Message Title

org.hibernate.jpa.criteria.expression.LiteralExpression

public String render(RenderingContext renderingContext) {
		if ( ValueHandlerFactory.isNumeric( literal ) ) {
			return ValueHandlerFactory.determineAppropriateHandler( (Class) literal.getClass() ).render( literal );
		}
		else if ( ValueHandlerFactory.isBoolean( literal ) ) {
			return ValueHandlerFactory.determineAppropriateHandler( (Class) literal.getClass() ).render( literal );
		}

		// else...
		final String parameterName = renderingContext.registerLiteralParameterBinding( getLiteral(), getJavaType() );
		return ':' + parameterName;
	}

substitutes the parameterName with the literal value when the type is Numeric or is a Boolean so no cast is needed in such cases

org.hibernate.jpa.criteria.expression.LiteralExpression#render(RenderingContext renderingContext)