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public interface ClassStrategy
Mapping from a class to a relational schema.
| Method Summary | |
|---|---|
|  ResultObjectProvider | customLoad(JDBCStore store,
           boolean subclasses,
           JDBCFetchConfiguration fetch,
           long startIdx,
           long endIdx)Implement this method to customize obtaining a result containing all instances of this class. | 
|  boolean | customLoad(OpenJPAStateManager sm,
           JDBCStore store,
           JDBCFetchConfiguration fetch,
           Result result)Implement this method to customize loading from a Resultinto an instance. | 
|  boolean | customLoad(OpenJPAStateManager sm,
           JDBCStore store,
           PCState state,
           JDBCFetchConfiguration fetch)Implement this method to load the state of a given object, without a previous Result. | 
|  boolean | isPrimaryKeyObjectId(boolean hasAll)Return true if the this class' primary key columns correspond to the base class' primary key columns used to construct oid values. | 
|  Joins | joinSuperclass(Joins joins,
               boolean toThis)Join the mapping and its superclass. | 
|  void | setClassMapping(ClassMapping owner)Set the class mapping using this strategy. | 
|  boolean | supportsEagerSelect(Select sel,
                    OpenJPAStateManager sm,
                    JDBCStore store,
                    ClassMapping base,
                    JDBCFetchConfiguration fetch)Return true if this strategy can perform the given select from the given basemapping. | 
| Methods inherited from interface org.apache.openjpa.jdbc.meta.Strategy | 
|---|
| customDelete, customInsert, customUpdate, delete, getAlias, initialize, insert, isCustomDelete, isCustomInsert, isCustomUpdate, map, update | 
| Method Detail | 
|---|
void setClassMapping(ClassMapping owner)
boolean isPrimaryKeyObjectId(boolean hasAll)
hasAll - if true, there must be a primary key column for every
 base class primary key column; if false the primary key
 must only match a subset of the base class primary key columns
Joins joinSuperclass(Joins joins,
                     boolean toThis)
toThis - if false, inner join to the superclass table; if
 true, outer join from the superclass table to this table
boolean supportsEagerSelect(Select sel,
                            OpenJPAStateManager sm,
                            JDBCStore store,
                            ClassMapping base,
                            JDBCFetchConfiguration fetch)
base mapping.
 The given state manager may be null if selecting multiple instances.
ResultObjectProvider customLoad(JDBCStore store,
                                boolean subclasses,
                                JDBCFetchConfiguration fetch,
                                long startIdx,
                                long endIdx)
                                throws SQLException
SQLException
boolean customLoad(OpenJPAStateManager sm,
                   JDBCStore store,
                   PCState state,
                   JDBCFetchConfiguration fetch)
                   throws SQLException,
                          ClassNotFoundException
Result. Return true if this method handles the
 load. If the object does not exist in the data store, simply take no
 action on it (but still return true). Return false to use default
 loading.
state - if non-null, then you must initialize the state
 and persistent object of the given state manager
 (after determining the actual class of the object
 from the database, if there are possible persistent
 subclasses); initialization looks like this: 
 sm.initialize (pcClass, state)
SQLException
ClassNotFoundException
boolean customLoad(OpenJPAStateManager sm,
                   JDBCStore store,
                   JDBCFetchConfiguration fetch,
                   Result result)
                   throws SQLException
Result
 into an instance. Return true if this mapping handles the
 load; false if normal loading should proceed after calling this method.
SQLException| 
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