X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=source%2Fmir%2Fstorage%2FRecordUpdater.java;fp=source%2Fmir%2Fstorage%2FRecordUpdater.java;h=7aaa7bef8ebc476cd400b3fc69a590e236df5f2d;hb=c9ac8fa71b679f8d967aac901bbef945c13b94c9;hp=0000000000000000000000000000000000000000;hpb=d63595f89aaa4b6a524dc0b4af9e0eef888f4c6b;p=mir.git

diff --git a/source/mir/storage/RecordUpdater.java b/source/mir/storage/RecordUpdater.java
new file mode 100755
index 00000000..7aaa7bef
--- /dev/null
+++ b/source/mir/storage/RecordUpdater.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2001-2006 The Mir-coders group
+ *
+ * This file is part of Mir.
+ *
+ * Mir 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Mir 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 Mir; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * In addition, as a special exception, The Mir-coders gives permission to link
+ * the code of this program with  any library licensed under the Apache Software License,
+ * and distribute linked combinations including the two.  You must obey the
+ * GNU General Public License in all respects for all of the code used other than
+ * the above mentioned libraries.  If you modify this file, you may extend this
+ * exception to your version of the file, but you are not obligated to do so.
+ * If you do not wish to do so, delete this exception statement from your version.
+ */
+package mir.storage;
+
+import java.sql.Connection;
+import java.util.*;
+
+/**
+ * Class to generate update statements
+ */
+public class RecordUpdater extends StatementGenerator{
+  public RecordUpdater(String aTableName, String aRecordId) {
+    tableName = aTableName;
+    recordId = aRecordId;
+  }
+
+  /**
+   * Assigns a value to a string typed field
+   */
+  public void assignString(String aFieldName, String aValue) {
+    assignObject(aFieldName, aValue);
+  }
+
+  /**
+   * Assigns a value to a date/time typed field
+   */
+  public void assignDateTime(String aFieldName, Date aDate) {
+    assignObject(aFieldName, new java.sql.Timestamp(aDate.getTime()));
+  }
+
+  /**
+   * Assigns a verbatim value to a field. Use with case: no quoting/escaping
+   * will be performed
+   **/
+  public void assignVerbatim(String aFieldName, String aValue) {
+    if (firstAssignment) {
+      appendQuery("update " + tableName + " set ");
+      firstAssignment = false;
+    }
+    else {
+      appendQuery(",");
+    }
+
+    appendQuery(CRLF);
+    appendQuery("  " + aFieldName + " = " + aValue);
+  }
+
+  /**
+   * Executes the statement. Returns then number of records
+   * changed
+   */
+  public int execute(Connection aConnection) throws DatabaseFailure {
+    appendQuery(CRLF);
+    appendQuery("where id = ?");
+    appendParameter(recordId);
+
+    return executeWithModifiedCount(aConnection);
+  }
+
+  private void assignObject(String aFieldName, Object anObject) {
+    appendParameter(anObject);
+    assignVerbatim(aFieldName, "?");
+  }
+
+  private String tableName;
+  private static final String CRLF = "\n\r";
+  private String recordId;
+  private boolean firstAssignment = true;
+}
\ No newline at end of file