Trying to implement caching

numass-main/src/main/java/hep/dataforge/plotfit/PlotFitResultAction.java

@@ -45,7 +45,7 @@ import java.util.stream.StreamSupport;
 public class PlotFitResultAction extends OneToOneAction<FitState, FitState> {
 
     @Override
-    protected FitState execute(Context context, Reportable log, String name, Laminate metaData, FitState input) {
+    protected FitState execute(Reportable log, String name, Laminate metaData, FitState input) {
 
         PointSource data = input.getDataSet();
         if (!(input.getModel() instanceof XYModel)) {
@@ -66,7 +66,7 @@ public class PlotFitResultAction extends OneToOneAction<FitState, FitState> {
         Function<Double, Double> function = (x) -> model.getSpectrum().value(x, input.getParameters());
 
         XYPlotFrame frame = (XYPlotFrame) PlotsPlugin
-                .buildFrom(context).buildPlotFrame(getName(), name,
+                .buildFrom(getContext()).buildPlotFrame(getName(), name,
                 metaData.getNode("plot", Meta.empty()));
 
         PlottableXYFunction fit = new PlottableXYFunction("fit");

numass-main/src/main/java/inr/numass/NumassContext.java

@@ -26,7 +26,6 @@ import hep.dataforge.exceptions.DescriptorException;
 import hep.dataforge.maths.integration.GaussRuleIntegrator;
 import hep.dataforge.maths.integration.UnivariateIntegrator;
 import hep.dataforge.meta.Meta;
-import inr.numass.storage.SetDirectionUtility;
 import java.io.PrintWriter;
 
 /**
@@ -38,6 +37,7 @@ public class NumassContext extends Context {
     public static UnivariateIntegrator defaultIntegrator = new GaussRuleIntegrator(300);
     public static UnivariateIntegrator highDensityIntegrator = new GaussRuleIntegrator(500);
     
+
     public NumassContext(Context parent, Meta config) {
         super(parent, "numass", config);
         init();

numass-main/src/main/java/inr/numass/NumassPlugin.java

@@ -89,7 +89,7 @@ public class NumassPlugin extends BasicPlugin {
     }
 
     @Override
-    public void detach(Context context) {
+    public void detach() {
 
     }
 

numass-main/src/main/java/inr/numass/actions/AdjustErrorsAction.java

@@ -6,7 +6,6 @@
 package inr.numass.actions;
 
 import hep.dataforge.actions.OneToOneAction;
-import hep.dataforge.context.Context;
 import hep.dataforge.description.TypedActionDef;
 import hep.dataforge.io.reports.Reportable;
 import hep.dataforge.meta.Laminate;
@@ -27,7 +26,7 @@ import java.util.List;
 public class AdjustErrorsAction extends OneToOneAction<Table, Table> {
 
     @Override
-    protected Table execute(Context context, Reportable log, String name, Laminate meta, Table input) {
+    protected Table execute(Reportable log, String name, Laminate meta, Table input) {
         List<DataPoint> points = new ArrayList<>();
         for (DataPoint dp : input) {
             points.add(evalPoint(meta, dp));

numass-main/src/main/java/inr/numass/actions/DebunchAction.java

@@ -16,7 +16,6 @@
 package inr.numass.actions;
 
 import hep.dataforge.actions.OneToOneAction;
-import hep.dataforge.context.Context;
 import hep.dataforge.description.TypedActionDef;
 import hep.dataforge.description.ValueDef;
 import hep.dataforge.exceptions.ContentException;
@@ -41,7 +40,7 @@ import java.io.PrintWriter;
 public class DebunchAction extends OneToOneAction<RawNMFile, RawNMFile> {
 
     @Override
-    protected RawNMFile execute(Context context, Reportable log, String name, Laminate meta, RawNMFile source) throws ContentException {
+    protected RawNMFile execute(Reportable log, String name, Laminate meta, RawNMFile source) throws ContentException {
         log.report("File {} started", source.getName());
 
         int upper = meta.getInt("upperchanel", RawNMPoint.MAX_CHANEL);
@@ -67,7 +66,7 @@ public class DebunchAction extends OneToOneAction<RawNMFile, RawNMFile> {
         });
         log.report("File {} completed", source.getName());
 
