Package cz.cvut.kbss.ontodriver.jena.query

Class AbstractResultSet

java.lang.Object

cz.cvut.kbss.ontodriver.jena.query.AbstractResultSet

All Implemented Interfaces:

ResultSet, AutoCloseable, Iterable<ResultRow>

Direct Known Subclasses:

AskResultSet, SelectResultSet

public abstract class AbstractResultSet
extends Object
implements ResultSet

Constructor Summary

Constructors

Constructor	Description
AbstractResultSet()

Method Summary

Modifier and Type	Method	Description
void	close()	Closes this result set releasing any sub-resources it holds.
void	first()	Move the cursor to the first row.
int	getRowIndex()	Retrieves index of the current row.
Statement	getStatement()	Retrieves the Statement that produced this ResultSet object.
boolean	hasNext()	Returns true if the cursor does not point at the last row in this result set.
boolean	isFirst()	Returns true if the cursor is at the first row of this result set.
boolean	isOpen()	Retrieves status of this result set.
void	last()	Move the cursor to the last row in this results set.
void	next()	Move the cursor one row forward.
void	previous()	Move the cursor one row backwards.
void	relative(int rows)	Move the cursor a relative number of rows, either positive or negative.
void	setRowIndex(int newIndex)	Move the cursor to the specified row index.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface cz.cvut.kbss.ontodriver.ResultSet

findColumn, getBoolean, getBoolean, getByte, getByte, getColumnCount, getDouble, getDouble, getFloat, getFloat, getInt, getInt, getLong, getLong, getObject, getObject, getObject, getObject, getShort, getShort, getString, getString, isBound, isBound, iterator, spliterator, stream

Constructor Details

AbstractResultSet

public AbstractResultSet()

Method Details

getStatement

public Statement getStatement()

Description copied from interface: ResultSet

Retrieves the Statement that produced this ResultSet object. If this result set was generated some other way, this method will return null.

Specified by:

getStatement in interface ResultSet

Returns:

The Statement that produced this ResultSet or null

isFirst

public boolean isFirst()

Description copied from interface: ResultSet

Returns true if the cursor is at the first row of this result set.

Specified by:

isFirst in interface ResultSet

Returns:

True if the cursor is at the first row, false otherwise

last

public void last()

Description copied from interface: ResultSet

Move the cursor to the last row in this results set.

Note that since the result set may be asynchronously updated, the last row does not have to always be the same.

Specified by:

last in interface ResultSet

first

public void first()

Description copied from interface: ResultSet

Move the cursor to the first row.

Specified by:

first in interface ResultSet

hasNext

public boolean hasNext()

Description copied from interface: ResultSet

Returns true if the cursor does not point at the last row in this result set.

Specified by:

hasNext in interface ResultSet

Returns:

True if there is at least one next row

next

public void next()

Description copied from interface: ResultSet

Move the cursor one row forward.

Specified by:

next in interface ResultSet

previous

public void previous()

Description copied from interface: ResultSet

Move the cursor one row backwards.

Specified by:

previous in interface ResultSet

relative

public void relative(int rows)

Description copied from interface: ResultSet

Move the cursor a relative number of rows, either positive or negative.

Specified by:

relative in interface ResultSet

Parameters:

rows - The number of rows to move the cursor of

getRowIndex

public int getRowIndex()

Description copied from interface: ResultSet

Retrieves index of the current row.

The first row has index 0.

Specified by:

getRowIndex in interface ResultSet

Returns:

the current row index, -1 if there is no current row

setRowIndex

public void setRowIndex(int newIndex)

Description copied from interface: ResultSet

Move the cursor to the specified row index.

The first row has index 0.

Specified by:

setRowIndex in interface ResultSet

Parameters:

newIndex - Index to move the cursor to

close

public void close()
           throws JenaDriverException

Description copied from interface: ResultSet

Closes this result set releasing any sub-resources it holds.

After closing the result set is not usable any more and calling methods on it (except close and isOpen) will result in OntoDriverException.

Calling close on already closed resource does nothing.

Calling this method also results in immediate disconnection of all registered observers and cancellation of any running reasoning associated with this result set.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface ResultSet

Throws:

JenaDriverException

isOpen

public boolean isOpen()

Description copied from interface: ResultSet

Retrieves status of this result set.

Specified by:

isOpen in interface ResultSet

Returns:

true if the resource is open, false otherwise