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java.lang.Objectorg.apache.openjpa.jdbc.meta.strats.AbstractValueHandler
org.apache.openjpa.jdbc.meta.strats.EmbedValueHandler
org.apache.openjpa.jdbc.meta.strats.ElementEmbedValueHandler
public class ElementEmbedValueHandler
Handler for embedded objects as elements of a collection or map. For
embedded objects as fields, use the more powerful
EmbedFieldStrategy
.
Constructor Summary | |
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ElementEmbedValueHandler()
|
Method Summary | |
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Object |
getResultArgument(ValueMapping vm)
Return the argument to pass to the result set when loading data via Result.getObject(java.lang.Object, int, java.lang.Object) , or null if none. |
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. |
boolean |
objectValueRequiresLoad(ValueMapping vm)
Return whether this handler potentially must load extra data to extract the object value from its datastore representation. |
Object |
toDataStoreValue(ValueMapping vm,
Object val,
JDBCStore store)
Translate the given value to its datastore equivalent. |
Object |
toObjectValue(ValueMapping vm,
Object val,
OpenJPAStateManager sm,
JDBCStore store,
JDBCFetchConfiguration fetch)
Translate the given datastore value into its Java equivalent. |
Object |
toRelationDataStoreValue(OpenJPAStateManager sm,
Column col)
Return the serialized value for the given related object, now that its id has been assigned. |
Methods inherited from class org.apache.openjpa.jdbc.meta.strats.EmbedValueHandler |
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map, toDataStoreValue, toObjectValue |
Methods inherited from class org.apache.openjpa.jdbc.meta.strats.AbstractValueHandler |
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isVersionable, toObjectValue |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ElementEmbedValueHandler()
Method Detail |
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public Column[] map(ValueMapping vm, String name, ColumnIO io, boolean adapt)
ValueHandler
Name
and JavaType
properties set.
map
in interface ValueHandler
name
- use as a base to form column name(s); the column names
of unmapped columns will automatically be made to fit
database limitationsio
- I/O information about mapped columns; you do not
have to set this information if returning templatesadapt
- whether to adapt the mapping or schemapublic boolean objectValueRequiresLoad(ValueMapping vm)
ValueHandler
objectValueRequiresLoad
in interface ValueHandler
objectValueRequiresLoad
in class AbstractValueHandler
public Object getResultArgument(ValueMapping vm)
ValueHandler
Result.getObject(java.lang.Object, int, java.lang.Object)
, or null if none. If this value
occupies multiple columns, return an array with one element per
column. You may return null if all array elements would be null.
getResultArgument
in interface ValueHandler
getResultArgument
in class AbstractValueHandler
public Object toDataStoreValue(ValueMapping vm, Object val, JDBCStore store)
ValueHandler
toDataStoreValue
in interface ValueHandler
toDataStoreValue
in class AbstractValueHandler
public Object toObjectValue(ValueMapping vm, Object val, OpenJPAStateManager sm, JDBCStore store, JDBCFetchConfiguration fetch) throws SQLException
ValueHandler
ValueHandler.objectValueRequiresLoad(org.apache.openjpa.jdbc.meta.ValueMapping)
returns true.
toObjectValue
in interface ValueHandler
toObjectValue
in class AbstractValueHandler
sm
- the state manager that owns the value; may be null if
loading a projection
SQLException
public Object toRelationDataStoreValue(OpenJPAStateManager sm, Column col)
RelationId
toRelationDataStoreValue
in interface RelationId
|
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This documentation is deprecated and will be removed in the next release of WebLogic Server.