Package org.apache.lucene.queryparser.flexible.core.parser

Necessary interfaces to implement text parsers.

Parser

The package org.apache.lucene.queryparser.flexible.parser contains interfaces that should be implemented by the parsers.

Parsers produce QueryNode Trees from a string object. These package still needs some work to add support to for multiple parsers.

Features that should be supported for the future, related with the parser:

• QueryNode tree should be able convertible to any parser syntax.
• The query syntax should support calling other parsers.
• QueryNode tree created by multiple parsers.

Interface Summary

Interface	Description
EscapeQuerySyntax	A parser needs to implement EscapeQuerySyntax to allow the QueryNode to escape the queries, when the toQueryString method is called.
SyntaxParser	A parser needs to implement SyntaxParser interface

Enum Summary

Enum	Description
EscapeQuerySyntax.Type	Type of escaping: String for escaping syntax, NORMAL for escaping reserved words (like AND) in terms