Examples with ExplainWriter io.mycat.calcite.ExplainWriter used on opensource projects

Example 1 with ExplainWriter

use of io.mycat.calcite.ExplainWriter in project Mycat2 by MyCATApache.

the class PlanImpl method explain.

public List<String> explain(MycatDataContext dataContext, DrdsSqlWithParams drdsSql, boolean code) {
    ArrayList<String> list = new ArrayList<>();
    ExplainWriter explainWriter = new ExplainWriter();
    switch(this.type) {
        case PHYSICAL:
            Optional<ExplainDetail> singleViewOptional = ColocatedPlanner.executeQuery(dataContext, this, drdsSql);
            if (singleViewOptional.isPresent()) {
                ExplainDetail explainDetail = singleViewOptional.get();
                list.add("ColocatedPushDown:");
                list.add(explainDetail.toString());
            }
            list.add("\n");
            list.add("Plan:");
            String s = dumpPlan();
            list.addAll(Arrays.asList(s.split("\n")));
            List<SpecificSql> map = specificSql(drdsSql, dataContext);
            for (SpecificSql specificSql : map) {
                list.addAll(Arrays.asList(specificSql.toString().split("\n")));
            }
            if (code) {
                list.add("Code:");
                list.addAll(Arrays.asList(getCodeExecuterContext().getCodeContext().getCode().split("\n")));
            }
            break;
        case UPDATE:
            {
                Collection<VertxExecuter.EachSQL> eachSQLS = VertxUpdateExecuter.explainUpdate(drdsSql, dataContext);
                for (VertxExecuter.EachSQL eachSQL : eachSQLS) {
                    list.add(eachSQL.toString());
                }
                break;
            }
        case INSERT:
            {
                Iterable<VertxExecuter.EachSQL> eachSQLS = (VertxExecuter.explainInsert((SQLInsertStatement) drdsSql.getParameterizedStatement(), drdsSql.getParams()));
                for (VertxExecuter.EachSQL eachSQL : eachSQLS) {
                    list.add(eachSQL.toString());
                }
                break;
            }
        default:
            throw new IllegalStateException("Unexpected value: " + this.type);
    }
    for (String s1 : explainWriter.getText().split("\n")) {
        list.add(s1);
    }
    return list.stream().filter(i -> !i.isEmpty()).collect(Collectors.toList());
}