Shai Erera created LUCENE-4565:
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Summary: Simplify TaxoReader ParentArray/ChildrenArrays
Key: LUCENE-4565
URL: https://issues.apache.org/jira/browse/LUCENE-4565
Project: Lucene - Core
Issue Type: Improvement
Components: modules/facet
Reporter: Shai Erera
Assignee: Shai Erera
Priority: Minor
TaxoReader exposes two structures which provide information about a categories
parent/childs/siblings: ParentArray and ChildrenArrays. ChildrenArrays are
derived (i.e. created) from ParentArray.
I propose to consolidate all that into one API ParentInfo, or CategoryTreeInfo
(a better name?) which will provide the same information, only from one object.
So instead of making these calls:
{code}
int[] parents = taxoReader.getParentArray();
int[] youngestChilds = taxoReader.getChildrenArrays().getYoungestChildArray();
int[] olderSiblings = taxoReader.getChildrenArrays().getOlderSiblingArray();
{code}
one would make these calls:
{code}
int[] parents = taxoReader.getParentInfo().parents();
int[] youngestChilds = taxoReader.getParentInfo().youngestChilds();
int[] olderSiblings = taxoReader.getParentInfo().olderSiblings();
{code}
Not a big change, just consolidate more code into one logical place. All of
these arrays will continue to be lazily allocated.
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