Package nl.cwi.monetdb.embedded.tables

Class RowIterator

java.lang.Object

nl.cwi.monetdb.embedded.mapping.AbstractRowSet

nl.cwi.monetdb.embedded.tables.RowIterator

public final class RowIterator
extends AbstractRowSet

The iterator class for a MonetDB table. It's possible to inspect the current currentColumns in the row as well their mappings.

Author:

Pedro Ferreira

Field Summary

Fields inherited from class nl.cwi.monetdb.embedded.mapping.AbstractRowSet

mappings, rows

Method Summary

Modifier and Type	Method	Description
<T> T	getColumnByIndex(int index)	Gets a column value as a Java class using the default mapping.
<T> T	getColumnByIndex(int index, Class<T> javaClass)	Gets a column value as a Java class.
<T> T	getColumnByName(String columnName)	Gets a column value as a Java class using the default mapping.
<T> T	getColumnByName(String columnName, Class<T> javaClass)	Gets a column value as a Java class.
int	getColumnIndexByName(String columnName)	Gets a column index in the result set by name.
int	getCurrentIterationNumber()	Gets the current iteration number.
MonetDBRow	getCurrentRow()	Gets the current row currentColumns values as Java objects.
int	getCurrentTableRowNumber()	Gets the current row number of the table in the iteration.
int	getFirstIndex()	Gets the first index used on this iteration.
int	getLastIndex()	Gets the last index used on this iteration.
MonetDBTable	getTable()	Gets the original table of this iterator.
boolean	hasMore()	Checks if there are more rows to iterate after the current one.

Methods inherited from class nl.cwi.monetdb.embedded.mapping.AbstractRowSet

getNumberOfColumns, getQueryResultTable

Methods inherited from class java.lang.Object

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

Method Detail

getColumnIndexByName

public int getColumnIndexByName(String columnName)

Description copied from class: AbstractRowSet

Gets a column index in the result set by name.

Specified by:

getColumnIndexByName in class AbstractRowSet

Parameters:

columnName - The column name

Returns:

The index number

getTable

public MonetDBTable getTable()

Gets the original table of this iterator.

Returns:

The original table of this iterator

getFirstIndex

public int getFirstIndex()

Gets the first index used on this iteration.

Returns:

The first index used on this iteration

getLastIndex

public int getLastIndex()

Gets the last index used on this iteration.

Returns:

The last index used on this iteration

getCurrentIterationNumber

public int getCurrentIterationNumber()

Gets the current iteration number.

Returns:

The current iteration number

getCurrentTableRowNumber

public int getCurrentTableRowNumber()

Gets the current row number of the table in the iteration.

Returns:

The current row number of the table in the iteration

getCurrentRow

public MonetDBRow getCurrentRow()

Gets the current row currentColumns values as Java objects.

Returns:

The current row currentColumns values as Java objects

hasMore

public boolean hasMore()

Checks if there are more rows to iterate after the current one.

Returns:

There are more rows to iterate

getColumnByIndex

public <T> T getColumnByIndex(int index,
                              Class<T> javaClass)

Gets a column value as a Java class.

Type Parameters:

T - A Java class mapped to a MonetDB data type

Parameters:

index - The index of the column

javaClass - The Java class

Returns:

The column value as a Java class

getColumnByIndex

public <T> T getColumnByIndex(int index)

Gets a column value as a Java class using the default mapping.

Type Parameters:

T - A Java class mapped to a MonetDB data type

Parameters:

index - The index of the column

Returns:

The column value as a Java class

getColumnByName

public <T> T getColumnByName(String columnName,
                             Class<T> javaClass)

Gets a column value as a Java class.

Type Parameters:

T - A Java class mapped to a MonetDB data type

Parameters:

columnName - The name of the column

javaClass - The Java class

Returns:

The column value as a Java class

getColumnByName

public <T> T getColumnByName(String columnName)

Gets a column value as a Java class using the default mapping.

Type Parameters:

T - A Java class mapped to a MonetDB data type

Parameters:

columnName - The name of the column

Returns:

The column value as a Java class