org.verdictdb.connection

Class SparkQueryResult

java.lang.Object

org.verdictdb.commons.AttributeValueRetrievalHelper

org.verdictdb.connection.SparkQueryResult

All Implemented Interfaces:

Serializable, DbmsQueryResult

public class SparkQueryResult
extends AttributeValueRetrievalHelper
implements DbmsQueryResult

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SparkQueryResult(org.apache.spark.sql.Dataset<org.apache.spark.sql.Row> dataset)

Method Summary

Modifier and Type	Method and Description
int	getColumnCount()
String	getColumnName(int index)
int	getColumnType(int index)
DbmsQueryResultMetaData	getMetaData()
long	getRowCount() Returns the total number of rows.
Object	getValue(int index)
boolean	next() Forward a cursor to rows by one.
void	printContent()
void	rewind() set the index before the first one; when next() is called, the index will move to the first row.

Methods inherited from class org.verdictdb.commons.AttributeValueRetrievalHelper

getArray, getArray, getAsciiStream, getAsciiStream, getBigDecimal, getBigDecimal, getBigDecimal, getBigDecimal, getBinaryStream, getBinaryStream, getBlob, getBlob, getBoolean, getBoolean, getByte, getByte, getBytes, getBytes, getClob, getClob, getDate, getDate, getDouble, getDouble, getFloat, getFloat, getIndexOf, getInt, getInt, getLong, getLong, getNClob, getNClob, getRef, getRef, getRowId, getRowId, getShort, getShort, getSQLXML, getSQLXML, getString, getString, getTime, getTime, getTimestamp, getTimestamp, getUnicodeStream, getUnicodeStream, getURL, getURL

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.verdictdb.connection.DbmsQueryResult

getArray, getArray, getAsciiStream, getAsciiStream, getBigDecimal, getBigDecimal, getBigDecimal, getBigDecimal, getBinaryStream, getBinaryStream, getBlob, getBlob, getBoolean, getBoolean, getByte, getByte, getBytes, getBytes, getClob, getClob, getDate, getDate, getDouble, getDouble, getFloat, getFloat, getInt, getInt, getLong, getLong, getNClob, getNClob, getRef, getRef, getRowId, getRowId, getShort, getShort, getSQLXML, getSQLXML, getString, getString, getTime, getTime, getTimestamp, getTimestamp, getUnicodeStream, getUnicodeStream, getURL, getURL

Constructor Detail

SparkQueryResult

public SparkQueryResult(org.apache.spark.sql.Dataset<org.apache.spark.sql.Row> dataset)

Method Detail

getMetaData

public DbmsQueryResultMetaData getMetaData()

Specified by:

getMetaData in interface DbmsQueryResult

Returns:

Meta Data from ResultSet

getColumnCount

public int getColumnCount()

Specified by:

getColumnCount in interface DbmsQueryResult

Specified by:

getColumnCount in class AttributeValueRetrievalHelper

getColumnName

public String getColumnName(int index)

Specified by:

getColumnName in interface DbmsQueryResult

Specified by:

getColumnName in class AttributeValueRetrievalHelper

Parameters:

index - zero-based index

Returns:

getColumnType

public int getColumnType(int index)

Specified by:

getColumnType in interface DbmsQueryResult

Parameters:

index - zero-based index

Returns:

next

public boolean next()

Description copied from interface: DbmsQueryResult

Forward a cursor to rows by one. Similar to JDBC ResultSet.next().

Specified by:

next in interface DbmsQueryResult

Returns:

True if next row exists.

getValue

public Object getValue(int index)

Specified by:

getValue in interface DbmsQueryResult

Specified by:

getValue in class AttributeValueRetrievalHelper

Parameters:

index - This is a zero-based index.

Returns:

printContent

public void printContent()

Specified by:

printContent in interface DbmsQueryResult

rewind

public void rewind()

Description copied from interface: DbmsQueryResult

set the index before the first one; when next() is called, the index will move to the first row.

Specified by:

rewind in interface DbmsQueryResult

getRowCount

public long getRowCount()

Description copied from interface: DbmsQueryResult

Returns the total number of rows.

Specified by:

getRowCount in interface DbmsQueryResult

Returns: