public void TestFeatureClassBag()
{
//Arrange
double d;
int length = (int)1e3;
List <MyFieldDef> fdefs = new List <MyFieldDef>();
fdefs.Add(new MyFieldDef(esriFieldType.esriFieldTypeString, "strFld"));
fdefs.Add(new MyFieldDef(esriFieldType.esriFieldTypeDouble, "doubleFld"));
IFieldsEdit flds = AOUtilities.GetBareMetalFields(esriGeometryType.esriGeometryPoint, 3857, fdefs);
List <MyFeature> pnts = new List <MyFeature>();
for (int j = 0; j < length; ++j)
{
pnts.Add(new MyFeature(esriFeatureType.esriFTSimple, esriGeometryType.esriGeometryPoint, new PointClass()
{
X = randomDouble(-180, 180), Y = randomDouble(-90, 90)
}, j, new List <object>()
{
j.ToString(), randomDouble(0, 100)
}));
}
//Act
using (IFeatureClassBag bag1 = new InMemoryFeatureClassBag("wname1", AOUtilities.GetInMemoryWorkspaceFactory()))
{
Assert.IsTrue(bag1.CreateFeatureClass("foo", flds, esriFeatureType.esriFTSimple, "Shape"));
Assert.IsTrue(bag1.AddFeatures("foo", pnts, fdefs.Count));
List <IFeature> ftrs = new List <IFeature>();
foreach (var f in bag1.GetFeatures("foo", false))
{
ftrs.Add(f);
}
object o1 = ftrs[0].get_Value(2);
object o2 = ftrs[0].get_Value(3);
object o3 = ftrs[length - 1].get_Value(2);
object o4 = ftrs[length - 1].get_Value(3);
//Assert
Assert.IsTrue(ftrs.Count == pnts.Count);
Assert.IsTrue(null != o1 && o1.ToString() == "0");
Assert.IsTrue(null != o3 && o3.ToString() == "999");
Assert.IsTrue(null != o2 && double.TryParse(o2.ToString(), out d));
Assert.IsTrue(null != o4 && double.TryParse(o4.ToString(), out d));
//Assert
//The following should fall through, GetFeatures actually returns nothing instead of an IEnumerable<IFeature>
foreach (var f in bag1.GetFeatures("bar", true))
{
continue;
}
}
IFeatureClassBag bag2 = new InMemoryFeatureClassBag("wname2", AOUtilities.GetInMemoryWorkspaceFactory());
IFeatureClassBag bag3 = new InMemoryFeatureClassBag("wname3", AOUtilities.GetInMemoryWorkspaceFactory());
bag2.Dispose();
bag3.Dispose();
}
public void FeatureClassBagRAMProfile()
{
//more detailed approach is necessary
//Arrange
//1,000,000 points will take roughly 500 MB RAM on my desktop
/*int length = (int)1e6;
* List<MyFeature> pnts = new List<MyFeature>();
* for (int i = 0; i < length; ++i)
* pnts.Add(new MyFeature(esriFeatureType.esriFTSimple, esriGeometryType.esriGeometryPoint, new PointClass() { X = randomDouble(-180, 180), Y = randomDouble(-90, 90) }));
*/
//Act
for (int i = 0; i < 5; ++i)
{
int length = (int)1e6;
List <MyFeature> pnts = new List <MyFeature>();
for (int j = 0; j < length; ++j)
{
pnts.Add(new MyFeature(esriFeatureType.esriFTSimple, esriGeometryType.esriGeometryPoint, new PointClass()
{
X = randomDouble(-180, 180), Y = randomDouble(-90, 90)
}, j, null));
}
using (InMemoryFeatureClassBag bag1 = new InMemoryFeatureClassBag("wname1", AOUtilities.GetInMemoryWorkspaceFactory()))
{
IFieldsEdit flds = AOUtilities.GetBareMetalFields(esriGeometryType.esriGeometryPoint, 3857, null);
Assert.IsTrue(bag1.CreateFeatureClass("foo", flds, esriFeatureType.esriFTSimple, "Shape"));
Assert.IsTrue(bag1.AddFeatures("foo", pnts, 0));
}
}
}