Examples with PartitionTransformSpec org.apache.hadoop.hive.ql.parse.PartitionTransformSpec used on opensource projects

Example 6 with PartitionTransformSpec

use of org.apache.hadoop.hive.ql.parse.PartitionTransformSpec in project hive by apache.

the class IcebergTableUtil method updateSpec.

public static void updateSpec(Configuration configuration, Table table) {
    // get the new partition transform spec
    PartitionSpec newPartitionSpec = spec(configuration, table.schema());
    if (newPartitionSpec == null) {
        LOG.debug("Iceberg Partition spec is not updated due to empty partition spec definition.");
        return;
    }
    // delete every field from the old partition spec
    UpdatePartitionSpec updatePartitionSpec = table.updateSpec().caseSensitive(false);
    table.spec().fields().forEach(field -> updatePartitionSpec.removeField(field.name()));
    List<PartitionTransformSpec> partitionTransformSpecList = SessionStateUtil.getResource(configuration, hive_metastoreConstants.PARTITION_TRANSFORM_SPEC).map(o -> (List<PartitionTransformSpec>) o).orElseGet(() -> null);
    partitionTransformSpecList.forEach(spec -> {
        switch(spec.getTransformType()) {
            case IDENTITY:
                updatePartitionSpec.addField(spec.getColumnName());
                break;
            case YEAR:
                updatePartitionSpec.addField(Expressions.year(spec.getColumnName()));
                break;
            case MONTH:
                updatePartitionSpec.addField(Expressions.month(spec.getColumnName()));
                break;
            case DAY:
                updatePartitionSpec.addField(Expressions.day(spec.getColumnName()));
                break;
            case HOUR:
                updatePartitionSpec.addField(Expressions.hour(spec.getColumnName()));
                break;
            case TRUNCATE:
                updatePartitionSpec.addField(Expressions.truncate(spec.getColumnName(), spec.getTransformParam().get()));
                break;
            case BUCKET:
                updatePartitionSpec.addField(Expressions.bucket(spec.getColumnName(), spec.getTransformParam().get()));
                break;
        }
    });
    updatePartitionSpec.commit();
}