org.apache.manifoldcf.core.database

Class MergedResultSet

java.lang.Object

org.apache.manifoldcf.core.database.MergedResultSet

All Implemented Interfaces:

IResultSet

public class MergedResultSet
extends java.lang.Object
implements IResultSet

This class merges several resultsets together to make what appears to be a single one. This is very useful when queries are broken up due to restrictions in the length of an IN clause, but the results may need to be merged at the end.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	_rcsid
protected java.util.ArrayList	resultSets
protected int	totalRowCount

Constructor Summary

Constructors

Constructor and Description
MergedResultSet()

Method Summary

Modifier and Type	Method and Description
void	addResultSet(IResultSet set)
IResultRow	getRow(int rowNumber) Get a specific row in the resultset.
int	getRowCount() Get the number of rows in this resultset.
IResultRow[]	getRows() Get an array of all the rows.

Methods inherited from class java.lang.Object

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

Field Detail

_rcsid

public static final java.lang.String _rcsid

See Also:

Constant Field Values

resultSets

protected java.util.ArrayList resultSets

totalRowCount

protected int totalRowCount

Constructor Detail

MergedResultSet

public MergedResultSet()

Method Detail

addResultSet

public void addResultSet(IResultSet set)

getRow

public IResultRow getRow(int rowNumber)

Get a specific row in the resultset.

Specified by:

getRow in interface IResultSet

Parameters:

rowNumber - is the number of the row.

Returns:

the immutable row description, or null if there is no such row.

getRowCount

public int getRowCount()

Get the number of rows in this resultset.

Specified by:

getRowCount in interface IResultSet

Returns:

the number of rows the resultset contains.

getRows

public IResultRow[] getRows()

Get an array of all the rows. This method is NOT preferred because it requires a new array object to be constructed.

Specified by:

getRows in interface IResultSet

Returns:

the array.