-        log.getReport().print(new PrintWriter(buildActionOutput(context, name)));
+        log.getReport().print(new PrintWriter(buildActionOutput(name)));
 
 //        res.configure(source.meta());
         return res;

numass-main/src/main/java/inr/numass/actions/FindBorderAction.java

@@ -47,7 +47,7 @@ public class FindBorderAction extends OneToOneAction<NumassData, Table> {
     private UnivariateFunction normCorrection = e -> 1 + 13.265 * Math.exp(-e / 2343.4);
 
     @Override
-    protected Table execute(Context context, Reportable log, String name, Laminate meta, NumassData source) throws ContentException {
+    protected Table execute(Reportable log, String name, Laminate meta, NumassData source) throws ContentException {
         log.report("File {} started", source.getName());
 
         int upperBorder = meta.getInt("upper", 4094);
@@ -67,7 +67,7 @@ public class FindBorderAction extends OneToOneAction<NumassData, Table> {
         fill(dataBuilder, source, lowerBorder, upperBorder, referencePoint);
         Table bData = dataBuilder.build();
 
-        OutputStream stream = buildActionOutput(context, name);
+        OutputStream stream = buildActionOutput(name);
 
         ColumnedDataWriter.writeDataSet(stream, bData, String.format("%s : lower = %d upper = %d", name, lowerBorder, upperBorder));
 

numass-main/src/main/java/inr/numass/actions/MergeDataAction.java

@@ -50,11 +50,11 @@ public class MergeDataAction extends ManyToOneAction<Table, Table> {
 
     @Override
     @SuppressWarnings("unchecked")
-    protected List<DataNode<Table>> buildGroups(Context context, DataNode input, Meta actionMeta) {
+    protected List<DataNode<Table>> buildGroups(DataNode input, Meta actionMeta) {
-        Meta meta = inputMeta(context, input.meta(), actionMeta);
+        Meta meta = inputMeta(input.meta(), actionMeta);
         List<DataNode<Table>> groups;
         if (meta.hasValue("grouping.byValue")) {
-            groups = super.buildGroups(context, input, actionMeta);
+            groups = super.buildGroups(input, actionMeta);
         } else {
             groups = GroupBuilder.byValue(MERGE_NAME, meta.getString(MERGE_NAME, "merge")).group(input);
         }
@@ -62,14 +62,14 @@ public class MergeDataAction extends ManyToOneAction<Table, Table> {
     }
 
     @Override
-    protected Table execute(Context context, Reportable log, String nodeName, Map<String, Table> data, Meta meta) {
+    protected Table execute(Reportable log, String nodeName, Map<String, Table> data, Meta meta) {
         Table res = mergeDataSets(nodeName, data.values());
         return new ListTable(res.getFormat(),res.sort("Uset", true));
     }
 
     @Override
-    protected void afterGroup(Context context, Reportable log, String groupName, Meta outputMeta, Table output) {
+    protected void afterGroup(Reportable log, String groupName, Meta outputMeta, Table output) {
-        OutputStream stream = buildActionOutput(context, groupName);
+        OutputStream stream = buildActionOutput(groupName);
         ColumnedDataWriter.writeDataSet(stream, output, outputMeta.toString());
     }
 

numass-main/src/main/java/inr/numass/actions/MonitorCorrectAction.java

@@ -53,7 +53,7 @@ public class MonitorCorrectAction extends OneToOneAction<Table, Table> {
     //FIXME remove from state
 
     @Override
-    protected Table execute(Context context, Reportable log, String name, Laminate meta, Table sourceData) throws ContentException {
+    protected Table execute(Reportable log, String name, Laminate meta, Table sourceData) throws ContentException {
 
         double monitor = meta.getDouble("monitorPoint", Double.NaN);
 
