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Changelog

All notable changes to LEMMA will be documented in this file.

[0.8.6] - 2022-11-22

Added

  • Add Eclipse launchers for LEMMA model processors and processor chains
  • Add support to transform OpenAPI specifications into LEMMA models (contributed by Jonas Sorgalla)
  • Add utility project for testing Xtext-based modeling languages
  • Avro Plugin: Enable direct Avro schema generation from domain model files
  • CQRS Genlet: Add Docker configuration for executing the Genlet in Live Validation mode
  • Data DSL: Add getEffectivePropertyValues function to the intermediate metamodel's IntermediateImportedAspect concept to enable the retrieval of the effective property values of aspect applications
  • Data DSL: Add explicit validation for non-empty Bounded Contexts
  • Data DSL: Add extractor support for features of data structures and data fields (contributed by Philip Wizenty)
  • Data DSL: Add sourceMappingModelUri attribute to the intermediate metamodel's IntermediateComplexType concept
  • Data DSL: Emit warning when DDD Specifications define data fields and thus attempt state definition
  • Data DSL: Emit warning when DDD Value Objects define non-side-effect-free operations
  • Data DSL: Emit warning when DDD Value Objects define mutable fields
  • Deployment Base Generator: Include name of deployed microservice in generated Docker Compose services
  • Deployment Base Generator: Introduce customPortMapping configuration property to enable the specification of custom port mappings for deployed microservices
  • Deployment Base Generator: Support the derivation of port specifications in generated Docker Compose files
  • Domain Events Genlet: Add Docker configuration for executing the Genlet in Live Validation mode
  • Eclipse UI: Enable intermediate domain model transformations from operation models
  • Examples: Add Charging Station Management example including source code generated from example models
  • Intermediate Model Transformations: Add infrastructure for programmatic transformation invocation
  • Java Base Generator: Add "add on relocation" serialization characteristic
  • Java Base Generator: Add Genlet path specifier for the root folder path of the currently generated microservice (contributed by Dominik Pelkmann)
  • Java Base Generator: Add "keep on relocation" serialization characteristic
  • Java Base Generator: Add support for mapping collection types to Java Collection instances
  • Java Base Generator: Enable Genlets to modify generated dependency trees
  • Java Base Generator: Invoke Genlet validations on passed models prior to models' processing
  • Kafka Genlet: Add Docker configuration for executing the Genlet in Live Validation mode
  • Live Validation Server: Enable Docker-based execution
  • Model Processing: Add support for optional built-in arguments
  • Model Processing Framework: Add API for programmatic triggering of model validations
  • Modeling Languages: Implement custom Xtext reconcile strategy to support "on-the-fly" resolution of imported model elements
  • Operation DSL: Link instances of the intermediate metamodel's IntermediateDeploymentTechnologyReference concept with default operation environments in case no explicit environment is specified
  • Operation DSL: Set qualifiedName property for IntermediateImportedAspects in intermediate operation model transformations (contributed by Dominik Pelkmann)
  • Operation DSL: Store the simple names of imported microservices in the name fields of OperationMicroserviceReference instances created during intermediate operation model transformations
  • Releng: Add script to check releng-related configuration files for consistency
  • Rename "Container Base Generator" to "Deployment Base Generator" (contributed by Philip Wizenty)
  • Service DSL: Add "@returned" tag for the documentation of service parameters returned by modeled microservice operations
  • Service DSL: Add extractor plugin (contributed by Jonas Sorgalla)
  • Service DSL: Add sourceMappingModelUri attribute to the intermediate metamodel's IntermediateMicroservice concept
  • Service DSL: Introduce "@requires" and "@returns" synonyms for "@required" and "@returned" API documentation tags
  • Spring Cloud Genlet: Add support for @ElementCollection annotation
  • Spring Cloud Genlet: Add Unique aspect to mark entity fields that hold unique column values
  • Spring Cloud Genlet: Support aspects with eponymous Spring annotation names in technology models with "Spring" qualifier
  • Static Analyzer: Add basic analysis method for retrieving microservice operations that mix synchronous and asynchronous parameters
  • Technology DSL: Add extractor plugin (contributed by Jonas Sorgalla)

