NcCF fix unexpected Subset variables

WEB-INF/classes/gov/noaa/pfel/coastwatch/pointdata/Table.java

@@ -6776,6 +6776,7 @@ private int checkConsistent(String errorInMethod, String varName, int oldValue,
    * @param conOps The corresponding operators. Remember that regex constraints will be tested on
    *     the source values!
    * @param conValues The corresponding values.
+   * @param includeSubsetVariables whether or not to add subset variables to the attributes.
    * @throws Exception if trouble. No matching data is not an error and returns an empty table (0
    *     rows and 0 columns).
    */
@@ -6785,7 +6786,8 @@ public void readNcCF(
       int standardizeWhat,
       StringArray conNames,
       StringArray conOps,
-      StringArray conValues)
+      StringArray conValues,
+      boolean includeSubsetVariables)
       throws Exception {
     // FUTURE optimization: instead of reading all of 1D obs variables,
     // find first and last set bit in obsKeep, just read a range of values,
@@ -7535,8 +7537,11 @@ else if (loadVariableNames.size() > 0)
       globalAttributes.set(cdmOuterName, subsetVars.toString()); // may be "", that's okay
       if (cdmInnerName != null)
         globalAttributes.set(cdmInnerName, ""); // nLevel=2 will set it properly below
-      globalAttributes.set(
-          "subsetVariables", subsetVars.toString()); // nLevel=2 will set it properly below
+
+      if (includeSubsetVariables) {
+        globalAttributes.set(
+            "subsetVariables", subsetVars.toString()); // nLevel=2 will set it properly below
+      }
 
       // apply constraints  (if there is data)
       BitSet outerKeep = null; // implies outerTable.nColumns = 0, so assume all are good
@@ -8261,7 +8266,9 @@ else if (loadVariableNames.size() > 0)
         innerTableNRows = innerTable.nRows();
         globalAttributes.set(cdmInnerName, cdmInnerVars.toString()); // may be "", that's okay
         subsetVars.append(cdmInnerVars);
-        globalAttributes.set("subsetVariables", subsetVars.toString()); // may be "", that's okay
+        if (includeSubsetVariables) {
+          globalAttributes.set("subsetVariables", subsetVars.toString()); // may be "", that's okay
+        }
 
         // read the outerIndexPA from vars[indexVar] and ensure valid
         // next 3 lines: as if no indexVar (outerDim == scalarDim)

WEB-INF/classes/gov/noaa/pfel/erddap/dataset/EDDTableFromNcCFFiles.java

@@ -195,7 +195,8 @@ public Table lowGetSourceDataFromFile(
         standardizeWhat,
         sourceConVars,
         sourceConOps,
-        sourceConValues);
+        sourceConValues,
+        EDStatic.config.includeNcCFSubsetVariables);
     // } else {
     //    //Just return a table with globalAtts, columns with atts, but no rows.
     //    table.readNcMetadata(decompFullName, sourceDataNames.toArray(), sourceDataTypes,
@@ -315,7 +316,7 @@ public static String generateDatasetsXml(
         tStandardizeWhat < 0 || tStandardizeWhat == Integer.MAX_VALUE
             ? DEFAULT_STANDARDIZEWHAT
             : tStandardizeWhat;
-    dataSourceTable.readNcCF(sampleFileName, null, tStandardizeWhat, null, null, null);
+    dataSourceTable.readNcCF(sampleFileName, null, tStandardizeWhat, null, null, null, true);
     double maxTimeES = Double.NaN;
     for (int c = 0; c < dataSourceTable.nColumns(); c++) {
       String colName = dataSourceTable.getColumnName(c);
@@ -385,10 +386,15 @@ public static String generateDatasetsXml(
 
     // subsetVariables  (or get from outer variables in some file types?)
     if (dataSourceTable.globalAttributes().getString("subsetVariables") == null
-        && dataAddTable.globalAttributes().getString("subsetVariables") == null)
+        && dataAddTable.globalAttributes().getString("subsetVariables") == null) {
       dataAddTable
           .globalAttributes()
           .add("subsetVariables", suggestSubsetVariables(dataSourceTable, dataAddTable, false));
+    } else if (dataAddTable.globalAttributes().getString("subsetVariables") == null) {
+      dataAddTable
+          .globalAttributes()
+          .add("subsetVariables", dataSourceTable.globalAttributes().getString("subsetVariables"));
+    }
 
     // add the columnNameForExtract variable
     if (tColumnNameForExtract.length() > 0) {

WEB-INF/classes/gov/noaa/pfel/erddap/util/EDConfig.java

@@ -237,6 +237,7 @@ public class EDConfig {
   @FeatureFlag public boolean updateSubsRssOnFileChanges;
   @FeatureFlag public final boolean useEddReflection;
   @FeatureFlag public boolean enableCors;
+  @FeatureFlag public boolean includeNcCFSubsetVariables;
   @FeatureFlag public boolean useSharedWatchService = true;
   @FeatureFlag public boolean redirectDocumentationToGitHubIo = true;
 
@@ -614,6 +615,7 @@ public EDConfig(String webInfParentDirectory) throws Exception {
     variablesMustHaveIoosCategory =
         getSetupEVBoolean(setup, ev, "variablesMustHaveIoosCategory", true);
     warName = getSetupEVString(setup, ev, "warName", "erddap");
+    includeNcCFSubsetVariables = getSetupEVBoolean(setup, ev, "includeNcCFSubsetVariables", false);
     useSharedWatchService = getSetupEVBoolean(setup, ev, "useSharedWatchService", true);
     redirectDocumentationToGitHubIo =
         getSetupEVBoolean(setup, ev, "redirectDocumentationToGitHubIo", true);