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## Package org.apache.cayenne.merge

Interface Summary
MergerContext | An object passed as an argument to `MergerToken.execute(MergerContext)`s that a `MergerToken` can do its work.
MergerToken |
ModelMergeDelegate | A interface used to tell about modifications performed on the model by `MergerToken` with `MergeDirection.TO_MODEL`
ValueForNullProvider |

Class Summary
AbstractToDbToken | Common abstract superclass for all `MergerToken`s going from the model to the database.
AbstractToModelToken | Common abstract superclass for all `MergerToken`s going from the database to the model.
AddColumnToDb |
AddColumnToModel | A `MergerToken` to add a `DbAttribute` to a `DbEntity`.
AddRelationshipToDb |
AddRelationshipToModel |
CreateTableToDb |
CreateTableToModel | A `MergerToken` to add a `DbEntity` to a `DataMap`
DbMerger | Traverse a `DataNode` and a `DataMap` and create a group of `MergerToken`s to alter the `DataNode` data store to match the `DataMap`.
DefaultValueForNullProvider |
DropColumnToDb |
DropColumnToModel | A `MergerToken` to remove a `DbAttribute` from a `DbEntity`.
DropRelationshipToDb |
DropRelationshipToModel |
DropTableToDb |
DropTableToModel | A `MergerToken` to remove a `DbEntity` from a `DataMap`.
ExecutingMergerContext |
MergerFactory | All `MergerToken`s should be created from a `MergerFactory` obtained from `DbAdapter.mergerFactory()` so that the `DbAdapter` are able to provide `MergerToken` subclasses.
SetAllowNullToDb | A `MergerToken` to add a "allow null" clause to a column.
SetAllowNullToModel | A `MergerToken` to set the mandatory field of a `DbAttribute` to false
SetColumnTypeToDb | An `MergerToken` to use to set type, length and precision.
SetColumnTypeToModel | A `MergerToken` that modifies one original `DbAttribute` to match another new `DbAttribute`s type, maxLength and precision.
SetNotNullToDb | A `MergerToken` to add a "not null" clause to a column.
SetNotNullToModel | A `MergerToken` to set the mandatory field of a `DbAttribute` to true
SetPrimaryKeyToDb |
SetPrimaryKeyToModel |
SetValueForNullToDb |

Enum Summary
MergeDirection | Represent a merge direction that can be one of two.

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