Changed

  • Avro Plugin: Correct warning message for already existing target files
  • CQRS Genlet: Fix issue display for modeled microservices that don't require other microservices
  • CQRS Genlet: Fix runtime warning concerning duplicate SLF4J bindings
  • CQRS Genlet: Perform source model validations only when elements exhibit the respective side aspects
  • Data DSL: Fix equivalence comparison for primitive types in validator
  • Data DSL: Fix infinite loop and NPE in cyclic import detection (contributed by Dominik Pelkmann)
  • Data DSL: Fix infinite loop in cyclic inheritance detection
  • Data DSL: Replace list keyword with collection keyword
  • Data DSL: Prevent exception propagation for non-parseable dates
  • Deployment Base Generator: Consider service-specific endpoints when checking that an operation node has endpoints (contributed by Philip Wizenty)
  • Deployment Base Generator: Fix error on startup concerning missing Groovy execution engine
  • Deployment Base Generator: Fix naming of generated Kubernetes deployment files
  • Deployment Base Generator: Fix port checking in intermediate model validator
  • Deployment Base Generator: Fix runtime warning concerning duplicate SLF4J bindings
  • Deployment Base Generator: Ignore modeled containers and infrastructure nodes that don't apply the deployment base technology model
  • Deployment Base Generator: Make error reporting on missing endpoints more precise
  • Deployment Base Generator: Prevent duplicate lines in generated root build scripts
  • Deployment Base Generator: Read artifact ID for Dockerfile from the Maven POM of a generated microservice or an application of the ArtifactId aspect
  • Deployment Base Generator: Sort port mappings generated from modeled infrastructure nodes
  • Deployment Base Generator: Use fully qualified name of microservice to derive file path segments for generated artifacts
  • Deployment Base Generator: Use fully qualified names to check for aspect applications
  • Deployment Base Generator: Use technology name instead of import alias for checking technology application
  • Deployment Base Generator: Use ".yaml" extension for generated Docker Compose files
  • Domain Events Genlet: Fix issue display for EventGroup checks in mapping models
  • Domain Events Genlet: Fix runtime warning concerning duplicate SLF4J bindings
  • Intermediate Model Transformations: Postpone relative URI conversion to the end of a transformation run
  • Intermediate Model Transformations: Preserve original intermediate data models as transformation results from mapping model transformations
  • Java Base Generator: Adapt visibility of @Before callbacks in Genlet-delegating intermediate model validators so that the callbacks become recognizable by the Model Processing Framework (contributed by Dominik Pelkmann)
  • Java Base Generator: Change Java version of generated code to 11
  • Java Base Generator: Don't generate main microservice class in its own package to prevent problems with subsequent classpath scanning performed by additional frameworks like Spring
  • Java Base Generator: Enable commandline arguments to be passed as program arguments instead of code generation module arguments
  • Java Base Generator: Fix resolution of transitive domain model imports
  • Java Base Generator: Generate an executable microservice with a dedicated POM per modeled microservice defined in a given input model
  • Java Base Generator: Generate Java Collection type applications instead of custom classes from modeled collection types
  • Java Base Generator: Improve error message for service models that lack modeled Java microservices (contributed by Simon Trebbau)
  • Java Base Generator: In generated custom implementation classes, add @Override annotation to all overridable methods independent of their visibility
  • Java Base Generator: Make source model an optional argument in script-based executions of the generator
  • Java Base Generator: Preserve lexical information when parsing existing Java files
  • Java Base Generator: Prevent generation of ambiguous imports in generated classes
  • Kafka Genlet: Fix check of query side receiver operations for type-compatible command side sender operations
  • Kafka Genlet: Fix warning for error handling configurations that are effectively disabled by a Domain Events technology model
  • Live Validation Editor: Fix dialog height
  • Live Validation Editor: Preserve issues from regular model validations upon Live Validation issues' receipt
  • Live Validation Server: Report commandline parsing exceptions to user
  • Live Validation Server: Increase default timeout threshold to 2000 milliseconds
  • Live Validation Server: Print errors to error stream
  • Modeling Languages: Fix URI comparison in cyclic import checks
  • Modeling Languages: Make import path validation case sensitive (contributed by Dominik Pelkmann)
  • Modeling Languages: Use absolute paths for checking the existence and uniqueness of imported files (contributed by Dominik Pelkmann)
  • Model Processing Framework: Make handling of phase exceptions more robust by means of a global exception handler
  • Model Processing Framework: Print validation error messages to error stream
  • Model Processing Framework: Rename --exit_on_error option to --continue_after_phase_errors to better communicate its intention
  • Model Processing Framework: Switch from exit code 4 to 1 when model processing failed due to errors
  • Operation DSL: Fix check for existing dependent nodes of an infrastructure node
  • Operation DSL: Fix conversion of import URIs into absolute paths withing intermediate models
  • Releng: Mark fat JARs as multi-release JARs in their manifests to prevent runtime reflection warnings
  • Releng: Migrate build dependencies to Xtext 2.26 to prevent illegal reflective access during model parsing
  • Releng: Prevent illegal reflective access warnings in Docker-based model processor executions
  • Service DSL: Ensure that visibility of modeled microservice interfaces and operations does not exceed that of their defining microservices and interfaces, respectively
  • Service DSL: Enable modeling of unspecified parameter types for non-implemented microservice operations, i.e., microservice operations with the noimpl modifier (contributed by Dominik Pelkmann)
  • Spring Cloud Genlet: Convert implemented types to extended types when turning classes with the CrudRepository aspect into Java interfaces
  • Spring Cloud Genlet: Enable console for H2 databases
  • Spring Cloud Genlet: Generate Spring Boot Maven Plugin dependency for building executable JAR files only when the Genlet effectively processed a microservice
  • Spring Cloud Genlet: Improve handling of inheritance hierarchies for the Embeddable aspect
  • Spring Cloud Genlet: Improve support for multiplicity-related aspects
  • Spring Cloud Genlet: Keep @Entity annotations on subclasses as expected by Hibernate
  • Spring Cloud Genlet: Remove redundant modifiers in CrudRepository interfaces
  • Spring Cloud Genlet: Use method return type as argument for generated ResponseEntity return type wrappers
  • Static Analyzer: Always clear complete cache for consistency in interlinked model elements
  • Static Analyzer: Like for message similarity, rely on VF2SubgraphIsomorphismInspector to calculate conversation similarity following Athanasopoulos et al.
  • Static Analyzer: Return IntermediateComplexType instances of Haupt resources instead of only their names
  • Update log4j dependencies to cope with CVE-2021-44228

