| PRPersistence |

    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  }

| PRPersistence |