PhoenixmlDb.XQuery 2.0.0

• net10.0

  • Antlr4.Runtime.Standard (>= 4.13.1)
  • Lucene.Net (>= 4.8.0-beta00016)
  • Lucene.Net.Analysis.Common (>= 4.8.0-beta00016)
  • PhoenixmlDb.Core (>= 2.0.0)

• net8.0

  • Antlr4.Runtime.Standard (>= 4.13.1)
  • Lucene.Net (>= 4.8.0-beta00016)
  • Lucene.Net.Analysis.Common (>= 4.8.0-beta00016)
  • PhoenixmlDb.Core (>= 2.0.0)

**Major because existing queries stop compiling.** Part of the coordinated
namespace-consolidation train: `PhoenixmlDb.Core`, `PhoenixmlDb.XQuery` and `PhoenixmlDb.Xslt`
all move to 2.0.0 together. Takes **PhoenixmlDb.Core 2.0.0**.

### Breaking — read this before upgrading

**1. The extension functions have moved to `phx`, and the old names no longer compile.**

`ft:*` and `dbxml:metadata` are gone. There are no aliases — this is a clean break, so a query
using the old names fails at compile time rather than behaving differently.

| was | now |
|---|---|
| `dbxml:metadata` | `phx:metadata` |
| `ft:stem` | `phx:stem` |
| `ft:tokenize` | `phx:tokenize` |
| `ft:score` | `phx:score` |
| `ft:is-stop-word` | `phx:is-stop-word` |
| `ft:thesaurus-lookup` | `phx:thesaurus-lookup` |

`phx` is **predeclared** — bound to `https://schemas.phoenixml.dev/2026/functions` — so no prolog
declaration is needed. The old `http://www.w3.org/2007/xpath-full-text` namespace is retired, and
with it the misleading suggestion that these were standard functions. They never were: the W3C
Full Text specification defines the `contains text` clause and no callable functions in that
namespace.

**2. A host can no longer bind `phx` to another URI.** Passing a different `phx` binding through
`CompilationOptions.StaticNamespaces` is now a compile error. If your documents use `phx` as
their own prefix, declare it in the query prolog, exactly as you would for `math:`.

**3. `IMetadataProvider` never receives a prefixed key.** Keys arrive as `local` or
`Q{uri}local`. The system key `dbxml:size` now arrives as
`Q{https://schemas.phoenixml.dev/2026/meta}size`. Custom providers matching on the literal
`dbxml:` prefix must be updated.

### Added

- **Prolog-declared prefixes now work in metadata keys.** A key written `p:local` resolves `p`
 through the query's own `declare namespace`, not only the container's bindings.

### Fixed

- **In-scope namespaces survive copies and serialization.** A copied element kept the namespaces
 it needed to serialize correctly, and `fn:in-scope-namespaces` now comes from the same walk
 rather than a second implementation that could disagree.
- **Serialization parameters are read properly**: every parameter the serializer supports,
 `output:item-separator` from the prolog, and a parameter-document through the same path.
- **An unresolvable namespace id fails loudly when serializing** instead of producing output with
 a wrong or empty namespace.
- **An XML declaration is written for a bare element** when one is requested.

### Conformance

W3C QT3 **29,813**.