers I need to run 20 queries separately. I wonder if there is way how to avoid this using EF+ FutureValue() somehow in a foreach loop.
See this sample code:
foreach (var customer in customers)
{
customer.SomeValue = ctx.SomeDatabaseTable.Where(myCondition).FutureValue();
// this would run 20 times ... any way how to run all of the 20 queries at once?
}
entity-framework entity-framework-6 entity-framework-plus
asked Nov 16 '18 at 9:11
Jakub HolovskyJakub Holovsky
2,54043470
add a comment |
Recently I started using EF+ on our project with great success however sometimes I run into an issue that I have a set of entities for which I need to run a separate query.
So if I have a set of 20 customers I need to run 20 queries separately. I wonder if there is way how to avoid this using EF+ FutureValue() somehow in a foreach loop.
See this sample code:
foreach (var customer in customers)
{
customer.SomeValue = ctx.SomeDatabaseTable.Where(myCondition).FutureValue();
// this would run 20 times ... any way how to run all of the 20 queries at once?
}
entity-framework entity-framework-6 entity-framework-plus
asked Nov 16 '18 at 9:11
Jakub HolovskyJakub Holovsky
2,54043470
add a comment |
Recently I started using EF+ on our project with great success however sometimes I run into an issue that I have a set of entities for which I need to run a separate query.
So if I have a set of 20 customers I need to run 20 queries separately. I wonder if there is way how to avoid this using EF+ FutureValue() somehow in a foreach loop.
See this sample code:
foreach (var customer in customers)
{
customer.SomeValue = ctx.SomeDatabaseTable.Where(myCondition).FutureValue();
// this would run 20 times ... any way how to run all of the 20 queries at once?
}
entity-framework entity-framework-6 entity-framework-plus
asked Nov 16 '18 at 9:11
Jakub HolovskyJakub Holovsky
2,54043470
Recently I started using EF+ on our project with great success however sometimes I run into an issue that I have a set of entities for which I need to run a separate query.
So if I have a set of 20 customers I need to run 20 queries separately. I wonder if there is way how to avoid this using EF+ FutureValue() somehow in a foreach loop.
See this sample code:
foreach (var customer in customers)
{
customer.SomeValue = ctx.SomeDatabaseTable.Where(myCondition).FutureValue();
// this would run 20 times ... any way how to run all of the 20 queries at once?
}
entity-framework entity-framework-6 entity-framework-plus
entity-framework entity-framework-6 entity-framework-plus
asked Nov 16 '18 at 9:11
Jakub HolovskyJakub Holovsky
2,54043470
asked Nov 16 '18 at 9:11
Jakub HolovskyJakub Holovsky
2,54043470
asked Nov 16 '18 at 9:11
Jakub HolovskyJakub Holovsky
2,54043470
asked Nov 16 '18 at 9:11
Jakub HolovskyJakub Holovsky
2,54043470
asked Nov 16 '18 at 9:11
Jakub HolovskyJakub Holovsky
2,54043470
2,54043470
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You need first to generate all "QueryFuture" queries then you can use them.
So two loop should make it works.
var futureQueries = new List<BaseQueryFuture>();
// create all query futures
for(int i = 0; i < customers.Length; i++)
{
futureQueries.Add(ctx.SomeDatabaseTable.Where(myCondition).FutureValue());
}
// assign result (the first solved will make the call to the DB)
for(int i = 0; i < customers.Length; i++)
{
customer.SomeValue = ((QueryFutureValue<SomeValueType>)futureQueries[i]).Value;
}
answered Nov 16 '18 at 14:13
Jonathan MagnanJonathan Magnan
6,01021334
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You need first to generate all "QueryFuture" queries then you can use them.
So two loop should make it works.
var futureQueries = new List<BaseQueryFuture>();
// create all query futures
for(int i = 0; i < customers.Length; i++)
{
futureQueries.Add(ctx.SomeDatabaseTable.Where(myCondition).FutureValue());
}
// assign result (the first solved will make the call to the DB)
for(int i = 0; i < customers.Length; i++)
{
customer.SomeValue = ((QueryFutureValue<SomeValueType>)futureQueries[i]).Value;
}
answered Nov 16 '18 at 14:13
Jonathan MagnanJonathan Magnan
6,01021334
add a comment |
You need first to generate all "QueryFuture" queries then you can use them.
So two loop should make it works.
var futureQueries = new List<BaseQueryFuture>();
// create all query futures
for(int i = 0; i < customers.Length; i++)
{
futureQueries.Add(ctx.SomeDatabaseTable.Where(myCondition).FutureValue());
}
// assign result (the first solved will make the call to the DB)
for(int i = 0; i < customers.Length; i++)
{
customer.SomeValue = ((QueryFutureValue<SomeValueType>)futureQueries[i]).Value;
}
answered Nov 16 '18 at 14:13
Jonathan MagnanJonathan Magnan
6,01021334
add a comment |
You need first to generate all "QueryFuture" queries then you can use them.
So two loop should make it works.
var futureQueries = new List<BaseQueryFuture>();
// create all query futures
for(int i = 0; i < customers.Length; i++)
{
futureQueries.Add(ctx.SomeDatabaseTable.Where(myCondition).FutureValue());
}
// assign result (the first solved will make the call to the DB)
for(int i = 0; i < customers.Length; i++)
{
customer.SomeValue = ((QueryFutureValue<SomeValueType>)futureQueries[i]).Value;
}
answered Nov 16 '18 at 14:13
Jonathan MagnanJonathan Magnan
6,01021334
You need first to generate all "QueryFuture" queries then you can use them.
So two loop should make it works.
var futureQueries = new List<BaseQueryFuture>();
// create all query futures
for(int i = 0; i < customers.Length; i++)
{
futureQueries.Add(ctx.SomeDatabaseTable.Where(myCondition).FutureValue());
}
// assign result (the first solved will make the call to the DB)
for(int i = 0; i < customers.Length; i++)
{
customer.SomeValue = ((QueryFutureValue<SomeValueType>)futureQueries[i]).Value;
}
answered Nov 16 '18 at 14:13
Jonathan MagnanJonathan Magnan
6,01021334
answered Nov 16 '18 at 14:13
Jonathan MagnanJonathan Magnan
6,01021334
answered Nov 16 '18 at 14:13
Jonathan MagnanJonathan Magnan
6,01021334
answered Nov 16 '18 at 14:13
Jonathan MagnanJonathan Magnan
6,01021334
6,01021334
add a comment |
add a comment |
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