Package org.jfree.data.flow

Class FlowDatasetUtils

java.lang.Object

org.jfree.data.flow.FlowDatasetUtils

public class FlowDatasetUtils
extends Object

Utility methods related to FlowDataset.

Since:

1.5.3

Method Summary

Modifier and Type	Method	Description
static <K extends Comparable<K>> double	calculateInflow(FlowDataset<K> dataset, K node, int stage)	Returns the total inflow for the specified node (a destination node for the specified stage).
static <K extends Comparable<K>> double	calculateOutflow(FlowDataset<K> dataset, K source, int stage)	Returns the total outflow for the specified node (a source node for the specified stage).
static <K extends Comparable<K>> double	calculateTotalFlow(FlowDataset<K> dataset, int stage)	Returns the total flow from all sources to all destinations at the specified stage.
static <K extends Comparable<K>> boolean	hasFlowSelections(FlowDataset<K> dataset)	Returns true if any of the flows in the dataset have a property 'selected' with the value Boolean.TRUE, and false otherwise.
static <K extends Comparable<K>> boolean	hasNodeSelections(FlowDataset<K> dataset)	Returns true if any of the nodes in the dataset have a property 'selected' with the value Boolean.TRUE, and false otherwise.
static <K extends Comparable<K>> int	selectedNodeCount(FlowDataset<K> dataset)	Returns the number of selected nodes.

Methods inherited from class java.lang.Object

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

Method Details

calculateInflow

public static <K extends Comparable<K>> double calculateInflow(FlowDataset<K> dataset,
 K node,
 int stage)

Returns the total inflow for the specified node (a destination node for the specified stage).

Type Parameters:

K - the type for the flow identifiers.

Parameters:

dataset - the dataset (null not permitted).

node - the node (null not permitted).

stage - the stage.

Returns:

The total inflow volume.

calculateOutflow

public static <K extends Comparable<K>> double calculateOutflow(FlowDataset<K> dataset,
 K source,
 int stage)

Returns the total outflow for the specified node (a source node for the specified stage).

Type Parameters:

K - the type for the flow identifiers.

Parameters:

dataset - the dataset (null not permitted).

source - the source node (null not permitted).

stage - the stage.

Returns:

The total outflow volume.

calculateTotalFlow

public static <K extends Comparable<K>> double calculateTotalFlow(FlowDataset<K> dataset,
 int stage)

Returns the total flow from all sources to all destinations at the specified stage.

Type Parameters:

K - the type for the flow identifiers.

Parameters:

dataset - the dataset (null not permitted).

stage - the stage.

Returns:

The total flow.

hasNodeSelections

public static <K extends Comparable<K>> boolean hasNodeSelections(FlowDataset<K> dataset)

Returns true if any of the nodes in the dataset have a property 'selected' with the value Boolean.TRUE, and false otherwise.

Type Parameters:

K - the type for the node identifiers.

Parameters:

dataset - the dataset (null not permitted).

Returns:

A boolean.

selectedNodeCount

public static <K extends Comparable<K>> int selectedNodeCount(FlowDataset<K> dataset)

Returns the number of selected nodes.

Type Parameters:

K - the type for the node keys.

Parameters:

dataset - the dataset (null not permitted).

Returns:

The number of selected nodes.

hasFlowSelections

public static <K extends Comparable<K>> boolean hasFlowSelections(FlowDataset<K> dataset)

Returns true if any of the flows in the dataset have a property 'selected' with the value Boolean.TRUE, and false otherwise.

Type Parameters:

K - the type for the flow keys.

Parameters:

dataset - the dataset (null not permitted).

Returns:

A boolean.