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Commit b60a20ce authored by patg@krsna's avatar patg@krsna
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WL #2094 Federated Storage Handler. 

Edits to ha_federated.cc per Monty, cleanup
parent edf59e54
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Showing with 44 additions and 66 deletions
sql/ha_federated.cc
View file @ b60a20ce
......@@ -634,23 +634,12 @@ static int parse_url(FEDERATED_SHARE *share, TABLE *table,
share->port= MYSQL_PORT;
}
DBUG_PRINT("ha_federated::parse_url",
DBUG_PRINT("info",
("scheme %s username %s password %s \
hostname %s port %d database %s tablename %s\n",
share->scheme, share->username, share->password,
share->hostname, share->port, share->database,
share->table_base_name));
/* If creation, check first if we can connect and that the table exists */
/*if (table_create_flag)
{
if (check_foreign_data_source(share))
goto error;
*/
/* free share->schema even if no error, since this is a create */
/*
my_free((gptr) share->scheme, MYF(0));
}*/
}
else
goto error;
......@@ -662,7 +651,7 @@ static int parse_url(FEDERATED_SHARE *share, TABLE *table,
error:
my_error(error_num, MYF(0),
"this connection string is not in the correct format!\n");
"this connection string is not in the correct format!\n", 0);
DBUG_RETURN(1);
}
......@@ -760,7 +749,7 @@ bool ha_federated::create_where_from_key(String *to, KEY *key_info,
if (to->append("IS NULL", 7))
DBUG_RETURN(1);
DBUG_PRINT("ha_federated::create_where_from_key",
DBUG_PRINT("info",
("NULL type %s", to->c_ptr_quick()));
key_length-= key_part->store_length;
key+= key_part->store_length - 1;
......@@ -790,8 +779,6 @@ bool ha_federated::create_where_from_key(String *to, KEY *key_info,
if (to->append(buff, (uint)(ptr - buff)))
DBUG_RETURN(1);
DBUG_PRINT("ha_federated::create_where_from_key",
("bit type %s", to->c_ptr_quick()));
key_length-= length;
continue;
}
......@@ -805,8 +792,6 @@ bool ha_federated::create_where_from_key(String *to, KEY *key_info,
if (append_escaped(to, &tmp))
DBUG_RETURN(1);
DBUG_PRINT("ha_federated::create_where_from_key",
("blob type %s", to->c_ptr_quick()));
length= key_part->length;
}
else if (key_part->key_part_flag & HA_VAR_LENGTH_PART)
......@@ -816,14 +801,9 @@ bool ha_federated::create_where_from_key(String *to, KEY *key_info,
tmp.set_quick((char*) key, length, &my_charset_bin);
if (append_escaped(to, &tmp))
DBUG_RETURN(1);
DBUG_PRINT("ha_federated::create_where_from_key",
("varchar type %s", to->c_ptr_quick()));
}
else
{
DBUG_PRINT("ha_federated::create_where_from_key",
("else block, unknown type so far"));
char buff[MAX_FIELD_WIDTH];
String str(buff, sizeof(buff), field->charset()), *res;
......@@ -833,16 +813,13 @@ bool ha_federated::create_where_from_key(String *to, KEY *key_info,
if (append_escaped(to, res))
DBUG_RETURN(1);
res= field->val_str(&str, (char*) (key));
DBUG_PRINT("ha_federated::create_where_from_key",
("else block, string type", to->c_ptr_quick()));
}
else if (to->append(res->ptr(), res->length()))
DBUG_RETURN(1);
}
if (needs_quotes && to->append("'"))
DBUG_RETURN(1);
DBUG_PRINT("ha_federated::create_where_from_key",
DBUG_PRINT("info",
("final value for 'to' %s", to->c_ptr_quick()));
key+= length;
key_length-= length;
......@@ -869,7 +846,7 @@ static FEDERATED_SHARE *get_share(const char *table_name, TABLE *table)
/* share->table_name has the file location - we want the table's name! */
table_base_name= (char*) table->s->table_name;
DBUG_PRINT("ha_federated::get_share", ("table_name %s", table_base_name));
DBUG_PRINT("info", ("table_name %s", table_base_name));
/*
So why does this exist? There is no way currently to init a storage engine.
