public override object Transform(EngineIntrinsics engineIntrinsics, object inputData)
{
if (null == inputData)
{
return(inputData);
}
var inputObject = inputData.ToPSObject().BaseObject;
if (!(inputObject is ScriptBlock))
{
return(inputData);
}
var script = inputObject as ScriptBlock;
var dataSource = new PowerShellDataSource
{
Name = script.ToString(),
ScriptBlock = script.ToString(),
Trigger = new ImmediateTrigger()
};
//TODO: add datasource to datasources: drive
var drive = engineIntrinsics.InvokeCommand.InvokeScript("get-psdrive datasources") as IDriveOf <IPowerShellDataSource>;
drive.Add(dataSource);
return(dataSource);
}
public override object Transform(EngineIntrinsics engineIntrinsics, object inputData)
{
if (null == inputData)
{
return inputData;
}
var inputObject = inputData.ToPSObject().BaseObject;
if (!(inputObject is ScriptBlock))
{
return inputData;
}
var script = inputObject as ScriptBlock;
var dataSource = new PowerShellDataSource
{
Name = script.ToString(),
ScriptBlock = script.ToString(),
Trigger = new ImmediateTrigger()
};
//TODO: add datasource to datasources: drive
var drive = engineIntrinsics.InvokeCommand.InvokeScript("get-psdrive datasources") as IDriveOf<IPowerShellDataSource>;
drive.Add(dataSource);
return dataSource;
}
public void SupportsNewItem()
{
var s = @"new-item datasources:/test1 -value { @(1,2,3,4) }";
PowerShellDataSource item = Execute <PowerShellDataSource>(s);
Assert.NotNull(item);
}
public void AllRecordsCountPropertyChangeNotifiedByViewModel()
{
var vm = new ViewModel();
int called = 0;
vm.PropertyChanged += (s, a) => { if (a.PropertyName == "AllRecordsCount")
{
++called;
}
};
var dataSource = new PowerShellDataSource
{
ScriptBlock = "1 | select -exp ASDF"
};
vm.DataSource = dataSource;
Assert.Equal(0, vm.AllRecordsCount);
called = 0;
vm.DataSource.Trigger = new ImmediateTrigger();
dataSource.ScriptComplete.WaitOne();
Assert.Equal(1, vm.AllRecordsCount);
Assert.True(1 == called, "Failed to raise property notification change event for AllRecordsCount");
}
public void DefaultTriggerForNewItemIsImmediate()
{
var s = @"new-item datasources:/test1 -value { @(1,2,3,4) }";
PowerShellDataSource item = Execute <PowerShellDataSource>(s);
Assert.NotNull(item);
Assert.IsType <ImmediateTrigger>(item.Trigger);
}
public void CanAssignTriggerByObject()
{
var s = @"$trigger = new-item triggers:/trigger0 -manual; new-item datasources:/test1 -trigger $trigger -value { get-random }";
PowerShellDataSource item = Execute <PowerShellDataSource>(s);
Assert.NotNull(item);
Assert.NotNull(item.Trigger);
Assert.Equal("trigger0", item.Trigger.Name);
Assert.Equal(0, item.Data.Count);
Assert.IsType <ManualTrigger>(item.Trigger);
}
public void DataSourceExecutesScriptOnImmediateTriggerAttach()
{
PowerShellDataSource item = new PowerShellDataSource {
Name = "Item", ScriptBlock = "@(0,1,2,3)"
};
Assert.NotNull(item);
Assert.Equal(0, item.Data.Count);
item.Trigger = new ImmediateTrigger();
item.ScriptComplete.WaitOne(500);
Assert.Equal(4, item.Data.Count);
}
public void DataSourceExecutesScriptOnManualTriggerPull()
{
PowerShellDataSource item = new PowerShellDataSource {
Name = "Item", ScriptBlock = "@(0,1,2,3)"
};
Assert.NotNull(item);
