## Uses of Interface
org.apache.cayenne.access.OperationObserver

- Packages that use OperationObserver
  Package | Description
  --- | ---
  org.apache.cayenne.access | Contains classes that make up Cayenne ORM stack.
  org.apache.cayenne.access.jdbc | Contains classes that handle JDBC interactions.
  org.apache.cayenne.access.util |
  org.apache.cayenne.dba.sqlserver | MS SQLServer DbAdapter.
  org.apache.cayenne.query | Defines standard queries supported by Cayenne and extension mechanism to create custom queries.

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

    Methods in org.apache.cayenne.access with parameters of type OperationObserver
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | DataDomain.`performQueries​(Collection<? extends Query> queries, OperationObserver callback)` | Routes queries to appropriate DataNodes for execution.
    `void` | DataNode.`performQueries​(Collection<? extends Query> queries, OperationObserver callback)` | Runs queries using Connection obtained from internal DataSource.
    `void` | QueryEngine.`performQueries​(Collection<? extends Query> queries, OperationObserver resultConsumer)` | Executes a list of queries wrapping them in its own transaction.

  - ### Uses of OperationObserver in org.apache.cayenne.access.jdbc

    Methods in org.apache.cayenne.access.jdbc with parameters of type OperationObserver
    Modifier and Type | Method | Description
    --- | --- | ---
    `protected void` | SQLTemplateAction.`execute​(Connection connection, OperationObserver callback, SQLStatement compiled, Collection<Number> updateCounts)` |
    `void` | BatchAction.`performAction​(Connection connection, OperationObserver observer)` |
    `void` | EJBQLAction.`performAction​(Connection connection, OperationObserver observer)` |
    `void` | ProcedureAction.`performAction​(Connection connection, OperationObserver observer)` |
    `void` | SelectAction.`performAction​(Connection connection, OperationObserver observer)` |
    `void` | SQLTemplateAction.`performAction​(Connection connection, OperationObserver callback)` | Runs a SQLTemplate query, collecting all results.
    `protected void` | BatchAction.`processGeneratedKeys​(Statement statement, OperationObserver observer, BatchQueryRow row)` | Implements generated keys extraction supported in JDBC 3.0 specification.
    `protected void` | SQLTemplateAction.`processSelectResult​(SQLStatement compiled, Connection connection, Statement statement, ResultSet resultSet, OperationObserver callback, long startTime)` |
    `protected void` | ProcedureAction.`readProcedureOutParameters​(CallableStatement statement, OperationObserver delegate)` | Helper method that reads OUT parameters of a CallableStatement.
    `protected void` | BaseSQLAction.`readResultSet​(ResultSet resultSet, RowDescriptor descriptor, Query query, OperationObserver delegate)` | Helper method to process a ResultSet.
    `protected void` | BatchAction.`runAsBatch​(Connection con, BatchTranslator translator, OperationObserver delegate)` |
    `protected void` | BatchAction.`runAsIndividualQueries​(Connection connection, BatchTranslator translator, OperationObserver delegate, boolean generatesKeys)` | Executes batch as individual queries over the same prepared statement.

  - ### Uses of OperationObserver in org.apache.cayenne.access.util

    Classes in org.apache.cayenne.access.util that implement OperationObserver
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `DefaultOperationObserver` | Simple implementation of OperationObserver interface.
    `class` | `DoNothingOperationObserver` | A very simple observer that does nothing with provided data, and rethrows any reported exceptions.
    `class` | `IteratedSelectObserver` | OperationObserver that is used to track the execution of SelectQueries with results returned as ResultIterator.

  - ### Uses of OperationObserver in org.apache.cayenne.dba.sqlserver

    Methods in org.apache.cayenne.dba.sqlserver with parameters of type OperationObserver
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | SQLServerBatchAction.`performAction​(Connection connection, OperationObserver observer)` |
    `void` | SQLServerProcedureAction.`performAction​(Connection connection, OperationObserver observer)` |

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

    Methods in org.apache.cayenne.query with parameters of type OperationObserver
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | SQLAction.`performAction​(Connection connection, OperationObserver observer)` | Executes a query using a strategy defined by the implementation.