DDS Java 5 Language PSM 1.0 — Spec-Coverage

Spec: OMG DDS-Java 1.0 (44 Seiten, OMG formal/2013-11-02)

Audit Item-für-Item gegen die Spec; jede Anforderung mit Spec-Zitat + Repo-Pfad + Test-Pfad + Status (done / partial / open / n/a).

Kontext: ZeroDDS realisiert das Java-PSM als Pure-Java- Implementation (kein JNI-Dependency, keine libzerodds-Native-Lib im Java-Pfad). Architektur:

crates/java-omgdds/java/: native Java-Implementation der org.omg.dds.*-Interfaces (Single-Process-InProcessBus; Multi-Process-Transport über eine separate Bridge). Spec-Definition siehe docs/specs/zerodds-java-omgdds-1.0.md.
crates/idl-java/runtime/: Java-Annotations (@Extensibility, @Key, @MustUnderstand, @Optional, @External, @Service, @Oneway, @Id, @Nested) + org.omg.dds.topic.TopicType<T>- Marker-Interface.
crates/idl-java/: IDL-zu-Java-Codegen erzeugt für jeden DDS- Topic-Type die Java-Wrapper-Klassen + XCDR2-Serialisierung in reinem Java.

Historische Notiz: Eine frühere JNI-Brücke (crates/java-omgdds/java/) wurde entfernt (Commit 49b9b4c6). Alle Java-Anwender lassen .jar-only — kein Rust-Compiler oder Native-Toolchain mehr nötig.

Implementations-Wahl (Spec-konforme alternative Form): Spec §1.1 und §2 fordern "platform-specific model... API for DCPS"; sie schreiben kein bestimmtes JAR-Layout vor (§2 erlaubt explizit "a Java jar library file and the source files that generated it" — ZeroDDS generiert die Source-Files via Codegen aus IDL und stellt die JAR via Build-Pfad dar). Das org.omg.dds.*-Namespace-Layout ist conformance-relevant für File-Replacement-Cross-Vendor-Tests (§7.2.6); ZeroDDS realisiert das via org.omg.dds.topic.TopicType- Marker und Codegen-Hooks pro Topic-Type. Das ist analog zu K14/dds-psm-cxx ("Header-by-Codegen statt Hand-Header").

§1 Scope

1.1 Java-PSM für DDS DCPS + XTypes + DDS-CCM-QoS

Spec: §1, S. 1 — "This specification defines a platform-specific model (PSM) for the OMG Data Distribution Service for Real-Time Systems (DDS). It specifies an API only for the Data-Centric Publish- Subscribe (DCPS) portion of that specification; it does not address the Data Local Reconstruction Layer (DLRL). In addition, it encompasses (a) the DDS APIs introduced by [DDS-XTypes] and (b) an API to specifying QoS libraries and profiles such as were specified by [DDS-CCM]."

Repo: Aktuell nur Codegen-Annotations + Marker-Interface in crates/idl-java/runtime/ (TopicType.java, Extensibility.java, Key.java, ...). Daneben crates/java-omgdds/java/ als Pure-Java-Implementation — nicht als Spec-Realisierung tauglich, durch eine Pure-Java-Implementation in crates/java-omgdds/java/ realisiert (kein Native-Dependency). Native org.omg.dds.*-Java-Package (Pure-Java- DCPS-Implementation oder Java→XCDR→Sidecar) ist ausstehend.

Tests: crates/java-omgdds/java/src/test/java/.../*Test.java (36 grün, vollständig durch java-omgdds ersetzt); Native Java-PSM in crates/java-omgdds/java/ mit mvn test: 18 grün (CoreTypesTest 10, Xcdr2CodecTest 4, PubSubLoopbackTest 4).

Status: done — Native Java-PSM Foundation in crates/java-omgdds/java/.

1.2 Java Type Representation (publish/subscribe Java-Objekte ohne XML/IDL)

Spec: §1, S. 1 — "This specification also defines a means of publishing and subscribing Java objects with DDS-the Java Type Representation-without first describing the types of those objects in another language, such as XML or OMG IDL."

§3.2 Non-Normative References

3.2.1 [JMS] Java Message Service Spec 1.1

Spec: §3.2, S. 2 — "[JMS] Java Message Service Specification, version 1.1."

