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java.lang.Object org.apache.openjpa.jdbc.meta.strats.AbstractValueHandler org.apache.openjpa.jdbc.meta.strats.EmbedValueHandler org.apache.openjpa.jdbc.meta.strats.ObjectIdValueHandler
public class ObjectIdValueHandler
Handler for embedded object id fields.
Constructor Summary | |
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ObjectIdValueHandler()
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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. |
Object |
toDataStoreValue(ValueMapping vm,
Object val,
JDBCStore store)
Translate the given value to its datastore equivalent. |
Object |
toObjectValue(ValueMapping vm,
Object val)
Translate the given datastore value into its Java equivalent. |
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, objectValueRequiresLoad, 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 ObjectIdValueHandler()
Method Detail |
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public Column[] map(ValueMapping vm, String name, ColumnIO io, boolean adapt)
ValueHandler
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 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 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)
ValueHandler
ValueHandler.objectValueRequiresLoad(org.apache.openjpa.jdbc.meta.ValueMapping)
returns false.
toObjectValue
in interface ValueHandler
toObjectValue
in class AbstractValueHandler
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