nxt.http

Class PublishExchangeOffer

java.lang.Object

nxt.http.APIServlet.APIRequestHandler

nxt.http.PublishExchangeOffer

public final class PublishExchangeOffer
extends APIServlet.APIRequestHandler

Publish exchange offer for CurrencyType.EXCHANGEABLE currency

Parameters

• currency - currency id of an active currency
• buyRateNQT - NXT amount for buying a currency unit specified in NQT
• sellRateNQT - NXT amount for selling a currency unit specified in NQT
• initialBuySupply - Initial number of currency units offered to buy by the publisher
• initialSellSupply - Initial number of currency units offered for sell by the publisher
• totalBuyLimit - Total number of currency units which can be bought from the offer
• totalSellLimit - Total number of currency units which can be sold from the offer
• expirationHeight - Blockchain height at which the offer is expired

Publishing an exchange offer internally creates a buy offer and a counter sell offer linked together. Typically the buyRateNQT specified would be less than the sellRateNQT thus allowing the publisher to make profit

Each CurrencyBuy transaction which matches this offer reduces the sell supply and increases the buy supply Similarly, each CurrencySell transaction which matches this offer reduces the buy supply and increases the sell supply Therefore the multiple buy/sell transaction can be issued against this offer during it's lifetime. However, the total buy limit and sell limit stops exchanging based on this offer after the accumulated buy/sell limit is reached after possibly multiple exchange operations.

Only one exchange offer is allowed per account. Publishing a new exchange offer when another exchange offer exists for the account, removes the existing exchange offer and publishes the new exchange offer

Field Summary

Fields inherited from class nxt.http.APIServlet.APIRequestHandler

DESCRIPTION_FIELD, MESSAGE_FIELD, NAME_FIELD

Method Summary

Modifier and Type	Method and Description
protected boolean	allowRequiredBlockParameters()
protected org.json.simple.JSONStreamAware	processRequest(javax.servlet.http.HttpServletRequest req)
protected boolean	requirePost()

Methods inherited from class nxt.http.APIServlet.APIRequestHandler

getAPITags, getFileParameter, getParameters, processRequest, requireBlockchain, requireFullClient, requirePassword, startDbTransaction

Methods inherited from class java.lang.Object

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

Method Detail

processRequest

protected org.json.simple.JSONStreamAware processRequest(javax.servlet.http.HttpServletRequest req)
                                                  throws NxtException

Specified by:

processRequest in class APIServlet.APIRequestHandler

Throws:

NxtException

requirePost

protected final boolean requirePost()

Overrides:

requirePost in class APIServlet.APIRequestHandler

allowRequiredBlockParameters

protected final boolean allowRequiredBlockParameters()

Overrides:

allowRequiredBlockParameters in class APIServlet.APIRequestHandler