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

java.lang.Object
  extended by org.apache.openjpa.jdbc.meta.strats.AbstractValueHandler
      extended by org.apache.openjpa.jdbc.meta.strats.EmbedValueHandler
All Implemented Interfaces:
Serializable, ValueHandler
Direct Known Subclasses:
ObjectIdValueHandler

public abstract class EmbedValueHandler
extends AbstractValueHandler

Base class for embedded value handlers.

Since:
0.4.0
Author:
Abe White
See Also:
Serialized Form

Constructor Summary
EmbedValueHandler()
           
 
Method Summary
protected  void map(ValueMapping vm, String name, ColumnIO io, boolean adapt, List cols, List args)
          Maps embedded value and gathers columns and arguments into given lists.
protected  Object toDataStoreValue(OpenJPAStateManager em, ValueMapping vm, JDBCStore store, Column[] cols, Object rval, int idx)
          Helper to convert an object value to its datastore equivalent.
protected  void toObjectValue(OpenJPAStateManager em, ValueMapping vm, Object val, JDBCStore store, JDBCFetchConfiguration fetch, Column[] cols, int idx)
          Helper to convert a datastore value to its object equivalent.
 
Methods inherited from class org.apache.openjpa.jdbc.meta.strats.AbstractValueHandler
getResultArgument, isVersionable, objectValueRequiresLoad, toDataStoreValue, toObjectValue, toObjectValue
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.apache.openjpa.jdbc.meta.ValueHandler
map
 

Constructor Detail

EmbedValueHandler

public EmbedValueHandler()
Method Detail

map

protected void map(ValueMapping vm,
                   String name,
                   ColumnIO io,
                   boolean adapt,
                   List cols,
                   List args)
Maps embedded value and gathers columns and arguments into given lists.


toDataStoreValue

protected Object toDataStoreValue(OpenJPAStateManager em,
                                  ValueMapping vm,
                                  JDBCStore store,
                                  Column[] cols,
                                  Object rval,
                                  int idx)
Helper to convert an object value to its datastore equivalent.

Parameters:
em - state manager for embedded object
vm - owning value
store - store manager
cols - embedded columns
rval - return array if multiple columns
idx - index in columns array to start

toObjectValue

protected void toObjectValue(OpenJPAStateManager em,
                             ValueMapping vm,
                             Object val,
                             JDBCStore store,
                             JDBCFetchConfiguration fetch,
                             Column[] cols,
                             int idx)
                      throws SQLException
Helper to convert a datastore value to its object equivalent.

Parameters:
em - state manager for embedded object
vm - owning value
val - datastore value
store - optional store manager
fetch - optional fetch configuration
cols - embedded columns
idx - index in columns array to start
Throws:
SQLException


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