Jack Conradson created LUCENE-5336: -------------------------------------- Summary: Add a simple QueryParser to parse human-entered queries. Key: LUCENE-5336 URL: https://issues.apache.org/jira/browse/LUCENE-5336 Project: Lucene - Core Issue Type: Improvement Reporter: Jack Conradson
I would like to add a new simple QueryParser to Lucene that is designed to parse human-entered queries. This parser will operate on an entire entered query using a specified single field or a set of weighted fields (using term boost). All features/operations in this parser can be enabled or disabled depending on what is necessary for the user. A default operator may be specified as either 'MUST' representing 'and' or 'SHOULD' representing 'or.' The features/operations that this parser will include are the following: * AND specified as '+' * OR specified as '|' * NOT specified as '-' * PHRASE surrounded by double quotes * PREFIX specified as '*' * PRECEDENCE surrounded by '(' and ')' * WHITESPACE specified as ' ' '\n' '\r' and '\t' will cause the default operator to be used * ESCAPE specified as '\' will allow operators to be used in terms The key differences between this parser and other existing parsers will be the following: * No exceptions will be thrown, and errors in syntax will be ignored. The parser will do a best-effort interpretation of any query entered. * It uses minimal syntax to express queries. All available operators are single characters or pairs of single characters. * The parser is hand-written and in a single Java file making it easy to modify. -- This message was sent by Atlassian JIRA (v6.1#6144) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org