SqlParser.java 文件源码

/**
 * @throws InvalidQueryException if the given query contains invalid characters or is incomplete
 */
public SqlGrammarParser.SelectStatementContext parse(String query) {
    log.trace("About to parse [{}]", query);
    long now = currentTimeMillis();

    CharStream input = CharStreams.fromString(query);
    SqlGrammarLexer lexer = new SqlGrammarLexer(input);
    TokenStream tokenStream = new CommonTokenStream(lexer);
    SqlGrammarParser parser = new SqlGrammarParser(tokenStream);

    parser.removeErrorListeners();
    parser.addErrorListener(new RaiseExceptionErrorListener());

    SqlGrammarParser.SelectStatementContext result = parser.selectStatement();

    log.trace("Successfully parsed [{}] into [{}] in [{}ms]",
            query, result.toStringTree(parser), currentTimeMillis() - now);

    return result;
}