@@ -144,7 +144,7 @@ public class MonitorCorrectAction extends OneToOneAction<Table, Table> {
 //        }
         Table data = new ListTable(dataList);
 
-        OutputStream stream = buildActionOutput(context, name);
+        OutputStream stream = buildActionOutput(name);
 
         ColumnedDataWriter.writeDataSet(stream, data, head);
 
@@ -152,15 +152,15 @@ public class MonitorCorrectAction extends OneToOneAction<Table, Table> {
     }
 
     @Override
-    protected void afterAction(Context context, String name, Table res, Laminate meta) {
+    protected void afterAction(String name, Table res, Laminate meta) {
-        printMonitorData(context, meta);
+        printMonitorData(meta);
-        super.afterAction(context, name, res, meta);
+        super.afterAction(name, res, meta);
     }
 
-    private void printMonitorData(Context context, Meta meta) {
+    private void printMonitorData(Meta meta) {
         if (!monitorPoints.isEmpty()) {
             String monitorFileName = meta.getString("monitorFile", "monitor");
-            OutputStream stream = buildActionOutput(context, monitorFileName);
+            OutputStream stream = buildActionOutput(monitorFileName);
             ListTable data = new ListTable(monitorPoints);
             ColumnedDataWriter.writeDataSet(stream, data.sort("Timestamp", true), "Monitor points", monitorNames);
         }

numass-main/src/main/java/inr/numass/actions/PileupSimulationAction.java

@@ -31,7 +31,7 @@ import java.util.Map;
 public class PileupSimulationAction extends OneToOneAction<NumassData, Map<String, NumassData>> {
 
     @Override
-    protected Map<String, NumassData> execute(Context context, Reportable log, String name, Laminate inputMeta, NumassData input) {
+    protected Map<String, NumassData> execute(Reportable log, String name, Laminate inputMeta, NumassData input) {
         int lowerChannel = inputMeta.getInt("lowerChannel", 1);
         int upperChannel = inputMeta.getInt("upperChannel", RawNMPoint.MAX_CHANEL - 1);
 

numass-main/src/main/java/inr/numass/actions/PrepareDataAction.java

@@ -16,7 +16,6 @@
 package inr.numass.actions;
 
 import hep.dataforge.actions.OneToOneAction;
-import hep.dataforge.context.Context;
 import hep.dataforge.description.TypedActionDef;
 import hep.dataforge.description.ValueDef;
 import hep.dataforge.exceptions.ContentException;
@@ -71,7 +70,7 @@ public class PrepareDataAction extends OneToOneAction<NumassData, Table> {
     }
 
     @Override
-    protected ListTable execute(Context context, Reportable log, String name, Laminate meta, NumassData dataFile) {
+    protected ListTable execute(Reportable log, String name, Laminate meta, NumassData dataFile) {
 //        log.report("File %s started", dataFile.getName());
 
         int upper = meta.getInt("upperWindow", RawNMPoint.MAX_CHANEL - 1);
@@ -131,7 +130,7 @@ public class PrepareDataAction extends OneToOneAction<NumassData, Table> {
 
         ListTable data = new ListTable(format, dataList);
 
-        OutputStream stream = buildActionOutput(context, name);
+        OutputStream stream = buildActionOutput(name);
 
         ColumnedDataWriter.writeDataSet(stream, data, head);
 //        log.logString("File %s completed", dataFile.getName());

numass-main/src/main/java/inr/numass/actions/ReadNumassDataAction.java

@@ -42,19 +42,19 @@ import inr.numass.storage.RawNMFile;
 public class ReadNumassDataAction extends OneToOneAction<Binary, NMFile> {
 
