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jHDF Change Log

v0.5.4

  • Add support for variable length datasets jamesmudd#123
  • Add support for Compound datatype v3 messages allowing more compound datasets to be read
  • Fix jamesmudd#139 bug accessing chunked v4 string datasets
  • Fix jamesmudd#143 bug traversing links
  • Code cleanup
  • Upgrade to Gradle 6.1
  • Update dependencies

v0.5.3

  • Add support for chunked v4 datasets with b-tree chunk indexing
  • Improve exceptions for unsupported b-tree records
  • Improve test coverage
  • Upgrade to Gradle 6.0.1

v0.5.2

  • Fix jamesmudd#124 String padding not handled correctly.
  • Fix jamesmudd#132 Multi dimensional fixed length string datasets read incorrectly.

v0.5.1

  • Fix bug in chunked v4 datasets (added in v0.5.0) where incorrect data was returned if, fixed array or extensible array indexing was used and the dataset dimensions were not a multiple of the chunk dimensions.
  • Adds support for enum datasets (which are returned in string form) jamesmudd#121
  • Adds HdfFile convenience constructors for URI and Path
  • Fix jamesmudd#125
  • Update dependencies
  • Refactors test files to separate HDF5 files from scrips.
  • Improvements to test coverage.

v0.5.0

  • Adds support for some types (the most common) of chunked v4 datasets:
    • Single chunk
    • Fixed array
    • Extensible array
  • Fix jamesmudd#113 fixed length UTF8 datasets can now be read correctly.
  • Fix jamesmudd#112 multiple accesses to a global heap object now behave correctly.
  • Lots of code cleanup and minor improvements
  • Updates dependencies

v0.4.8

  • Add support for reference data type. Thanks to Gisa Meier and JCzogalla jamesmudd#106 jamesmudd#91
  • Creation order tracking is skipped allowing these files to be read
  • FileChannel can now be accessed allowing more low-level access to datasets
  • Add version logging when the library is used

v0.4.7

  • Fix jamesmudd#101
  • Add additional testing of attributes
  • Add attribute example

v0.4.6

  • Adds support for compound datasets
  • Adds support for array data type
  • Adds support for reading chunked datasets with Fletcher32 checksums. Note: the checksum is not verified.
  • Improved performance of Dataset.isEmpty method
  • Dependency updates

v0.4.5

  • Fix jamesmudd#49 - Big (>10x) performance improvement for chunked dataset reads. Chunks are now decompressed in parallel and the resulting data copies are a large as possible.
  • Update Gradle to 5.5
  • Update test dependencies

v0.4.4

  • Fix jamesmudd#88 error when running on Java 8
  • Improvements to IDE support
  • Improvements to exceptions in currently unsupported cases

v0.4.3

  • Initial work for #49 slow chunked dataset reads
  • Lots of typos cleaned up
  • Add additional build data to MANIFEST.MF

v0.4.2

  • Add support for byte shuffle filter
  • Many filter management improvements including support for dynamically loaded filters
  • Add support for reading dataset fill values jamesmudd#74
  • Checkstyle added to improve code consistency - not full code formatting yet...
  • Update Gradle to 5.4
  • Update commons-lang3 to 3.9 (Java 8)
  • Update mockito-core to 2.27.+

v0.4.1

  • Add support for broken links
  • Add support for attribute and link creation order tracking jamesmudd#70
  • Allow superblock v1 files to be loaded
  • Improve exceptions thrown when lazy loading fails
  • Fix bug to allow non-cached groups to be loaded
  • Improvement to documentation
  • Update Gradle
  • Update test dependencies
  • Code base cleanup
  • Improvements to CI builds and PR validation

v0.4.0

  • Add support for accessing attributes (see Attribute.java)
  • Add support for scalar datasets
  • Add support for empty datasets
  • Add support for files with user blocks
  • Fix bug where "old" style groups containing soft links could not be opened
  • Fix bug reading unsigned numbers from "awkward" buffer sizes
  • Lots of minor code cleanup and refactoring
  • Improvements to tests and coverage

v0.3.2

  • Fix bug when fixed size string datasets contain strings of exactly that size.
  • Fix bug where >1D fixed size datasets could not be read
  • Add more JavaDoc
  • Minor refactoring

v0.3.1

  • Add support for String datasets
  • Remove Dataset.getDataBuffer - Not all datasets can reasonably support accessing the backing buffer
  • Dataset.getMaxSize now always returns a result previously returned Optional if no max size was in the file now it returns the dataset size if no max size is present.
  • Remove dependency on org.slf4j.slf4j-simple, now just depends on slf4j-api
  • Update SLF4J to 1.8.0-beta4
  • Update to Gradle 5.2.1 and Gradle plugins

v0.3.0

  • First release to support reading chunked datasets. (note: v1.8 files only)
  • Initial support for compressed datasets, GZIP only at the moment.

Pre 0.3.0

Lots of initial development towards being able to read HDF5 files in pure Java. See Git history if your interested.