Class ImmutableValueHandler

  extended by org.apache.openjpa.jdbc.meta.strats.AbstractValueHandler
      extended by 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
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, DBIdentifier name, ColumnIO io, boolean adapt)
 Column[] map(ValueMapping vm, String name, ColumnIO io, boolean adapt)
 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


public ImmutableValueHandler()
Method Detail


public static ImmutableValueHandler getInstance()
Singleton instance.


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


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


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
isVersionable in class AbstractValueHandler


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
toDataStoreValue in class AbstractValueHandler

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