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PRPersistence |
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1 /* 2 * Copyright (c) 1998-2001, The University of Sheffield. 3 * 4 * This file is part of GATE (see http://gate.ac.uk/), and is free 5 * software, licenced under the GNU Library General Public License, 6 * Version 2, June 1991 (in the distribution as file licence.html, 7 * and also available at http://gate.ac.uk/gate/licence.html). 8 * 9 * Valentin Tablan 26/10/2001 10 * 11 * $Id: PRPersistence.java,v 1.2 2001/10/29 17:11:26 valyt Exp $ 12 * 13 */ 14 package gate.util.persistence; 15 16 import gate.*; 17 import gate.creole.*; 18 import gate.util.*; 19 import gate.persist.PersistenceException; 20 21 import java.util.*; 22 23 24 public class PRPersistence extends ResourcePersistence { 25 /** 26 * Populates this Persistence with the data that needs to be stored from the 27 * original source object. 28 */ 29 public void extractDataFromSource(Object source)throws PersistenceException{ 30 if(! (source instanceof ProcessingResource)){ 31 throw new UnsupportedOperationException( 32 getClass().getName() + " can only be used for " + 33 ProcessingResource.class.getName() + 34 " objects!\n" + source.getClass().getName() + 35 " is not a " + ProcessingResource.class.getName()); 36 } 37 38 super.extractDataFromSource(source); 39 Resource res = (Resource)source; 40 41 ResourceData rData = (ResourceData) 42 Gate.getCreoleRegister().get(res.getClass().getName()); 43 if(rData == null) throw new PersistenceException( 44 "Could not find CREOLE data for " + 45 res.getClass().getName()); 46 47 //now get the runtime params 48 ParameterList params = rData.getParameterList(); 49 try{ 50 //get the values for the init time parameters 51 runtimeParams = Factory.newFeatureMap(); 52 //this is a list of lists 53 Iterator parDisjIter = ((List)params.getRuntimeParameters()).iterator(); 54 while(parDisjIter.hasNext()){ 55 Iterator parIter = ((List)parDisjIter.next()).iterator(); 56 while(parIter.hasNext()){ 57 Parameter parameter = (Parameter)parIter.next(); 58 String parName = parameter.getName(); 59 Object parValue = res.getParameterValue(parName); 60 ((Map)runtimeParams).put(parName,parValue); 61 } 62 } 63 runtimeParams = PersistenceManager. 64 getPersistentRepresentation(runtimeParams); 65 }catch(ResourceInstantiationException rie){ 66 throw new PersistenceException(rie); 67 } 68 } 69 70 /** 71 * Creates a new object from the data contained. This new object is supposed 72 * to be a copy for the original object used as source for data extraction. 73 */ 74 public Object createObject()throws PersistenceException, 75 ResourceInstantiationException{ 76 Object res = super.createObject(); 77 //now add the runtime parameters 78 if(runtimeParams != null){ 79 runtimeParams = PersistenceManager. 80 getTransientRepresentation(runtimeParams); 81 ((Resource)res).setParameterValues((FeatureMap)runtimeParams); 82 } 83 84 return res; 85 } 86 87 private Object runtimeParams; 88 static final long serialVersionUID = 2031381604712340552L; 89 }
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