Examples with RowField org.apache.flink.table.types.logical.RowType.RowField used on opensource projects

Example 6 with RowField

use of org.apache.flink.table.types.logical.RowType.RowField in project flink by apache.

the class LogicalTypeUtils method toRowType.

/**
 * Converts any logical type to a row type. Composite types are converted to a row type. Atomic
 * types are wrapped into a field.
 */
public static RowType toRowType(LogicalType t) {
    switch(t.getTypeRoot()) {
        case ROW:
            return (RowType) t;
        case STRUCTURED_TYPE:
            final StructuredType structuredType = (StructuredType) t;
            final List<RowField> fields = structuredType.getAttributes().stream().map(attribute -> new RowField(attribute.getName(), attribute.getType(), attribute.getDescription().orElse(null))).collect(Collectors.toList());
            return new RowType(structuredType.isNullable(), fields);
        case DISTINCT_TYPE:
            return toRowType(((DistinctType) t).getSourceType());
        default:
            return RowType.of(t);
    }
}

Example 7 with RowField

use of org.apache.flink.table.types.logical.RowType.RowField in project flink by apache.

the class DynamicSourceUtils method createProducedType.

/**
 * Returns the {@link DataType} that a source should produce as the input into the runtime.
 *
 * <p>The format looks as follows: {@code PHYSICAL COLUMNS + METADATA COLUMNS}
 *
 * <p>Physical columns use the table schema's name. Metadata column use the metadata key as
 * name.
 */
public static RowType createProducedType(ResolvedSchema schema, DynamicTableSource source) {
    final Map<String, DataType> metadataMap = extractMetadataMap(source);
    final Stream<RowField> physicalFields = ((RowType) schema.toPhysicalRowDataType().getLogicalType()).getFields().stream();
    final Stream<RowField> metadataFields = createRequiredMetadataKeys(schema, source).stream().map(k -> new RowField(k, metadataMap.get(k).getLogicalType()));
    final List<RowField> rowFields = Stream.concat(physicalFields, metadataFields).collect(Collectors.toList());
    return new RowType(false, rowFields);
}