ddn.data.hdf5.table

HDF5 Table Wrapper (High-Level API)

This module provides a D wrapper for HDF5 table operations using the High-Level Table API (H5TB).

License

BSD-3-Clause

struct Table TableInfo

fn getHDF5Type

Types 2

structTableInfo

Information about an HDF5 table.

Fields

hsize_t numFieldsNumber of fields (columns) in the table

hsize_t numRecordsNumber of records (rows) in the table

structTable

High-level wrapper for HDF5 table operations.

This struct provides convenient methods for creating and manipulating HDF5 tables using the High-Level API. Tables are stored as datasets with compound datatypes.

Example:

struct Particle {
    double x, y, z;
    int id;
}

// Create a table
Table.create!(Particle)(file.handle(), "particles", "Particle data");

// Append records
Particle[] data = [...];
Table.append!(Particle)(file.handle(), "particles", data);

Methods

void create(hid_t locId,  string tableName,  string tableTitle,
                        hsize_t numFields,  hsize_t numRecords,  size_t recordSize,
                        const(char *)[]  fieldNames,  const  size_t[]  fieldOffsets,
                        const  hid_t[]  fieldTypes,  hsize_t chunkSize,
                        void *  fillData,  int  compress,  const  void *  data)

Creates a new table.

void create(T)(hid_t locId,  string tableName,  string tableTitle,
                           hsize_t chunkSize =  10,  int  compress =  0) if (is(T ==  struct))

Creates a new table from a D struct type.

void append(hid_t locId,  string tableName,  hsize_t numRecords,
                        size_t recordSize,  const  size_t[]  fieldOffsets,
                        const  size_t[]  fieldSizes,  const  void *  data)

Appends records to an existing table.

void append(T)(hid_t locId, string tableName, const T[] data) if (is(T == struct))Appends records to an existing table using a D struct type.

void read(hid_t locId,  string tableName,  size_t recordSize,
                      const  size_t[]  fieldOffsets,  const  size_t[]  fieldSizes,  void *  data)

Reads the entire table.

void read(T)(hid_t locId, string tableName, T[] data) if (is(T == struct))Reads the entire table into a D struct array.

void readRecords(hid_t locId,  string tableName,  hsize_t start,
                             hsize_t numRecords,  size_t recordSize,
                             const  size_t[]  fieldOffsets,  const  size_t[]  fieldSizes,
                             void *  data)

Reads a range of records from the table.

void readRecords(T)(hid_t locId, string tableName, hsize_t start, T[] data) if (is(T == struct))Reads a range of records from the table into a D struct array.

TableInfo getInfo(hid_t locId, string tableName)Gets information about a table.

void writeRecords(hid_t locId,  string tableName,  hsize_t start,
                              hsize_t numRecords,  size_t recordSize,
                              const  size_t[]  fieldOffsets,  const  size_t[]  fieldSizes,
                              const  void *  data)

Writes records to a specific location in the table.

void writeRecords(T)(hid_t locId, string tableName, hsize_t start, const T[] data) if (is(T == struct))Writes records to a specific location in the table using a D struct array.

Functions 1

private fnhid_t getHDF5Type(T)()Gets the HDF5 native type for a D type.