Another experimental approach (#11766)

Author: landreev

modules/dataverse-spi/src/main/java/io/gdcc/spi/export/ExportDataOption.java

@@ -0,0 +1,50 @@
+package io.gdcc.spi.export;
+
+/**
+ *
+ * @author landreev
+ * Provides a mechanism for defining various data retrieval options for the 
+ * export subsystem in a way that should allow us adding support for more 
+ * options going forward with minimal or no changes to the existing code in 
+ * export plugins. 
+ */
+public class ExportDataOption {
+    
+    public enum SupportedOptions {
+        DatasetMetadataOnly,
+        PublicFilesOnly;
+    }
+    
+    private SupportedOptions optionType; 
+    
+    /*public static ExportDataOption addOption(String option) {
+        ExportDataOption ret = new ExportDataOption(); 
+        
+        for (SupportedOptions supported : SupportedOptions.values()) {
+            if (supported.toString().equals(option)) {
+                ret.optionType = supported;
+            }
+        }
+        return ret; 
+    }*/
+    
+    public static ExportDataOption addDatasetMetadataOnly() {
+        ExportDataOption ret = new ExportDataOption();
+        ret.optionType = SupportedOptions.DatasetMetadataOnly;
+        return ret; 
+    }
+    
+    public static ExportDataOption addPublicFilesOnly() {
+        ExportDataOption ret = new ExportDataOption();
+        ret.optionType = SupportedOptions.PublicFilesOnly;
+        return ret; 
+    }
+    
+    public boolean isDatasetMetadataOnly() {
+        return SupportedOptions.DatasetMetadataOnly.equals(optionType);
+    }
+    
+    public boolean isPublicFilesOnly() {
+        return SupportedOptions.PublicFilesOnly.equals(optionType);
+    }
+}

modules/dataverse-spi/src/main/java/io/gdcc/spi/export/ExportDataProvider.java

@@ -38,7 +38,7 @@ public interface ExportDataProvider {
      *          dataset-level metadata along with basic file metadata for each file
      *          in the dataset.
      */
-    JsonObject getDatasetORE();
+    JsonObject getDatasetORE(ExportDataOption... options);
 
     /**
      * Dataverse is capable of extracting DDI-centric metadata from tabular
@@ -53,7 +53,7 @@ public interface ExportDataProvider {
      *          edu.harvard.iq.dataverse.util.json.JSONPrinter classes where this
      *          output is used/generated (respectively).
      */
-    JsonArray getDatasetFileDetails();
+    JsonArray getDatasetFileDetails(ExportDataOption... options);
 
     /**
      * Similar to the above, but 
@@ -78,7 +78,7 @@ public interface ExportDataProvider {
      *          a starting point for an Exporter if it simplifies your exporter
      *          relative to using the JSON or OAI_ORE exports.
      */
-    JsonObject getDatasetSchemaDotOrg();
+    JsonObject getDatasetSchemaDotOrg(ExportDataOption... options);
 
     /**
      * 
@@ -88,7 +88,7 @@ public interface ExportDataProvider {
      *          a starting point for an Exporter if it simplifies your exporter
      *          relative to using the JSON or OAI_ORE exports.
      */
-    String getDataCiteXml();
+    String getDataCiteXml(ExportDataOption... options);
 
     /**
      * If an Exporter has specified a prerequisite format name via the
@@ -108,13 +108,8 @@ public interface ExportDataProvider {
      *          Exporter is configured to replace the internal ddi Exporter in
      *          Dataverse.
      */
-    default Optional<InputStream> getPrerequisiteInputStream() {
+    default Optional<InputStream> getPrerequisiteInputStream(ExportDataOption... options) {
         return Optional.empty();
     }
-    
-    public enum ExportDataOption {
-        DatasetMetadataOnly,
-        PublicFilesOnly;
-    }
-
-}
+   
+ }