     @Override
-    protected NMFile execute(Context context, Reportable log, String name, Laminate meta, Binary source) throws ContentException {
+    protected NMFile execute(Reportable log, String name, Laminate meta, Binary source) throws ContentException {
 //        log.logString("File '%s' started", source.getName());
         RawNMFile raw = getNumassData(source, meta);
         if (meta.getBoolean("paw", false)) {
-            raw.generatePAW(buildActionOutput(context, name + ".paw"));
+            raw.generatePAW(buildActionOutput(name + ".paw"));
         }
 
         if (meta.getNodeNames(false).contains("debunch")) {
             DebunchAction debunch = new DebunchAction();
             Laminate laminate = new Laminate(meta.getNode("debunch"))
-                    .setValueContext(context)
+                    .setValueContext(getContext())
                     .setDescriptor(debunch.getDescriptor());
-            raw = debunch.execute(context, log, name, laminate, raw);
+            raw = debunch.execute(log, name, laminate, raw);
         }
 
         NMFile result = new NMFile(raw);

numass-main/src/main/java/inr/numass/actions/ReadNumassStorageAction.java

@@ -6,7 +6,6 @@
 package inr.numass.actions;
 
 import hep.dataforge.actions.GenericAction;
-import hep.dataforge.context.Context;
 import hep.dataforge.context.DFProcess;
 import hep.dataforge.context.ProcessManager.Callback;
 import hep.dataforge.data.Data;
@@ -35,7 +34,7 @@ import inr.numass.storage.SetDirectionUtility;
 public class ReadNumassStorageAction extends GenericAction<Void, NumassData> {
 
     @Override
-    public DataNode<NumassData> run(Context context, DataNode<Void> data, Meta actionMeta) {
+    public DataNode<NumassData> run(DataNode<Void> data, Meta actionMeta) {
         try {
             NumassStorage storage = NumassStorage.buildNumassRoot(actionMeta.getString("uri"), true, false);
             DataFilter filter = new DataFilter().configure(actionMeta);
@@ -43,45 +42,46 @@ public class ReadNumassStorageAction extends GenericAction<Void, NumassData> {
             boolean forwardOnly = actionMeta.getBoolean("forwardOnly", false);
             boolean reverseOnly = actionMeta.getBoolean("reverseOnly", false);
 
-            DFProcess<DataSet<NumassData>> process = context.processManager().<DataSet<NumassData>>post(getName(), (Callback callback) -> {
+            DFProcess<DataSet<NumassData>> process = getContext().processManager()
-                //FIXME remove in later revisions
+                    .<DataSet<NumassData>>post(getName(), (Callback callback) -> {
-                SetDirectionUtility.load(context);
+                        //FIXME remove in later revisions
+                        SetDirectionUtility.load(getContext());
 
-                DataSet.Builder<NumassData> builder = DataSet.builder(NumassData.class);
+                        DataSet.Builder<NumassData> builder = DataSet.builder(NumassData.class);
-                callback.setMaxProgress(StorageUtils.loaderStream(storage).count());
+                        callback.setMaxProgress(StorageUtils.loaderStream(storage).count());
-                StorageUtils.loaderStream(storage).forEach(pair -> {
+                        StorageUtils.loaderStream(storage).forEach(pair -> {
-                    Loader loader = pair.getValue();
+                            Loader loader = pair.getValue();
-                    if (loader instanceof NumassData) {
+                            if (loader instanceof NumassData) {
-                        NumassDataLoader nd = (NumassDataLoader) loader;
+                                NumassDataLoader nd = (NumassDataLoader) loader;
-                        Data<NumassData> datum = new StaticData<>(nd);
+                                Data<NumassData> datum = new StaticData<>(nd);
-                        if (filter.acceptData(pair.getKey(), datum)) {
+                                if (filter.acceptData(pair.getKey(), datum)) {
-                            boolean accept = true;
+                                    boolean accept = true;
-                            if (forwardOnly || reverseOnly) {
+                                    if (forwardOnly || reverseOnly) {
-                                boolean reversed = nd.isReversed();
+                                        boolean reversed = nd.isReversed();
-                                accept = (reverseOnly && reversed) || (forwardOnly && !reversed);
+                                        accept = (reverseOnly && reversed) || (forwardOnly && !reversed);
+                                    }
+                                    if (accept) {
+                                        builder.putData(pair.getKey(), datum);
+                                    }
+                                }
                             }
-                            if (accept) {
+                            callback.increaseProgress(1d);
-                                builder.putData(pair.getKey(), datum);
+                        });
-                            }
-                        }
-                    }
-                    callback.increaseProgress(1d);
-                });
 
