Fix problems with depot being unable to create a table called domains on postgres.

src/main/java/com/samskivert/depot/impl/DepotMarshaller.java

@@ -1022,25 +1022,25 @@ public class DepotMarshaller<T extends PersistentRecord> implements QueryMarshal
             return ctx.invoke(new Fetcher.Trivial<TableMetaData>() {
                 public TableMetaData invoke (PersistenceContext ctx, Connection conn,
                                              DatabaseLiaison dl) throws SQLException {
-                    return new TableMetaData(conn.getMetaData(), tableName);
+                    return new TableMetaData(conn.getMetaData(), dl, tableName);
                 }
             });
         }
 
-        public TableMetaData (DatabaseMetaData meta, String tableName)
+        public TableMetaData (DatabaseMetaData meta, DatabaseLiaison dl, String tableName)
             throws SQLException
         {
-            tableExists = meta.getTables(null, null, tableName, null).next();
+            tableExists = meta.getTables(null, dl.getSchemaName(), tableName, null).next();
             if (!tableExists) {
                 return;
             }
 
-            ResultSet rs = meta.getColumns(null, null, tableName, "%");
+            ResultSet rs = meta.getColumns(null, dl.getSchemaName(), tableName, "%");
             while (rs.next()) {
                 tableColumns.add(rs.getString("COLUMN_NAME"));
             }
 
-            rs = meta.getIndexInfo(null, null, tableName, false, false);
+            rs = meta.getIndexInfo(null, dl.getSchemaName(), tableName, false, false);
             while (rs.next()) {
                 String indexName = rs.getString("INDEX_NAME");
                 Set<String> set = indexColumns.get(indexName);
@@ -1060,7 +1060,7 @@ public class DepotMarshaller<T extends PersistentRecord> implements QueryMarshal
                 }
             }
 
-            rs = meta.getPrimaryKeys(null, null, tableName);
+            rs = meta.getPrimaryKeys(null, dl.getSchemaName(), tableName);
             while (rs.next()) {
                 pkName = rs.getString("PK_NAME");
                 pkColumns.add(rs.getString("COLUMN_NAME"));

src/main/java/com/samskivert/depot/impl/jdbc/BaseLiaison.java

@@ -85,7 +85,7 @@ public abstract class BaseLiaison implements DatabaseLiaison
     public boolean tableContainsColumn (Connection conn, String table, String column)
         throws SQLException
     {
-        ResultSet rs = conn.getMetaData().getColumns(null, null, table, column);
+        ResultSet rs = conn.getMetaData().getColumns(null, getSchemaName(), table, column);
         while (rs.next()) {
             String tname = rs.getString("TABLE_NAME");
             String cname = rs.getString("COLUMN_NAME");
@@ -100,7 +100,7 @@ public abstract class BaseLiaison implements DatabaseLiaison
     public boolean tableContainsIndex (Connection conn, String table, String index)
         throws SQLException
     {
-        ResultSet rs = conn.getMetaData().getIndexInfo(null, null, table, false, true);
+        ResultSet rs = conn.getMetaData().getIndexInfo(null, getSchemaName(), table, false, true);
         while (rs.next()) {
             String tname = rs.getString("TABLE_NAME");
             String iname = rs.getString("INDEX_NAME");
@@ -298,6 +298,12 @@ public abstract class BaseLiaison implements DatabaseLiaison
         return true;
     }
 
+    // from DatabaseLiaison
+    public String getSchemaName ()
+    {
+        return null;
+    }
+
     // from DatabaseLiaison
     public abstract String tableSQL (String table);
 

src/main/java/com/samskivert/depot/impl/jdbc/DatabaseLiaison.java

@@ -203,6 +203,11 @@ public interface DatabaseLiaison
     public boolean dropTable (Connection conn, String name)
         throws SQLException;
 
+    /**
+     * Get the schema name to pass to DatabaseMetaData calls, which may be null.
+     */
+    public String getSchemaName ();
+
     /**
      * Returns the proper SQL to identify a table. Some databases require table names to be quoted.
      */

src/main/java/com/samskivert/depot/impl/jdbc/PostgreSQLLiaison.java

@@ -119,6 +119,14 @@ public class PostgreSQLLiaison extends BaseLiaison
         return true;
     }
 
+    @Override
+    public String getSchemaName ()
+    {
+        // TODO: is this global to all postgres? Should this be discovered by asking
+        // DatabaseMetaData.getSchemas()?
+        return "public";
+    }
+
     // from DatabaseLiaison
     public String columnSQL (String column)
     {