spring-batch ColumnMapItemPreparedStatementSetter 源码
spring-batch ColumnMapItemPreparedStatementSetter 代码
文件路径：/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/database/support/ColumnMapItemPreparedStatementSetter.java
/*
* Copyright 2006-2007 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.batch.item.database.support;
import org.springframework.batch.item.database.ItemPreparedStatementSetter;
import org.springframework.jdbc.core.ColumnMapRowMapper;
import org.springframework.jdbc.core.SqlTypeValue;
import org.springframework.jdbc.core.StatementCreatorUtils;
import org.springframework.util.Assert;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Map;
/**
* <p>
* Implementation of the {@link ItemPreparedStatementSetter} interface that assumes all
* keys are contained within a {@link Map} with the column name as the key. It assumes
* nothing about ordering, and assumes that the order the entry set can be iterated over
* is the same as the PreparedStatement should be set.
* </p>
*
* @author Lucas Ward
* @author Dave Syer
* @see ItemPreparedStatementSetter
* @see ColumnMapRowMapper
*/
public class ColumnMapItemPreparedStatementSetter implements ItemPreparedStatementSetter<Map<String, Object>> {
@Override
public void setValues(Map<String, Object> item, PreparedStatement ps) throws SQLException {
Assert.isInstanceOf(Map.class, item, "Input to map PreparedStatement parameters must be of type Map.");
int counter = 1;
for (Object value : item.values()) {
StatementCreatorUtils.setParameterValue(ps, counter, SqlTypeValue.TYPE_UNKNOWN, value);
counter++;
}
}
}
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