[CMIS-344] Query parser should not use UTF-8 encoding - ASF JIRA

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QueryUtil converts the query statement to a UTF-8 encoded byte array which is used as input to the lexer instead of using the string directly.

Instead of

CharStream input = new ANTLRInputStream(new ByteArrayInputStream(statement.getBytes("UTF-8")));

the input stream should be obtained like this:

CharStream input = new ANTLRStringStream(statement);

The former method transforms the characters in the contains clause of the query

SELECT * FROM cmis:document WHERE CONTAINS ('\u4E2D\u6587')

in an incorrect way.