if (expressionParser == null) {
// default to mixed mode
expressionParser = new SpelExpressionParser(new SpelParserConfiguration(SpelCompilerMode.MIXED, null));
}
this.expression = expressionParser.parseExpression(expression);
this.methods = new MessageExpressionMethods(evaluationContext, true, true);
log.info("Using expression=[" + this.expression.getExpressionString() + "]");
}