Removed

  • Avro Plugin: Remove dependency on Apache Commons Lang library to enable the plugin's usage as an Eclipse drop-in
  • Examples: Remove outdated example for model processor implementation
  • Kafka Genlet: Remove redundant source model validation for Kafka bootstrap endpoints on microservices
  • LEMMA UI Utils: Remove unused method createEnumerationText
  • Modeling Languages: Remove deprecated org.eclipse.xtext.generator bundle from Eclipse build properties
  • Service DSL: Remove redundant dependency on Data DSL's test plugin

[0.8.5] - 2021-08-16

Added

  • Data DSL: Add validation for duplicate list fields
  • Documentation: Add documentation link to README
  • Eclipse UI: Add Xtext editor plugin with Live Validation support
  • Examples: Add new FTGO example
  • Examples: Add examples for code generator implementation before and after the refactoring of the model processing framework (see below), respectively
  • Java Base Generator: Add Genlets to specification for Docker-based execution
  • Java Base Generator: Add support for merging dependencyManagement elements from different POM files
  • Live Validation Editor: Activate for all modeling languages
  • Model Processing Framework: Add convenience version of loadXtextResource()
  • Model Processing Utils: Add support for domain operation mappings to EObject.mappingAspects()
  • Releng: Add updatesite to deployment modules
  • Spring Cloud Genlet: Add support for ResponseStatus aspect on synchronous outgoing parameters

