add lexile to solr (#10573)

* add lexile to solr & search

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: mekarpeles

conf/solr/conf/managed-schema.xml

@@ -161,6 +161,9 @@
     <field name="isbn" type="string" multiValued="true"/>
     <field name="ebook_access" type="ebookAccessLevel" multiValued="false"/>
 
+    <!-- Reading Levels -->
+    <field name="lexile" type="pint" multiValued="true"/>
+
     <!-- Classifications -->
     <field name="lcc" type="string" multiValued="true" />
     <field name="lcc_sort" type="string" stored="false" /> <!-- Need non-multiValued for sorting -->

openlibrary/plugins/worksearch/schemes/works.py

@@ -55,6 +55,7 @@ class WorkSearchScheme(SearchScheme):
         "by_statement",
         "publish_date",
         "lccn",
+        "lexile",
         "ia",
         "oclc",
         "isbn",

openlibrary/solr/solr_types.py

@@ -34,6 +34,7 @@ class SolrDocument(TypedDict):
     oclc: Optional[list[str]]
     isbn: Optional[list[str]]
     ebook_access: Optional[Literal['no_ebook', 'unclassified', 'printdisabled', 'borrowable', 'public']]
+    lexile: Optional[list[int]]
     lcc: Optional[list[str]]
     lcc_sort: Optional[str]
     ddc: Optional[list[str]]

openlibrary/solr/updater/edition.py

@@ -144,6 +144,13 @@ def cover_i(self) -> int | None:
             None,
         )
 
+    @property
+    def lexile(self) -> int | None:
+        try:
+            return int(self._edition.get('lexile', None)) or None
+        except (TypeError, ValueError):
+            return None
+
     @property
     def language(self) -> list[str]:
         """Gets the 3 letter language codes (eg ['ger', 'fre'])"""

openlibrary/solr/updater/work.py

@@ -379,6 +379,10 @@ def number_of_pages_median(self) -> int | None:
         else:
             return None
 
+    @property
+    def lexile(self) -> set[int]:
+        return {lex for e in self._solr_editions if (lex := e.lexile) is not None}
+
     @property
     def editions(self) -> list[SolrDocument]:
         return [ed.build() for ed in self._solr_editions]