Package com.opengamma.strata.report.framework.expression

Class TokenEvaluator<T>

java.lang.Object

com.opengamma.strata.report.framework.expression.TokenEvaluator<T>

Type Parameters:

T - the type of the target

Direct Known Subclasses:

BeanTokenEvaluator, CurrencyAmountTokenEvaluator, CurrencyParameterSensitivitiesTokenEvaluator, CurrencyParameterSensitivityTokenEvaluator, IterableTokenEvaluator, MapTokenEvaluator, PositionTokenEvaluator, SecurityTokenEvaluator, TradeTokenEvaluator

public abstract class TokenEvaluator<T>
extends Object

Evaluates a token against an object to produce another object.

Tokens are taken from expressions in a report template. These expressions tell the reporting framework how to navigate a tree of data to find values to include in the report.

For example, if the token is 'index' and the object is a Frathe method Fra.getIndex() will be invoked and the result will contain an IborIndex.

Constructor Summary

Constructors

Constructor	Description
TokenEvaluator()

Method Summary

Modifier and Type	Method	Description
protected EvaluationResult	ambiguousTokenFailure(T object, String token)	Generates a failure result for an ambiguous token.
abstract EvaluationResult	evaluate(T target, CalculationFunctions functions, String firstToken, List<String> remainingTokens)	Evaluates a token against a given object.
abstract Class<?>	getTargetType()	Gets the type against which tokens can be evaluated in this implementation.
protected EvaluationResult	invalidTokenFailure(T object, String token)	Generates a failure result for an invalid token.
abstract Set<String>	tokens(T object)	Gets the set of supported token for the given object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TokenEvaluator

public TokenEvaluator()

Method Detail

getTargetType

public abstract Class<?> getTargetType()

Gets the type against which tokens can be evaluated in this implementation.

Returns:

the evaluation type

tokens

public abstract Set<String> tokens(T object)

Gets the set of supported token for the given object.

Parameters:

object - the object against which tokens may be evaluated

Returns:

the set of supported tokens

evaluate

public abstract EvaluationResult evaluate(T target,
                                          CalculationFunctions functions,
                                          String firstToken,
                                          List<String> remainingTokens)

Evaluates a token against a given object.

Parameters:

target - the object against which to evaluate the token

functions - the calculation functions

firstToken - the first token of the expression

remainingTokens - the remaining tokens in the expression, possibly empty

Returns:

the result of the evaluation

invalidTokenFailure

protected EvaluationResult invalidTokenFailure(T object,
                                               String token)

Generates a failure result for an invalid token.

Parameters:

object - the object against which the failure occurred

token - the invalid token

Returns:

the failure result

ambiguousTokenFailure

protected EvaluationResult ambiguousTokenFailure(T object,
                                                 String token)

Generates a failure result for an ambiguous token.

Parameters:

object - the object against which the failure occurred.

token - the ambiguous token

Returns:

the failure result