org.datanucleus.store.rdbms.identifier

Interface IdentifierFactory

All Known Implementing Classes:

AbstractIdentifierFactory, DN2IdentifierFactory, DNIdentifierFactory, JPAIdentifierFactory, JPOXIdentifierFactory

public interface IdentifierFactory

Factory that creates immutable instances of DatastoreIdentifier. Identifiers are of a particular type. Each datastore could invent its own particular types as required, just that the ones here should be the principal types required.

Method Summary

Methods

Modifier and Type	Method and Description
DatastoreAdapter	getDatastoreAdapter() Accessor for the datastore adapter that we are creating identifiers for.
IdentifierCase	getIdentifierCase() Accessor for the identifier case being used.
String	getIdentifierInAdapterCase(String identifier) Accessor for an identifier for use in the datastore adapter
DatastoreIdentifier	newAdapterIndexFieldIdentifier() Method to return an identifier for an adapter index datastore field.
DatastoreIdentifier	newCandidateKeyIdentifier(Table table, int seq) Method to generate an identifier for a candidate key.
DatastoreIdentifier	newColumnIdentifier(String identifierName) Method to use to generate an identifier for a datastore field with the supplied name.
DatastoreIdentifier	newColumnIdentifier(String javaName, boolean embedded, int fieldRole) Method to create an identifier for a datastore field where we want the name based on the supplied java name, and the field has a particular role (and so could have its naming set according to the role).
DatastoreIdentifier	newDiscriminatorFieldIdentifier() Method to return an identifier for a discriminator datastore field.
DatastoreIdentifier	newForeignKeyFieldIdentifier(org.datanucleus.metadata.AbstractMemberMetaData ownerFmd, org.datanucleus.metadata.AbstractMemberMetaData relatedFmd, DatastoreIdentifier destinationId, boolean embedded, int fieldRole) Method to generate a FK/FK-index field identifier.
DatastoreIdentifier	newForeignKeyIdentifier(Table table, int seq) Method to create an identifier for a foreign key.
DatastoreIdentifier	newIdentifier(DatastoreIdentifier identifier, String suffix) Method to return a new Identifier based on the passed identifier, but adding on the passed suffix
DatastoreIdentifier	newIdentifier(IdentifierType identifierType, String identifierName) To be called when we want an identifier name creating based on the identifier.
DatastoreIdentifier	newIndexFieldIdentifier(org.datanucleus.metadata.AbstractMemberMetaData mmd) Method to return an identifier for an index (ordering) datastore field.
DatastoreIdentifier	newIndexIdentifier(Table table, boolean isUnique, int seq) Method to generate an identifier for an index.
DatastoreIdentifier	newJoinTableFieldIdentifier(org.datanucleus.metadata.AbstractMemberMetaData ownerFmd, org.datanucleus.metadata.AbstractMemberMetaData relatedFmd, DatastoreIdentifier destinationId, boolean embedded, int fieldRole) Method to generate a join-table identifier.
DatastoreIdentifier	newPrimaryKeyIdentifier(Table table) Method to generate an identifier for a primary key.
DatastoreIdentifier	newReferenceFieldIdentifier(org.datanucleus.metadata.AbstractMemberMetaData refMetaData, org.datanucleus.metadata.AbstractClassMetaData implMetaData, DatastoreIdentifier implIdentifier, boolean embedded, int fieldRole) Method to generate an identifier name for reference field, based on the metadata for the field, and the ClassMetaData for the implementation.
DatastoreIdentifier	newSequenceIdentifier(String sequenceName) Method to generate an identifier for a sequence using the passed name.
DatastoreIdentifier	newTableIdentifier(org.datanucleus.metadata.AbstractClassMetaData md) Method to return a Table identifier for the specified class.
DatastoreIdentifier	newTableIdentifier(org.datanucleus.metadata.AbstractMemberMetaData fmd) Method to return a Table identifier for the specified field.
DatastoreIdentifier	newTableIdentifier(String identifierName) Method to use to generate an identifier for a table with the supplied name.
DatastoreIdentifier	newVersionFieldIdentifier() Method to return an identifier for a version datastore field.

