Package guru.mikelue.jdut.jdbc

Interface JdbcFunction<T,R>

Type Parameters:

T - The type of fed object

R - The type of returned object

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface JdbcFunction<T,R>

Likes the Function interface with throwing of SQLException.

See JDBC Function for usage of this lambda expression.

See Also:

JdbcRunnable, JdbcSupplier, JdbcVoidFunction, SQLExceptionConvert

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	JdbcFunction.SurroundOperator<T,R>	This operator is used to surround fed JdbcFunction by the implementation of surrounding.

Method Summary

Modifier and Type	Method	Description
R	applyJdbc(T jdbcObject)	Gives object of type <R> object by fed object of type <T>.
default Function<T,R>	asFunction()	Converts this expression to Function.
default <E extends RuntimeException> Function<T,R>	asFunction(SQLExceptionConvert<E> exceptionConvert)	Converts this expression to Function, with customized SQLExceptionConvert.
default JdbcFunction<T,R>	surroundedBy(JdbcFunction.SurroundOperator<T,R> surroundOperator)	Surrounds this function by JdbcFunction.SurroundOperator.

Method Detail

asFunction

default Function<T,R> asFunction()

Converts this expression to Function.

Returns:

The function with SQLExceptionConvert::runtimeException

See Also:

asFunction(SQLExceptionConvert)

asFunction

default <E extends RuntimeException> Function<T,R> asFunction(SQLExceptionConvert<E> exceptionConvert)

Converts this expression to Function, with customized SQLExceptionConvert.

Type Parameters:

E - The type of exception to be generated by

Parameters:

exceptionConvert - The instance for converting SQLException to exception of type <E>

Returns:

The function with SQLExceptionConvert

See Also:

asFunction()

surroundedBy

default JdbcFunction<T,R> surroundedBy(JdbcFunction.SurroundOperator<T,R> surroundOperator)

Surrounds this function by JdbcFunction.SurroundOperator.

Parameters:

surroundOperator - The operator to build a new function to surround current function

Returns:

The surround function of result

See Also:

JdbcFunction.SurroundOperator

applyJdbc

R applyJdbc(T jdbcObject)
     throws SQLException

Gives object of type <R> object by fed object of type <T>.

Parameters:

jdbcObject - The object to be fed

Returns:

The generated object

Throws:

SQLException - eliminate the exception block of JDBC