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| Necessary interfaces to implement text parsers. |
| |
| <h2>Parser</h2> |
| <p> |
| The package <tt>org.apache.lucene.queryparser.flexible.parser</tt> 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. |
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