com.google.bitcoin.wallet

Class DefaultRiskAnalysis

java.lang.Object

com.google.bitcoin.wallet.DefaultRiskAnalysis

All Implemented Interfaces:

RiskAnalysis

public class DefaultRiskAnalysis
extends Object
implements RiskAnalysis

The default risk analysis. Currently, it only is concerned with whether a tx/dependency is non-final or not. Outside of specialised protocols you should not encounter non-final transactions.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DefaultRiskAnalysis.Analyzer

Nested classes/interfaces inherited from interface com.google.bitcoin.wallet.RiskAnalysis

RiskAnalysis.Result

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	analyzed
protected List<Transaction>	dependencies
static DefaultRiskAnalysis.Analyzer	FACTORY
static BigInteger	MIN_ANALYSIS_NONDUST_OUTPUT Any standard output smaller than this value (in satoshis) will be considered risky, as it's most likely be rejected by the network.
protected Transaction	nonFinal
protected Transaction	tx
protected Wallet	wallet

Method Summary

Methods

Modifier and Type	Method and Description
RiskAnalysis.Result	analyze()
Transaction	getNonFinal() Returns the transaction that was found to be non-final, or null.
Transaction	getNonStandard() Returns the transaction that was found to be non-standard, or null.
Transaction	isStandard(Transaction tx) Checks if a transaction is considered "standard" by the reference client's IsStandardTx and AreInputsStandard functions.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

MIN_ANALYSIS_NONDUST_OUTPUT

public static final BigInteger MIN_ANALYSIS_NONDUST_OUTPUT

Any standard output smaller than this value (in satoshis) will be considered risky, as it's most likely be rejected by the network. Currently it's 546 satoshis. This is different from Transaction.MIN_NONDUST_OUTPUT because of an upcoming fee change in Bitcoin Core 0.9.

tx

protected final Transaction tx

dependencies

protected final List<Transaction> dependencies

wallet

protected final Wallet wallet

nonFinal

protected Transaction nonFinal

analyzed

protected boolean analyzed

FACTORY

public static DefaultRiskAnalysis.Analyzer FACTORY

Method Detail

analyze

public RiskAnalysis.Result analyze()

Specified by:

analyze in interface RiskAnalysis

isStandard

public Transaction isStandard(Transaction tx)

Checks if a transaction is considered "standard" by the reference client's IsStandardTx and AreInputsStandard functions.

Note that this method currently only implements a minimum of checks. More to be added later.

Returns:

Either null if the transaction is standard, or the first transaction found which is considered nonstandard

getNonStandard

@Nullable
public Transaction getNonStandard()

Returns the transaction that was found to be non-standard, or null.

getNonFinal

@Nullable
public Transaction getNonFinal()

Returns the transaction that was found to be non-final, or null.

toString

public String toString()

Overrides:

toString in class Object