kingchenc
167f7b3ffe
Adds a Java binding (`bindings/java`) over the C ABI hub — the fourth language stecker after C#, Go and R, reaching the hub through the Java Foreign Function & Memory API (Panama, `java.lang.foreign`, final in Java 22) rather than JNI or jextract. ## What's here - **`bindings/java`** — a Maven module (`org.wickra:wickra`) exposing all 514 indicators as idiomatic `AutoCloseable` classes. The downcall handles (`internal/NativeMethods.java`), the per-indicator wrappers and the output records are generated from `bindings/c/include/wickra.h` (same eight-archetype taxonomy as the C#/Go/R generators: scalar/batch, multi-output, bars, profile, values-profile, array-input). The opaque handle is a `MemorySegment` freed by a registered `java.lang.ref.Cleaner` action; multi-output returns a `record` (`null` at warmup), bars a `record[]`, profiles a record with a trailing `double[]`. The hand-written `WickraNative` resolves the native library (a bundled per-platform copy, or a `target/release` fallback for local development) and validates it against a sentinel symbol. repr(C) struct offsets are computed in the generator so the FFM reads land on the exact bytes. - **`examples/java`** — the full example suite mirroring C/C#/Go/R: streaming, backtest, multi_timeframe, parallel_assets (parallel streams), three strategies, and `FetchBtcusdt`/`LiveBinance`. - **CI** — a `java` job builds the C ABI library, sets up JDK 22 (Temurin, with a CDN-flake retry), runs the archetype test suite and the seven offline examples on Linux, macOS and Windows. - **Release** — a gated `java-publish` job (skipped until the `JAVA_PUBLISH_ENABLED` repository variable is set) stages the native libraries from the `wickra-c-<triple>.tar.gz` assets into the binding's resources and deploys to Maven Central with GPG signing. Independent of the GitHub-release job, like the NuGet job. - **Docs** — Java added to the README languages table, project layout, building/testing and comparison table, CONTRIBUTING, ARCHITECTURE, the examples index, the issue/PR templates, the About-description template, and the other binding READMEs. ## Requirements Java 22+ (the FFM API is final since Java 22). The binding requires `--enable-native-access=ALL-UNNAMED` at runtime; the test and example runners pass it automatically. No Rust crate or `Cargo.toml` change — the Java binding is standalone and additive. The generated `*.java` are committed (like the node `index.js`/`index.d.ts`); the generator stays private.
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1.7 KiB
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37 lines
1.7 KiB
Markdown
# Documentation
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Wickra's full documentation lives at **[docs.wickra.org](https://docs.wickra.org)**.
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That includes:
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- **Quickstarts** for [Rust](https://docs.wickra.org/Quickstart-Rust),
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[Python](https://docs.wickra.org/Quickstart-Python),
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[Node](https://docs.wickra.org/Quickstart-Node),
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[WASM](https://docs.wickra.org/Quickstart-WASM),
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[C](https://docs.wickra.org/Quickstart-C),
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[C#](https://docs.wickra.org/Quickstart-CSharp),
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[Go](https://docs.wickra.org/Quickstart-Go),
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[Java](https://docs.wickra.org/Quickstart-Java), and
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[R](https://docs.wickra.org/Quickstart-R).
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- A per-indicator deep dive for every one of the **514 indicators** across
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the sixteen families (Moving Averages, Momentum Oscillators, Trend &
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Directional, Price Oscillators, Volatility & Bands, Bands & Channels,
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Trailing Stops, Volume, Price Statistics, Ehlers / Cycle DSP, Pivots &
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S/R, DeMark, Ichimoku & Charts, Candlestick Patterns, Market Profile,
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Risk / Performance) — see the
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[indicators overview](https://docs.wickra.org/Indicators-Overview).
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- **Reference pages**: [warmup periods](https://docs.wickra.org/Warmup-Periods),
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[streaming vs batch](https://docs.wickra.org/Streaming-vs-Batch),
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[indicator chaining](https://docs.wickra.org/Indicator-Chaining), and the
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[data layer](https://docs.wickra.org/Data-Layer).
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- **Guides**: [Cookbook](https://docs.wickra.org/Cookbook),
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[TA-Lib migration](https://docs.wickra.org/TA-Lib-Migration),
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[FAQ](https://docs.wickra.org/FAQ).
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## Editing the docs
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The documentation site is a separate git repository at
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`https://github.com/wickra-lib/wickra-docs`. Open a pull request there to
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propose changes; the site is built with VitePress and deploys to
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`docs.wickra.org`.
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