Mercurial > hg > blitz_condensed
annotate src/org/dancres/blitz/meta/RegistryFactory.java @ 33:0b9265358617
Added tag 2.1.1 for changeset a77f0a9ed93c
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 12 Jun 2010 10:52:10 +0100 |
parents | 3dc0c5604566 |
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0
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1 package org.dancres.blitz.meta; |
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2 |
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3 import java.io.File; |
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4 import java.io.IOException; |
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5 |
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6 import java.util.Map; |
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7 import java.util.HashMap; |
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8 |
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9 import org.dancres.blitz.disk.Disk; |
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10 |
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11 public class RegistryFactory { |
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12 private static Map theMetas = new HashMap(); |
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13 |
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14 /** |
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15 @param aName the name of the registry you wish to load/create |
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16 @param anInitializer Registry instances are created under a transaction. |
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17 Certain uses may require that initialization be done under the same |
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18 transaction. In these cases, the caller should pass in an Initializer |
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19 instance containing the appropriate "boot code". If no initialization |
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20 is required, the caller may pass <code>null</code>. |
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21 */ |
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22 public static Registry get(String aName, Initializer anInitializer) |
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23 throws IOException { |
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24 |
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25 synchronized(theMetas) { |
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26 Registry myData = (Registry) theMetas.get(aName); |
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27 |
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28 if (myData == null) { |
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29 myData = new RegistryImpl(aName, anInitializer); |
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30 theMetas.put(aName, myData); |
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31 } |
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32 |
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33 return myData; |
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34 } |
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35 } |
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36 |
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37 public static boolean exists(String aName) { |
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38 return RegistryImpl.exists(aName); |
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39 } |
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40 |
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41 public static void delete(String aName) throws IOException { |
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42 synchronized(theMetas) { |
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43 RegistryImpl myData = (RegistryImpl) theMetas.get(aName); |
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44 |
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45 if (myData != null) { |
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46 theMetas.remove(aName); |
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47 myData.delete(); |
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48 } |
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49 } |
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Dan Creswell <dan.creswell@gmail.com>
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50 } |
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51 } |