Method Detail

getDatastoreAdapter

DatastoreAdapter getDatastoreAdapter()

Accessor for the datastore adapter that we are creating identifiers for.

Returns:

The datastore adapter

getIdentifierCase

IdentifierCase getIdentifierCase()

Accessor for the identifier case being used.

Returns:

The identifier case

getIdentifierInAdapterCase

String getIdentifierInAdapterCase(String identifier)

Accessor for an identifier for use in the datastore adapter

Parameters:

identifier - The identifier name

Returns:

Identifier name for use with the datastore adapter

newIdentifier

DatastoreIdentifier newIdentifier(IdentifierType identifierType,
                                String identifierName)

To be called when we want an identifier name creating based on the identifier. Creates identifier for COLUMN, FOREIGN KEY, INDEX and TABLE

Parameters:

identifierType - the type of identifier to be created

identifierName - The identifier name

Returns:

The DatastoreIdentifier

newTableIdentifier

DatastoreIdentifier newTableIdentifier(String identifierName)

Method to use to generate an identifier for a table with the supplied name. The passed name will not be changed (other than in its case) although it may be truncated to fit the maximum length permitted for a table identifier.

Parameters:

identifierName - The identifier name

Returns:

The DatastoreIdentifier for the table

newTableIdentifier

DatastoreIdentifier newTableIdentifier(org.datanucleus.metadata.AbstractClassMetaData md)

Method to return a Table identifier for the specified class.

Parameters:

md - Meta data for the class

Returns:

The identifier for the table

newTableIdentifier

DatastoreIdentifier newTableIdentifier(org.datanucleus.metadata.AbstractMemberMetaData fmd)

Method to return a Table identifier for the specified field.

Parameters:

fmd - Meta data for the field

Returns:

The identifier for the table

newColumnIdentifier

DatastoreIdentifier newColumnIdentifier(String identifierName)

Method to use to generate an identifier for a datastore field with the supplied name. The passed name will not be changed (other than in its case) although it may be truncated to fit the maximum length permitted for a datastore field identifier.

Parameters:

identifierName - The identifier name

Returns:

The DatastoreIdentifier

newColumnIdentifier

DatastoreIdentifier newColumnIdentifier(String javaName,
                                      boolean embedded,
                                      int fieldRole)

Method to create an identifier for a datastore field where we want the name based on the supplied java name, and the field has a particular role (and so could have its naming set according to the role).

Parameters:

javaName - The java field name

embedded - Whether the identifier is for a field embedded

fieldRole - The role to be performed by this column e.g FK, Index ?

Returns:

The DatastoreIdentifier

newReferenceFieldIdentifier

DatastoreIdentifier newReferenceFieldIdentifier(org.datanucleus.metadata.AbstractMemberMetaData refMetaData,
                                              org.datanucleus.metadata.AbstractClassMetaData implMetaData,
                                              DatastoreIdentifier implIdentifier,
                                              boolean embedded,
                                              int fieldRole)

Method to generate an identifier name for reference field, based on the metadata for the field, and the ClassMetaData for the implementation.

Parameters:

refMetaData - the MetaData for the reference field

implMetaData - the AbstractClassMetaData for this implementation

implIdentifier - PK identifier for the implementation

embedded - Whether the identifier is for a field embedded

fieldRole - The role to be performed by this column e.g FK, collection element ?

Returns:

The DatastoreIdentifier

newDiscriminatorFieldIdentifier

DatastoreIdentifier newDiscriminatorFieldIdentifier()

Method to return an identifier for a discriminator datastore field.

Returns:

The discriminator datastore field identifier

newVersionFieldIdentifier

DatastoreIdentifier newVersionFieldIdentifier()

Method to return an identifier for a version datastore field.

