Uses of Annotation Interface
dev.hardwood.Experimental

Packages that use Experimental
Package
Description
dev.hardwood
Core entry points for reading Parquet files.
dev.hardwood.metadata
Low-level Parquet file metadata types that mirror the Thrift definitions.
dev.hardwood.reader
Parquet file readers with row-oriented and column-oriented APIs.
dev.hardwood.s3
Amazon S3 backend for reading Parquet files from object storage.
dev.hardwood.writer
Parquet file writer, with a columnar and a row-oriented API over one core.

  • Uses of Experimental in dev.hardwood

    Classes in dev.hardwood with annotations of type Experimental
    Modifier and Type
    Interface
    Description
    static interface 
    HardwoodContext.Builder
    Builder for a HardwoodContext.
    final class 
    InMemoryOutputFile
    An OutputFile that keeps the file in memory and hands it back.
    interface 
    MetadataSource
    Supplies the parsed footer of a file a reader opens, in place of the reader reading it.
    interface 
    Validity
    Per-item nullability over a run of items, shared by the reader and the writer: the reader returns it (a column-reader leaf or STRUCT / REPEATED layer scope), and the writer accepts it as a column's null mask.
    Methods in dev.hardwood with annotations of type Experimental
    Modifier and Type
    Method
    Description
    static HardwoodContext.Builder
    HardwoodContext.builder()
    Starts building a context.
    default Optional<String>
    InputFile.identity()
    An identifier of the file's content, which differs for different content, if the backend can supply one without a request of its own; empty when it cannot.
    static InMemoryOutputFile
    OutputFile.inMemory()
    Creates an uncreated OutputFile that keeps the file in memory.

  • Uses of Experimental in dev.hardwood.metadata

    Classes in dev.hardwood.metadata with annotations of type Experimental
    Modifier and Type
    Interface
    Description
    interface 
    ParsedFooter
    The parsed footer of one file, as a MetadataSource hands it to a reader.

  • Uses of Experimental in dev.hardwood.reader

    Classes in dev.hardwood.reader with annotations of type Experimental
    Modifier and Type
    Class
    Description
    final class 
    BinaryDictionary
    The dictionary of a BYTE_ARRAY, FIXED_LEN_BYTE_ARRAY or INT96 column chunk, from ColumnReader.getBinaryDictionary().
    interface 
    ColumnDictionary
    The dictionary of one column chunk: the distinct values a dictionary-encoded column stores once, which ColumnReader.getDictionaryIds() refers to by entry.
    class 
    ColumnReader
    Batch-oriented column reader for reading a single column across all row groups.
    enum 
    LayerKind
    Classifies a ColumnReader layer between root and leaf.
    class 
    StaleMetadataException
    Raised when the footer a MetadataSource supplied does not describe the file being read.

  • Uses of Experimental in dev.hardwood.s3

    Methods in dev.hardwood.s3 with annotations of type Experimental
    Modifier and Type
    Method
    Description
    Optional<String>
    S3InputFile.identity()
    The object's ETag, taken from the response to the request S3InputFile.open() issues; empty when the endpoint sent none.