-                if (actionMeta.getBoolean("loadLegacy", false)) {
+                        if (actionMeta.getBoolean("loadLegacy", false)) {
-                    logger().info("Loading legacy files");
+                            logger().info("Loading legacy files");
-                    storage.legacyFiles().forEach(nd -> {
+                            storage.legacyFiles().forEach(nd -> {
-                        Data<NumassData> datum = new StaticData<>(nd);
+                                Data<NumassData> datum = new StaticData<>(nd);
-                        if (filter.acceptData(nd.getName(), datum)) {
+                                if (filter.acceptData(nd.getName(), datum)) {
-                            builder.putData("legacy." + nd.getName(), datum);
+                                    builder.putData("legacy." + nd.getName(), datum);
+                                }
+                            });
                         }
+                        //FIXME remove in later revisions
+                        SetDirectionUtility.save(getContext());
+
+                        return builder.build();
                     });
-                }
-                //FIXME remove in later revisions
-                SetDirectionUtility.save(context);
-
-                return builder.build();
-            });
 
             return process.getTask().get();
         } catch (Exception ex) {

numass-main/src/main/java/inr/numass/actions/ShowEnergySpectrumAction.java

@@ -42,7 +42,7 @@ import java.util.stream.Collectors;
 public class ShowEnergySpectrumAction extends OneToOneAction<NumassData, Table> {
 
     @Override
-    protected Table execute(Context context, Reportable log, String name, Laminate inputMeta, NumassData input) {
+    protected Table execute(Reportable log, String name, Laminate inputMeta, NumassData input) {
         int binning = inputMeta.getInt("binning", 20);
         boolean normalize = inputMeta.getBoolean("normalize", true);
         List<NMPoint> points = input.getNMPoints();
@@ -85,14 +85,14 @@ public class ShowEnergySpectrumAction extends OneToOneAction<NumassData, Table>
             builder.row(mb.build());
         });
 
-        OutputStream out = buildActionOutput(context, name);
+        OutputStream out = buildActionOutput(name);
         Table table = builder.build();
 
         ColumnedDataWriter.writeDataSet(out, table, inputMeta.toString());
 
         if (inputMeta.hasNode("plot") || inputMeta.getBoolean("plot", false)) {
             XYPlotFrame frame = (XYPlotFrame) PlotsPlugin
-                    .buildFrom(context).buildPlotFrame(getName(), name,
+                    .buildFrom(getContext()).buildPlotFrame(getName(), name,
                     inputMeta.getNode("plot", Meta.empty()));
             fillDetectorData(valueMap).forEach(frame::add);
 

numass-main/src/main/java/inr/numass/actions/ShowLossSpectrumAction.java

@@ -16,7 +16,6 @@
 package inr.numass.actions;
 
 import hep.dataforge.actions.OneToOneAction;
-import hep.dataforge.context.Context;
 import hep.dataforge.datafitter.FitState;
 import hep.dataforge.datafitter.FitTaskResult;
 import hep.dataforge.datafitter.Param;
@@ -66,7 +65,7 @@ public class ShowLossSpectrumAction extends OneToOneAction<FitState, FitState> {
     private static final String[] names = {"X", "exPos", "ionPos", "exW", "ionW", "exIonRatio"};
 
     @Override
-    protected FitState execute(Context context, Reportable log, String name, Laminate meta, FitState input) {
+    protected FitState execute(Reportable log, String name, Laminate meta, FitState input) {
         ParamSet pars = input.getParameters();
         if (!pars.names().contains(names)) {
             LoggerFactory.getLogger(getClass()).error("Wrong input FitState. Must be loss spectrum fit.");
@@ -75,7 +74,7 @@ public class ShowLossSpectrumAction extends OneToOneAction<FitState, FitState> {
 
