v0.13.24

Java codegen

• If the DAR source cannot be read, the application crashes and prints an error report.

DAML Assistant

• Java and Scala codegen is now integrated with the
  assistant and distributed with the SDK. It can be run via daml codegen.
  You can find more information in the `DAML Assistant documentation https://docs.daml.com/tools/assistant.html.

DAML Compiler

• Fix bug with qualified imports of generic templates.

Ledger

• Upgraded ledger-api server H2 Database version to 1.4.199 with stability fixes including one to the merge statement.

DAML Integration Kit

• One more test case added. Transaction service tests are not multi-node aware.
• Semantic tests now ensure synchronization across participants when running in a multi-node setup.

v0.13.23: Release 0.13.23 (#2875)

DAML Integration Kit

• The reference implementation can now spin up multiple nodes, either scaling
  a single participant horizontally or adding new participants. Check the CLI --help option.
• The test tool now runs the double spend test on a shared contract in a
  multi-node setup (as well as single-node).
• The test tool can now run all semantic test in a multi-node setup.

DAML Standard Library

• BREAKING CHANGE The (/) operator was moved out of the Fractional typeclass into a separate Divisible typeclass, which is now the parent class of Fractional. The Int instance of Fractional is discontinued, but there is an Int instance of Divisible. This change will break projects that rely on the Fractional Int instance. To fix that, change the code to rely on Divisible Int instead. This change will also break projects where a Fractional instance is defined. To fix that, add a Divisible instance and move the definition of (/) there.

DAML Assistant

• The HTTP JSON API is now integrated with the
  assistant and distributed with the SDK. It can either be launched
  via daml json-api or via daml start. You can find more information in the
  README.
• The daml.yaml file now supports an additional field
  build-options, which you can use to list cli options you want added to
  invocations of daml build and daml ide.

JSON API

• BREAKING CHANGE The /contracts/search request payload must use
  "%templates" in place of "templateIds" to select which templates' contracts are
  returned. See issue #2777.

DAML Compiler

• BREAKING CHANGE Move the DAML-LF produced by generic template instantiations closer to the surface syntax. See the documentation on How DAML types are translated to DAML-LF for details.

v0.13.22

DAML Assistant

• BREAKING CHANGE Changed the meaning of the source field in the daml.yaml
  file to be a pointer to the source directory of the DAML code contained in a project relative to
  the project root. This is breaking projects, where the source field of the project is pointing
  to a non-toplevel location in the source code directory structure.

DAML Integration Kit

• Introduced initial support for multi-node testing. Note that for the time
  being no test actually uses more than one node.
• BREAKING CHANGE The -p / --target-port and -h / --host
  flags have been discontinued. Pass one (or more) endpoints to test as command line arguments in the
  <host>:<port> form.

Documentation

• Basic explanation of generic templates.

Ledger API

• BREAKING CHANGE In Protobuf Value message, rename decimal field to numeric.

Sandbox

• Updated the PostgreSQL JDBC driver to version 42.2.6.
• Added TRACE level debugging for database operations.
• Fixed a bug that could lead to an inconsistent snapshot of active contracts being served
  by the ActiveContractsService under high load.
• Commands are now deduplicated based on (submitter, application_id, command_id).

v0.13.21

DAML Compiler

• Enable the language extension FlexibleContexts by default.
• BREAKING CHANGE Enable the language extension MonoLocalBinds by default. let and where bindings introducing polymorphic functions that are used at different types now need an explicit type annotation. Without the type annotation the type of the first use site will be inferred and use sites at different types will fail with a type mismatch error.

Java Codegen

• Fix bug that caused the generation of duplicate methods that affected sources with data constructors with type parameters that are either non-unique or not presented in the same order as in the corresponding data type declaration. See #2367.

Ledger

• H2 Database support in the Ledger API Server.

Sandbox

• The sandbox now properly sets the connection pool properties minimumIdle, maximumPoolSize, and connectionTimeout.

v0.13.20

Documentation

• Added platform-independent tips for testing

DAML Compiler

• Some issues that caused damlc test to crash on shutdown have been fixed.
• The DAML compiler was accidentally compiled without
  optimizations on Windows. This has been fixed which should improve
  the performance of damlc and daml studio on Windows.
• damlc build should no longer leak file handles so
  ulimit workarounds should no longer be necessary.
• Allow more contexts in generic templates. Specifically, template constraints can
  have arguments besides type variables, if the FlexibleContexts extension is enabled.