Returns:

The version datastore field identifier

newIdentifier

DatastoreIdentifier newIdentifier(DatastoreIdentifier identifier,
                                String suffix)

Method to return a new Identifier based on the passed identifier, but adding on the passed suffix

Parameters:

identifier - The current identifier

suffix - The suffix

Returns:

The new identifier

newJoinTableFieldIdentifier

DatastoreIdentifier newJoinTableFieldIdentifier(org.datanucleus.metadata.AbstractMemberMetaData ownerFmd,
                                              org.datanucleus.metadata.AbstractMemberMetaData relatedFmd,
                                              DatastoreIdentifier destinationId,
                                              boolean embedded,
                                              int fieldRole)

Method to generate a join-table identifier. The identifier could be for a foreign-key to another table (if the destinationId is provided), or could be for a simple column in the join table.

Parameters:

ownerFmd - MetaData for the owner field

relatedFmd - MetaData for the related field (if bidirectional)

destinationId - Identifier for the identity field of the destination table

embedded - Whether the identifier is for a field embedded

fieldRole - The role to be performed by this column e.g FK, collection element ?

Returns:

The identifier.

newForeignKeyFieldIdentifier

DatastoreIdentifier newForeignKeyFieldIdentifier(org.datanucleus.metadata.AbstractMemberMetaData ownerFmd,
                                               org.datanucleus.metadata.AbstractMemberMetaData relatedFmd,
                                               DatastoreIdentifier destinationId,
                                               boolean embedded,
                                               int fieldRole)

Method to generate a FK/FK-index field identifier. The identifier could be for the FK field itself, or for a related index for the FK.

Parameters:

ownerFmd - MetaData for the owner field

relatedFmd - MetaData for the related field (if bidirectional)

destinationId - Identifier for the identity field of the destination table (if strict FK)

embedded - Whether the identifier is for a field embedded

fieldRole - The role to be performed by this column e.g owner, index ?

Returns:

The identifier

newIndexFieldIdentifier

DatastoreIdentifier newIndexFieldIdentifier(org.datanucleus.metadata.AbstractMemberMetaData mmd)

Method to return an identifier for an index (ordering) datastore field.

Parameters:

mmd - Metadata for the field/property that we require to add an index(order) column for

Returns:

The index datastore field identifier

newAdapterIndexFieldIdentifier

DatastoreIdentifier newAdapterIndexFieldIdentifier()

Method to return an identifier for an adapter index datastore field. An "adapter index" is a column added to be part of a primary key when some other column cant perform that role.

Returns:

The index datastore field identifier

newSequenceIdentifier

DatastoreIdentifier newSequenceIdentifier(String sequenceName)

Method to generate an identifier for a sequence using the passed name.

Parameters:

sequenceName - the name of the sequence to use

Returns:

The DatastoreIdentifier

newPrimaryKeyIdentifier

DatastoreIdentifier newPrimaryKeyIdentifier(Table table)

Method to generate an identifier for a primary key.

Parameters:

table - the table

Returns:

The DatastoreIdentifier

newIndexIdentifier

DatastoreIdentifier newIndexIdentifier(Table table,
                                     boolean isUnique,
                                     int seq)

Method to generate an identifier for an index.

Parameters:

table - the table

isUnique - if the index is unique

seq - the sequential number

Returns:

The DatastoreIdentifier

newCandidateKeyIdentifier

DatastoreIdentifier newCandidateKeyIdentifier(Table table,
                                            int seq)

Method to generate an identifier for a candidate key.

Parameters:

table - the table

seq - Sequence number

Returns:

The DatastoreIdentifier

newForeignKeyIdentifier

DatastoreIdentifier newForeignKeyIdentifier(Table table,
                                          int seq)

Method to create an identifier for a foreign key.

Parameters:

table - the table

seq - the sequential number

Returns:

The DatastoreIdentifier