         UnivariateFunction scatterFunction;
         boolean calculateRatio = false;
-        XYPlotFrame frame = (XYPlotFrame) PlotsPlugin.buildFrom(context)
+        XYPlotFrame frame = (XYPlotFrame) PlotsPlugin.buildFrom(getContext())
                 .buildPlotFrame(getName(), name + ".loss",
                         new MetaBuilder("plot")
                         .setValue("plotTitle", "Differential scattering crossection for " + name)
@@ -103,12 +102,12 @@ public class ShowLossSpectrumAction extends OneToOneAction<FitState, FitState> {
             threshold = meta.getDouble("ionThreshold", 17);
             ionRatio = calcultateIonRatio(pars, threshold);
             log.report("The ionization ratio (using threshold {}) is {}", threshold, ionRatio);
-            ionRatioError = calultateIonRatioError(context, name, input, threshold);
+            ionRatioError = calultateIonRatioError(name, input, threshold);
             log.report("the ionization ration standard deviation (using threshold {}) is {}", threshold, ionRatioError);
         }
 
         if (meta.getBoolean("printResult", false)) {
-            PrintWriter writer = new PrintWriter(new OutputStreamWriter(buildActionOutput(context, name), Charset.forName("UTF-8")));
+            PrintWriter writer = new PrintWriter(new OutputStreamWriter(buildActionOutput(name), Charset.forName("UTF-8")));
 //            writer.println("*** FIT PARAMETERS ***");
             input.print(writer);
 //            for (Param param : pars.getSubSet(names).getParams()) {
@@ -204,14 +203,14 @@ public class ShowLossSpectrumAction extends OneToOneAction<FitState, FitState> {
         return exProb / ionProb;
     }
 
-    public double calultateIonRatioError(Context context, String dataNeme, FitState state, double threshold) {
+    public double calultateIonRatioError(String dataNeme, FitState state, double threshold) {
         ParamSet parameters = state.getParameters().getSubSet(new String[]{"exPos", "ionPos", "exW", "ionW", "exIonRatio"});
         NamedMatrix covariance = state.getCovariance();
-        return calultateIonRatioError(context, dataNeme, parameters, covariance, threshold);
+        return calultateIonRatioError(dataNeme, parameters, covariance, threshold);
     }
 
     @SuppressWarnings("Unchecked")
-    public double calultateIonRatioError(Context context, String name, NamedValueSet parameters, NamedMatrix covariance, double threshold) {
+    public double calultateIonRatioError(String name, NamedValueSet parameters, NamedMatrix covariance, double threshold) {
         int number = 10000;
 
         double[] res = new GaussianParameterGenerator(parameters, covariance)
@@ -223,7 +222,7 @@ public class ShowLossSpectrumAction extends OneToOneAction<FitState, FitState> {
 
         Histogram hist = new Histogram(0.3, 0.5, 0.002);
         hist.fill(res);
-        XYPlotFrame frame = (XYPlotFrame) PlotsPlugin.buildFrom(context)
+        XYPlotFrame frame = (XYPlotFrame) PlotsPlugin.buildFrom(getContext())
                 .buildPlotFrame(getName(), name + ".ionRatio",
                         new MetaBuilder("plot").setValue("plotTitle", "Ion ratio Distribution for " + name)
                 );

numass-main/src/main/java/inr/numass/actions/SlicingAction.java

@@ -46,7 +46,7 @@ public class SlicingAction extends OneToOneAction<NMFile, NMFile> {
     }
 
     @Override
-    protected NMFile execute(Context context, Reportable log, String name, Laminate meta, NMFile source) throws ContentException {
+    protected NMFile execute(Reportable log, String name, Laminate meta, NMFile source) throws ContentException {
         boolean normalize;
         Map<String, Pair<Integer, Integer>> slicingConfig;
 
@@ -70,7 +70,7 @@ public class SlicingAction extends OneToOneAction<NMFile, NMFile> {
 
         SlicedData sData = new SlicedData(source, slicingConfig, normalize);
 
-        OutputStream stream = buildActionOutput(context, name);
+        OutputStream stream = buildActionOutput(name);
 
