Package net.ontopia.persistence.proxy

Class DefaultFieldHandler

java.lang.Object

net.ontopia.persistence.proxy.DefaultFieldHandler

All Implemented Interfaces:

FieldHandlerIF

public class DefaultFieldHandler
extends Object
implements FieldHandlerIF

INTERNAL: The default field handler implementation that is able to read values from result sets and bind values in prepared statements without any particular knowledge about fields. The field handler only works with single columns of the type specified in the class constructor.

Field Summary

Fields

Modifier and Type	Field	Description
protected int	sql_type

Constructor Summary

Constructors

Constructor	Description
DefaultFieldHandler(int sql_type)	Creates a instance of the default field handler by passing the SQL type to used for reading and storing column values.

Method Summary

Modifier and Type	Method	Description
void	bind(Object value, PreparedStatement stm, int stmt_index)	INTERNAL: Binds the object field value starting from the given offset in the prepared statement.
int	getColumnCount()	INTERNAL: Returns the number of columns that the field spans.
boolean	isIdentityField()	INTERNAL: Returns true if the field handler references an object identity field.
Object	load(AccessRegistrarIF registrar, TicketIF ticket, ResultSet rs, int rsindex, boolean direct)	INTERNAL: Reads the value beginning at the given offset in the current ResultSet row.
void	retrieveFieldValues(Object value, List<Object> field_values)
void	retrieveSQLValues(Object value, List<SQLValueIF> sql_values)
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

sql_type

protected int sql_type

Constructor Details

DefaultFieldHandler

public DefaultFieldHandler(int sql_type)

Creates a instance of the default field handler by passing the SQL type to used for reading and storing column values.

Method Details

getColumnCount

public int getColumnCount()

Description copied from interface: FieldHandlerIF

INTERNAL: Returns the number of columns that the field spans.

Specified by:

getColumnCount in interface FieldHandlerIF

isIdentityField

public boolean isIdentityField()

Description copied from interface: FieldHandlerIF

INTERNAL: Returns true if the field handler references an object identity field.

Specified by:

isIdentityField in interface FieldHandlerIF

load

public Object load(AccessRegistrarIF registrar,
 TicketIF ticket,
 ResultSet rs,
 int rsindex,
 boolean direct)
            throws SQLException

Description copied from interface: FieldHandlerIF

INTERNAL: Reads the value beginning at the given offset in the current ResultSet row. The number of columns actually read depends on the type of object field.

Specified by:

load in interface FieldHandlerIF

Throws:

SQLException

bind

public void bind(Object value,
 PreparedStatement stm,
 int stmt_index)
          throws SQLException

Description copied from interface: FieldHandlerIF

INTERNAL: Binds the object field value starting from the given offset in the prepared statement. The number of columns actually bound depends on the type of object field.

Specified by:

bind in interface FieldHandlerIF

Throws:

SQLException

retrieveFieldValues

public void retrieveFieldValues(Object value,
 List<Object> field_values)

Specified by:

retrieveFieldValues in interface FieldHandlerIF

retrieveSQLValues

public void retrieveSQLValues(Object value,
 List<SQLValueIF> sql_values)

Specified by:

retrieveSQLValues in interface FieldHandlerIF

toString

public String toString()

Overrides:

toString in class Object