org.apache.torque.adapter
Class MysqlAdapter

java.lang.Object
  extended by org.apache.torque.adapter.AbstractAdapter
      extended by org.apache.torque.adapter.MysqlAdapter
All Implemented Interfaces:
Serializable, Adapter

public class MysqlAdapter
extends AbstractAdapter

This is used in order to connect to a MySQL database using the MM drivers. Simply comment the above and uncomment this code below and fill in the appropriate values for DB_NAME, DB_HOST, DB_USER, DB_PASS.

http://www.mysql.com/

"jdbc:mysql://" + DB_HOST + "/" + DB_NAME + "?user=" + DB_USER + "&password=" + DB_PASS;

Version:
$Id: MysqlAdapter.java 1355228 2012-06-29 03:38:08Z tfischer $
Author:
Jon S. Stevens, Brett McLaughlin, Daniel Rall
See Also:
Serialized Form

Field Summary
 
Fields inherited from interface org.apache.torque.adapter.Adapter
ADAPTER_KEY, AUTODETECT_ADAPTER, DRIVER_KEY
 
Constructor Summary
protected MysqlAdapter()
          Empty protected constructor.
 
Method Summary
 void generateLimits(Query query, long offset, int limit)
          Generate a LIMIT offset, limit clause if offset > 0 or an LIMIT limit clause if limit is > 0 and offset is 0.
 String getIDMethodSQL(Object obj)
          Returns the SQL to get the database key of the last row inserted, which in this case is SELECT LAST_INSERT_ID().
 IDMethod getIDMethodType()
          Returns the constant from the IDMethod interface denoting which type of primary key generation method this type of RDBMS uses.
 String ignoreCase(String in)
          This method is used to ignore case.
 void lockTable(Connection con, String table)
          Locks the specified table.
 boolean supportsNativeLimit()
          Return true for MySQL
 boolean supportsNativeOffset()
          Return true for MySQL
 String toUpperCase(String in)
          This method is used to ignore case.
 void unlockTable(Connection con, String table)
          Unlocks the specified table.
 
Methods inherited from class org.apache.torque.adapter.AbstractAdapter
escapeText, getStringDelimiter, getUpdateLockClause, ignoreCaseInOrderBy, useEscapeClauseForLike, useIlike
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

MysqlAdapter

protected MysqlAdapter()
Empty protected constructor.

Method Detail

toUpperCase

public String toUpperCase(String in)
This method is used to ignore case.

Specified by:
toUpperCase in interface Adapter
Specified by:
toUpperCase in class AbstractAdapter
Parameters:
in - The string to transform to upper case.
Returns:
The upper case string.

ignoreCase

public String ignoreCase(String in)
This method is used to ignore case.

Specified by:
ignoreCase in interface Adapter
Specified by:
ignoreCase in class AbstractAdapter
Parameters:
in - The string whose case to ignore.
Returns:
The string in a case that can be ignored.

getIDMethodType

public IDMethod getIDMethodType()
Description copied from class: AbstractAdapter
Returns the constant from the IDMethod interface denoting which type of primary key generation method this type of RDBMS uses.

Specified by:
getIDMethodType in interface Adapter
Specified by:
getIDMethodType in class AbstractAdapter
Returns:
IDMethod constant
See Also:
Adapter.getIDMethodType()

getIDMethodSQL

public String getIDMethodSQL(Object obj)
Returns the SQL to get the database key of the last row inserted, which in this case is SELECT LAST_INSERT_ID().

Specified by:
getIDMethodSQL in interface Adapter
Specified by:
getIDMethodSQL in class AbstractAdapter
Parameters:
obj - Information used for key generation.
Returns:
The most recently inserted database key.
See Also:
Adapter.getIDMethodSQL(Object obj)

lockTable

public void lockTable(Connection con,
                      String table)
               throws SQLException
Locks the specified table.

Specified by:
lockTable in interface Adapter
Specified by:
lockTable in class AbstractAdapter
Parameters:
con - The JDBC connection to use.
table - The name of the table to lock.
Throws:
SQLException - No Statement could be created or executed.

unlockTable

public void unlockTable(Connection con,
                        String table)
                 throws SQLException
Unlocks the specified table.

Specified by:
unlockTable in interface Adapter
Specified by:
unlockTable in class AbstractAdapter
Parameters:
con - The JDBC connection to use.
table - The name of the table to unlock.
Throws:
SQLException - No Statement could be created or executed.

generateLimits

public void generateLimits(Query query,
                           long offset,
                           int limit)
Generate a LIMIT offset, limit clause if offset > 0 or an LIMIT limit clause if limit is > 0 and offset is 0.

Specified by:
generateLimits in interface Adapter
Overrides:
generateLimits in class AbstractAdapter
Parameters:
query - The query to modify
offset - the offset Value
limit - the limit Value

supportsNativeLimit

public boolean supportsNativeLimit()
Return true for MySQL

Specified by:
supportsNativeLimit in interface Adapter
Overrides:
supportsNativeLimit in class AbstractAdapter
Returns:
true if the database natively supports limiting the size of the resultset.
See Also:
AbstractAdapter.supportsNativeLimit()

supportsNativeOffset

public boolean supportsNativeOffset()
Return true for MySQL

Specified by:
supportsNativeOffset in interface Adapter
Overrides:
supportsNativeOffset in class AbstractAdapter
Returns:
true if the database natively supports returning results starting at an offset position other than 0.
See Also:
AbstractAdapter.supportsNativeOffset()


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