From 471a6ce1d534d6a508fb315f2cc22cf65ac0d66e Mon Sep 17 00:00:00 2001
From: Michael Bayne <mdb@samskivert.com>
Date: Mon, 6 May 2013 11:17:23 -0700
Subject: [PATCH] Add a version of createTableIfMissing minus uinqueness
 constraints.

Most callers don't want or need 'em and have to import List and Collections
just to conveniently pass in an empty list.
---
 .../java/com/samskivert/jdbc/BaseLiaison.java     | 15 ++++++++++++++-
 .../java/com/samskivert/jdbc/DatabaseLiaison.java | 10 ++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/samskivert/jdbc/BaseLiaison.java b/src/main/java/com/samskivert/jdbc/BaseLiaison.java
index ea01fe73..81cfb630 100644
--- a/src/main/java/com/samskivert/jdbc/BaseLiaison.java
+++ b/src/main/java/com/samskivert/jdbc/BaseLiaison.java
@@ -9,6 +9,7 @@ import java.sql.Connection;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
+import java.util.Collections;
 import java.util.List;
 
 import com.samskivert.util.StringUtil;
@@ -185,8 +186,20 @@ public abstract class BaseLiaison implements DatabaseLiaison
         return true;
     }
 
+    /**
+     * Created a new table of the given name with the given column names and column definitions;
+     * the given set of unique constraints (or null) and the given primary key columns (or null).
+     * Returns true if the table was successfully created, false if it already existed.
+     */
+    public boolean createTableIfMissing (Connection conn, String table, List<String> columns,
+                                         List<ColumnDefinition> declarations,
+                                         List<String> primaryKeyColumns) throws SQLException {
+        return createTableIfMissing(conn, table, columns, declarations,
+                                    Collections.<List<String>>emptyList(), primaryKeyColumns);
+    }
+
     @Override // from DatabaseLiaison
-        public boolean createTableIfMissing (Connection conn, String table, List<String> columns,
+    public boolean createTableIfMissing (Connection conn, String table, List<String> columns,
                                          List<ColumnDefinition> definitions,
                                          List<List<String>> uniqueConstraintColumns,
                                          List<String> primaryKeyColumns)
diff --git a/src/main/java/com/samskivert/jdbc/DatabaseLiaison.java b/src/main/java/com/samskivert/jdbc/DatabaseLiaison.java
index ed271ea1..8ef1751a 100644
--- a/src/main/java/com/samskivert/jdbc/DatabaseLiaison.java
+++ b/src/main/java/com/samskivert/jdbc/DatabaseLiaison.java
@@ -137,6 +137,16 @@ public interface DatabaseLiaison
                                  ColumnDefinition columnDef)
         throws SQLException;
 
+    /**
+     * Created a new table of the given name with the given column names and column definitions;
+     * the given set of unique constraints (or null) and the given primary key columns (or null).
+     * Returns true if the table was successfully created, false if it already existed.
+     */
+    public boolean createTableIfMissing (Connection conn, String table, List<String> columns,
+                                         List<ColumnDefinition> declarations,
+                                         List<String> primaryKeyColumns)
+        throws SQLException;
+
     /**
      * Created a new table of the given name with the given column names and column definitions;
      * the given set of unique constraints (or null) and the given primary key columns (or null).