limit the number of plots

pdb-ui/src/main/java/org/lucares/pdbui/PdbController.java

@@ -7,6 +7,7 @@ import java.util.Collections;
 import java.util.List;
 
 import org.lucares.ludb.Proposal;
+import org.lucares.pdb.plot.api.PlotSettings;
 import org.lucares.pdbui.domain.AutocompleteProposal;
 import org.lucares.pdbui.domain.AutocompleteProposalByValue;
 import org.lucares.pdbui.domain.AutocompleteResponse;
@@ -46,12 +47,10 @@ public class PdbController implements HardcodedValues, CollectionUtils {
 	PlotResponse createPlot(@RequestBody final PlotRequest request) {
 
 		try {
-			final String query = request.getQuery();
-			final int height = request.getHeight();
-			final int width = request.getWidth();
 
-			System.out.println(query);
-			final File image = plotter.plot(query, height, width, request.getGroupBy());
+			final PlotSettings plotSettings = PlotSettingsTransformer.toSettings(request);
+
+			final File image = plotter.plot(plotSettings);
 
 			final Path relativeImagePath = plotter.getOutputDir().relativize(image.toPath());
 			return new PlotResponse(WEB_IMAGE_OUTPUT_PATH + "/" + relativeImagePath.toString());

pdb-ui/src/main/java/org/lucares/pdbui/PlotSettingsTransformer.java

@@ -0,0 +1,35 @@
+package org.lucares.pdbui;
+
+import org.lucares.pdb.plot.api.Limit;
+import org.lucares.pdb.plot.api.PlotSettings;
+import org.lucares.pdbui.domain.LimitBy;
+import org.lucares.pdbui.domain.PlotRequest;
+
+class PlotSettingsTransformer {
+	static PlotSettings toSettings(final PlotRequest request) {
+
+		final PlotSettings result = new PlotSettings();
+
+		result.setQuery(request.getQuery());
+		result.setGroupBy(request.getGroupBy());
+		result.setHeight(request.getHeight());
+		result.setWidth(request.getWidth());
+		result.setLimit(request.getLimit());
+		result.setLimitBy(toLimit(request.getLimitBy()));
+
+		return result;
+	}
+
+	private static Limit toLimit(final LimitBy limitBy) {
+		switch (limitBy) {
+		case NO_LIMIT:
+			return Limit.NO_LIMIT;
+		case FEWEST_VALUES:
+			return Limit.FEWEST_VALUES;
+		case MOST_VALUES:
+			return Limit.MOST_VALUES;
+		default:
+			throw new IllegalStateException("unhandled enum: " + limitBy);
+		}
+	}
+}

pdb-ui/src/main/java/org/lucares/pdbui/domain/LimitBy.java

@@ -0,0 +1,5 @@
+package org.lucares.pdbui.domain;
+
+public enum LimitBy {
+	NO_LIMIT, MOST_VALUES, FEWEST_VALUES
+}

pdb-ui/src/main/java/org/lucares/pdbui/domain/PlotRequest.java

@@ -9,6 +9,10 @@ public class PlotRequest {
 
 	private String groupBy;
 
+	private LimitBy limitBy = LimitBy.NO_LIMIT;
+
+	private int limit = Integer.MAX_VALUE;
+
 	public String getQuery() {
 		return query;
 	}
@@ -45,4 +49,20 @@ public class PlotRequest {
 	public void setGroupBy(final String groupBy) {
 		this.groupBy = groupBy;
 	}
+
+	public LimitBy getLimitBy() {
+		return limitBy;
+	}
+
+	public void setLimitBy(final LimitBy limitBy) {
+		this.limitBy = limitBy;
+	}
+
+	public int getLimit() {
+		return limit;
+	}
+
+	public void setLimit(final int limit) {
+		this.limit = limit;
+	}
 }