# Uses of Class
org.apache.cayenne.DataRow

Packages that use DataRow
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.access.event
org.apache.cayenne.map
Contains O/R mapping classes that store relational database metadata information and map it to Java classes.
org.apache.cayenne.query
Defines standard queries supported by Cayenne and extension mechanism to create custom queries.

- ## Uses of DataRow in org.apache.cayenne

  Methods in org.apache.cayenne that return DataRow
  Modifier and Type
  Method
  Description
  `DataRow`
  DataRow.`applyDiff(DataRow diff)`
  Builds a new DataRow, merging changes from `diff` parameter with data contained in this DataRow.
  `DataRow`
  DataRow.`createDiff(DataRow row)`
  Creates a DataRow that contains only the keys that have values that differ between this object and `row` parameter.
  Methods in org.apache.cayenne with parameters of type DataRow
  Modifier and Type
  Method
  Description
  `DataRow`
  DataRow.`applyDiff(DataRow diff)`
  Builds a new DataRow, merging changes from `diff` parameter with data contained in this DataRow.
  `DataRow`
  DataRow.`createDiff(DataRow row)`
  Creates a DataRow that contains only the keys that have values that differ between this object and `row` parameter.

- ## Uses of DataRow in org.apache.cayenne.access

  Fields in org.apache.cayenne.access with type parameters of type DataRow
  Modifier and Type
  Field
  Description
  `protected ConcurrentMap<ObjectId,DataRow>`
  DataRowStore.`snapshots`
  Methods in org.apache.cayenne.access that return DataRow
  Modifier and Type
  Method
  Description
  `DataRow`
  DataContext.`currentSnapshot(Persistent object)`
  Returns a DataRow reflecting current, possibly uncommitted, object state.
  `DataRow`
  DataRowStore.`getCachedSnapshot(ObjectId oid)`
  Returns cached snapshot or null if no snapshot is currently cached for the given ObjectId.
  `DataRow`
  ObjectStore.`getCachedSnapshot(ObjectId oid)`
  Returns a snapshot for ObjectId from the underlying snapshot cache.
  `DataRow`
  ObjectStore.`getSnapshot(ObjectId oid)`
  Returns a snapshot for ObjectId from the underlying snapshot cache.
  Methods in org.apache.cayenne.access with parameters of type DataRow
  Modifier and Type
  Method
  Description
  `<T extends Persistent>
  T`
  DataContext.`objectFromDataRow(Class<T> objectClass, DataRow dataRow)`
  Creates a DataObject from DataRow.
  `DataObject`
  DataContext.`objectFromDataRow(String entityName, DataRow dataRow)`
  Creates a DataObject from DataRow.
  `boolean`
  DataContextDelegate.`shouldMergeChanges(DataObject object, DataRow snapshotInStore)`
  Invoked by parent DataContext whenever an object change is detected.
  Method parameters in org.apache.cayenne.access with type arguments of type DataRow
  Modifier and Type
  Method
  Description
  `List`
  DataContext.`objectsFromDataRows(ClassDescriptor descriptor, List<? extends DataRow> dataRows)`
  Converts a list of DataRows to a List of DataObject registered with this DataContext.
  `void`
  DataRowStore.`processSnapshotChanges(Object postedBy, Map<ObjectId,DataRow> updatedSnapshots, Collection<ObjectId> deletedSnapshotIds, Collection<ObjectId> invalidatedSnapshotIds, Collection<ObjectId> indirectlyModifiedIds)`
  Processes changes made to snapshots.

- ## Uses of DataRow in org.apache.cayenne.access.event

  Fields in org.apache.cayenne.access.event with type parameters of type DataRow
  Modifier and Type
  Field
  Description
  `protected Map<ObjectId,DataRow>`
  SnapshotEvent.`modifiedDiffs`
  Methods in org.apache.cayenne.access.event that return types with arguments of type DataRow
  Modifier and Type
  Method
  Description
  `Map<ObjectId,DataRow>`
  SnapshotEvent.`getModifiedDiffs()`
  Constructor parameters in org.apache.cayenne.access.event with type arguments of type DataRow
  Modifier
  Constructor
  Description
  ``
  `SnapshotEvent(Object source, Object postedBy, Map<ObjectId,DataRow> modifiedDiffs, Collection<ObjectId> deletedIds, Collection<ObjectId> invalidatedIds, Collection<ObjectId> indirectlyModifiedIds)`

