Java Code Examples for org.apache.flink.table.types.logical.TinyIntType#PRECISION

@Override
public Integer visit(TinyIntType tinyIntType) {
	return TinyIntType.PRECISION;
}
 

/**
 * Try to derive column width based on column types.
 * If result set is not small enough to be stored in java heap memory,
 * we can't determine column widths based on column values.
 */
public static int[] columnWidthsByType(
		List<TableColumn> columns,
		int maxColumnWidth,
		String nullColumn,
		@Nullable String rowKindColumn) {
	// fill width with field names first
	final int[] colWidths = columns.stream()
			.mapToInt(col -> col.getName().length())
			.toArray();

	// determine proper column width based on types
	for (int i = 0; i < columns.size(); ++i) {
		LogicalType type = columns.get(i).getType().getLogicalType();
		int len;
		switch (type.getTypeRoot()) {
			case TINYINT:
				len = TinyIntType.PRECISION + 1; // extra for negative value
				break;
			case SMALLINT:
				len = SmallIntType.PRECISION + 1; // extra for negative value
				break;
			case INTEGER:
				len = IntType.PRECISION + 1; // extra for negative value
				break;
			case BIGINT:
				len = BigIntType.PRECISION + 1; // extra for negative value
				break;
			case DECIMAL:
				len = ((DecimalType) type).getPrecision() + 2; // extra for negative value and decimal point
				break;
			case BOOLEAN:
				len = 5; // "true" or "false"
				break;
			case DATE:
				len = 10; // e.g. 9999-12-31
				break;
			case TIME_WITHOUT_TIME_ZONE:
				int precision = ((TimeType) type).getPrecision();
				len = precision == 0 ? 8 : precision + 9; // 23:59:59[.999999999]
				break;
			case TIMESTAMP_WITHOUT_TIME_ZONE:
				precision = ((TimestampType) type).getPrecision();
				len = timestampTypeColumnWidth(precision);
				break;
			case TIMESTAMP_WITH_LOCAL_TIME_ZONE:
				precision = ((LocalZonedTimestampType) type).getPrecision();
				len = timestampTypeColumnWidth(precision);
				break;
			default:
				len = maxColumnWidth;
		}

		// adjust column width with potential null values
		colWidths[i] = Math.max(colWidths[i], Math.max(len, nullColumn.length()));
	}

	// add an extra column for row kind if necessary
	if (rowKindColumn != null) {
		final int[] ret = new int[columns.size() + 1];
		ret[0] = rowKindColumn.length();
		System.arraycopy(colWidths, 0, ret, 1, columns.size());
		return ret;
	} else {
		return colWidths;
	}
}
 

@Override
public Integer visit(TinyIntType tinyIntType) {
	return TinyIntType.PRECISION;
}