Examples with DataReader edu.uci.ics.texera.storage.DataReader used on opensource projects

Example 6 with DataReader

use of edu.uci.ics.texera.storage.DataReader in project textdb by TextDB.

the class PlanStoreResource method getAllQueryPlans.

@GET
public QueryPlanListBean getAllQueryPlans() {
    ArrayList<QueryPlanBean> queryPlans = new ArrayList<>();
    try {
        // Getting an iterator for the plan store
        DataReader reader = planStore.getPlanIterator();
        reader.open();
        // Iterating through the stored plans, and mapping them to a QueryPlanRequest object
        Tuple tuple;
        while ((tuple = reader.getNextTuple()) != null) {
            String name = tuple.getField(PlanStoreConstants.NAME).getValue().toString();
            String description = tuple.getField(PlanStoreConstants.DESCRIPTION).getValue().toString();
            String logicalPlanJson = tuple.getField(PlanStoreConstants.LOGICAL_PLAN_JSON).getValue().toString();
            queryPlans.add(new QueryPlanBean(name, description, mapper.readValue(logicalPlanJson, LogicalPlan.class)));
        }
    } catch (TexeraException e) {
        throw new TexeraWebException(e.getMessage());
    } catch (IOException e) {
        throw new TexeraWebException("fail to parse json:\n" + e.getMessage());
    }
    return new QueryPlanListBean(queryPlans);
}