problem in query operation with '<' and '>'

aused by: org.nuxeo.ecm.core.api.WrappedException: Exception: org.nuxeo.ecm.core.query.QueryParseException. message: org.nuxeo.ecm.core.query.QueryParseException: Lexical Error: Illegal character <&> at offset 70 in query: SELECT * From DocumentationItem where documentationitem:archival_date <= TIMESTAMP '2010-04-19 11:18:52.442'
at org.nuxeo.ecm.core.query.sql.SQLQueryParser.parse(SQLQueryParser.java:56)
at org.nuxeo.ecm.core.storage.sql.NXQLQueryMaker.buildQuery(NXQLQueryMaker.java:198)
at org.nuxeo.ecm.core.storage.sql.Mapper.query(Mapper.java:1946)
at org.nuxeo.ecm.core.storage.sql.SessionImpl.query(SessionImpl.java:714)
at org.nuxeo.ecm.core.storage.sql.ra.ConnectionImpl.query(ConnectionImpl.java:277)
at org.nuxeo.ecm.core.storage.sql.coremodel.SQLSession$SQLSessionQuery.execute(SQLSession.java:505)
at org.nuxeo.ecm.core.api.AbstractSession.query(AbstractSession.java:1377)
... 140 more
Caused by: org.nuxeo.ecm.core.api.WrappedException: Exception: org.nuxeo.ecm.core.query.QueryParseException. message: org.nuxeo.ecm.core.query.QueryParseException: Lexical Error: Illegal character <&> at offset 70
at org.nuxeo.ecm.core.query.sql.SQLQueryParser.parse(SQLQueryParser.java:46)
at org.nuxeo.ecm.core.query.sql.SQLQueryParser.parse(SQLQueryParser.java:52)
... 146 more
Caused by: org.nuxeo.ecm.core.api.WrappedException: Exception: org.nuxeo.ecm.core.query.QueryParseException. message: Lexical Error: Illegal character <&> at offset 70
at org.nuxeo.ecm.core.query.sql.parser.Scanner.scanError(Scanner.java:653)
at org.nuxeo.ecm.core.query.sql.parser.Scanner.next_token(Scanner.java:1082)
at java_cup.runtime.lr_parser.scan(lr_parser.java:335)
at java_cup.runtime.lr_parser.parse(lr_parser.java:563)
at org.nuxeo.ecm.core.query.sql.SQLQueryParser.parse(SQLQueryParser.java:44)
... 147 more