Innodb and BDB both have modifications to the server to allow them to
......@@ -909,7 +886,7 @@ static FEDERATED_SHARE *get_share(const char *table_name, TABLE *table)
share->select_query= select_query;
strmov(share->table_name, table_name);
strmov(share->select_query, query.ptr());
DBUG_PRINT("ha_federated::get_share",
DBUG_PRINT("info",
("share->select_query %s", share->select_query));
if (my_hash_insert(&federated_open_tables, (byte*) share))
goto error;
......@@ -996,11 +973,11 @@ int ha_federated::open(const char *name, int mode, uint test_if_locked)
/* Connect to foreign database mysql_real_connect() */
mysql= mysql_init(0);
DBUG_PRINT("ha_federated::open", ("hostname %s", share->hostname));
DBUG_PRINT("ha_federated::open", ("username %s", share->username));
DBUG_PRINT("ha_federated::open", ("password %s", share->password));
DBUG_PRINT("ha_federated::open", ("database %s", share->database));
DBUG_PRINT("ha_federated::open", ("port %d", share->port));
DBUG_PRINT("info", ("hostname %s", share->hostname));
DBUG_PRINT("info", ("username %s", share->username));
DBUG_PRINT("info", ("password %s", share->password));
DBUG_PRINT("info", ("database %s", share->database));
DBUG_PRINT("info", ("port %d", share->port));
if (!mysql_real_connect(mysql,
share->hostname,
share->username,
......@@ -1034,7 +1011,7 @@ int ha_federated::close(void)
/* free the result set */
if (result)
{
DBUG_PRINT("ha_federated::close",
DBUG_PRINT("info",
("mysql_free_result result at address %lx", result));
mysql_free_result(result);
result= 0;
......@@ -1120,7 +1097,7 @@ int ha_federated::write_row(byte *buf)
insert_field_value_string.length(0);
DBUG_ENTER("ha_federated::write_row");
DBUG_PRINT("ha_federated::write_row", ("table charset name %s csname %s",
DBUG_PRINT("info", ("table charset name %s csname %s",
table->s->table_charset->name, table->s->table_charset->csname));
statistic_increment(table->in_use->status_var.ha_write_count, &LOCK_status);
......@@ -1133,8 +1110,7 @@ int ha_federated::write_row(byte *buf)
this query id
*/
current_query_id= table->in_use->query_id;
DBUG_PRINT("ha_federated::write_row", ("current query id %d",
current_query_id));
DBUG_PRINT("info", ("current query id %d", current_query_id));
/* start off our string */
insert_string.append("INSERT INTO `");
......@@ -1160,9 +1136,9 @@ int ha_federated::write_row(byte *buf)
loop through the field pointer array, add any fields to both the values
list and the fields list that match the current query id
*/
x=0;
for (field= table->field; *field; field++, x++)
{
DBUG_PRINT("ha_federated::write_row", ("field type %d", (*field)->type()));
/* if there is a query id and if it's equal to the current query id */
if (((*field)->query_id && (*field)->query_id == current_query_id)
|| all_fields_have_same_query_id)
......@@ -1171,16 +1147,16 @@ int ha_federated::write_row(byte *buf)
if ((*field)->is_null())
{
DBUG_PRINT("ha_federated::write_row",
("current query id %d field is_null query id %d",
current_query_id, (*field)->query_id));
DBUG_PRINT("info",
("column %d current query id %d field is_null query id %d",
x, current_query_id, (*field)->query_id));
insert_field_value_string.append("NULL");
}
else
{
DBUG_PRINT("ha_federated::write_row",
("current query id %d field is not null query ID %d",
current_query_id, (*field)->query_id));
DBUG_PRINT("info",
("column %d current query id %d field is not null query ID %d",
x, current_query_id, (*field)->query_id));
(*field)->val_str(&insert_field_value_string);
/* quote these fields if they require it */
(*field)->quote_data(&insert_field_value_string); }
......@@ -1194,10 +1170,6 @@ int ha_federated::write_row(byte *buf)
/* append commas between both fields and fieldnames */
insert_string.append(',');
values_string.append(',');
DBUG_PRINT("ha_federated::write_row",
("insert_string %s values_string %s insert_field_value_string %s",
insert_string.c_ptr_quick(), values_string.c_ptr_quick(),
insert_field_value_string.c_ptr_quick()));
}
}
......@@ -1215,7 +1187,7 @@ int ha_federated::write_row(byte *buf)
AND, we don't want to chop off the last char '('
insert will be "INSERT INTO t1 VALUES ();"
*/
DBUG_PRINT("ha_federated::write_row", ("x %d num fields %d", x, num_fields));
DBUG_PRINT("info", ("x %d num fields %d", x, num_fields));
if (num_fields > 0)
{
/* chops off leading commas */
......@@ -1228,8 +1200,7 @@ int ha_federated::write_row(byte *buf)
/* add the values */
insert_string.append(values_string);
DBUG_PRINT("ha_federated::write_row", ("insert query %s",
insert_string.c_ptr_quick()));
DBUG_PRINT("info", ("insert query %s", insert_string.c_ptr_quick()));
if (mysql_real_query(mysql, insert_string.ptr(), insert_string.length()))
{
......@@ -1240,6 +1211,7 @@ int ha_federated::write_row(byte *buf)
DBUG_RETURN(0);
}
/*
Yes, update_row() does what you expect, it updates a row. old_data will have
the previous row record in it, while new_data will have the newest data in
......@@ -1286,7 +1258,7 @@ int ha_federated::update_row(const byte *old_data, byte *new_data)
primary_key_field_num= has_a_primary_key ?
