QueryVisitorImpl.java 文件源码

private boolean checkWhereStatement(@NotNull QueryParser.WhereStatementContext ctx) {
    if ( ctx != null && ctx.getChildCount() > 1) {
        //visit predicate
        Result result = visit(ctx.predicate());
        //check if not in front predicate
        if ( ctx.getChild(1) instanceof TerminalNodeImpl )
            return ! (Boolean) result.getValue() ;
        else
            return (Boolean) result.getValue() ;
    }
    else
        return true;
}