| Package | Description | 
|---|---|
| org.apache.cayenne | Contains persistence APIs directly accessible by users. | 
| 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 | Method and Description | 
|---|---|
| <T> ResultBatchIterator<T> | BaseContext. batchIterator(Select<T> query,
             int size) | 
| <T> ResultBatchIterator<T> | ObjectContext. batchIterator(Select<T> query,
             int size)Creates a ResultBatchIterator based on the provided query and batch size. | 
| <T> void | BaseContext. iterate(Select<T> query,
       ResultIteratorCallback<T> callback) | 
| <T> void | ObjectContext. iterate(Select<T> query,
       ResultIteratorCallback<T> callback)Creates a ResultIterator based on the provided query and passes it to a
 callback for processing. | 
| abstract <T> ResultIterator<T> | BaseContext. iterator(Select<T> query) | 
| <T> ResultIterator<T> | CayenneContext. iterator(Select<T> query)This method simply returns an iterator over a list of selected objects. | 
| <T> ResultIterator<T> | ObjectContext. iterator(Select<T> query)Creates a ResultIterator based on the provided query. | 
| <T> List<T> | BaseContext. select(Select<T> query) | 
| <T> List<T> | ObjectContext. select(Select<T> query)Executes a selecting query, returning a list of persistent objects or
 data rows. | 
| <T> T | BaseContext. selectFirst(Select<T> query) | 
| <T> T | ObjectContext. selectFirst(Select<T> query)Selects a single object using provided query. | 
| <T> T | BaseContext. selectOne(Select<T> query) | 
| <T> T | ObjectContext. selectOne(Select<T> query)Executes a selecting query, returning either NULL if query matched no
 objects, or a single object. | 
| Modifier and Type | Method and Description | 
|---|---|
| <T> ResultIterator<T> | DataContext. iterator(Select<T> query) | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ColumnSelect<T>A helper builder for queries selecting individual properties based on the root object. | 
| class  | FluentSelect<T>Base class for  ObjectSelectandColumnSelect | 
| class  | MappedSelect<T>A query that represents a named parameterized selecting query stored in the mapping. | 
| class  | ObjectSelect<T>A selecting query providing chainable API. | 
| class  | PrefetchSelectQueryA SelectQuery to perform a prefetch based on another query. | 
| class  | SelectById<T>A query to select single objects by id. | 
| class  | SelectQuery<T>A query that selects persistent objects of a certain type or "raw data" (aka
 DataRows). | 
| class  | SQLSelect<T>A selecting query based on raw SQL and featuring fluent API. | 
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