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CAP Java: Support for hierachies on SQLite #2236

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CAP Java: Support for hierachies on SQLite #2236

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CAP Java: Support for hierachies on SQLite
agoerler Nov 26, 2025
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Warn about hierarchy size on H2.
agoerler Nov 26, 2025
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Update fiori.md
agoerler Nov 26, 2025
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Expand Up @@ -747,13 +747,11 @@ Cache Control feature is currently supported on the Java runtime only.

Recursive hierarchies are parent-child hierarchies, where each entity references its parent and through that defines the hierarchical structure. A common example is a company organization structure or HR reporting, where each employee entity references another employee as a direct report or manager.

Database support for a generic hierarchy implementation by CAP runtimes:

| Runtime\DB | SAP HANA | H2 | PostgreSQL | SQLite |
|-------------|----------|----|------------|--------|
| CAP Java | ✓ | ✓ | ✓ | |
| CAP Node.js | ✓ | |✓ |✓ |
A generic hierarchy implementation for hierarchies is available on all relational datases supported by the CAP runtimes.

::: warning
On H2, only small hierarchies should be used for performance reasons.
:::

### Example
Let's assume we have the following domain model and its projection in a service:
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