public static IOutputNodeBuilderContext <NodeOutputWithFilePath> BZip2Files(
this IOutputNodeBuilderContext <NodeOutputWithFilePath> builder)
{
var node = new BZip2FileCompressionNode();
return(builder.Continue(ctx => node));
}
public static IOutputNodeBuilderContext <Row> Classify(this IOutputNodeBuilderContext <Row> builder,
string outputColumn, Action <GenericClassificationNode <Row, string, object> > cat)
{
var node = new GenericClassificationNode <Row, string, object>(row => row[outputColumn]);
cat(node);
return(builder.Continue(ctx => node));
}
public static IOutputNodeBuilderContext <NodeOutputWithFilePath> GZipFiles(
this IOutputNodeBuilderContext <NodeOutputWithFilePath> builder, Action <GZipFileCompressionNode> cfg)
{
var node = new GZipFileCompressionNode();
cfg(node);
return(builder.Continue(ctx => node));
}
public static IOutputNodeBuilderContext <Row> GenerateRowNumbers(this IOutputNodeBuilderContext <Row> builder,
string idColumnName)
{
return(builder.Continue(ctx => new GenericTransformationNode <Row>((state, row) =>
{
if (!state.ContainsKey(idColumnName))
{
state[idColumnName] = 0;
}
else
{
state[idColumnName] = (int)state[idColumnName] + 1;
}
//var newRow = row.Copy();
//newRow[idColumnName] = state[idColumnName];
//return newRow;
var newRow = ctx.ObjectPool.Borrow <Row>();
row.CopyTo(newRow);
newRow[idColumnName] = state[idColumnName];
ctx.ObjectPool.Return(row);
return newRow;
})));
}
public static IOutputNodeBuilderContext <TOut> Map <TIn, TOut>(this IOutputNodeBuilderContext <TIn> builder, Func <TIn, TOut, TOut> map)
where TIn : class, INodeOutput <TIn>, new()
where TOut : class, INodeOutput <TOut>, new()
{
return(builder.Continue(ctx => new GenericMappingNode <TIn, TOut>(map)));
}
public static IOutputNodeBuilderContext <T> Filter <T>(this IOutputNodeBuilderContext <T> builder, Func <T, bool> predicate)
where T : class, INodeOutput <T>, new()
{
return(builder.Continue(ctx => new GenericFilterNode <T>(predicate)));
}
public static IOutputNodeBuilderContext <T> Transform <T>(this IOutputNodeBuilderContext <T> builder, Func <EtlPipelineContext, T, T> transform)
where T : class, INodeOutput <T>, new()
{
return(builder.Continue(ctx => new GenericTransformationNode <T>((state, row) => transform(ctx, row))));
}