DAML-LF

• Breaking Rename NUMERIC back to DECIMAL in Protobuf definition.

DAML Studio

• damlc ide now also accepts --ghc-option arguments like damlc build
  so damlc ide --ghc-option -W launches the IDE with more warnings.
• The VSCode extension now has a configuration field for
  passing extra arguments to damlc ide.

DAML Integration Kit

• Participant State API and kvutils was extended with support for
  changing the ledger configuration. See changelog in respective package.scala files.

Sandbox

• Fixed a bug that caused the reset service to hang for 10
  seconds. See issue
  #2549.

Java Bindings

• The Java Codegen now supports parametrized ContractIds. See
  #2258.

DAML Standard Library

• Add stripInfix function to DA.List.

v0.13.19

Sandbox

• Fixed a bug that prevented the ledger from loading transactions with empty workflow ids.
• Fixed internal shutdown order to avoid dead letter warnings when
  stopping Sandbox/Ledger API Server. See issue
  #1886.

DAML Studio

• Added a new command for visualizing a project in the IDE.
• Print stack trace when a scenario fails.
• Various memory leaks have been fixed so long-running sessions should
  no longer show a significant increase in memory usage.

DAML Compiler

• The --project-root option now works properly with relative paths
  in daml build.
• Support generic template declarations and instances. Documentation
  for generic templates is still being worked on.
• The --dump-pom flag from damlc package has been removed as
  packaging has not relied on POM files for a while.

Navigator

• {"None": {}} and {"Some": value}, where previously accepted, are no longer supported or used for DAML Optional values.
  Instead, for simple cases, use the plain value for Some, and null for None.
  See issue #2361 for other cases.

HTTP JSON API

• A new, more intuitive JSON format for DAML values is supported.
  See issue #2361.

v0.13.18

DAML Docs

• For damlc docs, the --template argument now takes the path
  to a Mustache template when generating Markdown, Rst, and HTML
  output. The template can use title and body variables to
  control the appearance of the docs.

DAML Assistant

• Spaces in user names or other parts of file names should now be handled correctly.
• The daml deploy and daml ledger experimental commands were
  added. Use daml deploy --help and daml ledger --help to find
  out more about them.
• Fix a bug where daml studio did not launch VSCode on Windows.

v0.13.16

DAML Compiler

• BREAKING CHANGE Handwritten instances of Template and Choice typeclasses
  are no longer supported. All template constructs must be defined using declarations
  inside template syntax.

DAML Docs

• The damlc docs command now produces docs to a folder by default. Use the
  new --combine flag to output a single file instead.
• The damlc docs flag --prefix has been replaced with a --template
  flag which allows for a more flexible template.
• The damlc docs flag --json has been dropped in favor of --format=json.

Extractor

• BREAKING CHANGE Changed schema to accomodate removed field
  ExercisedEvent#contract_creating_event_id. Existing database schemas are
  not compatible anymore with the newer version. The extractor needs to be run
  on an empty schema from Ledger Begin.

Java Bindings

• Add all packages of java bindings to the javadocs. See #2280.
• BREAKING CHANGE Removed field ExercisedEvent#contract_creating_event_id. See #2068.

Ledger API

• BREAKING CHANGE Removed field ExercisedEvent#contract_creating_event_id. See #2068.

Sandbox

• The active contract service correctly serves stakeholders. See #2070.
• Added the --maxInboundMessageSize CLI parameter to set the maximux size
  of messages received through the Ledger API. If the value is not set the
  current default is preserved (4 MB).
• Makes package uploads idempotent and tolerate partial duplicates. See #2130.

v0.13.15

DAML Studio

• Scenario links no longer disappear if the current file does not compile. The location is adjusted but this is done one a best effort basis and can fail if the scenario itself is modified.

DAML Compiler

• Support reading of DAML-LF 1.5 again.

Ledger API

• BREAKING: Drop support for legacy identifier. The previously deprecated field name in Identifier message is not supported anymore. Use module_name and entity_name instead.

Navigator

• Fixed an issue when Navigator console did not see any contracts.
  See #2271.

Documentation

• Improved the Maven pom.xml file for quickstart-java to better integrate with VS Code.
  See #887.

Releases

• Releases should now be announced on the releases blog.

v0.13.14

DAML Compiler

• Support reading of DAML-LF 1.5 again.

DAML Studio

VSCode scenario view improvements. Add a note in the IDE if:

• there is an open scenario view for a scenario that does no longer exist,
• there is an open scenario view for a scenario in a file that does no longer compile.