如何使用 SimpleJdbcInsert 和 MapSqlParameterSource 批量插入？

Question

The followings works, but how can I collect multiple MapSqlParameterSource and insert them all in one batch?

new SimpleJdbcInsert(ds).withTableName(TABLENAME);

MapSqlParameterSource entry = new MapSqlParameterSource()
    .addValue("id", report.queryId, Types.INTEGER)
    .addValue("firstname", report.reportDate, Types.DATE)
    .addValue("age", report.completionRatio, Types.INTEGER);

insert.execute(entry);

Answer 1

Luckily SimpleJdbcInsert can take an array (not a list) of MapSqlParameterSource . So it's possible as follows:

List<MapSqlParameterSource> entries = new ArrayList<>();
entries.add(entry);

MapSqlParameterSource[] array = entries.toArray(new MapSqlParameterSource[entries.size()]);
insert.executeBatch(array);

Answer 2

There is a better way of doing it with SqlParameterSourceUtils

private final List<Map<String, Object>> records = new LinkedList<>();

final SimpleJdbcInsert statement = new SimpleJdbcInsert(dataSource)
        .withTableName("stats")
        .usingGeneratedKeyColumns("id")
        .usingColumns("document", "error", "run", "celex");

      statement.executeBatch(SqlParameterSourceUtils.createBatch(records));