#919 - io.ebean package initial

src/main/java/io/ebeaninternal/server/query/CQueryDraftSupport.java

@@ -0,0 +1,28 @@
+package io.ebeaninternal.server.query;
+
+import java.util.Map;
+
+/**
+ * Support 'asDraft' queries.
+ */
+class CQueryDraftSupport {
+
+  /**
+   * The mapping of base tables to their matching 'draft' table.
+   */
+  private final Map<String, String> tableMap;
+
+  CQueryDraftSupport(Map<String, String> tableMap) {
+    this.tableMap = tableMap;
+  }
+
+  /**
+   * Return the draft table associated to the base table.
+   * <p>
+   * This returns null for entities that are not draftable and in that case
+   * the usual base table is used.
+   */
+  String getDraftTable(String table) {
+    return tableMap.get(table);
+  }
+}