         ColumnedDataWriter.writeDataSet(stream, sData, null);
 

numass-main/src/main/java/inr/numass/actions/SummaryAction.java

@@ -46,11 +46,11 @@ public class SummaryAction extends ManyToOneAction<FitState, Table> {
 
     @Override
     @SuppressWarnings("unchecked")
-    protected List<DataNode<Table>> buildGroups(Context context, DataNode input, Meta actionMeta) {
+    protected List<DataNode<Table>> buildGroups(DataNode input, Meta actionMeta) {
-        Meta meta = inputMeta(context, input.meta(), actionMeta);
+        Meta meta = inputMeta(input.meta(), actionMeta);
         List<DataNode<Table>> groups;
         if (meta.hasValue("grouping.byValue")) {
-            groups = super.buildGroups(context, input, actionMeta);
+            groups = super.buildGroups(input, actionMeta);
         } else {
             groups = GroupBuilder.byValue(SUMMARY_NAME, meta.getString(SUMMARY_NAME, "summary")).group(input);
         }
@@ -58,7 +58,7 @@ public class SummaryAction extends ManyToOneAction<FitState, Table> {
     }
 
     @Override
-    protected Table execute(Context context, Reportable log, String nodeName, Map<String, FitState> input, Meta meta) {
+    protected Table execute(Reportable log, String nodeName, Map<String, FitState> input, Meta meta) {
         String[] parNames = meta.getStringArray("parnames");
         String[] names = new String[2 * parNames.length + 2];
         names[0] = "file";
@@ -108,11 +108,11 @@ public class SummaryAction extends ManyToOneAction<FitState, Table> {
     }
 
     @Override
-    protected void afterGroup(Context context, Reportable log, String groupName, Meta outputMeta, Table output) {
+    protected void afterGroup(Reportable log, String groupName, Meta outputMeta, Table output) {
-        OutputStream stream = buildActionOutput(context, groupName);
+        OutputStream stream = buildActionOutput(groupName);
         ColumnedDataWriter.writeDataSet(stream, output, groupName);
 
-        super.afterGroup(context, log, groupName, outputMeta, output);
+        super.afterGroup(log, groupName, outputMeta, output);
     }
 
