Module org.seasar.doma.core

Package org.seasar.doma.internal.jdbc.command

Class OptionalSingleResultCallback<TARGET>

java.lang.Object

org.seasar.doma.internal.jdbc.command.OptionalSingleResultCallback<TARGET>

All Implemented Interfaces:

IterationCallback<TARGET,Optional<TARGET>>

public class OptionalSingleResultCallback<TARGET>
extends Object
implements IterationCallback<TARGET,Optional<TARGET>>

Field Summary

Fields

Modifier and Type	Field	Description
protected final Function<TARGET,Optional<TARGET>>	mapper

Constructor Summary

Constructors

Constructor	Description
OptionalSingleResultCallback()
OptionalSingleResultCallback(Function<TARGET,Optional<TARGET>> mapper)

Method Summary

Modifier and Type	Method	Description
Optional<TARGET>	defaultResult()	Returns the default value.
Optional<TARGET>	iterate(TARGET target, IterationContext context)	Invoked from a ResultSet iteration process.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.seasar.doma.jdbc.IterationCallback

postIterate

Field Details

mapper

protected final Function<TARGET,Optional<TARGET>> mapper

Constructor Details

OptionalSingleResultCallback

public OptionalSingleResultCallback()

OptionalSingleResultCallback

public OptionalSingleResultCallback(Function<TARGET,Optional<TARGET>> mapper)

Method Details

defaultResult

public Optional<TARGET> defaultResult()

Description copied from interface: IterationCallback

Returns the default value.

Specified by:

defaultResult in interface IterationCallback<TARGET,Optional<TARGET>>

Returns:

the default value

iterate

public Optional<TARGET> iterate(TARGET target,
 IterationContext context)

Description copied from interface: IterationCallback

Invoked from a ResultSet iteration process.

Specified by:

iterate in interface IterationCallback<TARGET,Optional<TARGET>>

Parameters:

target - the object that is mapped to a row of ResultSet

context - the execution context

Returns:

the result type