Generate FTS only for projects without special shopping list db by default

Author: rekire

core/src/main/java/io/snabble/sdk/ProductDatabase.java

@@ -1111,7 +1111,7 @@ private void exec(String sql) {
         }
     }
 
-    private String bindArgs(String sql, String[] args) {
+    public static String bindArgs(String sql, String[] args) {
         if (args == null) {
             return sql;
         }

core/src/main/java/io/snabble/sdk/Project.java

@@ -99,6 +99,10 @@ public class Project {
                 .build();
 
         boolean generateSearchIndex = snabble.getConfig().generateSearchIndex;
+        // Generate FTS if the shopping list is used and there is no shopping list database
+        if (snabble.getConfig().isUsingShoppingList && getShoppingListDbUrl() == null) {
+            generateSearchIndex = true;
+        }
 
         productDatabase = new ProductDatabase(this, id + ".sqlite3", generateSearchIndex);
         shoppingCartStorage = new ShoppingCartStorage(this);

core/src/main/java/io/snabble/sdk/Snabble.java

@@ -724,6 +724,15 @@ public static class Config {
          */
         public boolean generateSearchIndex;
 
+        /**
+         * If set to true, the SDK downloads the shopping list meta data are present or creates an
+         * full text index for the product data.
+         * <p>
+         * Note that this increases setup time of the ProductDatabase when there are no shopping
+         * list meta data, and it may not be immediately available offline.
+         */
+        public boolean isUsingShoppingList;
+
         /**
          * The time that the database is allowed to be out of date. After the specified time in
          * milliseconds the database only uses online requests for asynchronous requests.