spring InterruptibleBatchPreparedStatementSetter 源码
spring InterruptibleBatchPreparedStatementSetter 代码
文件路径：/spring-jdbc/src/main/java/org/springframework/jdbc/core/InterruptibleBatchPreparedStatementSetter.java
/*
* Copyright 2002-2012 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.jdbc.core;
/**
* Extension of the {@link BatchPreparedStatementSetter} interface,
* adding a batch exhaustion check.
*
* <p>This interface allows you to signal the end of a batch rather than
* having to determine the exact batch size upfront. Batch size is still
* being honored but it is now the maximum size of the batch.
*
* <p>The {@link #isBatchExhausted} method is called after each call to
* {@link #setValues} to determine whether there were some values added,
* or if the batch was determined to be complete and no additional values
* were provided during the last call to {@code setValues}.
*
* <p>Consider extending the
* {@link org.springframework.jdbc.core.support.AbstractInterruptibleBatchPreparedStatementSetter}
* base class instead of implementing this interface directly, using a single
* {@code setValuesIfAvailable} callback method that checks for available
* values and sets them, returning whether values have actually been provided.
*
* @author Thomas Risberg
* @author Juergen Hoeller
* @since 2.0
* @see JdbcTemplate#batchUpdate(String, BatchPreparedStatementSetter)
* @see org.springframework.jdbc.core.support.AbstractInterruptibleBatchPreparedStatementSetter
*/
public interface InterruptibleBatchPreparedStatementSetter extends BatchPreparedStatementSetter {
/**
* Return whether the batch is complete, that is, whether there were no
* additional values added during the last {@code setValues} call.
* <p><b>NOTE:</b> If this method returns {@code true}, any parameters
* that might have been set during the last {@code setValues} call will
* be ignored! Make sure that you set a corresponding internal flag if you
* detect exhaustion <i>at the beginning</i> of your {@code setValues}
* implementation, letting this method return {@code true} based on the flag.
* @param i index of the statement we're issuing in the batch, starting from 0
* @return whether the batch is already exhausted
* @see #setValues
* @see org.springframework.jdbc.core.support.AbstractInterruptibleBatchPreparedStatementSetter#setValuesIfAvailable
*/
boolean isBatchExhausted(int i);
}
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