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From sudheeshkatkam <...@git.apache.org>
Subject [GitHub] drill pull request #527: DRILL-4728: Add support for new metadata fetch APIs
Date Fri, 05 Aug 2016 22:09:19 GMT
Github user sudheeshkatkam commented on a diff in the pull request:

    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/PojoRecordReader.java
    @@ -47,24 +46,30 @@
     import org.apache.drill.exec.vector.AllocationHelper;
     import org.apache.drill.exec.vector.ValueVector;
    +import com.google.common.collect.ImmutableList;
     import com.google.common.collect.Lists;
    -public class PojoRecordReader<T> extends AbstractRecordReader {
    +public class PojoRecordReader<T> extends AbstractRecordReader implements Iterable<T>
       private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(PojoRecordReader.class);
       private static final ControlsInjector injector = ControlsInjectorFactory.getInjector(PojoRecordReader.class);
    -  public final int forJsonIgnore = 1;
       private final Class<T> pojoClass;
    -  private final Iterator<T> iterator;
    +  private final List<T> pojoObjects;
       private PojoWriter[] writers;
       private boolean doCurrent;
       private T currentPojo;
       private OperatorContext operatorContext;
    +  private Iterator<T> currentIterator;
    +  /**
    +   * TODO: Cleanup the callers to pass the List of POJO objects directly rather than
    +   * @param pojoClass
    +   * @param iterator
    +   */
       public PojoRecordReader(Class<T> pojoClass, Iterator<T> iterator) {
         this.pojoClass = pojoClass;
    -    this.iterator = iterator;
    +    this.pojoObjects = ImmutableList.copyOf(iterator);
    --- End diff --
    We lose laziness by doing this. I am not sure if queries will be impacted (queries on
information schema and sys tables), since this will be done at setup time?

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