 }

numass-main/src/main/java/inr/numass/tasks/PrepareTask.java

@@ -0,0 +1,89 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package inr.numass.tasks;
+
+import hep.dataforge.actions.Action;
+import hep.dataforge.context.Context;
+import hep.dataforge.context.ProcessManager;
+import hep.dataforge.data.DataNode;
+import hep.dataforge.data.DataTree;
+import hep.dataforge.meta.Meta;
+import hep.dataforge.meta.Template;
+import hep.dataforge.tables.Table;
+import hep.dataforge.workspace.GenericTask;
+import hep.dataforge.workspace.TaskModel;
+import hep.dataforge.workspace.TaskState;
+import inr.numass.actions.MergeDataAction;
+import inr.numass.actions.PrepareDataAction;
+import inr.numass.actions.ReadNumassStorageAction;
+import inr.numass.storage.NumassData;
+
+/**
+ *
+ * @author Alexander Nozik
+ */
+public class PrepareTask extends GenericTask {
+
+    /*
+    	<action type="readStorage" uri="file://D:\Work\Numass\data\2016_04\T2_data\">
+		<include pattern="Fill_2*"/>
+		<exclude pattern="Fill_2_4_Empty*"/>
+		<exclude pattern="Fill_2_1.set_1*"/>
+		<exclude pattern="Fill_2_1.set_2*"/>
+		<exclude pattern="Fill_2_1.set_3*"/>
+		<exclude pattern="Fill_2_1.set_4*"/>
+	</action>
+	<action type="prepareData" lowerWindow="500" upperWindow="1700" deadTime="4.9534e-6 + 1.51139e-10*U">
+		<underflow function = "1.0 + 15.216 * Math.exp( - U / 2477.46 )" threshold = "14000"/>
+	</action>
+	<action type="monitor" monitorPoint="${numass.monitorPoint}" monitorFile="${numass.setName}_monitor"/>
+	<action type="merge" mergeName="${numass.setName}"/>
+     */
+    @Override
+    @SuppressWarnings("unchecked")
+    protected TaskState transform(ProcessManager.Callback callback, Context context, TaskState state, Meta config) {
+        //acquiring initial data. Data node could not be empty
+        Meta dataMeta = Template.compileTemplate(config.getNode("data"), config);
+        DataNode<NumassData> data = runAction(new ReadNumassStorageAction(), callback, context, DataNode.empty(), dataMeta);
+        state.setData("data", data);
+        //preparing table data
+        Meta prepareMeta = Template.compileTemplate(config.getNode("prepare"), config);
+        DataNode<Table> tables = runAction(new PrepareDataAction(), callback, context, data, prepareMeta);
+        state.setData("prepare", tables);
+        //merging if needed
+        if (config.hasNode("merge")) {
+            DataTree.Builder resultBuilder = DataTree.builder(Table.class);
+            tables.dataStream().forEach(pair -> resultBuilder.putData(pair.getKey(), pair.getValue()));
+            config.getNodes("merge").forEach(mergeNode -> {
+                Meta mergeMeta = Template.compileTemplate(mergeNode, config);
+                DataNode<Table> mergeData = runAction(new MergeDataAction(), callback, context, tables, mergeMeta);
+                mergeData.dataStream().forEach(pair -> {
+                    resultBuilder.putData("merge." + pair.getKey(), pair.getValue());
+                });
+            });
+        } else {
+            state.finish(tables);
+        }
+        return state;
+    }
+
+    private <T, R> DataNode<R> runAction(Action<T, R> action, ProcessManager.Callback callback, Context context, DataNode<T> data, Meta meta) {
+        return action.withContext(context).withParentProcess(callback.processName()).run(data, meta);
+    }
+
+    @Override
+    public void validate(TaskModel model) {
+        if (!model.meta().hasNode("data")) {
+
+        }
+    }
+
+    @Override
+    public String getName() {
+        return "numass.prepare";
+    }
+
+}

numass-main/src/main/java/inr/numass/test/TestLazyData.java

@@ -0,0 +1,41 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package inr.numass.test;
+
+import hep.dataforge.actions.ActionController;
+import java.util.concurrent.CompletableFuture;
+
+/**
+ *
+ * @author Alexander Nozik
+ */
+public class TestLazyData {
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        ActionController lock = new ActionController();
+        CompletableFuture<String> future = lock.hold(() -> {
+            System.out.println(" I am initialized");
+            return "abcd";
+        });
+        future = future.<String>thenCompose((String res) -> CompletableFuture.supplyAsync(() -> {
+            System.out.println(" I am capitalized");
+            return res.toUpperCase();
+        }));
+        future = future.handleAsync((res, err) -> {
+            System.out.println(" I am handled");
+            return "handled " + res;
+        });
+        System.out.println("Releasing hold");
+        lock.release();
+
+//        dat1.getInFuture().thenRunAsync(() -> System.out.println(" I am finished"));
+//        dat1.getInFuture().thenAcceptAsync((res) -> System.out.println(" I am finished"));
+    }
+
+}

numass-main/src/main/java/inr/numass/workbench/NumassWorkbenchController.java

@@ -159,6 +159,7 @@ public class NumassWorkbenchController implements Initializable, StagePaneHolder
         buildContextPane();
         context.getReport().addReportListener(new FXReportListener(logPane));
         
+
         // display plots iside workbench
         PlotsPlugin.buildFrom(context).setPlotHolderDelegate(this);
     }

numass-storage/src/main/java/inr/numass/storage/SetDirectionUtility.java

@@ -41,6 +41,7 @@ public class SetDirectionUtility {
         return new File(context.io().getTmpDirectory(), FILE_NAME);
     }
 
+    @SuppressWarnings("unchecked")
     public static synchronized void load(Context context) {
         context.getLogger().info("Loading set direction utility");
         File file = cacheFile(context);