logging site data

src/main/java/gov/usgs/earthquake/nshmp/model/ModelLoader.java

@@ -60,6 +60,7 @@ import java.util.logging.Logger;
 import com.google.common.collect.Iterables;
 
 import gov.usgs.earthquake.nshmp.Maths;
+import gov.usgs.earthquake.nshmp.Text;
 import gov.usgs.earthquake.nshmp.calc.CalcConfig;
 import gov.usgs.earthquake.nshmp.fault.FocalMech;
 import gov.usgs.earthquake.nshmp.geo.json.Feature;
@@ -117,14 +118,17 @@ abstract class ModelLoader {
   static HazardModel load(Path dir) {
 
     try {
-      System.out.println(dir);
+      System.out.println(dir + Text.NEWLINE);
 
       CalcConfig config = readCalcConfig(dir);
 
+      SiteData siteData = readSiteData(dir);
+      System.out.println(siteData);
+
       HazardModel.Builder builder = HazardModel.builder()
           .info(readModelInfo(dir).orElseThrow())
           .config(config)
-          .siteData(readSiteData(dir));
+          .siteData(siteData);
 
       /* Process tectonic setting source directories. */
       loadTectonicSettings(dir, builder);

src/main/java/gov/usgs/earthquake/nshmp/model/SiteData.java

 package gov.usgs.earthquake.nshmp.model;
 
+import static gov.usgs.earthquake.nshmp.Text.NEWLINE;
 import static gov.usgs.earthquake.nshmp.model.Deserialize.ID;
 import static gov.usgs.earthquake.nshmp.model.Deserialize.MODEL;
 import static gov.usgs.earthquake.nshmp.model.Deserialize.NAME;
@@ -64,7 +65,9 @@ public class SiteData {
   static SiteData create(Path dir) {
     Set<Basin> basins = init(dir.resolve(BASIN_DIR), Basin::new);
     Set<Margin> margins = init(dir.resolve(MARGIN_DIR), Margin::new);
-    return new SiteData(basins, margins);
+    return (basins.isEmpty() && margins.isEmpty())
+        ? EMPTY
+        : new SiteData(basins, margins);
   }
 
   /**
@@ -101,7 +104,17 @@ public class SiteData {
         scale, RoundingMode.HALF_UP);
   }
 
-  // @Override
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder(ModelFiles.SITE_DATA_DIR).append("/");
+    if (this == EMPTY) {
+      return sb.append(" (empty)").toString();
+    }
+    sb.append(NEWLINE);
+    basins.forEach(basin -> sb.append("   basin: ").append(basin.name).append(NEWLINE));
+    margins.forEach(margin -> sb.append("  margin: ").append(margin.name).append(NEWLINE));
+    return sb.toString();
+  }
 
   /** Optional site data values associated with a location. */
   public static class Values {