Found
https://cwiki.apache.org/confluence/display/lucene/BooleanQuerySyntax
But this does not explain the problem...
Oh... and there is a bug in the abbreviated queries: the X behind the
second _g_dn should be Y - but this does not affect the further
AND/OR/+/- query structure.
Jochen
Am 04.12.19 um 12:39 schrieb Jochen Barth:
Dear reader, I'm using solr 8.1.1.
I'm trying to switch from q.op=OR to q.op=AND, because of the parser I
generate the queries for solr is somewhat more simple to develop with
q.op=AND.
but the new query is returning less hits;
I have shortened the query string for better readability; _g_up stands
for »from=id to=parent_ids«, _g_dn stands for »from=parent_ids to=id«,
_tft stands for »-type_s:multivolume_work -type_s:periodical
-type_s:issue -type_s:journal«
and I have dropped some lenghty query terms (e. g. text_tei_ft,
text_abstract_ft, meta_title_txt, meta_name_txt, ...) (for readability)
here the original query without q.op=AND
q=_query_:"{!graph _g_up}filter(+((_query_:\"{!graph
_g_dn}meta_subject_txt:X meta_shelflocator_txt:X\" _query_:\"{!graph
traversalFilter=\\\"class_s:meta _tft\\\" _g_up}text_ocr_ft:X
text_pdf_ft:X\") (_query_:\"{!graph _g_dn}meta_subject_txt:X
meta_shelflocator_txt:X\" _query_:\"{!graph
traversalFilter=\\\"class_s:meta _tft\\\" _g_up}text_ocr_ft:X
text_pdf_ft:X\") ) +class_s:meta )"
here the new query with q.op=AND:
q=_query_:"{!graph _g_up}filter(((_query_:\"{!graph
_g_dn}meta_subject_txt:X OR meta_shelflocator_txt:X\" OR
_query_:\"{!graph traversalFilter=\\\"class_s:meta _tft\\\"
_g_up}text_ocr_ft:X OR text_pdf_ft:X\") OR (_query_:\"{!graph
_g_dn}meta_subject_txt:X OR meta_shelflocator_txt:X\" OR
_query_:\"{!graph traversalFilter=\\\"class_s:meta _tft\\\"
_g_up}text_ocr_ft:X OR text_pdf_ft:X\") ) class_s:meta )"
for comparison, the whole (unshortened) query as by debug=query from
solr;
whitout q.op=AND:
# parsedquery: "GraphQuery([[filter(+(([[meta_title_txt:\"h
schliemann\" meta_name_txt:\"h schliemann\" meta_subject_txt:\"h
schliemann\" meta_shelflocator_txt:\"h
schliemann\"],parent_ids=id][maxDepth=-1][returnRoot=true][onlyLeafNodes=false][useAutn=false]
[[meta_title_txt:\"h schliemann\" meta_name_txt:\"h schliemann\"
text_ocr_ft:\"h schliemann\" text_heidicon_ft:\"h schliemann\"
text_watermark_ft:\"h schliemann\" text_catalogue_ft:\"h schliemann\"
text_index_ft:\"h schliemann\" text_tei_ft:\"h schliemann\"
text_abstract_ft:\"h schliemann\" text_pdf_ft:\"h
schliemann\"],id=parent_ids] [TraversalFilter: class_s:meta
-type_s:multivolume_work -type_s:periodical -type_s:issue
-type_s:journal][maxDepth=-1][returnRoot=true][onlyLeafNodes=false][useAutn=false])
([[meta_title_txt:\"henry schliemann\" meta_name_txt:\"henry
schliemann\" meta_subject_txt:\"henry schliemann\"
meta_shelflocator_txt:\"henry
schliemann\"],parent_ids=id][maxDepth=-1][returnRoot=true][onlyLeafNodes=false][useAutn=false]
[[meta_title_txt:\"henry schliemann\" meta_name_txt:\"henry
