[英]batch update using jdbcTemplate in spring
我已經看到了使用ArrayList進行如下批量更新的代碼:
@Override
public void saveBatch(final List<Employee> employeeList) {
final int batchSize = 500;
for (int j = 0; j < employeeList.size(); j += batchSize) {
final List<Employee> batchList = employeeList.subList(j, j + batchSize > employeeList.size() ? employeeList.size() : j + batchSize);
getJdbcTemplate().batchUpdate(QUERY_SAVE,
new BatchPreparedStatementSetter() {
@Override
public void setValues(PreparedStatement ps, int i)
throws SQLException {
Employee employee = batchList.get(i);
ps.setString(1, employee.getFirstname());
ps.setString(2, employee.getLastname());
ps.setString(3, employee.getEmployeeIdOnSourceSystem());
}
@Override
public int getBatchSize() {
return batchList.size();
}
});
}
}
但是,如果我使用如下所示的Hashmap: HashMap<String, VerifyPaymentRO> verifyPaymentInfoMap
VerifyPaymentRO
是Java bean
如何使用它來更新記錄?
只需從地圖值中創建List<?>
,就可以使用已發布的相同代碼:
List<VerifyPaymentRO> verifyPaymentList = new ArrayList<>(verifyPaymentInfoMap.values());
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