org.datanucleus.store.rdbms.table
Class PersistableJoinTable

java.lang.Object
  org.datanucleus.store.rdbms.table.AbstractTable
      org.datanucleus.store.rdbms.table.TableImpl
          org.datanucleus.store.rdbms.table.JoinTable
              org.datanucleus.store.rdbms.table.PersistableJoinTable

All Implemented Interfaces:

org.datanucleus.store.mapped.DatastoreContainerObject, Table

public class PersistableJoinTable
extends JoinTable

Representation of a join table for the case where we have an N-1 unidirectional relation stored in a join table. It's a minority interest situation, but worth inclusion. The "owner" in this case is the side with the relation (the "N" side). The "related" is the other side.

Field Summary

protected org.datanucleus.store.mapped.mapping.JavaTypeMapping

relatedMapping Mapping from the join table to the "related".

Fields inherited from class org.datanucleus.store.rdbms.table.JoinTable

mmd, ownerMapping, ownerType

Fields inherited from class org.datanucleus.store.rdbms.table.AbstractTable

columns, columnsByName, dba, existsInDatastore, identifier, LOCALISER, state, storeMgr, TABLE_STATE_INITIALIZED, TABLE_STATE_INITIALIZED_MODIFIED, TABLE_STATE_NEW, TABLE_STATE_PK_INITIALIZED, TABLE_STATE_VALIDATED

Constructor Summary

PersistableJoinTable(org.datanucleus.store.mapped.DatastoreIdentifier tableName, org.datanucleus.metadata.AbstractMemberMetaData mmd, RDBMSStoreManager storeMgr)
Constructor.

Method Summary

protected List	getExpectedCandidateKeys() Accessor for the candidate keys for this table.
List	getExpectedForeignKeys(org.datanucleus.ClassLoaderResolver clr) Accessor for the expected foreign keys for this table.
protected Set	getExpectedIndices(org.datanucleus.ClassLoaderResolver clr) Accessor for the indices for this table.
org.datanucleus.store.mapped.mapping.JavaTypeMapping	getMemberMapping(org.datanucleus.metadata.AbstractMemberMetaData mmd)
org.datanucleus.store.mapped.mapping.JavaTypeMapping	getRelatedMapping() Accessor for the mapping of the "related" in the join table.
void	initialize(org.datanucleus.ClassLoaderResolver clr) Method to initialise the table.

Methods inherited from class org.datanucleus.store.rdbms.table.JoinTable

debugMapping, getIdMapping, getOwnerMapping, getOwnerMemberMetaData, getPrimaryKey, requiresPrimaryKey

Methods inherited from class org.datanucleus.store.rdbms.table.TableImpl

createConstraints, dropConstraints, getSQLAddCandidateKeyStatements, getSQLAddFKStatements, getSQLCreateIndexStatements, getSQLCreateStatements, getSQLDropStatements, initializeColumnInfoForPrimaryKeyColumns, initializeColumnInfoFromDatastore, postInitialize, preInitialize, validate, validateColumns, validateConstraints, validatePrimaryKey

Methods inherited from class org.datanucleus.store.rdbms.table.AbstractTable

addColumnInternal, addDatastoreField, allowDDLOutput, assertIsInitialized, assertIsInitializedModified, assertIsPKInitialized, assertIsPKUninitialized, assertIsUninitialized, assertIsValidated, create, drop, equals, executeDdlStatement, executeDdlStatementList, exists, getCatalogName, getDatastoreField, getDatastoreFields, getDatastoreIdentifierFullyQualified, getDiscriminatorMapping, getDiscriminatorMetaData, getIdentifier, getMultitenancyMapping, getSchemaName, getStoreManager, getVersionMapping, getVersionMetaData, hasColumnName, hasDatastoreField, hashCode, isInitialized, isInitializedModified, isPKInitialized, isValidated, tableExistsInDatastore, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.datanucleus.store.mapped.DatastoreContainerObject

addDatastoreField, getDatastoreField, getDatastoreFields, getDiscriminatorMapping, getDiscriminatorMetaData, getIdentifier, getMultitenancyMapping, getStoreManager, getVersionMapping, getVersionMetaData, hasDatastoreField

Field Detail

relatedMapping

protected org.datanucleus.store.mapped.mapping.JavaTypeMapping relatedMapping

Mapping from the join table to the "related". This will be a PersistableMapping.

Constructor Detail

PersistableJoinTable

public PersistableJoinTable(org.datanucleus.store.mapped.DatastoreIdentifier tableName,
                            org.datanucleus.metadata.AbstractMemberMetaData mmd,
                            RDBMSStoreManager storeMgr)

Constructor.

Parameters:

tableName - The Table SQL identifier

mmd - Member meta data for the "element" field/property

storeMgr - Manager for the datastore.

Method Detail

getMemberMapping

public org.datanucleus.store.mapped.mapping.JavaTypeMapping getMemberMapping(org.datanucleus.metadata.AbstractMemberMetaData mmd)

initialize

public void initialize(org.datanucleus.ClassLoaderResolver clr)

Description copied from interface: Table

Method to initialise the table.

Parameters:

clr - The ClassLoaderResolver

getExpectedForeignKeys

public List getExpectedForeignKeys(org.datanucleus.ClassLoaderResolver clr)

Accessor for the expected foreign keys for this table.

Overrides:

getExpectedForeignKeys in class TableImpl

Parameters:

clr - The ClassLoaderResolver

Returns:

The expected foreign keys.

getExpectedIndices

protected Set getExpectedIndices(org.datanucleus.ClassLoaderResolver clr)

Accessor for the indices for this table. This includes both the user-defined indices (via MetaData), and the ones required by foreign keys (required by relationships).

Overrides:

getExpectedIndices in class TableImpl

Parameters:

clr - The ClassLoaderResolver

Returns:

The indices

getExpectedCandidateKeys

protected List getExpectedCandidateKeys()

Accessor for the candidate keys for this table.

Overrides:

getExpectedCandidateKeys in class TableImpl

Returns:

The indices

getRelatedMapping

public org.datanucleus.store.mapped.mapping.JavaTypeMapping getRelatedMapping()

Accessor for the mapping of the "related" in the join table.

Returns:

The column mapping for the related side.