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ASF GitHub Bot commented on JENA-632: ------------------------------------- Github user afs commented on a diff in the pull request: https://github.com/apache/jena/pull/114#discussion_r176029548 --- Diff: jena-arq/Grammar/master.jj --- @@ -2176,6 +2251,19 @@ String String() : { Token t ; String lex ; } } } +#ifdef ARQ +Number Number() : { Token t ; Number number ; } +{ + ( + t = < INTEGER > { number = integerValue(t.image) ; } + | t = < DECIMAL > { number = doubleValue(t.image) ; } --- End diff -- Would this be simpler? Generate `Node` from the parser, The data structure is then `Map<String, Node> jsonMapping`. To use, lookup variables in the binding to get a `Node` and also use the `Node`s from `jsonMapping`. In the grammar, use `NumericLiteral() | BooleanLiteral()`, which return `Node`, then the sign of numbers is also handled. as well as booleans. When needing the item for making the JSON, apply `RDFTerm2Json`, as is done when a variable is used and turned into a Json value. There isn't a standard alone string rule returning a `Node`. The `String()` returns a string (it is used to make a RDF Literal, optional ^^ and @ parts) - to unify handling turn the string into a `Node` with `NodeFactory.createLiteral(t.image)`. > Generate JSON from SPARQL directly. > ----------------------------------- > > Key: JENA-632 > URL: https://issues.apache.org/jira/browse/JENA-632 > Project: Apache Jena > Issue Type: Improvement > Components: ARQ, Fuseki > Reporter: Andy Seaborne > Assignee: Bruno P. Kinoshita > Priority: Minor > Labels: java, javacc > Time Spent: 0.5h > Remaining Estimate: 0h > > The capability to generate JSON directly from a SPARQL (or extended SPARQL) > query would enable the creation of JSON data API over published linked data. > This project would cover: > # Design and publication of a design. > # Refinement of design based on community feed > # Implementation, including testing. > # Refinement of implementation based on community feed > Skills required: Java, some parser work, design and discussion with the user > community, basic understanding of HTTP and content negotiation. -- This message was sent by Atlassian JIRA (v7.6.3#76005)