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https://issues.apache.org/jira/browse/ARROW-17629?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Li reassigned ARROW-17629:
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Assignee: Igor Suhorukov
> [Java] Bind DB column to Arrow Map type in JdbcToArrowUtils
> -----------------------------------------------------------
>
> Key: ARROW-17629
> URL: https://issues.apache.org/jira/browse/ARROW-17629
> Project: Apache Arrow
> Issue Type: New Feature
> Components: Java
> Affects Versions: 9.0.0
> Reporter: Igor Suhorukov
> Assignee: Igor Suhorukov
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h
> Remaining Estimate: 0h
>
> I want to convert into Apache Arrow IPC data format in Java existing data
> from PostgreSQL database.
> [JdbcToArrowUtils.jdbcToArrowSchema|https://github.com/apache/arrow/blob/50a7d15dfb4cbc4dd449ff2bb3ba2b1cde62a3ab/java/adapter/jdbc/src/main/java/org/apache/arrow/adapter/jdbc/JdbcToArrowUtils.java#L111]
> allows do it for scalar types and arrays.
> org.postgresql.jdbc.PgResultSetMetaData instance from PostgreSQL jdbc driver
> provide all required info related to column types
> pgResultSetMetaData.getColumnTypeName().
> But looks like current implementation support only
> [ArrowType.List|https://github.com/apache/arrow/blob/50a7d15dfb4cbc4dd449ff2bb3ba2b1cde62a3ab/java/adapter/jdbc/src/main/java/org/apache/arrow/adapter/jdbc/JdbcToArrowUtils.java#L266]
> with no support of Map type mapping in code
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