SpatialConstraint

**Spatial predicate** using **OGC CQL2 (JSON semantics)** applied to one or more geometry targets in an item. This is where clients express spatial intent. Key ideas: - targets: one or more **JSONPath-like** pointers that locate geometry fields within each item document (e.g., $['availableAt'][*]['geo']). - op: spatial operator (CQL2). Common ones: • S_WITHIN (A is completely inside B) • S_INTERSECTS (A intersects B) • S_CONTAINS (A contains B) • S_DWITHIN (A within distance of B) - geometry: **GeoJSON** literal used as the predicate reference geometry. - distanceMeters: required for S_DWITHIN when using a GeoJSON Point/shape. - quantifier: if a target resolves to an array, choose whether **ANY** (default), **ALL**, or **NONE** of elements must satisfy the predicate. CRS: unless otherwise stated, all coordinates are **EPSG:4326**.

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