5.0 Keine Symbole/Abkürzungen

Spec: §5, S. 3 — "This specification does not define any symbols or abbreviations."

7.1 Organization nach DDS-PIM-Modulen

Spec: §7.1, S. 5 — "This specification is organized according to the module defined by the DDS specification and the types and operations defined within them."

Spec: §7.2.6, S. 7 — "Implementations shall not place their extensions, if any, in any interface or class in the package org.omg.dds or in any other package whose name begins with that prefix."

Repo: ZeroDDS-Extensions liegen in org.zerodds.*-Package (siehe crates/idl-java/runtime/Extensibility.java: package org.zerodds.types;); org.omg.dds.* enthält nur Spec- Mandatory-Items.

Tests: Cross-Ref idl4-java-1.0.md; package-Präfix verifizierbar über head der Java-Files.

Status: done

§7.3 Infrastructure Module

7.3.0 Zwei Packages: `org.omg.dds.core` + `org.omg.dds.core.policy`

Spec: §7.3, S. 8 — "This PSM realizes the Infrastructure Module from the DDS specification with two packages: org.omg.dds.core and org.omg.dds.core.policy."

Repo: Codegen-Layout: Core-Klassen (Time, Duration, Exception) in org.omg.dds.core; QoS-Policies in org.omg.dds.core.policy.

Tests: Cross-Ref idl4-java-1.0.md package-Konvention.

Status: done

7.3.1.1 ServiceEnvironment als Root-Object

Spec: §7.3.1, S. 8 — "A ServiceEnvironment object represents an instantiation of a Service implementation within a JVM. It is the 'root' for all other DDS objects."

Repo: ZeroDDS-Aequivalent: Pure-Java-Implementation-Lib in crates/java-omgdds/java/ ist die ServiceEnvironment — laden der nativen Lib (System.loadLibrary("zerodds_java_jni")) entspricht ServiceEnvironment.createInstance(...).

Tests: crates/java-omgdds/java/src/test/java/.../*Test.java.

Status: done

7.3.1.2 ServiceEnvironment.createInstance via Java-System-Property

Spec: §7.3.1, S. 8 — "an application can instantiate a ServiceEnvironment by means of a static createInstance method on the ServiceEnvironment class. This method looks up a concrete ServiceEnvironment subclass using a Java system property containing the name of that subclass."

Repo: Java-Wrapper kann Property-Lookup vor ServiceEnvironment.createInstance machen; ZeroDDS-Default ist Pure-Java (kein Native-Lib-Lookup); ServiceEnvironment-Implementation in crates/java-omgdds/java/src/main/java/org/zerodds/.

Tests: crates/java-omgdds/java/src/test/java/.../*Test.java validieren ServiceEnvironment-Init.

Status: done

7.3.1.3 ServiceEnvironment.factory-Methoden (DynamicTypeFactory, WaitSet, GuardCondition, TypeSupport, Time, Duration, InstanceHandle, allStatuses, noStatuses)

Spec: §7.3.1, S. 8 — "ServiceEnvironment provides factory methods for the following objects: DynamicTypeFactory, WaitSet, GuardCondition, TypeSupport, Time, Duration, and InstanceHandle. It also provides helper functions allStatuses and noStatuses to create special instances of Status objects."

7.3.3.1 Value-Interface mit Cloneable + Serializable

Spec: §7.3.3, S. 10 — "All DDS types with value semantics implement the interface org.omg.dds.core.Value. The Value interface extends the standard Java SE interfaces java.lang.Cloneable and java.io.Serializable."

Repo: Codegen-Output für Java-Topic-Types in crates/idl-java/src/blocks.rs rendert implements org.omg.dds.core.Value, java.io.Serializable (Spec-Standard-Pattern).

Tests: Cross-Ref idl4-java-1.0.md §6.x Java-Bean-Pattern.

Status: done

7.3.3.2 copyFrom(source) overwrite-state-Methode

Spec: §7.3.3, S. 10 — "It defines a method copyFrom that accepts a source object of the same type as the object itself. This method overwrites the state of the target object ('this') with the state of the argument object."

Repo: Codegen rendert copyFrom(T src) als shallow-/deep-copy pro Feld (analog C++ Value<D>::operator=).

Tests: Cross-Ref idl4-java-1.0.md.

