Apache Olingo4 ExpressionVisitor

Question

How to pass a raw expression to ExpressionVisitor implementation of Odata4 using olingo4 . This is how it was done in olingo2 JDBC Visitor Filter

String rawExpression = "'a' eq 'b' or ('c' eq 'd' and 'b' eq 'd')";
FilterExpression expression = UriParser.parseFilter(null, null, rawExpression);
String whereClauseSimple = (String) expression.accept(new JdbcSimpleStringVisitor());

Answer 1

There is currently (released version 4.2.0) no API exposure for this functionality.

You could set a dependency to the server-core module directly and call "new Parser(edm,odata).parseUri(final String path, final String query, final String fragment)"

or use the filter parser direclty by creating a UriTokenizer and then calling "FilterParserparse(UriTokenizer tokenizer, final EdmType referencedType, final Collection crossjoinEntitySetNames, final Map aliases)"