/**
* Copyright (C) 2011-2012 Barchart, Inc. <http://www.barchart.com/>
*
* All rights reserved. Licensed under the OSI BSD License.
*
* http://www.opensource.org/licenses/bsd-license.php
*/
package com.barchart.feed.ddf.message.provider;
import static com.barchart.feed.base.book.enums.MarketBookAction.MODIFY;
import static com.barchart.feed.base.book.enums.MarketBookType.DEFAULT;
import static com.barchart.util.ascii.ASCII.COMMA;
import java.nio.ByteBuffer;
import com.barchart.feed.base.book.api.MarketBook;
import com.barchart.feed.base.book.api.MarketDoBookEntry;
import com.barchart.feed.base.book.enums.MarketBookSide;
import com.barchart.feed.base.provider.DefBookEntry;
import com.barchart.feed.ddf.message.api.DDF_MarketBookTop;
import com.barchart.feed.ddf.message.api.DDF_MessageVisitor;
import com.barchart.feed.ddf.message.enums.DDF_MessageType;
import com.barchart.feed.ddf.util.HelperDDF;
import com.barchart.feed.ddf.util.enums.DDF_Fraction;
import com.barchart.util.values.api.PriceValue;
import com.barchart.util.values.api.SizeValue;
import com.barchart.util.values.provider.ValueConst;
// TODO: Auto-generated Javadoc
class DF_28_BookTop extends BaseMarket implements DDF_MarketBookTop {
/*
* (non-Javadoc)
*
* @see
* com.barchart.feed.ddf.message.provider.Base#accept(com.barchart.feed.
* ddf.message.api.DDF_MessageVisitor, java.lang.Object)
*/
@Override
public <Result, Param> Result accept(
final DDF_MessageVisitor<Result, Param> visitor, final Param param) {
return visitor.visit(this, param);
}
DF_28_BookTop() {
super(DDF_MessageType.BOOK_TOP);
}
DF_28_BookTop(final DDF_MessageType messageType) {
super(messageType);
}
// //////////////////////////////////////
protected long priceBid = HelperDDF.DDF_EMPTY;
protected long priceAsk = HelperDDF.DDF_EMPTY;
protected long sizeBid = HelperDDF.DDF_EMPTY;
protected long sizeAsk = HelperDDF.DDF_EMPTY;
// //////////////////////////////////////
/*
* (non-Javadoc)
*
* @see com.barchart.feed.ddf.message.api.DDF_MarketBookTop#getPriceBid()
*/
@Override
public PriceValue getPriceBid() {
return HelperDDF.newPriceDDF(priceBid, getFraction());
}
/*
* (non-Javadoc)
*
* @see com.barchart.feed.ddf.message.api.DDF_MarketBookTop#getSizeBid()
*/
@Override
public SizeValue getSizeBid() {
return HelperDDF.newSizeDDF(sizeBid);
}
//
/*
* (non-Javadoc)
*
* @see com.barchart.feed.ddf.message.api.DDF_MarketBookTop#getPriceAsk()
*/
@Override
public PriceValue getPriceAsk() {
return HelperDDF.newPriceDDF(priceAsk, getFraction());
}
/*
* (non-Javadoc)
*
* @see com.barchart.feed.ddf.message.api.DDF_MarketBookTop#getSizeAsk()
*/
@Override
public SizeValue getSizeAsk() {
return HelperDDF.newSizeDDF(sizeAsk);
}
//
/*
* (non-Javadoc)
*
* @see
* com.barchart.feed.ddf.message.api.DDF_MarketBookTop#entry(com.barchart
* .feed.base.api.market.enums.MarketBookSide)
*/
@Override
public final MarketDoBookEntry entry(final MarketBookSide side) {
final PriceValue price;
final SizeValue size;
switch (side) {
case BID:
price = getPriceBid();
size = getSizeBid();
break;
case ASK:
price = getPriceAsk();
size = getSizeAsk();
break;
default:
assert false : "invalid side";
price = ValueConst.NULL_PRICE;
size = ValueConst.NULL_SIZE;
break;
}
/** XXX note: {@link MarketBook#ENTRY_TOP} */
final MarketDoBookEntry entry = new DefBookEntry(MODIFY, side, DEFAULT,
MarketBook.ENTRY_TOP, price, size);
return entry;
}
/*
* <soh><rec><symbol>,<subrec><stx><base><exch>(<delay>)(,)(<spread>)||
*
* <bid price>,<bid size>,<ask price>,<ask size>,
*
* ||<day><session><etx>||<time stamp>
*/
@Override
protected final void encodeBody(final ByteBuffer buffer) {
final DDF_Fraction frac = getFraction();
//
HelperDDF.decimalEncode(priceBid, frac, buffer, COMMA); // <bid price>,
HelperDDF.longEncode(sizeBid, buffer, COMMA); // <bid size>,
HelperDDF.decimalEncode(priceAsk, frac, buffer, COMMA); // <ask price>,
HelperDDF.longEncode(sizeAsk, buffer, COMMA); // <ask size>,
}
@Override
protected final void decodeBody(final ByteBuffer buffer) {
final DDF_Fraction frac = getFraction();
//
priceBid = HelperDDF.decimalDecode(frac, buffer, COMMA); //
sizeBid = HelperDDF.longDecode(buffer, COMMA); //
priceAsk = HelperDDF.decimalDecode(frac, buffer, COMMA); //
sizeAsk = HelperDDF.longDecode(buffer, COMMA); //
}
@Override
protected void appedFields(final StringBuilder text) {
super.appedFields(text);
text.append("priceBid : ");
text.append(getPriceBid());
text.append("\n");
text.append("sizeBid : ");
text.append(getSizeBid());
text.append("\n");
text.append("priceAsk : ");
text.append(getPriceAsk());
text.append("\n");
text.append("sizeAsk : ");
text.append(getSizeAsk());
text.append("\n");
}
}