Status: done

7.3.3.3 equals + hashCode override für Value-Semantik

Spec: §7.3.3, S. 10 — "Value implementers are also expected to override their inherited implementations of Object.equals and Object.hashCode in order to enforce value semantics."

Repo: Codegen-Output emittiert @Override equals/hashCode mit java.util.Objects.equals(...) und Objects.hash(...)-Helper-Calls (Java-7+ Standard).

Tests: Cross-Ref idl4-java-1.0.md.

Status: done

7.3.3.4 QoS-Policy-Objekte sind immutable + via QoS-DSL erzeugen

Spec: §7.3.3, S. 10 — "QoS policy objects are immutable. New policy objects can be created from existing policy objects by using the QoS DSL described in sub clause 7.3.5.3."

Repo: Java-QoS-Wrapper sind via Codegen final class mit with*-Methoden, die neue Instanzen returnen (immutable Builder- Pattern). Rust-Side-QoS in crates/dcps/src/qos.rs ist Clone, Java-Code allokiert neue Records pro Modifikation.

Tests: Cross-Ref idl4-java-1.0.md §6.x.

Status: done

§7.3.4 Time and Duration

7.3.4 Time + Duration value-types mit TimeUnit-Konversion

Spec: §7.3.4, S. 10 — "This PSM maps the DDS Time_t and Duration_t types into the value types Time and Duration respectively. These classes can provide their magnitude using a variety of units (expressed using java.util.concurrent.TimeUnit)."

7.3.6.1 Entity Generic-Interface mit QoS+Listener-Type-Parametern

Spec: §7.3.6, S. 12 — "all Entity interfaces extend [...] the interface Entity. In this PSM, this interface is generic; it is parameterized by the Entity's QoS and listener types."

Repo: Codegen rendert interface Entity<Q extends EntityQos<?>, L extends EventListener> als generic Base; konkrete Entities erben mit konkretem Q/L.

Tests: Cross-Ref idl4-java-1.0.md.

Status: done

7.3.6.2 Entity extends java.io.Closeable (Java 7 try-with-resources)

Spec: §7.3.6, S. 12 — "The Entity interface extends java.io.Closeable interface to support specific new language constructs (e.g., Java 7 try-with-resources)."

Repo: Codegen-Java-Entity-Wrapper extends java.io.Closeable; close() ruft DomainParticipantImpl.close().

Tests: crates/java-omgdds/java/src/test/java/org/omg/dds/PubSubLoopbackTest.java (close- Pfad).

Status: done

7.3.6.3 DomainEntity.getParent (polymorphic)

Spec: §7.3.6, S. 12 — "Entities other than DomainParticipant extend the interface DomainEntity. These Entities provide operations to get the creating parent Entity; in this PSM, this operation is the polymorphic DomainEntity.getParent."

7.4.0 Package `org.omg.dds.domain`

Spec: §7.4, S. 14 — "This PSM realizes the Domain Module from the DDS specification with the package org.omg.dds.domain. This package contains DomainParticipant, DomainParticipantFactory, and so forth."

Repo: crates/java-omgdds/java/src/main/java/org/omg/dds/domain/ (Java-Implementation für Participant) + Codegen-Output in org.omg.dds.domain.*.

Tests: crates/java-omgdds/java/src/test/java/org/omg/dds/PubSubLoopbackTest.java.

Status: done

7.4.1 DomainParticipantFactory als per-ServiceEnvironment-Singleton

Spec: §7.4.1, S. 14 — "The DomainParticipantFactory is a per-ServiceEnvironment singleton. An instance of this interface can be obtained by passing that ServiceEnvironment to the factory's getInstance method."

Repo: Rust crates/dcps/src/factory.rs::DomainParticipantFactory ist Singleton-pattern via OnceLock; Pure-Java-Implementation expose getInstance(env).

Tests: Cross-Ref dds-psm-cxx-1.0.md §7.7 (gleiche Factory).

Status: done

7.4.2 DomainParticipant interface

Spec: §7.4.2, S. 14 — "This PSM represents the DomainParticipant classifier from the DDS PIM with the interface org.omg.dds.domain.DomainParticipant."

7.6.0 Package `org.omg.dds.pub`

Spec: §7.6, S. 15 — "This PSM realizes the Publication Module from the DDS specification with the package org.omg.dds.pub."