- ## Uses of DataRow in org.apache.cayenne.map

  Methods in org.apache.cayenne.map with parameters of type DataRow
  Modifier and Type
  Method
  Description
  `ObjEntity`
  EntityInheritanceTree.`entityMatchingRow(DataRow row)`
  Returns the deepest possible entity in the inheritance hierarchy that can be used to create objects from a given DataRow.

- ## Uses of DataRow in org.apache.cayenne.query

  Methods in org.apache.cayenne.query that return types with arguments of type DataRow
  Modifier and Type
  Method
  Description
  `static ObjectSelect<DataRow>`
  ObjectSelect.`dataRowQuery(Class<?> entityType)`
  Creates a ObjectSelect that fetches data for an `ObjEntity` determined from a provided class.
  `static ObjectSelect<DataRow>`
  ObjectSelect.`dataRowQuery(Class<?> entityType, Expression expression)`
  Creates a ObjectSelect that fetches data for an `ObjEntity` determined from a provided class and uses provided expression for its qualifier.
  `static ProcedureCall<DataRow>`
  ProcedureCall.`dataRowQuery(String procedure)`
  Creates procedure call returning data rows using name of stored procedure defined in the mapping file.
  `static SelectById<DataRow>`
  SelectById.`dataRowQuery(Class<?> entityType, Object id)`
  `static SelectById<DataRow>`
  SelectById.`dataRowQuery(Class<?> entityType, Object firstId, Object... otherIds)`
  `static SelectById<DataRow>`
  SelectById.`dataRowQuery(Class<?> entityType, Map<String,?> id)`
  `static SelectById<DataRow>`
  SelectById.`dataRowQuery(Class<?> entityType, Map<String,?> firstId, Map<String,?>... otherIds)`
  `static SelectById<DataRow>`
  SelectById.`dataRowQuery(ObjectId id)`
  `static SelectById<DataRow>`
  SelectById.`dataRowQuery(ObjectId firstId, ObjectId... otherIds)`
  `static SelectQuery<DataRow>`
  SelectQuery.`dataRowQuery(Class<?> rootClass)`
  Deprecated.
  `static SelectQuery<DataRow>`
  SelectQuery.`dataRowQuery(Class<?> rootClass, Expression qualifier)`
  Deprecated.
  Creates a SelectQuery that selects DataRows that correspond to a given persistent class that match supplied qualifier.
  `static SelectQuery<DataRow>`
  SelectQuery.`dataRowQuery(Class<?> rootClass, Expression qualifier, List<Ordering> orderings)`
  Deprecated.
  `static SQLSelect<DataRow>`
  SQLSelect.`dataRowQuery(String sql)`
  Creates a query that selects DataRows and uses default routing.
  `static SQLSelect<DataRow>`
  SQLSelect.`dataRowQuery(String sql, Class<?>... types)`
  Creates a query that selects DataRows and uses default routing.
  `static SQLSelect<DataRow>`
  SQLSelect.`dataRowQuery(String dataMapName, String sql)`
  Creates a query that selects DataRows and uses routing based on the provided DataMap name.
  `static SQLSelect<DataRow>`
  SQLSelect.`dataRowQuery(String dataMapName, String sql, Class<?>... types)`
  Creates a query that selects DataRows and uses routing based on the provided DataMap name.
  `static ObjectSelect<DataRow>`
  ObjectSelect.`dbQuery(String dbEntityName)`
  Creates a ObjectSelect that fetches DataRows for a `DbEntity` determined from provided "dbEntityName".
  `static ObjectSelect<DataRow>`
  ObjectSelect.`dbQuery(String dbEntityName, Expression expression)`
  Creates a ObjectSelect that fetches DataRows for a `DbEntity` determined from provided "dbEntityName" and uses provided expression for its qualifier.
  `ObjectSelect<DataRow>`
  ObjectSelect.`fetchDataRows()`
  Forces query to fetch DataRows.