Re: [basex-talk] Working with custom stores

-- Tim A. Thompson (he, him) Librarian for Applied Metadata Research www.linkedin.com/in/timathompson timothy.thompson@yale.edu El mar, 15 nov 2022 a la(s) 13:21, Christian Grün (christian.gruen@gmail.com) escribió: > Wow. I’ll look into that soon. Do you think you can provide me with a > little test case (e.g., a BaseX command script) to reproduce this? > > > > > Tim Thompson timathom@gmail.com schrieb am Di., 15. Nov. 2022, 19:16: > >> Thanks! I just tried to dump the contents of the store to a database >> value: >> >> db:put-value( >> "entries", >> array { >> store:keys() ! store:get(.) (: sequence of arrays :) >> }, >> "x" >> ) >> >> But when I query with db:get-value("entries", "x"), I get a "Not >> Expected" error. Should this kind of operation be possible? >> >> Error: >> Improper use? Potential bug? Your feedback is welcome: >> Contact: basex-talk@mailman.uni-konstanz.de >> Version: BaseX 10.3 beta >> Java: Azul Systems, Inc., 11.0.16 >> OS: Mac OS X, aarch64 >> Stack Trace: >> java.lang.RuntimeException: Not Expected. >> at org.basex.util.Util.notExpected(Util.java:54) >> at org.basex.query.value.type.AtomType.read(AtomType.java:983) >> at org.basex.core.Store.read(Store.java:315) >> at org.basex.query.func.db.DbGetValue.resource(DbGetValue.java:70) >> at org.basex.query.func.db.DbGetValue.value(DbGetValue.java:46) >> at org.basex.query.func.db.DbGetValue.value(DbGetValue.java:27) >> at org.basex.query.expr.ParseExpr.iter(ParseExpr.java:46) >> at org.basex.query.scope.MainModule.iter(MainModule.java:48) >> at org.basex.query.QueryContext.lambda$4(QueryContext.java:354) >> at org.basex.query.QueryContext.run(QueryContext.java:763) >> at org.basex.query.QueryContext.iter(QueryContext.java:354) >> at org.basex.query.QueryContext.lambda$6(QueryContext.java:601) >> at org.basex.query.QueryContext.run(QueryContext.java:763) >> at org.basex.query.QueryContext.cache(QueryContext.java:598) >> at org.basex.query.QueryProcessor.cache(QueryProcessor.java:118) >> at org.basex.core.cmd.AQuery.run(AQuery.java:82) >> at org.basex.core.Command.run(Command.java:233) >> at org.basex.core.Command.execute(Command.java:93) >> at org.basex.gui.GUI.execute(GUI.java:415) >> at org.basex.gui.GUI.lambda$5(GUI.java:360) >> at java.base/java.lang.Thread.run(Thread.java:829) >> >> >> >> -- >> Tim A. Thompson (he, him) >> Librarian for Applied Metadata Research >> www.linkedin.com/in/timathompson >> timothy.thompson@yale.edu >> >> >> El mar, 15 nov 2022 a la(s) 13:07, Christian Grün ( >> christian.gruen@gmail.com) escribió: >> >>> You'll be safe: Updates with db:put-value will be managed via the >>> Pending Update List [1], and future queries that operate on the same >>> database will be queued until the update is finished. >>> >>> [1] https://docs.basex.org/wiki/XQuery_Update#Pending_Update_List >>> >>> >>> >>> Tim Thompson timathom@gmail.com schrieb am Di., 15. Nov. 2022, 18:50: >>> >>>> That's perfect--I knew I was missing something :) >>>> >>>> Are db:get-value and db:put-value side-effecting as well? >>>> >>>> Thanks, >>>> Tim >>>> >>>> >>>> -- >>>> Tim A. Thompson (he, him) >>>> Librarian for Applied Metadata Research >>>> www.linkedin.com/in/timathompson >>>> timothy.thompson@yale.edu >>>> >>>> >>>> El mar, 15 nov 2022 a la(s) 12:28, Christian Grün ( >>>> christian.gruen@gmail.com) escribió: >>>> >>>>> Hi Tim, >>>>> >>>>> > Using the store module, is it possible to read and merge multiple >>>>> custom stores into main memory >>>>> >>>>> We could add an argument (or options) to file:read to allow entries to >>>>> be added to an existing main-memory store. >>>>> >>>>> > set a particular store as context for a query? >>>>> >>>>> The recommended approach is to invoke store:read before any other >>>>> operation in the query. Please note, however, that the store will be >>>>> globally available. If a second query runs on the same server and >>>>> opens another store, it will change the behavior of the first query. >>>>> For such use cases, it’s better to use databases. >>>>> >>>>> > Or, do I need to serialize the stores, e.g., as JSON and then create >>>>> databases for them? >>>>> >>>>> You could have a look at the new db:get-value and db:put-value >>>>> functions [1]: These functions have particularly been designed to >>>>> organize XQuery items in databases, making casts to JSON or XML >>>>> obsolete. >>>>> >>>>> Hope this helps, >>>>> Christian >>>>> >>>>> [1] https://docs.basex.org/wiki/Database_Module#db:get-value >>>>> >>>>