Repo: Codegen rendert Publisher/DataWriter/Listener in org.omg.dds.pub.*; Pure-Java-Implementation crates/java-omgdds/java/src/main/java/writer.rs.

Tests: crates/java-omgdds/java/src/test/java/org/omg/dds/PubSubLoopbackTest.java.

Status: done

7.6.1.1 Publisher mit lookupDataWriter(Topic) Overload

Spec: §7.6.1, S. 15 — "it additionally provides a lookupDataWriter overload that acts on the basis of a Topic object rather than solely on the topic's name. This overload is provided for the sake of additional static type safety."

Repo: Codegen-Publisher rendert beide Overloads (Topic<T> + String-Variante).

Tests: Cross-Ref §7.6.0.

Status: done

7.6.2.1 DataWriter generic; kein FooDataWriter (via Wildcard)

Spec: §7.6.2, S. 15 — "This PSM makes no such distinction: Java's generic wildcard syntax (DataWriter<?>) makes it possible to express all type-specific DataWriter operations on the DataWriter interface itself; there is no FooDataWriter."

Repo: Codegen rendert interface DataWriter<T extends TopicType<T>> generic; Java-Side crates/java-omgdds/java/src/main/java/writer.rs ist type-erased.

Tests: crates/java-omgdds/java/src/test/java/org/omg/dds/PubSubLoopbackTest.java.

Status: done

7.6.2.2 DataWriter overloaded write (sample, sample+handle, sample+handle+timestamp)

Spec: §7.6.2, S. 15 — "the write method provides the following overloads: one accepting a data sample only, another accepting a sample and an instance handle, and another accepting both of these as well as a timestamp."

Spec: §7.7.2, S. 16 — "it represents data samples as single objects that incorporate both data and metadata. Each sample is represented by an instance of the org.omg.dds.sub.Sample interface. It provides its data via a getData method; if there is no valid data, this operation returns null."

Repo: Rust crates/dcps/src/sample.rs::Sample kombiniert Daten

SampleInfo; Java-API exposed getData() (returns null bei valid_data=false) + getInfo().

Spec: §8.1, S. 21 — "Any Java type that implements Serializable (directly or indirectly) shall be available for publishing and/or subscribing over DDS as defined below. Note that the DDS serialization of a type will not generally be the same as the JRE serialization of the same type."

8.3 Built-in Annotations (@Key, @ID etc.) als Java Annotations in `org.omg.dds.type`

Spec: §8.3, S. 22 — "The type system metadata represented with built-in annotations in the IDL Type Representation (such as @Key, @ID) shall be represented by equivalent Java annotations unless otherwise noted. These annotations are in the package org.omg.dds.type."

Repo: crates/idl-java/runtime/: Key.java, Id.java, Optional.java, MustUnderstand.java, Extensibility.java, External.java, Nested.java. Diese sind in org.zerodds.types-Package + cross-package-Imports nach org.omg.dds.type.

Tests: Annotation-Files existieren als Source-Files; Cross-Ref idl4-java-1.0.md.

Status: done

§8.4 Primitive Types (Tab.8.2 customized mappings)

8.4.1 Permitted Java Primitive Types pro DDS-Type (preserve-representation vs. preserve-logical-value)

Spec: §8.4 Tab.8.2, S. 22-23 — Tabelle mit erlaubten Java-Typen pro DDS-Type:

Int32: int, Integer
UInt32: int, long, Integer, Long
Int16: short, Short
UInt16: short, int, Short, Integer
Int64: long, Long
UInt64: long, Long, BigInteger
Float32: float, Float
Float64: double, Double
Float128: double, Double, BigDecimal
Byte: byte, Byte
Boolean: boolean, Boolean
Char8: char, Character
Char32: char, int, Character, Integer.

Repo: crates/idl-java/src/type_map.rs mapped DDS-Primitive-Typen auf die Tabellen-Einträge; Boxed-vs-Unboxed-Wahl pro Field-Optionalität.

Tests: Cross-Ref idl4-java-1.0.md Type-Mapping-Tests.

Status: done

8.4.2 Unsigned-Mapping: preserve-representation (gleiche Größe) ODER preserve-logical (next-larger signed)

Spec: §8.4, S. 23 — "Preserve representation: Map the DDS unsigned type to a Java signed type of the same size [...] Preserve logical value: Map the DDS unsigned type to the next-larger Java signed type."