Changed

  • Container Base Generator: Change Dockerfile parsing framework to Jackson and change Docker Compose suffix handling
  • Data DSL: Fix namespace resolution of complex types in getClosestNamespace() meta-operation
  • Java Base Generator: Fix Genlet names in Dockerfile
  • Java Base Generator: Make insertStatement() API method public
  • Java Base Generator: Streamline Java-based Genlet implementation
  • Kafka Genlet: Fix name of variable definition in generated Avro converter bodies
  • Kafka Genlet: Remove methods from processed Java class only when the corresponding LEMMA operation does not specify synchronous parameters
  • Kafka Genlet: Replace class loader retrieval from "static" class name by "dynamic" MethodHandles lookup to cope with possible method relocation during AST ordering by the Java Base Generator
  • Live Validation Framework: Refactor towards loosely coupled Java implementation
  • Model Processing Framework: Change default behavior and exit model processors when phase errors occur
  • Model Processing Framework: Execute all @Check methods in intermediate model validators that are capable in checking the exact type or supertypes of a model element
  • Model Processing Framework: Fix access to uninitialized lateinit property
  • Model Processing Framework: Refactor for more flexibility in phase invocation and harmonize phase component implementation
  • Model Processing Framework: Sort validation results descending by severity weights, and then ascending by line number, column, and message
  • Model Processing Utils: Consider property name in getPropertyValue() also for single-valued aspect applications
  • Model Processing Utils: Convert all URIs in findAliasForTechnology() to file paths to ensure that technology models can actually be found in the filesystem
  • OCL plugin: Bump version of p2AsMaven plugin to 3.27.0 to prevent JCenter interaction
  • Releng: Align Windows build order with Linux build order
  • Releng: Fix error message in Python script for reading version identifiers from build files
  • Static Analyzer: Fix computation of Max Depth metric by counting the edges in the longest path of the resource graph and not the vertices
  • Update Java version of Eclipse plugins and updatesite to 11
  • Upgrade plugins and other components to Eclipse 4.19 (2021-03)

Removed

  • Model Processing Framework: Remove Equinox and JDT dependencies
  • Model Processing Framework: Remove unused flag acceptsModuleSpecificArguments from abstract base class for code generation modules
  • Releng: Remove build file references to the JCenter repository prior to its upcoming deprecation

[0.8.0] - 2021-01-16

Added

  • Data DSL: Enable other complex types besides data structures to become Parts of an Aggregate.
  • Data DSL: Add extractor plugin.
  • Data DSL: Enable DDD feature specification for enumerations.
  • Documentation: Enable Docker build of documentations for intermediate metamodels.
  • Intermediate Model Transformations: Add intermediate operation model transformation (contributed by Philip Wizenty).
  • Java Base Generator: Add support for Java's UUID type.
  • Java Base Generator: Dockerize the generator to make it portable.
  • Java Base Generator: Accompany the generator with a Python script to facilitate its Docker-based execution.
  • Java Base Generator: Support plain serialization of enumerations.
  • Java Base Generator: Add events to inform Genlets that they were loaded and that the overall code generation was finished.
  • Java Base Generator: Add explicitly invoked code generation module shared to enable generation of shared libraries from a set of intermediate domain models.
  • Java Base Generator: Add support for custom constructors, deactivation of initializing constructors and adaptation of their visibility.
  • Live Validation Framework: Introduce --timeout_threshold commandline option to configure the maximum response time of validation clients.
  • Mapping DSL: Add extractor plugin.
  • Model Processing Framework: Enable implementers to access arguments of validation phases.
  • Model Processing Framework: Introduce @BeforeCheck annotation to influence the execution of @Check methods in intermediate model validators.
  • Model Processing Framework: Introduce @RethrowExceptions annotation for intermediate model validator debugging.
  • Operation DSL: Integrate import concept for operation models (contributed by Philip Wizenty).
  • Releng: Add build scripts for Windows.
  • Releng: Enable Maven build of Eclipse updatesite.
  • Releng: Enable LEMMA modules to provide their own Docker images, e.g., for code generator execution.
  • Service DSL: Allow numbers with trailing periods in API comments.
  • Spring Cloud Genlet: Add AttributeOverride as synonym for the AttributeOverrideColumn aspect.
  • Spring Cloud Genlet: Generate corresponding Spring annotations for data structure features Entity, Repository, and Service.
  • Spring Cloud Genlet: Add support for Access, Enumerated, Transactional, and Version aspects.
  • Spring Cloud Genlet: Add support for CrudRepository interfaces.
  • Spring Cloud Genlet: Add spring-boot-starter-data-jpa dependency for data structures with Entity feature.
  • Spring Cloud Genlet: Add support for new Application aspect, which combines Spring Boot application name and port.
  • Spring Cloud Genlet: Add Domain Events sub-Genlet.
  • Spring Cloud Genlet: Add CQRS sub-Genlet.
  • UI: Enable execution of intermediate operation model transformations (contributed by Philip Wizenty).
  • Add code generator to automatically derive Docker containers from operation models (contributed by Philip Wizenty).
  • Add code generator for MariaDB (contributed by Philip Wizenty).
  • Add code generator for MongoDB (contributed by Philip Wizenty).
  • Add code generator for Spring Cloud Zuul (contributed by Philip Wizenty).
  • Add code generator for Spring Cloud Eureka (contributed by Philip Wizenty).
  • Add plugin to generate Apache Avro schema specifications from LEMMA models and vice versa.
  • Add Python script to facilitate the execution of LEMMA model processors within Docker containers.
  • Add Spring Cloud Kafka Genlet.
  • Add Static Analyzer Library and standalone executable Static Analyzer.
  • Support MIME types as data formats.

