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:

Query.getResult(), Query snapshot isolation

Method Summary

Modifier and Type	Method and Description
void	close()
List<String>	getFieldNames() Returns the names of the fields in the result
List<Class<?>>	getFieldTypes() Returns the types of the fields in the result

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Method Detail

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