schliemann\" text_ocr_ft:\"henry schliemann\" text_heidicon_ft:\"henry
schliemann\" text_watermark_ft:\"henry schliemann\"
text_catalogue_ft:\"henry schliemann\" text_index_ft:\"henry
schliemann\" text_tei_ft:\"henry schliemann\" text_abstract_ft:\"henry
schliemann\" text_pdf_ft:\"henry schliemann\"],id=parent_ids]
[TraversalFilter: class_s:meta -type_s:multivolume_work
-type_s:periodical -type_s:issue
-type_s:journal][maxDepth=-1][returnRoot=true][onlyLeafNodes=false][useAutn=false]))
+class_s:meta)],id=parent_ids][maxDepth=-1][returnRoot=true][onlyLeafNodes=false][useAutn=false])"
with q.op=AND:
# parsedquery: "+GraphQuery([[+filter(+(([[meta_title_txt:\"h
schliemann\" meta_name_txt:\"h schliemann\" meta_subject_txt:\"h
schliemann\" meta_shelflocator_txt:\"h
schliemann\"],parent_ids=id][maxDepth=-1][returnRoot=true][onlyLeafNodes=false][useAutn=false]
[[meta_title_txt:\"h schliemann\" meta_name_txt:\"h schliemann\"
text_ocr_ft:\"h schliemann\" text_heidicon_ft:\"h schliemann\"
text_watermark_ft:\"h schliemann\" text_catalogue_ft:\"h schliemann\"
text_index_ft:\"h schliemann\" text_tei_ft:\"h schliemann\"
text_abstract_ft:\"h schliemann\" text_pdf_ft:\"h
schliemann\"],id=parent_ids] [TraversalFilter: +class_s:meta
-type_s:multivolume_work -type_s:periodical -type_s:issue
-type_s:journal][maxDepth=-1][returnRoot=true][onlyLeafNodes=false][useAutn=false])
([[meta_title_txt:\"henry schliemann\" meta_name_txt:\"henry
schliemann\" meta_subject_txt:\"henry schliemann\"
meta_shelflocator_txt:\"henry
schliemann\"],parent_ids=id][maxDepth=-1][returnRoot=true][onlyLeafNodes=false][useAutn=false]
[[meta_title_txt:\"henry schliemann\" meta_name_txt:\"henry
schliemann\" text_ocr_ft:\"henry schliemann\" text_heidicon_ft:\"henry
schliemann\" text_watermark_ft:\"henry schliemann\"
text_catalogue_ft:\"henry schliemann\" text_index_ft:\"henry
schliemann\" text_tei_ft:\"henry schliemann\" text_abstract_ft:\"henry
schliemann\" text_pdf_ft:\"henry schliemann\"],id=parent_ids]
[TraversalFilter: +class_s:meta -type_s:multivolume_work
-type_s:periodical -type_s:issue
-type_s:journal][maxDepth=-1][returnRoot=true][onlyLeafNodes=false][useAutn=false]))
+class_s:meta)],id=parent_ids][maxDepth=-1][returnRoot=true][onlyLeafNodes=false][useAutn=false])"
wdiff of both:
"GraphQuery([[filter(+(([[meta_title_txt:\"h"+GraphQuery([[+filter(+(([[meta_title_txt:\"h
... [TraversalFilter:class_s:meta +class_s:meta
-type_s:multivolume_work ... [TraversalFilter:class_s:meta
+class_s:meta -type_s:multivolume_work
...
so the + before the »filter(« shouldnt be strictly necessary nor be
the problem,
and the + efore class_s:meta isn't necessary, too, but can't be the
problem, too, in my opinion.
What I found out is, that, "+" and "-" have higher precedence than
"AND" and "OR"... but I don't see my error...
Does someone has a hint for me?
Kind regards,
Jochen
--
Jochen Barth * Universitätsbibliothek Heidelberg, IT * Telefon 06221 54-2580
