org.apache.openjpa.jdbc.meta.strats
Class ImmutableValueHandler

java.lang.Object
  org.apache.openjpa.jdbc.meta.strats.AbstractValueHandler
      org.apache.openjpa.jdbc.meta.strats.ImmutableValueHandler

All Implemented Interfaces:

Serializable, ValueHandler

public class ImmutableValueHandler
extends AbstractValueHandler

Handler for simple type and string values.

See Also:

Serialized Form

Constructor Summary

ImmutableValueHandler()

Method Summary

static ImmutableValueHandler	getInstance() Singleton instance.
boolean	isVersionable(ValueMapping vm) Return whether the values managed by this handler can be used in state image versioning.
Column[]	map(ValueMapping vm, String name, ColumnIO io, boolean adapt) Map the given value and return all mapped columns, or simply return an array of unmapped default columns.
Object	toDataStoreValue(ValueMapping vm, Object val, JDBCStore store) Translate the given value to its datastore equivalent.

Methods inherited from class org.apache.openjpa.jdbc.meta.strats.AbstractValueHandler

getResultArgument, objectValueRequiresLoad, toObjectValue, toObjectValue

Methods inherited from class java.lang.Object

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

Constructor Detail

ImmutableValueHandler

public ImmutableValueHandler()

Method Detail

getInstance

public static ImmutableValueHandler getInstance()

Singleton instance.

map

public Column[] map(ValueMapping vm,
                    String name,
                    ColumnIO io,
                    boolean adapt)

Description copied from interface: ValueHandler

Map the given value and return all mapped columns, or simply return an array of unmapped default columns. The columns should have at least their Name and JavaType properties set.

name - use as a base to form column name(s); the column names of unmapped columns will automatically be made to fit database limitations

io - I/O information about mapped columns; you do not have to set this information if returning templates

adapt - whether to adapt the mapping or schema

isVersionable

public boolean isVersionable(ValueMapping vm)

Description copied from interface: ValueHandler

Return whether the values managed by this handler can be used in state image versioning.

Specified by:

isVersionable in interface ValueHandler

Overrides:

isVersionable in class AbstractValueHandler

toDataStoreValue

public Object toDataStoreValue(ValueMapping vm,
                               Object val,
                               JDBCStore store)

Description copied from interface: ValueHandler

Translate the given value to its datastore equivalent. If this value occupies multiple columns, return an object array with one element per column. For relation id columns, return the state manager the column depends on.

Specified by:

toDataStoreValue in interface ValueHandler

Overrides:

toDataStoreValue in class AbstractValueHandler