Wire finish_preserve_values through ArrayBuilder trait#9601
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adamreichold wants to merge 1 commit intoapache:mainfrom
Open
Wire finish_preserve_values through ArrayBuilder trait#9601adamreichold wants to merge 1 commit intoapache:mainfrom
adamreichold wants to merge 1 commit intoapache:mainfrom
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To support delta dictionaries for nested builders, this adds a new method finish_preserve_values to the ArrayBuilder trait and wires it through to the relevant dictionary and composite builders.
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Which issue does this PR close?
Rationale for this change
Delta dictionaries require user code to call
finish_preserve_valuesinstead offinishon the dictionary builders. But this is generally not possible if those builders are nested within composite builders like lists, maps or structs. Using the new trait method, user code can call this generically which has no effect on e.g. primitive builders due to the default implementation but forwards to this method for composite ones.What changes are included in this PR?
Adds a new method
finish_preserve_valuestoArrayBuilderwith a default implementation that forwards tofinish.Implements this method for dictionary and composite builders.
Are these changes tested?
Adds tests where new
finish_preserve_valuesinherent methods were created to check that the correct method on the constituent builders is called using a shared mock builderPreserveValuesMock.Are there any user-facing changes?
This adds a new method
finish_preserve_valuesto the centralArrayBuildertrait, but it has a default implementation so this should be backwards compatible.