Double items

[.ben]

I'm exporting a service as a webservice using the spring framework and consuming it on the client again using spring.

The items I'm returning are of the class below:



public class SovPeriod
{

private List<int> m_advertIdsMaxPrice;
private List<int> m_advertIdsMinPrice;
private decimal m_minPrice;
private decimal m_maxPrice;
private Period m_period;
private decimal m_sov;
private decimal m_count;
private decimal m_avgPrice;

public SovPeriod()
{
//m_advertIdsMaxPrice = new List<int>();
//m_advertIdsMinPrice = new List<int>();
}

public decimal Sov
{
get
{
return m_sov;
}
set
{
m_sov = value;
}
}

public decimal Count
{
get
{
return m_count;
}
set
{
m_count = value;
}
}

public decimal AvgPrice
{
get
{
return m_avgPrice;
}
set
{
m_avgPrice = value;
}
}

public Period Period
{
get
{
return m_period;
}
set
{
m_period = value;
}
}

public decimal MaxPrice
{
get
{
return m_maxPrice;
}
set
{
m_maxPrice = value;
}
}
public decimal MinPrice
{
get
{
return m_minPrice;
}
set
{
m_minPrice = value;
}
}

public List<int> AdvertIdsMaxPrice
{
get
{
return m_advertIdsMaxPrice;
}
set
{
m_advertIdsMaxPrice = value;
}
}

public List<int> AdvertIdsMinPrice
{
get
{
return m_advertIdsMinPrice;
}
set
{
m_advertIdsMinPrice = value;
}
}
}

public class SovItem
{
private string m_name;
public List<SovPeriod> m_sovCalculations;
public List<SovItem> m_childSovItems;

public SovItem()
{
//m_name = string.Empty;
//m_sovCalculations = new List<SovPeriod>();
//m_childSovItems = new List<SovItem>();
}

public string Name
{
get
{
return m_name;
}
set
{
m_name = value;
}
}

public List<SovPeriod> SovCalculations
{
get
{
return m_sovCalculations;
}
set
{
m_sovCalculations = value;
}
}

public List<SovItem> ChildSovItems
{
get
{
return m_childSovItems;
}
set
{
m_childSovItems = value;
}
}

}




The webservice returns an array of SovItems.

Now comes the fun part.
On the server the array looks like this:

aParentSovItem1
---aChild1OfParent1
---aChild2OfParent1
aParentSovItem2
---aChild3ofParent2
---aChild4ofParent2

when this array arrives on the client, it looks like this:

aParentSovItem1
---aChild1OfParent1
---aChild2OfParent1
---aChild1OfParent1
---aChild2OfParent1
aParentSovItem2
---aChild3ofParent2
---aChild4ofParent2
---aChild3ofParent2
---aChild4ofParent2

No clue how to solve this.

[.ben]

I've overriden Equals and Gethascode to see if it had something to do with that but I still receive this strange behaviour.

[Erich Eichinger]

Hi,

Maybe you try using an old ArrayList instead of List<T> to see if maybe the List<T> implementation is faulty?

Otherwise I don't have a clue what's going on here...

sorry,
Erich

[.ben]

Yup, I changed the list to an old-fashioned array (arraylist would have broken too much ) and the returned list is now correct.

[Aleks Seovic]

Really wierd... Let me know if you figure out what's going on when you use generic list. Can you try to generate client-side proxy using VS.NET and see if you still get the same behavior? That way we can at least nail down whether it's our or Microsoft's issue...

Thanks,

Aleks

[.ben]

I'm trying to recreate the behaviour in a sample app, without any luck(?) so far.

[javajunky]

Just thought I'd mention, I'm exposing Web Services that return List<T> elements all over the place, Spring.Net doesn't have a problem with it for me!

(FWIW: It does have a problem with IList<T> or anything that implements IDictionary<T,U>)

I'm using a recent nightly build.