diff -r 7e08730da258 -r 4a1864c3e867 java/sql-dk/src/main/java/info/globalcode/sql/dk/SQLCommand.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/java/sql-dk/src/main/java/info/globalcode/sql/dk/SQLCommand.java	Mon Mar 04 20:15:24 2019 +0100
@@ -0,0 +1,49 @@
+/**
+ * SQL-DK
+ * Copyright © 2013 František Kučera (frantovo.cz)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package info.globalcode.sql.dk;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+import java.util.List;
+
+/**
+ * Represents SQL string and its parameters (if there are any).
+ *
+ * @author Ing. František Kučera (frantovo.cz)
+ */
+public abstract class SQLCommand {
+
+	private String query;
+
+	public SQLCommand(String query) {
+		this.query = query;
+	}
+
+	public PreparedStatement prepareStatement(Connection c) throws SQLException {
+		return c.prepareStatement(query);
+	}
+
+	public abstract void parametrize(PreparedStatement ps) throws SQLException;
+
+	public abstract List<? extends Parameter> getParameters();
+
+	public String getQuery() {
+		return query;
+	}
+}