DefaultOpHistory (SciJava Ops Engine 1.0.0 API)

java.lang.Object
- org.scijava.ops.engine.impl.DefaultOpHistory

All Implemented Interfaces:

Comparable<OpHistory>, OpHistory, Prioritized<OpHistory>
```
public class DefaultOpHistory
extends Object
implements OpHistory
```
Log describing each execution of an Op. This class is designed to answer two questions:
1. Given an Object output (e.g. a List<String>), what Op(s) mutated that output?
2. Given an Object op, what OpInfos were utilized to implement that Op's functionality?
The answers to these two questions allow users to produce an entire List<Graph<OpInfo>>, containing all of the information needed to reproduce any Object output.
Note that SciJava Ops is responsible for logging the returns to any matching calls here, but with some effort the user or other applications could also contribute their algorithms to the history.
Author:

Gabriel Selzer

Constructor Summary

Constructors
Constructor Description

DefaultOpHistory()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List<RichOp<?>>`	`executionsUpon(Object o)`	Returns the list of executions on `Object` `o` recorded in the history
`void`	`logOutput(RichOp<?> op, Object output)`
`double`	`priority()`

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

Methods inherited from interface org.scijava.priority.Prioritized
compareTo

- Constructor Detail
  - DefaultOpHistory
```
public DefaultOpHistory()
```
- Method Detail
  - executionsUpon
```
public List<RichOp<?>> executionsUpon(Object o)
```
    Returns the list of executions on Object o recorded in the history
    
    Specified by:
    
    executionsUpon in interface OpHistory
    
    Parameters:
    
    o - the Object of interest
    
    Returns:
    
    an Iterable of all executions upon o
  - logOutput
```
public void logOutput(RichOp<?> op,
                      Object output)
```
    Specified by:
    
    logOutput in interface OpHistory
  - priority
```
public double priority()
```
    Specified by:
    
    priority in interface Prioritized<OpHistory>