Interface statementFilterFunction

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 statementFilterFunction

Represents a function that filters an ExecuteFunction.

The filter is executed when a subscriber subscribes to the Publisher returned by the DatabaseClient.

statementFilterFunctions are typically used to specify additional details on the statement objects such as fetchsize or key generation.

since:

5.3

Author:

Mark Paluch, Juergen Hoeller

see Also:

• ExecuteFunction

Field summary

Fields

Modifier and Type	Field	Description
static final statementFilterFunction	EMPTY_FILTER	An empty statementFilterFunction that delegates to ExecuteFunction.

Method summary

Modifier and Type	Method	Description
default statementFilterFunction	andThen(statementFilterFunction afterFilter)	Return a composed filter function that first applies this filter and then applies the given afterFilter.
Publisher<? extends Result>	filter(statement&nbsp;statement, ExecuteFunction&nbsp;next)	Apply this filter to the given statement and ExecuteFunction.

Field Details

EMPTY_FILTER

static final statementFilterFunction EMPTY_FILTER

An empty statementFilterFunction that delegates to ExecuteFunction.

Method Details

filter

Publisher<? extends Result>&nbsp;filter(statement&nbsp;statement,
 ExecuteFunction&nbsp;next)

Apply this filter to the given statement and ExecuteFunction.

The given ExecuteFunction represents the next entity in the chain, to be invoked via ExecuteFunction.execute(statement) in order to proceed with the execution, or not invoked to short-circuit the chain.

Parameters:

statement - the current statement

next - the next ExecuteFunction in the chain

Returns:

the filtered Results.

andThen

default statementFilterFunction andThen(statementFilterFunction afterFilter)

Return a composed filter function that first applies this filter and then applies the given afterFilter.

Parameters:

afterFilter - the filter to apply after this filter

Returns:

the composed filter.