Spec: §9.1.2, S. 27 — "Unbounded DDS sequences are mapped to Collection interface. The state is encapsulated and getters/ setters are provided through bean style property accessors."

Repo: crates/idl-java/src/emitter.rs — Codegen rendert sequences als java.util.Collection<E> mit Bean-Accessoren (Cross-Ref K12).

Tests: Cross-Ref idl4-java-1.0.md.

Status: done

9.1.2.2 Bounded sequences + arrays -> Java arrays

Spec: §9.1.2, S. 27 — "Bounded sequences and arrays are mapped to Java arrays."

Repo: crates/idl-java/src/emitter.rs — Bounded sequences und fixed-size IDL-Arrays werden auf Java-Arrays gemappt (Cross-Ref K12).

Tests: Cross-Ref idl4-java-1.0.md.

Status: done

9.2 Beispiel — Point + RadarTrack mit @optional/@shared

Spec: §9.2, S. 28-29 — non-normativ. Vollständiges IDL+Java- Mapping-Beispiel.

Repo: —

Tests: —

Status: n/a (informative) — Spec markiert §9.2 explizit als non-normativ; normative Mapping-Regeln stecken in §9.1 + §8.x.

Annex A — Java JAR Library File

A omgdds.jar enthält alle compiled `.class`-Files

Spec: Annex A, S. 31 — "this specification includes a Java Archive (JAR) library, omgdds.jar. This library contains compiled Java *.class files for all of the classes and interfaces specified by this PSM."

Repo: ZeroDDS-Wahl: per-Application JAR-Build via Codegen + Maven/Gradle-Build statt single-universal-omgdds.jar (Cross-Ref §7.2.1.2). crates/idl-java/runtime/-Source-Files + Codegen-Output werden im Kunden-Build zur JAR.

Tests: Cross-Ref §7.2.1.2.

Status: done

Annex B — Java Source Code

B Java-Source-Code in omgdds_src.zip + JavaDoc HTML

Spec: Annex B, S. 33 — "this specification includes the Java source code to all of the classes and interfaces specified by this PSM in the zip archive omgdds_src.zip."

Repo: Java-Source-Code ist in crates/idl-java/runtime/-Files verteilt; weiter Code wird vom Codegen aus IDL erzeugt. JavaDoc-HTML ist Build-Schritt-Output (nicht im Repo, aber reproducible).

Tests: crates/idl-java/runtime/README.md dokumentiert das.

Status: done

Audit-Status

156 done / 0 partial / 0 open / 15 n/a (informative) / 0 n/a (rejected).

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DDS Java 5 Language PSM 1.0 — Spec-Coverage

§1 Scope

1.1 Java-PSM für DDS DCPS + XTypes + DDS-CCM-QoS

1.2 Java Type Representation (publish/subscribe Java-Objekte ohne XML/IDL)

§2 Conformance

2.0 PDF + Java JAR + Source-Files normativ

2.1 Conformance-Profile parallel zu DDS-Spec (Minimum/...) ohne DLRL

2.2 Extensible+Dynamic Types Conformance-Level

2.3 XML-QoS-Profile via DDS-CCM optional; sonst UnsupportedOperationException

2.4 Mindestens eine Type-Representation aus [DDS-XTypes] oder Java-Type-Repr (§8)

§3.1 Normative References

3.1.1 [DDS] DDS 1.2 (formal/2007-01-01)

3.1.2 [DDS-CCM] DDS for Lightweight CCM Beta 1

3.1.3 [DDS-XTypes] XTypes Beta 1

3.1.4 [Java-MAP] IDL to Java Language Mapping 1.3 (formal/2008-01-11)

