merged 1.1 branch into head

[mir.git] / source / mir / storage / RecordInserter.java

diff --git a/source/mir/storage/RecordInserter.java b/source/mir/storage/RecordInserter.java
new file mode 100755 (executable)
index 0000000..1027970
--- /dev/null
+++ b/source/mir/storage/RecordInserter.java
@@ -0,0 +1,111 @@
+/*\r
+ * Copyright (C) 2001-2006 The Mir-coders group\r
+ *\r
+ * This file is part of Mir.\r
+ *\r
+ * Mir is free software; you can redistribute it and/or modify\r
+ * it under the terms of the GNU General Public License as published by\r
+ * the Free Software Foundation; either version 2 of the License, or\r
+ * (at your option) any later version.\r
+ *\r
+ * Mir is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License\r
+ * along with Mir; if not, write to the Free Software\r
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\r
+ *\r
+ * In addition, as a special exception, The Mir-coders gives permission to link\r
+ * the code of this program with  any library licensed under the Apache Software License,\r
+ * and distribute linked combinations including the two.  You must obey the\r
+ * GNU General Public License in all respects for all of the code used other than\r
+ * the above mentioned libraries.  If you modify this file, you may extend this\r
+ * exception to your version of the file, but you are not obligated to do so.\r
+ * If you do not wish to do so, delete this exception statement from your version.\r
+ */\r
+package mir.storage;\r
+\r
+import java.sql.Connection;\r
+import java.sql.PreparedStatement;\r
+import java.sql.ResultSet;\r
+import java.util.Date;\r
+\r
+/**\r
+ * Class to generate insert statements\r
+ */\r
+public class RecordInserter extends StatementGenerator {\r
+\r
+  public RecordInserter(String aTableName, String aSequenceName) {\r
+    tableName = aTableName;\r
+    sequenceName = aSequenceName;\r
+  }\r
+\r
+  /**\r
+   * Assigns a value to a string typed field\r
+   */\r
+  public void assignString(String aFieldName, String aValue) {\r
+    assignObject(aFieldName, aValue);\r
+  }\r
+\r
+  /**\r
+   * Assigns a value to a date/time typed field\r
+   */\r
+  public void assignDate(String aFieldName, Date aDate) {\r
+    assignObject(aFieldName, new java.sql.Date(aDate.getTime()));\r
+  }\r
+\r
+  public void assignVerbatim(String aFieldName, String aText) {\r
+    if (firstAssignment) {\r
+      appendQuery("insert into " + tableName + "(");\r
+      firstAssignment = false;\r
+    }\r
+    else {\r
+      appendQuery(",");\r
+      values.append(",");\r
+    }\r
+\r
+    values.append(aText);\r
+\r
+    appendQuery(aFieldName);\r
+  }\r
+\r
+  /**\r
+   * Executes the statement. Returns the id of the insterted record.\r
+   */\r
+  public String execute(Connection aConnection) throws DatabaseFailure {\r
+    appendQuery(")");\r
+    appendQuery(CRLF);\r
+    appendQuery("values (");\r
+    appendQuery(values.toString());\r
+    appendQuery(")");\r
+\r
+    try {\r
+      int modified = executeWithModifiedCount(aConnection);\r
+      if (modified!=1) {\r
+        throw new Exception("modified count != 1 after insert");\r
+      }\r
+\r
+      PreparedStatement statement = aConnection.prepareStatement("select currval('" + sequenceName + "')");\r
+      ResultSet rs = statement.executeQuery();\r
+      rs.next();\r
+      return rs.getString(1);\r
+    }\r
+    catch (Throwable e) {\r
+      throw new DatabaseFailure(e);\r
+    }\r
+  }\r
+\r
+  private void assignObject(String aFieldName, Object anObject) {\r
+    appendParameter(anObject);\r
+\r
+    assignVerbatim(aFieldName, "?");\r
+  }\r
+\r
+  private String tableName;\r
+  private static final String CRLF = "\n\r";\r
+  private boolean firstAssignment = true;\r
+  private String sequenceName;\r
+  private StringBuffer values = new StringBuffer();\r
+}
\ No newline at end of file