org.apache.arrow.driver.jdbc

Class ArrowFlightJdbcCursor

java.lang.Object

org.apache.calcite.avatica.util.AbstractCursor

org.apache.arrow.driver.jdbc.ArrowFlightJdbcCursor

All Implemented Interfaces:

AutoCloseable, org.apache.calcite.avatica.util.Cursor

public class ArrowFlightJdbcCursor
extends org.apache.calcite.avatica.util.AbstractCursor

Arrow Flight Jdbc's Cursor class.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.avatica.util.AbstractCursor

org.apache.calcite.avatica.util.AbstractCursor.AbstractGetter, org.apache.calcite.avatica.util.AbstractCursor.ArrayAccessor, org.apache.calcite.avatica.util.AbstractCursor.Getter, org.apache.calcite.avatica.util.AbstractCursor.SlotGetter, org.apache.calcite.avatica.util.AbstractCursor.StructGetter

Nested classes/interfaces inherited from interface org.apache.calcite.avatica.util.Cursor

org.apache.calcite.avatica.util.Cursor.Accessor

Field Summary

Fields inherited from class org.apache.calcite.avatica.util.AbstractCursor

wasNull

Constructor Summary

Constructors

Constructor and Description
ArrowFlightJdbcCursor(VectorSchemaRoot root)

Method Summary

Modifier and Type	Method and Description
void	close()
List<org.apache.calcite.avatica.util.Cursor.Accessor>	createAccessors(List<org.apache.calcite.avatica.ColumnMetaData> columns, Calendar localCalendar, org.apache.calcite.avatica.util.ArrayImpl.Factory factory)
protected org.apache.calcite.avatica.util.AbstractCursor.Getter	createGetter(int column) ArrowFlightJdbcAccessors do not use AbstractCursor.Getter, as it would box primitive types and cause performance issues.
boolean	next()

Methods inherited from class org.apache.calcite.avatica.util.AbstractCursor

createAccessor, createAccessor, wasNull

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ArrowFlightJdbcCursor

public ArrowFlightJdbcCursor(VectorSchemaRoot root)

Method Detail

createAccessors

public List<org.apache.calcite.avatica.util.Cursor.Accessor> createAccessors(List<org.apache.calcite.avatica.ColumnMetaData> columns,
                                                                             Calendar localCalendar,
                                                                             org.apache.calcite.avatica.util.ArrayImpl.Factory factory)

Specified by:

createAccessors in interface org.apache.calcite.avatica.util.Cursor

Overrides:

createAccessors in class org.apache.calcite.avatica.util.AbstractCursor

createGetter

protected org.apache.calcite.avatica.util.AbstractCursor.Getter createGetter(int column)

ArrowFlightJdbcAccessors do not use AbstractCursor.Getter, as it would box primitive types and cause performance issues. Each Accessor implementation works directly on Arrow Vectors.

Specified by:

createGetter in class org.apache.calcite.avatica.util.AbstractCursor

next

public boolean next()

Specified by:

next in interface org.apache.calcite.avatica.util.Cursor

Specified by:

next in class org.apache.calcite.avatica.util.AbstractCursor

close

public void close()