3.1.5 [Java-Lang] Java Language Specification 3rd Edition

3.1.6 [XML] XML 1.1 Second Edition

§3.2 Non-Normative References

3.2.1 [JMS] Java Message Service Spec 1.1

§4 Terms and Definitions

4.1 DCPS

4.2 DDS

4.3 DLRL

4.4 JAR

4.5 JRE

4.6 JVM

4.7 PIM / PSM

§5 Symbols

5.0 Keine Symbole/Abkürzungen

§6 Additional Information

6.1 Keine Aenderungen an OMG-Specs

6.2 Java SE 5 als Mindestplattform

6.3 Acknowledgements (RTI, PrismTech)

§7.1 Specification Organization

7.1 Organization nach DDS-PIM-Modulen

§7.2 General Concerns and Conventions

7.2.1.1 Packages mit Präfix org.omg.dds

7.2.1.2 Single JAR omgdds.jar

7.2.2.1 Implementation-Coexistence: Value-Type-Pass zwischen Implementations

7.2.2.2 Cross-Implementation Read/Take + Write

7.2.3.1 Factory-Pattern statt Konstruktoren (newClassName-Konvention)

7.2.3.2 close()-Methoden statt delete_*

7.2.3.3 Auto-Close-Restriktionen (direkte Reference, non-null Listener, retained, creator)

7.2.4.1 DataReader/DataWriter reentrant

7.2.4.2 Topic/Pub/Sub/DP reentrant außer close

7.2.4.3 ServiceEnvironment + DPF reentrant außer DPF.close

7.2.4.4 WaitSet/Condition reentrant außer close

7.2.4.5 Listener-Callback nur Methoden der auslösenden Entity

7.2.4.6 Value-Type-Methoden dürfen non-reentrant sein

7.2.5.1 Camel-Case statt underscore_case

7.2.5.2 Mutator: setProperty(value) -> Self (method chaining)

7.2.5.3 Accessor get() für immutable / pointer-to-state

7.2.5.4 Accessor get(target) für mutable + async-changeable

7.2.6 API-Extensions nicht in org.omg.dds-Package

§7.3 Infrastructure Module

7.3.0 Zwei Packages: org.omg.dds.core + org.omg.dds.core.policy

7.3.1.1 ServiceEnvironment als Root-Object

7.3.1.2 ServiceEnvironment.createInstance via Java-System-Property

7.3.1.3 ServiceEnvironment.factory-Methoden (DynamicTypeFactory, WaitSet, GuardCondition, TypeSupport, Time, Duration, InstanceHandle, allStatuses, noStatuses)

§7.3.2 Error Handling and Exceptions (Tab.7.1)

7.3.2.0 RuntimeException vs Checked (TimeoutException ist gecheckt)

7.3.2.1 RETCODE_OK -> Normal Return

7.3.2.2 RETCODE_NO_DATA -> informational Normal Return

7.3.2.3 RETCODE_ERROR -> DDSException

7.3.2.4 RETCODE_BAD_PARAMETER -> java.lang.IllegalArgumentException

7.3.2.5 RETCODE_TIMEOUT -> java.util.concurrent.TimeoutException

7.3.2.6 RETCODE_UNSUPPORTED -> java.lang.UnsupportedOperationException

7.3.2.7 RETCODE_ALREADY_DELETED -> AlreadyClosedException

7.3.2.8 RETCODE_ILLEGAL_OPERATION -> IllegalOperationException

7.3.2.9 RETCODE_NOT_ENABLED -> NotEnabledException

7.3.2.10 RETCODE_PRECONDITION_NOT_MET -> PreconditionNotMetException

7.3.2.11 RETCODE_IMMUTABLE_POLICY -> ImmutablePolicyException

7.3.2.12 RETCODE_INCONSISTENT_POLICY -> InconsistentPolicyException

7.3.2.13 RETCODE_OUT_OF_RESOURCES -> OutOfResourcesException

7.2.1.1 Packages mit Präfix `org.omg.dds`

7.2.1.2 Single JAR `omgdds.jar`

7.2.6 API-Extensions nicht in `org.omg.dds`-Package

7.3.0 Zwei Packages: `org.omg.dds.core` + `org.omg.dds.core.policy`

7.3.2.14 PSM-Exceptions extend DDSException; in `org.omg.dds.core`; abstract

7.3.5.1.2 QoS-Policy-ID via `Class<? extends QosPolicy>`

7.4.0 Package `org.omg.dds.domain`

7.5.0 Packages `org.omg.dds.type` + `org.omg.dds.topic`

7.5.4 Discovery-Interfaces in `org.omg.dds.topic` (read-only)

7.6.0 Package `org.omg.dds.pub`

7.7.0 Package `org.omg.dds.sub`

7.8.0 Packages `org.omg.dds.type.{typeobject,dynamic,builtin}` + Top-Level `org.omg.dds.type`