Mercurial > hg > blitz_stable

annotate src/org/dancres/blitz/entry/SearchVisitor.java @ 0:3dc0c5604566

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Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
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3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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1 package org.dancres.blitz.entry;
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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2
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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3 import net.jini.core.transaction.TransactionException;
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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4
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Dan Creswell <dan.creswell@gmail.com>
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5 import org.dancres.blitz.mangler.MangledEntry;
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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6
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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7 /**
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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8 When an EntryRepository is asked to perform a search based on a template
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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9 it offers matches to a SearchVisitor until it either exhausts all
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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10 possibilities or is told to stop by the SearchVisitor. Note searches
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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11 should lock the state of the associated EntrySleeve whilst
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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12 <code>offer</code> is invoked to prevent acceptance by SearchVisitorImpl
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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13 which must later be cancelled due to the underlying EntrySleeve having
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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14 gone into an unreachable state.
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Dan Creswell <dan.creswell@gmail.com>
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15 */
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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16 public interface SearchVisitor {
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Dan Creswell <dan.creswell@gmail.com>
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17 /**
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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18 Returned from offer when the SearchVisitor wishes to exit the search
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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19 and doesn't wish to accept the offer.
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Dan Creswell <dan.creswell@gmail.com>
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20 */
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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21 public static final int STOP = 1;
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22
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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23 /**
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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24 Returned from offer when the SearchVisitor wishes to accept the offer.
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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25 The FS should make good on the offer before stopping the search.
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26 */
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27 public static final int ACCEPTED = 2;
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28
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Dan Creswell <dan.creswell@gmail.com>
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29 /**
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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30 Indicates the SearchVisitor cannot accept the offer and wishes search
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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31 to continue with more offers
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Dan Creswell <dan.creswell@gmail.com>
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32 */
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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33 public static final int TRY_AGAIN = 3;
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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34
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Dan Creswell <dan.creswell@gmail.com>
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35 /**
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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36 This method can also be used by the asynchronous recent write code.
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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37
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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38 @return STOP if the SearchVisitor wishes to halt the search and
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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39 doesn't want to act on the offer.
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Dan Creswell <dan.creswell@gmail.com>
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40 */
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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41 public int offer(SearchOffer anOffer);
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42
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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43 /**
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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44 @return <code>true</code> if this Visitor wishes to perform a take.
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Dan Creswell <dan.creswell@gmail.com>
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45 */
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Dan Creswell <dan.creswell@gmail.com>
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46 public boolean isDeleter();
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Dan Creswell <dan.creswell@gmail.com>
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47 }