org.bitcoinj.wallet

Class DefaultRiskAnalysis

java.lang.Object

org.bitcoinj.wallet.DefaultRiskAnalysis

All Implemented Interfaces:

RiskAnalysis

public class DefaultRiskAnalysis
extends java.lang.Object
implements RiskAnalysis

The default risk analysis. Currently, it only is concerned with whether a tx/dependency is non-final or not, and whether a tx/dependency violates the dust rules. 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
static class	DefaultRiskAnalysis.RuleViolation The reason a transaction is considered non-standard, returned by isStandard(Transaction).

Nested classes/interfaces inherited from interface org.bitcoinj.wallet.RiskAnalysis

RiskAnalysis.Result

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	analyzed
protected java.util.List<Transaction>	dependencies
static DefaultRiskAnalysis.Analyzer	FACTORY
static Coin	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

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.
static DefaultRiskAnalysis.RuleViolation	isInputStandard(TransactionInput input) Checks if the given input passes some of the AreInputsStandard checks.
static DefaultRiskAnalysis.RuleViolation	isOutputStandard(TransactionOutput output) Checks the output to see if the script violates a standardness rule.
static DefaultRiskAnalysis.RuleViolation	isStandard(Transaction tx) Checks if a transaction is considered "standard" by Bitcoin Core's IsStandardTx and AreInputsStandard functions.
java.lang.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 Coin 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. This is usually the same as Transaction.MIN_NONDUST_OUTPUT but can be different when the fee is about to change in Bitcoin Core.

tx

protected final Transaction tx

dependencies

protected final java.util.List<Transaction> dependencies

wallet

@Nullable
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 static DefaultRiskAnalysis.RuleViolation isStandard(Transaction tx)

Checks if a transaction is considered "standard" by Bitcoin Core's IsStandardTx and AreInputsStandard functions.

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

isOutputStandard

public static DefaultRiskAnalysis.RuleViolation isOutputStandard(TransactionOutput output)

Checks the output to see if the script violates a standardness rule. Not complete.

isInputStandard

public static DefaultRiskAnalysis.RuleViolation isInputStandard(TransactionInput input)

Checks if the given input passes some of the AreInputsStandard checks. Not complete.

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 java.lang.String toString()

Overrides:

toString in class java.lang.Object