Examples of CollectionTable

javax.persistence.CollectionTable

org.datanucleus.store.rdbms.table.CollectionTable

Representation of a join table for a Collection. A Collection covers a wide range of possibilities in terms of whether it allows duplicates or not, whether it allows nulls or not, whether it supports ordering via indexes, whether it supports ordering via a SELECT criteria, etc. Consequently the join table can vary depending on the required capabilities.

JoinTable Mappings

The join table consists of the following mappings :-

ownerMapping linking back to the owning class with the Collection.
elementMapping either being an FK link to the element table or being an embedded/serialised element stored wholly in this table.
orderMapping which may be null, or otherwise stores an index for the elements. This is either to provide uniqueness or ordering in a List (and part of the PK).

org.jpox.store.rdbms.table.CollectionTable

JoinTable Mappings

The join table consists of the following mappings :-

ownerMapping linking back to the owning class with the Collection.
elementMapping either being an FK link to the element table or being an embedded/serialised element stored wholely in this table.
orderMapping which may be null, or otherwise stores an index for the elements. This is either to provide uniqueness or ordering in a List (and part of the PK).

@version $Revision: 1.39 $

                            {
                                JavaTypeMapping referenceMapping = null;
                                JavaTypeMapping selectMapping = null;
                                if (java.util.Collection.class.isAssignableFrom(relatedMmds[0].getType()))
                                {
                                    CollectionTable collTable = (CollectionTable)joinTable;
                                    referenceMapping = collTable.getElementMapping();
                                    selectMapping = collTable.getOwnerMapping();
                                }


                                // TODO Do we need to allow for a discriminator in the owner class here ?
                                // TODO Do we need to allow for subclass table here (like in 1-1 case) ?
                                expressionsIndex = fetchStmt.selectOuterJoin(referenceMapping, selectMapping,

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