spring ExecuteFunction 源码
spring ExecuteFunction 代码
文件路径：/spring-r2dbc/src/main/java/org/springframework/r2dbc/core/ExecuteFunction.java
/*
* Copyright 2002-2020 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.r2dbc.core;
import java.util.function.BiFunction;
import io.r2dbc.spi.Result;
import io.r2dbc.spi.Statement;
import org.reactivestreams.Publisher;
/**
* Represents a function that executes a {@link Statement} for a (delayed)
* {@link Result} stream.
*
* <p>Note that discarded {@link Result} objects must be consumed according
* to the R2DBC spec via either {@link Result#getRowsUpdated()} or
* {@link Result#map(BiFunction)}.
*
* <p>Typically, implementations invoke the {@link Statement#execute()} method
* to initiate execution of the statement object.
*
* For example:
* <p><pre class="code">
* DatabaseClient.builder()
* .executeFunction(statement -> statement.execute())
* .build();
* </pre>
*
* @author Mark Paluch
* @since 5.3
* @see Statement#execute()
*/
@FunctionalInterface
public interface ExecuteFunction {
/**
* Execute the given {@link Statement} for a stream of {@link Result} objects.
* @param statement the request to execute
* @return the delayed result stream
*/
Publisher<? extends Result> execute(Statement statement);
}
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