ValuePathEvaluator (OpenGamma Strata)

java.lang.Object
- com.opengamma.strata.report.framework.expression.ValuePathEvaluator

```
public final class ValuePathEvaluator
extends Object
```
Evaluates a path describing a value to be shown in a trade report.
For example, if the expression is 'Product.index.name' and the results contain FraTrade instances the following calls will be made for each trade in the results:
- FraTrade.getProduct() returning a Fra
- Fra.getIndex() returning an IborIndex
- IborIndex.getName() returning the index name
The result of evaluating the expression is the index name.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static List<Result<?>>`	`evaluate(String valuePath, ReportCalculationResults results)`	Evaluates a value path against a set of results, returning the resolved result for each trade.
`static Optional<Measure>`	`measure(String valuePath)`	Gets the measure encoded in a value path, if present.
`static Set<String>`	`tokens(Object object)`	Gets the supported tokens on the given object.

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

- Method Detail
  - measure
```
public static Optional<Measure> measure(String valuePath)
```
    Gets the measure encoded in a value path, if present.
    
    Parameters:
    
    valuePath - the value path
    
    Returns:
    
    the measure, if present
  - evaluate
```
public static List<Result<?>> evaluate(String valuePath,
                                       ReportCalculationResults results)
```
    Evaluates a value path against a set of results, returning the resolved result for each trade.
    
    Parameters:
    
    valuePath - the value path
    
    results - the calculation results
    
    Returns:
    
    the list of resolved results for each trade
  - tokens
```
public static Set<String> tokens(Object object)
```
    Gets the supported tokens on the given object.
    
    Parameters:
    
    object - the object for which to return the valid tokens
    
    Returns:
    
    the tokens