Package repast.simphony.data2

Class CountDataSource

java.lang.Object

repast.simphony.data2.CountDataSource

All Implemented Interfaces:

AggregateDataSource, DataSource

public class CountDataSource
extends Object
implements AggregateDataSource

AggregateDataSource that returns the count of a particular type of object. Given that data sources operate on specific object types, this can just return the size argument.

Author:

Nick Collier

Constructor Summary

Constructors

Constructor	Description
CountDataSource(String id, Class<?> sourceType)

Method Summary

Modifier and Type	Method	Description
Integer	get(Iterable<?> objs, int size)	Gets the data using the specified iterable.
Class<Integer>	getDataType()	Gets the type of data produced by this DataSource.
String	getId()	Gets the unique id of this DataSource.
Class<?>	getSourceType()	Gets the type of the object that this DataSource can retreive data from.
void	reset()	Resets this AggregateDataSource prior to the next get call.

Methods inherited from class java.lang.Object

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

Constructor Details

CountDataSource

public CountDataSource(String id,
 Class<?> sourceType)

Parameters:

id -

Method Details

getId

public String getId()

Description copied from interface: DataSource

Gets the unique id of this DataSource. The id should be unique across the DataSet that this source is added to.

Specified by:

getId in interface DataSource

Returns:

the unique id of this DataSource.

getDataType

public Class<Integer> getDataType()

Description copied from interface: DataSource

Gets the type of data produced by this DataSource.

Specified by:

getDataType in interface DataSource

Returns:

the type of data produced by this DataSource.

get

public Integer get(Iterable<?> objs,
 int size)

Description copied from interface: AggregateDataSource

Gets the data using the specified iterable.

Specified by:

get in interface AggregateDataSource

Parameters:

objs - the iterable over objects to use in getting the data

size - the number of objects in the iterable

Returns:

the data using the specified iterable.

reset

public void reset()

Description copied from interface: AggregateDataSource

Resets this AggregateDataSource prior to the next get call.

Specified by:

reset in interface AggregateDataSource

getSourceType

public Class<?> getSourceType()

Description copied from interface: DataSource

Gets the type of the object that this DataSource can retreive data from.

Specified by:

getSourceType in interface DataSource

Returns:

the type of the object that this DataSource can retreive data from.