This class is provided as a convenience for users who are only interested in the final state of an integration and not in the intermediate steps. Its handleStep method does nothing.
Since this class has no internal state, it is implemented using the Singleton design pattern. This means that only one instance is ever created, which can be retrieved using the getInstance method. This explains why there is no public constructor.
StepHandler
| Modifier and Type | Class and Description |
|---|---|
| private static class | DummyStepHandler.
Holder for the instance. |
| Access | Constructor and Description |
|---|---|
| private |
| Modifier and Type | Method and Description |
|---|---|
| public static DummyStepHandler | |
| public void | handleStep(final StepInterpolator
interpolator for the last accepted step. For
efficiency purposes, the various integrators reuse the same
object on each call, so if the instance wants to keep it across
all calls (for example to provide at the end of the integration a
continuous model valid throughout the integration range), it
should build a local copy using the clone method and store this
copy. interpolator, final boolean true if the step is the last one isLast)Implements org. Handle the last accepted step. |
| public void | init(double
start value of the independent time variable t0, double[] array containing the start value of the state vector y0, double target time for the integration t)Implements org. Initialize step handler at the start of an ODE integration. |
| private Object |
| DummyStepHandler | back to summary |
|---|---|
| private DummyStepHandler() Private constructor. The constructor is private to prevent users from creating instances (Singleton design-pattern). | |
| getInstance | back to summary |
|---|---|
| public static DummyStepHandler getInstance() Get the only instance.
| |
| handleStep | back to summary |
|---|---|
| public void handleStep(final StepInterpolator interpolator, final boolean isLast) Implements org. Handle the last accepted step. This method does nothing in this class.
| |
| init | back to summary |
|---|---|
| public void init(double t0, double[] y0, double t) Implements org. Doc from org. Initialize step handler at the start of an ODE integration. This method is called once at the start of the integration. It may be used by the step handler to initialize some internal data if needed.
| |
| readResolve | back to summary |
|---|---|
| private Object readResolve() Handle deserialization of the singleton.
| |
We use here the Initialization On Demand Holder Idiom.
| Modifier and Type | Field and Description |
|---|---|
| private static final DummyStepHandler | INSTANCE
Cached field instance. |
| Access | Constructor and Description |
|---|---|
| private |
| INSTANCE | back to summary |
|---|---|
| private static final DummyStepHandler INSTANCE Cached field instance. | |
| LazyHolder | back to summary |
|---|---|
| private LazyHolder() | |