OperationHints

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Class

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org.objectstyle.cayenne.access
Interface OperationHints

All Known Subinterfaces:: OperationObserver

All Known Implementing Classes:: DefaultOperationObserver, org.objectstyle.cayenne.access.util.DefaultOperationObserver

public interface OperationHints

Defines an API that allows QueryEngine to obtain information about query execution. Defines query running strategies, logging, etc.

Method Summary

org.apache.log4j.Level getLoggingLevel()
          Returns a log level level that should be used when logging query execution.

boolean isIteratedResult()
          Returns true to indicate that any results of a select operation should be returned as a ResultIterator.

boolean useAutoCommit()
          DataNode executing a list of statements will consult OperationHints about transactional behavior by calling this method.

Method Detail

getLoggingLevel

public org.apache.log4j.Level getLoggingLevel()

Returns a log level level that should be used when logging query execution.

useAutoCommit

public boolean useAutoCommit()

DataNode executing a list of statements will consult OperationHints about transactional behavior by calling this method.

If this method returns true, each statement in a batch will be run as a separate transaction.
If this method returns false, the whole batch will be wrapped in a transaction.

isIteratedResult

public boolean isIteratedResult()

Returns true to indicate that any results of a select operation should be returned as a ResultIterator. false is returned when the results are expected as a list.