table->key_info[table->s->primary_key].key_part->fieldnr - 1 : -1;
if (has_a_primary_key)
DBUG_PRINT("ha_federated::update_row", ("has a primary key"));
DBUG_PRINT("info", ("has a primary key"));
update_string.append("UPDATE `");
update_string.append(share->table_base_name);
......@@ -1324,7 +1296,10 @@ int ha_federated::update_row(const byte *old_data, byte *new_data)
update_string.append('=');
if ((*field)->is_null())
{
DBUG_PRINT("info", ("column %d is NULL", x ));
new_field_value.append("NULL");
}
else
{
/* otherwise = */
......@@ -1356,12 +1331,18 @@ int ha_federated::update_row(const byte *old_data, byte *new_data)
where_string.append(" IS NULL ");
else
{
uint o_len;
(*field)->val_str(&old_field_value,
(char*) (old_data + (*field)->offset()));
o_len= (*field)->pack_length();
DBUG_PRINT("info", ("o_len %lu", o_len));
(*field)->quote_data(&old_field_value);
where_string.append(old_field_value);
}
}
DBUG_PRINT("info",
("column %d new value %s old value %s",
x, new_field_value.c_ptr_quick(), old_field_value.c_ptr_quick() ));
update_string.append(new_field_value);
new_field_value.length(0);
......@@ -1378,7 +1359,7 @@ int ha_federated::update_row(const byte *old_data, byte *new_data)
if (! has_a_primary_key)
update_string.append(" LIMIT 1");
DBUG_PRINT("ha_federated::update_row", ("Final update query: %s",
DBUG_PRINT("info", ("Final update query: %s",
update_string.c_ptr_quick()));
if (mysql_real_query(mysql, update_string.ptr(), update_string.length()))
{
......@@ -1447,7 +1428,7 @@ int ha_federated::delete_row(const byte *buf)
}
delete_string.append(" LIMIT 1");
DBUG_PRINT("ha_federated::delete_row",
DBUG_PRINT("info",
("Delete sql: %s", delete_string.c_ptr_quick()));
if (mysql_real_query(mysql, delete_string.ptr(), delete_string.length()))
{
......@@ -1513,12 +1494,12 @@ int ha_federated::index_read_idx(byte *buf, uint index, const byte *key,
create_where_from_key(&index_string, &table->key_info[index], key, keylen);
sql_query.append(index_string);
DBUG_PRINT("ha_federated::index_read_idx",
DBUG_PRINT("info",
("current key %d key value %s index_string value %s length %d",
index, (char*) key, index_string.c_ptr_quick(),
index_string.length()));
DBUG_PRINT("ha_federated::index_read_idx",
DBUG_PRINT("info",
("current position %d sql_query %s", current_position,
sql_query.c_ptr_quick()));
......@@ -1554,7 +1535,7 @@ int ha_federated::index_init(uint keynr)
{
int error;
DBUG_ENTER("ha_federated::index_init");
DBUG_PRINT("ha_federated::index_init",
DBUG_PRINT("info",
("table: '%s' key: %d", table->s->table_name, keynr));
active_index= keynr;
DBUG_RETURN(0);
......@@ -1623,11 +1604,10 @@ int ha_federated::rnd_init(bool scan)
scan_flag= scan;
if (scan)
{
DBUG_PRINT("ha_federated::rnd_init",
("share->select_query %s", share->select_query));
DBUG_PRINT("info", ("share->select_query %s", share->select_query));
if (result)
{
DBUG_PRINT("ha_federated::rnd_init",
DBUG_PRINT("info",
("mysql_free_result address %lx", result));
mysql_free_result(result);
result= 0;
......@@ -1652,8 +1632,7 @@ int ha_federated::rnd_end()
DBUG_ENTER("ha_federated::rnd_end");
if (result)
{
DBUG_PRINT("ha_federated::index_end",
("mysql_free_result address %lx", result));
DBUG_PRINT("info", ("mysql_free_result address %lx", result));
mysql_free_result(result);
result= 0;
}
......@@ -1696,8 +1675,7 @@ int ha_federated::rnd_next(byte *buf)
/* Fetch a row, insert it back in a row format. */
current_position= result->data_cursor;
DBUG_PRINT("ha_federated::rnd_next",
("current position %d", current_position));
DBUG_PRINT("info", ("current position %d", current_position));
if (!(row= mysql_fetch_row(result)))
DBUG_RETURN(HA_ERR_END_OF_FILE);
......@@ -1941,7 +1919,7 @@ int ha_federated::create(const char *name, TABLE *table_arg,
DBUG_RETURN(0);
error:
DBUG_PRINT("ha_federated::create", ("errors, returning %d", ER_CANT_CREATE_TABLE));
DBUG_PRINT("info", ("errors, returning %d", ER_CANT_CREATE_TABLE));
my_free((gptr) tmp.scheme, MYF(0));
DBUG_RETURN(ER_CANT_CREATE_TABLE);
......
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