Changed

  • Data DSL: Fix range check for Double and Float values in metamodel.
  • DDD Genlet: If target node is interface, extend it with tagging interface.
  • Example 3: Add a more comprehensive and updated version of the example models.
  • Examples: Reorganize and give each example a sensible name.
  • Intermediate Model Transformations: Add missing assignment of ENUMERATION kind to intermediate complex types.
  • Intermediate Model Transformations: Remove preceding # from enumeration literals when converting them to strings.
  • Intermediate Model Transformations: Preserve original type of parameters in IntermediateParameter instances.
  • Java Base Generator: Let Maven dependency serializer also generate maven.compiler.source and maven.compiler.target properties in pom.xml.
  • Java Base Generator: Throw exception when no Java microservice could be found in intermediate service model.
  • Java Base Generator: Don't generate new artifact version in Maven dependency serializer, if passed version is already a valid Maven version.
  • Java Base Generator: Make code generation serializers aware of getter and setter imports in composite classes generated from parameter lists.
  • Java Base Generator: Add event to inform Genlets that the next intermediate EObject is about to get processed.
  • Java Base Generator: Let Generation Gap/Extended Generation Gap serializers plain-serialize interfaces.
  • Java Base Generator: Consider imports in Generation Gap/Extended Generation Gap serializers when merging callables of existing classes.
  • Java Base Generator: Don't let serializers add throw statement to non-void methods if they already contain a throw statement.
  • Java Base Generator: Methods of DDD factories become static by default.
  • Java Base Generator: Add support for merging "repositories elements from different POM files to Maven serializer.
  • Java Base Generator: Enable Genlets to store and retrieve arbitrary, Genlet-specific values at runtime.
  • Java Base Generator: Enable Genlets to add arbitrary information to generated nodes. Added information are shared across all Genlets.
  • Java Base Generator: Automatically convert relative import URIs to absolute URIs
  • Java Base Generator: Recognize aspects with name ApplicationProperty as providers for custom application properties.
  • Mapping DSL: Add missing scoping for types in data operation parameter mappings.
  • Mapping DSL: Fix multiplicity of endpoints in microservice mappings.
  • Mapping DSL: Fix scoping of enumeration fields.
  • Model Processing Framework: Change check for microservice technology to be case-insensitive by default.
  • Model Processing Framework: Introduce @ExplicitlyInvokedCodeGenerationModule annotation for code generation modules that need to be explicitly invoked from the commandline.
  • Operation DSL: An operation node may now either be dependent on or used by the same operation node but not both (contributed by Philip Wizenty).
  • Releng: Dockerize LEMMA builds.
  • Releng: Don't clone LEMMA repository twice during builds.
  • Releng: Fix errorlevel checking of batch scripts in Windows build.
  • Releng: Use LEMMA version as actual version of modules.
  • Releng: Enable continuous deployment with Jenkins.
  • Service, Mapping, and Operation DSLs: Fix validations of aspect uniqueness.
  • Spring Cloud Genlet: Support aspects with Spring qualifier.
  • Spring Cloud Genlet: Always specify scanBasePackages element for SpringBootApplication annotations.
  • Spring Cloud Genlet: Always add spring-boot-starter-web dependency for generated microservice.
  • UI: Fix information text in service model selection dialog.
  • UI: Enable intermediate model generation in Package Explorer and for Java Projects.
  • UI: Consider file extension when starting intermediate model generation from single model file.
  • Upgrade plugins to Eclipse 4.15 (2020-03) and enable Java 11 Maven/Gradle builds for all projects.
  • Lots of minor technical bugfixes.