  • Uses of Experimental in dev.hardwood.writer

    Classes in dev.hardwood.writer with annotations of type Experimental
    Modifier and Type
    Interface
    Description
    interface 
    ListBuilder
    Appends the entries of one LIST instance.
    interface 
    MapBuilder
    Appends the entries of one MAP instance.
    enum 
    PrecisionLossPolicy
    What RowWriter does with a value carrying more precision than the column it is written to can hold — an Instant with microseconds into a TIMESTAMP(MILLIS) column, a BigDecimal with three decimals into a DECIMAL(_, 2) column.
    final class 
    RowWriter
    Writes a Parquet file record by record, over the same columnar core ColumnWriter exposes through ColumnWriter.writeBatch(Consumer).
    interface 
    RowWriteResult
    The outcome of RowWriter.tryWriteRow(Consumer): the record is in the batch, or it was rejected without failing the writer.
    interface 
    StructBuilder
    Sets the fields of one struct — a record being written, or a struct nested inside one.
    Methods in dev.hardwood.writer with annotations of type Experimental
    Modifier and Type
    Method
    Description
    ColumnBatch
    ColumnBatch.booleans(int columnIndex, boolean[] values, boolean[] nulls)
    Adds the values for an OPTIONAL BOOLEAN column, addressed by index, with a plain mask.
    ColumnBatch
    ColumnBatch.booleans(int columnIndex, boolean[] values, Validity nulls)
    Adds the values for an OPTIONAL BOOLEAN column, addressed by index.
    ColumnBatch
    ColumnBatch.booleans(String columnName, boolean[] values, boolean[] nulls)
    Adds the values for an OPTIONAL BOOLEAN column, addressed by name, with a plain mask.
    ColumnBatch
    ColumnBatch.booleans(String columnName, boolean[] values, Validity nulls)
    Adds the values for an OPTIONAL BOOLEAN column, addressed by name.
    ColumnBatch
    ColumnBatch.bytes(int columnIndex, byte[][] values, boolean[] nulls)
    Adds the values for an OPTIONAL BYTE_ARRAY column, addressed by index, with a plain mask.
    ColumnBatch
    ColumnBatch.bytes(int columnIndex, byte[][] values, Validity nulls)
    Adds the values for an OPTIONAL BYTE_ARRAY column, addressed by index.
    ColumnBatch
    ColumnBatch.bytes(String columnName, byte[][] values, boolean[] nulls)
    Adds the values for an OPTIONAL BYTE_ARRAY column, addressed by name, with a plain mask.
    ColumnBatch
    ColumnBatch.bytes(String columnName, byte[][] values, Validity nulls)
    Adds the values for an OPTIONAL BYTE_ARRAY column, addressed by name.
    ColumnBatch
    ColumnBatch.doubles(int columnIndex, double[] values, boolean[] nulls)
    Adds the values for an OPTIONAL DOUBLE column, addressed by index, with a plain mask.
    ColumnBatch
    ColumnBatch.doubles(int columnIndex, double[] values, Validity nulls)
    Adds the values for an OPTIONAL DOUBLE column, addressed by index.
    ColumnBatch
    ColumnBatch.doubles(String columnName, double[] values, boolean[] nulls)
    Adds the values for an OPTIONAL DOUBLE column, addressed by name, with a plain mask.
    ColumnBatch
    ColumnBatch.doubles(String columnName, double[] values, Validity nulls)
    Adds the values for an OPTIONAL DOUBLE column, addressed by name.
    ColumnBatch
    ColumnBatch.fixed(int columnIndex, byte[][] values, boolean[] nulls)
    Adds the values for an OPTIONAL FIXED_LEN_BYTE_ARRAY column, addressed by index, with a plain mask.
    ColumnBatch
    ColumnBatch.fixed(int columnIndex, byte[][] values, Validity nulls)
    Adds the values for an OPTIONAL FIXED_LEN_BYTE_ARRAY column, addressed by index.
    ColumnBatch
    ColumnBatch.fixed(String columnName, byte[][] values, boolean[] nulls)
    Adds the values for an OPTIONAL FIXED_LEN_BYTE_ARRAY column, addressed by name, with a plain mask.
    ColumnBatch
    ColumnBatch.fixed(String columnName, byte[][] values, Validity nulls)
    Adds the values for an OPTIONAL FIXED_LEN_BYTE_ARRAY column, addressed by name.
    ColumnBatch
    ColumnBatch.floats(int columnIndex, float[] values, boolean[] nulls)
    Adds the values for an OPTIONAL FLOAT column, addressed by index, with a plain mask.
    ColumnBatch
    ColumnBatch.floats(int columnIndex, float[] values, Validity nulls)
    Adds the values for an OPTIONAL FLOAT column, addressed by index.
    ColumnBatch
    ColumnBatch.floats(String columnName, float[] values, boolean[] nulls)
    Adds the values for an OPTIONAL FLOAT column, addressed by name, with a plain mask.
    ColumnBatch
    ColumnBatch.floats(String columnName, float[] values, Validity nulls)
    Adds the values for an OPTIONAL FLOAT column, addressed by name.
    ColumnBatch
    ColumnBatch.ints(int columnIndex, int[] values, boolean[] nulls)
    Adds the values for an OPTIONAL INT32 column, addressed by index, with nulls given as a plain mask.
    ColumnBatch
    ColumnBatch.ints(int columnIndex, int[] values, Validity nulls)
    Adds the values for an OPTIONAL INT32 column, addressed by index.
    ColumnBatch
    ColumnBatch.ints(String columnName, int[] values, boolean[] nulls)
    Adds the values for an OPTIONAL INT32 column, addressed by name, with nulls given as a plain mask.
    ColumnBatch
    ColumnBatch.ints(String columnName, int[] values, Validity nulls)
    Adds the values for an OPTIONAL INT32 column, addressed by name.
    ColumnBatch
    ColumnBatch.list(String listPath, int[] offsets)
    Sets the entry offsets of a LIST, addressed by the list group's dot-separated path.
    ColumnBatch
    ColumnBatch.list(String listPath, int[] offsets, Validity nulls)
    Sets the entry offsets of a LIST together with its per-instance nulls (which lists are themselves absent), distinct from an empty list carrying a zero-delta offset.
    ColumnBatch
    ColumnBatch.longs(int columnIndex, long[] values, boolean[] nulls)
    Adds the values for an OPTIONAL INT64 column, addressed by index, with a plain mask.
    ColumnBatch
    ColumnBatch.longs(int columnIndex, long[] values, Validity nulls)
    Adds the values for an OPTIONAL INT64 column, addressed by index.
    ColumnBatch
    ColumnBatch.longs(String columnName, long[] values, boolean[] nulls)
    Adds the values for an OPTIONAL INT64 column, addressed by name, with a plain mask.
    ColumnBatch
    ColumnBatch.longs(String columnName, long[] values, Validity nulls)
    Adds the values for an OPTIONAL INT64 column, addressed by name.
    ColumnBatch
    ColumnBatch.map(String mapPath, int[] offsets)
    Sets the entry offsets of a MAP, addressed by the map group's dot-separated path.
    ColumnBatch
    ColumnBatch.map(String mapPath, int[] offsets, Validity nulls)
    Sets the entry offsets of a MAP together with its per-instance nulls (which maps are themselves absent), distinct from an empty map carrying a zero-delta offset.
    RowWriter
    ParquetFileWriter.rowWriter()
    Returns the row-oriented view over this file: a record-shaped API for callers that hold records rather than columns.
    ColumnBatch
    ColumnBatch.struct(String structPath, Validity nulls)
    Sets the per-instance nulls of an OPTIONAL struct group, addressed by its dot-separated path.