feat: add Function interface and UnsupportedFunctionException to mapping layer#712
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otaviojava merged 4 commits intoApr 2, 2026
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March 31, 2026 22:18
Introduces the Function interface in the mapping semistructured layer to represent function expressions (e.g., ABS, LENGTH, UPPER). This is part of the Jakarta Data function expression support (issue eclipse-jnosql#643). DefaultFunction is a package-private record following the project convention for Default* implementations. Signed-off-by: Matheus Oliveira <hi@omatheusmesmo.dev>
Adds UnsupportedFunctionException, a runtime exception thrown when a NoSQL database provider does not support a given function expression. Signed-off-by: Matheus Oliveira <hi@omatheusmesmo.dev>
Covers factory methods, equality, toString, and edge cases for the Function interface. Signed-off-by: Matheus Oliveira <hi@omatheusmesmo.dev>
Covers message propagation and exception behavior for UnsupportedFunctionException. Signed-off-by: Matheus Oliveira <hi@omatheusmesmo.dev>
otaviojava
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Apr 2, 2026
| * | ||
| * @return the field name, never {@code null} | ||
| */ | ||
| String field(); |
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In generatl we are using more the term attribute, but I don't have strong feelings on this one.
otaviojava
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Apr 2, 2026
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Description
Adds
FunctionandUnsupportedFunctionExceptionto the semistructured mapping layer as pure type definitions — no grammar changes, no fluent API wiring, no mapper integration. Just the types that the next PRs will use.Step 1 of 3 from the PR #704 split, as requested by @otaviojava and @dearrudam.
Related Issue: Related to #643
Type of Contribution
Architectural and Design Decisions
Functionis a public interface inorg.eclipse.jnosql.mapping.semistructuredwith static factory methods (upper,lower,left,right,length,abs).DefaultFunctionis a package-private record in its own file, following the project's convention forDefault*implementations (and Otávio's feedback on PR Support for Function Expressions in JDQL and Fluent API (#643) #704).UnsupportedFunctionExceptionextendsMappingException(unchecked) so database drivers can signal unsupported functions without forcing checked exceptions on callers.Contribution Checklist
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