Removed

  • Intermediate Model Transformations: Remove dependencies of intermediate service model on Data, Service, and Technology metamodels.

[0.7.0] - 2020-04-04

Added

  • Data DSL: Add primitive type unspecified for modeling the intended absence of an explicit type information on data fields.
  • Intermediate Model Transformations: Add missing metamodel element descriptions to documentation.
  • Intermediate Model Transformations: Add qualifiedName to IntermediateImportedAspect.
  • Intermediate Model Transformations: Support transformations within Eclipse projects whose files are not physically located within the current workspace's root.
  • Model Processing: Add model processing and Java/Spring code generation frameworks.
  • Service DSL: Enable modeling of versions on interfaces.
  • UI: Add action to context menu of Project Explorer to enable generation of intermediate models from selected resources only.
  • UI: Add convenience "Select all models and continue" button to model selection dialog.

Changed

  • Data DSL: Change supported date formats to ISO date, time, and datetime.
  • Intermediate Model Transformations: Fix handling of Windows file separators.
  • Intermediate Model Transformations: Fix transformation when service and corresponding mapping model are transformed together.
  • Intermediate Model Transformations: Always assign originalType in intermediate data models according to the documentation.
  • Mapping DSL: Turn error on duplicate endpoints into a warning and thus introduce consistency with Service and Operation DSL.
  • Operation DSL: Fix checking of mandatory property values on infrastructure nodes that do not deploy services.
  • Releng: Fix build scripts (contributed by Philip Wizenty).
  • Releng: Rename build/languages.sh to build/lemma.sh.
  • Technology DSL: Fix checking of technology-specific primitive type mappings when first technology-specific type mapping is not a default mapping.
  • UI: Display erroneous models in model selection dialog again. They will be filtered and not displayed in the transformation target path specification dialog.
  • UI: Change transformation target path specification dialog to prevent the selection of erroneous models imported by correct models.
  • UI: The "Generate Intermediate Models..." menu entries now use resources selected in the Project Explorer to determine the model files to be transformed to intermediate models. In case no resources were selected, all models from the workspace are considered potential model files for the transformation (same behavior as before).
  • Several minor technical bugfixes.

Removed

  • Remove Xtext-generated .java._trace and .xtendbin files from tree.

