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

Necessary interfaces to implement text parsers.

See:
Description

Interface Summary
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
EscapeQuerySyntax.Type | Type of escaping: String for escaping syntax, NORMAL for escaping reserved words (like AND) in terms

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

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.

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