| Package | Description | 
|---|---|
| org.apache.cayenne.access | Contains classes that make up Cayenne ORM stack. | 
| org.apache.cayenne.query | Defines standard queries supported by Cayenne and extension mechanism to create
custom queries. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | DataDomainDataDomain performs query routing functions in Cayenne. | 
| class  | DataNodeAn abstraction of a single physical data storage. | 
| Modifier and Type | Method and Description | 
|---|---|
| QueryEngine | QueryRouter. engineForDataMap(DataMap map)Returns a QueryEngine that is configured to handle a given DataMap. | 
| QueryEngine | QueryRouter. engineForName(String name)Returns a QueryEngine for a given name. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | QueryRouter. route(QueryEngine engine,
     Query query,
     Query substitutedQuery)A callback method that allows a query to set its preferred engine during the
 routing phase. | 
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