PipelineDescriber (Tapestry API - 5.9.2)

java.lang.Object
- org.apache.tapestry5.ioc.internal.services.PipelineDescriber

```
public final class PipelineDescriber
extends java.lang.Object
```
Describes an assembled pipeline as header: filter -> filter -> terminator.
The toString() of the bridge classes generated by BridgeBuilder delegates here, as does AssembledPipeline.

Since:

5.9.2

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static java.lang.String`	`describe(java.lang.String header, java.util.List<?> steps)`	Describes steps that have already been collected: the filters, in the order they are invoked, followed by the terminator.
`static java.lang.String`	`describe(java.lang.String header, PipelineStep step)`	Walks the pipeline from the given step to its end, describing each filter, including the terminator.
`static java.lang.String`	`header(java.lang.Class<?> serviceInterface, java.lang.Class<?> filterInterface)`	The header identifying a pipeline, ahead of its steps.

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

- Method Detail
  - header
```
public static java.lang.String header(java.lang.Class<?> serviceInterface,
                                      java.lang.Class<?> filterInterface)
```
    The header identifying a pipeline, ahead of its steps.
  - describe
```
public static java.lang.String describe(java.lang.String header,
                                        PipelineStep step)
```
    Walks the pipeline from the given step to its end, describing each filter, including the terminator.
    
    Parameters:
    
    header - identifies the pipeline, the steps follow it, separated by a colon
    
    step - where to start, typically the outermost bridge, but any step describes the pipeline from itself onwards
  - describe
```
public static java.lang.String describe(java.lang.String header,
                                        java.util.List<?> steps)
```
    Describes steps that have already been collected: the filters, in the order they are invoked, followed by the terminator.