Assert.Equal(0, item.Data.Count);
var trigger = new ManualTrigger();
item.Trigger = trigger;
Assert.Equal(0, item.Data.Count);
trigger.RaiseTrigger();
item.ScriptComplete.WaitOne(500);
Assert.Equal(4, item.Data.Count);
}
public void AllRecordsCountUpdatedInSingleDataSourceViewModel()
{
var vm = new ViewModel();
var dataSource = new PowerShellDataSource
{
ScriptBlock = "1 | select -exp ASDF"
};
vm.DataSource = dataSource;
Assert.Equal(0, vm.AllRecordsCount);
Assert.Equal(dataSource.AllRecords.Count, vm.AllRecordsCount);
vm.DataSource.Trigger = new ImmediateTrigger();
dataSource.ScriptComplete.WaitOne();
Assert.Equal(1, vm.AllRecordsCount);
Assert.Equal(dataSource.AllRecords.Count, vm.AllRecordsCount);
}
public void AllRecordsCountUpdatedInSingleDataSourceViewModel()
{
var vm = new ViewModel();
var dataSource = new PowerShellDataSource
{
ScriptBlock = "1 | select -exp ASDF"
};
vm.DataSource = dataSource;
Assert.Equal(0, vm.AllRecordsCount);
Assert.Equal(dataSource.AllRecords.Count, vm.AllRecordsCount);
vm.DataSource.Trigger = new ImmediateTrigger();
dataSource.ScriptComplete.WaitOne();
Assert.Equal(1, vm.AllRecordsCount);
Assert.Equal(dataSource.AllRecords.Count, vm.AllRecordsCount);
}
public void AllRecordsCountPropertyChangeNotifiedByViewModel()
{
var vm = new ViewModel();
int called = 0;
vm.PropertyChanged += (s, a) => { if (a.PropertyName == "AllRecordsCount") ++called; };
var dataSource = new PowerShellDataSource
{
ScriptBlock = "1 | select -exp ASDF"
};
vm.DataSource = dataSource;
Assert.Equal(0, vm.AllRecordsCount);
called = 0;
vm.DataSource.Trigger = new ImmediateTrigger();
dataSource.ScriptComplete.WaitOne();
Assert.Equal(1, vm.AllRecordsCount);
Assert.True( 1 == called, "Failed to raise property notification change event for AllRecordsCount");
}
public IPathValue NewItem(IProviderContext context, string path, string itemTypeName, object newItemValue)
{
var parameters = context.DynamicParameters as DataSourceNewItemParameters;
var name = path;
var script = ConvertToScript(newItemValue);
if (null == script)
{
throw new ArgumentException("new item value must be a script block or string", "newItemValue");
}
var dataSource = new PowerShellDataSource {
Name = name, ScriptBlock = script, UseDispatcher = true
};
if (null != parameters)
{
if (parameters.MaxItemCount.HasValue)
{
dataSource.DataCollectionMaxSize = parameters.MaxItemCount.Value;
}
if (parameters.NoDispatcher.IsPresent)
{
dataSource.UseDispatcher = false;
}
if (null != parameters.Args)
{
string propertyName = null;
var specs = parameters.Args.ToHashtable();
foreach (object key in specs.Keys)
{
var value = specs[key];
IScaleDescriptor descriptor = value as IScaleDescriptor;
if (null == descriptor)
{
if (value is Array)
{
descriptor = new ScaleDescriptor((object[])value);
}
else
{
descriptor = new ScaleDescriptor(value.ToString());
}
}
dataSource.Scales.Add(
new ScaleDescriptorAssignment
{
Scale = descriptor,
PropertyName = key.ToString()
}
);
}
}
}
ITrigger trigger = Singleton <ImmediateTrigger> .Instance;
if (null != parameters && null != parameters.Trigger)
{
trigger = parameters.Trigger;
}
dataSource.Trigger = trigger;
_drive.Add(dataSource);
return(new PathValue(dataSource, name, true));
}
