TransientDataHandler

All Implemented Interfaces:

org.apache.commons.math3.ode.sampling.StepHandler
```
public class TransientDataHandler
 implements StepHandler
                    
```
Step handler for capturing transient data during fluid solver ODE integration.
This class implements the Apache Commons Math StepHandler interface to collect time series data during numerical integration of ordinary differential equations in fluid queueing network analysis. It captures state vectors at each integration step for transient performance analysis.
Key capabilities:
- Dynamic storage of time points and state vectors
- Automatic array resizing for long simulations
- Non-negative value enforcement for physical constraints
- Memory optimization through array shrinking
Since:

1.0

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description
`public Matrix`	`tVec`
`public Matrix`	`xVec`

Constructor Summary

Constructors
Constructor	Description
`TransientDataHandler(int numDimensions)`	Constructs a transient data handler for the specified number of state dimensions.

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`void`	`handleStep(StepInterpolator interpolator, boolean isLast)`	Handles each integration step by storing the time and state vector data.
`void`	`init(double t0, Array<double> x0, double t)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - TransientDataHandler
```
TransientDataHandler(int numDimensions)
```
    Constructs a transient data handler for the specified number of state dimensions.
    
    Parameters:
    
    numDimensions - number of state variables in the ODE system
- Method Detail
  - handleStep
```
 void handleStep(StepInterpolator interpolator, boolean isLast)
```
    Handles each integration step by storing the time and state vector data.
    This method is called by the ODE integrator at each step. It captures the current time and interpolated state vector, enforcing non-negative constraints and managing dynamic array resizing as needed.
    
    Parameters:
    
    interpolator - provides access to current time and interpolated state
    
    isLast - indicates if this is the final integration step
  - init
```
 void init(double t0, Array<double> x0, double t)
```