#595 - Refactor - persistence context root type handling

src/main/java/com/avaje/ebeaninternal/server/deploy/AssocOneHelp.java

@@ -0,0 +1,39 @@
+package com.avaje.ebeaninternal.server.deploy;
+
+import com.avaje.ebean.bean.EntityBean;
+import com.avaje.ebeaninternal.server.query.SqlJoinType;
+
+import java.sql.SQLException;
+
+/**
+ * Local interface to handle Embedded, Reference and Reference Exported
+ * cases.
+ */
+abstract class AssocOneHelp {
+
+  /**
+   * Effectively skip reading (the jdbc resultSet as already in the persistence context etc).
+   */
+  abstract void loadIgnore(DbReadContext ctx);
+
+  /**
+   * Read and return the bean.
+   */
+  abstract Object read(DbReadContext ctx) throws SQLException;
+
+  /**
+   * Read setting values into the bean.
+   */
+  abstract Object readSet(DbReadContext ctx, EntityBean bean) throws SQLException;
+
+  /**
+   * Append to the select clause.
+   */
+  abstract void appendSelect(DbSqlContext ctx, boolean subQuery);
+
+  /**
+   * Append to the from clause.
+   */
+  abstract void appendFrom(DbSqlContext ctx, SqlJoinType joinType);
+
+}