implement PdsProperty

service/src/main/java/gov/nasa/pds/api/registry/model/properties/PdsProperty.java

@@ -0,0 +1,54 @@
+package gov.nasa.pds.api.registry.model.properties;
+
+import gov.nasa.pds.api.registry.exceptions.UnsupportedSearchProperty;
+import gov.nasa.pds.api.registry.model.exceptions.UnhandledException;
+
+import static gov.nasa.pds.api.registry.model.SearchUtil.jsonPropertyToOpenProperty;
+import static gov.nasa.pds.api.registry.model.SearchUtil.openPropertyToJsonProperty;
+
+/**
+ * Provides a unified interface for dealing with PDS product properties, which are named differently depending on the
+ * context.  The canonical names used by OpenSearch use '/' as a separator, whereas users and the API URL interface
+ * replace these with "."
+ */
+public class PdsProperty {
+    private final String value;
+
+    public PdsProperty(String value) {
+        this.value = value;
+    }
+
+    /**
+     * Returns the property, in the format used by OpenSearch
+     */
+    public static String toOpenPropertyString(String value) {
+        // TODO: replace all uses of SearchUtil.jsonPropertyToOpenProperty with PdsProperty, move conversion logic here,
+        //  and excise SearchUtil.jsonPropertyToOpenProperty
+        return jsonPropertyToOpenProperty(value);
+    }
+
+    public String toOpenPropertyString() {
+        return toOpenPropertyString(this.value);
+    }
+
+    /**
+     * Returns the property, in the format used by the API interface (i.e. end-users)
+     */
+    public static String toJsonPropertyString(String value) {
+        // TODO: replace all uses of SearchUtil.openPropertyToJsonProperty with PdsProperty, move conversion logic here,
+        //  and excise SearchUtil.openPropertyToJsonProperty
+
+        //TODO: Remove this stopgap once https://github.com/NASA-PDS/registry-api/issues/528 is resolved
+        try{
+            return openPropertyToJsonProperty(value);
+        } catch (UnsupportedSearchProperty err) {
+            return value.replace('/', '.');
+        }
+    }
+
+    public String toJsonPropertyString() {
+        return toJsonPropertyString(this.value);
+    }
+
+
+}