Package com.orchestranetworks.query

Interface QueryResult<T>

All Superinterfaces:
AutoCloseable, Iterable<T>
public interface QueryResult<T> extends Iterable<T>, AutoCloseable
Represents the result of a query.

Traversing and closing the result

A QueryResult instance must always be closed after its use.

Here is a code sample benefiting from the automatic closing provided by AutoCloseable and its associated try-with-resources notation: 

 
 Query<Tuple> query = dataset.createQuery("SELECT id, name FROM customer");
 try (QueryResult<Tuple> result = query.getResult())
 {
        for (Tuple t : result)
        {
                Integer id = t.get(0, Integer.class);
                String name = t.get(1, String.class);
                ...
        }
 }

Note that a QueryResult supports just one active iterator at a time. When creating an iterator, any iterator previously created for this QueryResult will be invalidated.

Concurrency

A QueryResult instance is not thread-safe and it must be used only by the thread that created it.

If the table is concurrently updated, the rules specified by Query snapshot isolation apply.

Since:
6.0.0
See Also:

  • Method Details

    • getFieldNames

      List<String> getFieldNames()
      Returns the names of the fields in the result

    • getFieldTypes

      List<Class<?>> getFieldTypes()
      Returns the types of the fields in the result

    • close

      void close()
      Specified by:
      close in interface AutoCloseable