org.apache.cayenne.dbsync.merge.token

Interface MergerToken

All Superinterfaces:

Comparable<MergerToken>

All Known Implementing Classes:

AbstractMergerToken, AbstractToDbToken, AbstractToModelToken, AddColumnToDb, AddColumnToModel, AddRelationshipToDb, AddRelationshipToModel, CreateTableToDb, CreateTableToModel, DropColumnToDb, DropColumnToModel, DropRelationshipToDb, DropRelationshipToModel, DropTableToDb, DropTableToModel, DummyReverseToken, SetAllowNullToDb, SetAllowNullToModel, SetColumnTypeToDb, SetColumnTypeToModel, SetGeneratedFlagToDb, SetGeneratedFlagToModel, SetNotNullToDb, SetNotNullToModel, SetPrimaryKeyToDb, SetPrimaryKeyToModel, SetValueForNullToDb

public interface MergerToken
extends Comparable<MergerToken>

Represents a minimal atomic synchronization operation between database and Cayenne model.

Method Summary

Modifier and Type	Method and Description
MergerToken	createReverse(MergerTokenFactory factory) Create a complimentary token with the reverse direction.
void	execute(MergerContext context) Executes synchronization operation.
MergeDirection	getDirection() The direction of this token.
int	getSortingWeight()
String	getTokenName()
String	getTokenValue()
boolean	isEmpty()

Methods inherited from interface java.lang.Comparable

compareTo

Method Detail

getTokenName

String getTokenName()

getTokenValue

String getTokenValue()

getSortingWeight

int getSortingWeight()

getDirection

MergeDirection getDirection()

The direction of this token. One of MergeDirection.TO_DB or MergeDirection.TO_MODEL

createReverse

MergerToken createReverse(MergerTokenFactory factory)

Create a complimentary token with the reverse direction. AddColumn in one direction becomes DropColumn in the other direction.

Not all tokens are reversible.

execute

void execute(MergerContext context)

Executes synchronization operation.

Parameters:

context - merge operation context.

isEmpty

boolean isEmpty()