first go at implementing some handler functions

Author: maxbeutel

storage/example/ha_example.cc

@@ -449,14 +449,42 @@ int ha_example::close(void)
 
 int ha_example::write_row(uchar *buf)
 {
- DBUG_ENTER("ha_example::write_row");
- /*
- Example of a successful write_row. We don't store the data
- anywhere; they are thrown away. A real implementation will
- probably need to do something with 'buf'. We report a success
- here, to pretend that the insert was successful.
- */
- DBUG_RETURN(0);
+ DBUG_ENTER("ha_example::write_row");
+
+ if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_INSERT) {
+ table->timestamp_field->set_time();
+ }
+
+ if (table->next_number_field && buf == table->record[0]) {
+ int error;
+
+ if ((error = update_auto_increment())) {
+ return error;
+ }
+ }
+
+ my_bitmap_map *old_map = dbug_tmp_use_all_columns(table, table->read_set);
+ my_ptrdiff_t offset = (my_ptrdiff_t) (buf - table->record[0]);
+
+ for (uint i = 0; i < table->s->fields; i++) {
+ Field *field = table->field[i];
+ field->move_field_offset(offset);
+
+ uint index = field->field_index;
+
+ char tmp_buf[1024];
+ String tmp(tmp_buf, sizeof(tmp_buf), &my_charset_bin);
+ String *val = field->val_str(&tmp, &tmp);
+
+ DBUG_PRINT("ha_example", ("at index '%d'", index));
+ DBUG_PRINT("ha_example", ("table name is '%s'", field->table_name[0]));
+ DBUG_PRINT("ha_example", ("name is '%s'", field->field_name));
+ DBUG_PRINT("ha_example", ("value is '%s'", val->c_ptr()));
+ }
+
+ dbug_tmp_restore_column_map(table->read_set, old_map);
+
+ DBUG_RETURN(0);
 }
 
 
@@ -628,6 +656,7 @@ int ha_example::index_last(uchar *buf)
 int ha_example::rnd_init(bool scan)
 {
  DBUG_ENTER("ha_example::rnd_init");
+
  DBUG_RETURN(HA_ERR_WRONG_COMMAND);
 }
 
@@ -991,10 +1020,14 @@ int ha_example::create(const char *name, TABLE *table_arg,
  HA_CREATE_INFO *create_info)
 {
  DBUG_ENTER("ha_example::create");
- /*
- This is not implemented but we want someone to be able to see that it
- works.
- */
+
+ String file_name;
+ file_name.append("foo");
+ file_name.append("bar");
+ file_name.append("baz");
+
+ DBUG_PRINT("ha_example", ("filename is '%s'", file_name.c_ptr()));
+
  DBUG_RETURN(0);
 }