AbstractMapTransform

java.lang.Object
- com.inductiveautomation.perspective.gateway.binding.transforms.AbstractSynchronousTransform
- - com.inductiveautomation.perspective.gateway.binding.transforms.map.AbstractMapTransform

All Implemented Interfaces:

Transform
```
public abstract class AbstractMapTransform
extends AbstractSynchronousTransform
```
Base class for a Map Transform. Handles thread-safe scheduling of its MappingCollection's updates and is the liaison between the BindingContext and the MappingCollection.

Field Summary

Fields
Modifier and Type Field Description

protected BindingContext context

protected MappingElement fallback

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`shutdown()`	Shutdown hook called by the `AbstractBindingHarness`.
`void`	`startup()`	Startup hook called by the `AbstractBindingHarness`.
`protected QualifiedValue`	`synchronousTransformInternal(QualifiedValue value)`	Perform a blocking transformation on a `QualifiedValue`, returning the transformed value as a QualifiedValue.

Methods inherited from class com.inductiveautomation.perspective.gateway.binding.transforms.AbstractSynchronousTransform
transform

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

- Field Detail
  - context
```
protected final BindingContext context
```
  - fallback
```
protected final MappingElement fallback
```
- Method Detail
  - startup
```
public void startup()
```
    Description copied from interface: Transform
    
    Startup hook called by the AbstractBindingHarness. This method will run on the SessionContext's ExecutionQueue thread. The default implementation is a no-op.
  - shutdown
```
public void shutdown()
```
    Description copied from interface: Transform
    
    Shutdown hook called by the AbstractBindingHarness. This method will run on the SessionContext's ExecutionQueue thread. The default implementation is a no-op.
  - synchronousTransformInternal
```
protected QualifiedValue synchronousTransformInternal(@Nonnull
                                                      QualifiedValue value)
```
    Description copied from class: AbstractSynchronousTransform
    
    Perform a blocking transformation on a QualifiedValue, returning the transformed value as a QualifiedValue.
    
    Specified by:
    
    synchronousTransformInternal in class AbstractSynchronousTransform
    
    Parameters:
    
    value - The input value to transform. The value will never be null.
    
    Returns:
    
    The transformed value.