[0.6.0] - 2019-08-28

Added

  • Data DSL: Enable modeling of operations (functions and procedures) within data structures.
  • Data DSL: Enable specification of prescribed features for data structures, data fields, and data operations. The initial set of supported features comprises patterns from Domain-driven Design (DDD). Constraint violations of pattern specifications are checked and shown as warnings in the Data DSL editor according to our 2018 paper. Furthermore, the initial set of provided features includes the neverEmpty feature, which allows to express that a data field should never be empty, i.e., always provide a value to callers.
  • Data DSL: Enable specification of immutable data fields.
  • Data DSL: Enable modeling of initialization values for data fields in data structures.
  • Mapping DSL: Enable mapping of complex types. Aspects may now be assigned to complex types and their fields. Moreover, fields of complex types may be "re-typed" now with technology-specific types.
  • Mapping DSL: Aspects can now be assigned to enumeration fields.
  • Mapping DSL: Improve grammar consistency: All aspect specifications now need to be completed with a semicolon.
  • Mapping DSL: Extend the built-in @technology annotation with a flag (typedef) to explicitly specify the default type definition technology of mapped complex types and microservices.
  • Operation DSL: Infrastructure nodes may now be modeled as being dependent on other infrastructure nodes and containers. Furthermore, it may now be distinguished between the usage of an infrastructure node by a service, or a whole infrastructure node or container.
  • Operation DSL: Improve grammar consistency: All aspect specifications now need to be completed with a semicolon.
  • Operation DSL: Restrict scope of aspect technologies to those annotated on an operation node.
  • Operation DSL: Provide alternative, "call-like" notation for property value assignment. Next to property = value, it is now also possible to write property(value).
  • Service DSL: Provide alternative, "call-like" notation for property value assignment. Next to property = value, it is now also possible to write property(value).
  • Service DSL: Extend the built-in @technology annotation with a flag (typedef) to explicitly specify the default type definition technology of a microservice.
  • Service DSL: Enable API commenting. API comments can be placed above service operations as the first element (i.e., above possible built-in or technology aspect annotations and the operation name). API comments are enclosed in a pair of three subsequent dashes (---) and start with a text describing the service operation as part of the API. After the description text, parameters of the operation may be commented leveraging the following pattern: @[API_PARAM_SPEC] [parameterName] [parameterDescriptionText] with API_PARAM_SPEC being either param (optional parameters) or required (required parameters).
  • Technology DSL: Enable specification of prescribed features for service and operation aspects. The singleval feature allows for modeling that an aspect may only be assigned once to a target element.
  • Technology DSL: Enable specification of prescribed features for aspect, service, and operation properties. The mandatory feature allows for specifying that the property needs to receive a value. The singleval feature allows for specifying that the property may receive a value exactly once.
  • Technology DSL: Provide technology pointcut selector for operation aspects.

Changed

  • Rename the project from "Domain-driven Microservice Modeling (DDMM)" to "Language Ecosystem for Modeling Microservice Architecture (LEMMA)".
  • Data DSL: Don't consider technology-specific types in scoping of imported complex types.
  • Data DSL: Fixed scoping of local and imported complex types.
  • Mapping DSL: The emptyness check of mapping models now considers mapped data fields.
  • Mapping DSL: Fixed validation of non-existing aspect properties.
  • Mapping DSL: Fixed assignment of more than one property value.
  • Mapping DSL: Prevent import leaking.
  • Mapping DSL: Don't show a type incompatibility warning for complex types.
  • Mapping DSL: Consider existing endpoints in service models when checking for duplicate endpoints.
  • Mapping DSL: Duplicate endpoint addresses now produce warnings instead of errors.
  • Intermediate Model Transformations: Fix mapping model transformation so that it correctly relates service models and corresponding mapping models.
  • Intermediate Model Transformations: Fix simultaneous transformation of service and mapping models that map elements from the service models.
  • Operation DSL: Consider protocols when validating if technology models are usable in operation models.
  • Service DSL: Fixed scoping of aspects that specify protocol and data format selectors.
  • Service DSL: Fixed scoping of aspects on first operation of an interface.
  • Service DSL: Duplicate endpoint addresses now produce warnings instead of errors.
  • Technology DSL: Fix validation of default primitive types.
  • Technology DSL: Don't highlight pointcuts in selectors as keywords.
  • Technology DSL: Allow specification of protocols for only one communication type.
  • Technology DSL: Aspect pointcut selectors will only be applied to a join point, if all of their pointcuts are applicable to that join point. For instance, the selector protocol=rest, exchange_pattern=in will not apply to microservices, because this join point does not support the exchange_pattern pointcut. Instead, an additional selector would need to be specified for the microservices join point with protocol=rest alone.
  • Transformation: Only produce intermediate endpoints for all protocol/format combinations, if the protocol does not specify a default data format in its technology model. Applies to intermediate service model transformations.
  • Tooling: The Maven buildscript now shows notifications when the build of a module has finished.
  • UI: Add keyword highlighting for boolean values.
  • UI: Don't allow transformation of erroneous models.

Removed

  • Service DSL: It is not possible anymore to use single-quotes (') to enclose strings. Instead, double-quotes (") must be used. If double-quotes must be included in strings as literals, they can be escaped to \". Consequently, the string 'Beware the Jubjub bird, and shun the frumious "Bandersnatch"!' must be transformed to "Beware the Jubjub bird, and shun the frumious 'Bandersnatch'!" or "Beware the Jubjub bird, and shun the frumious \"Bandersnatch\"!".