1 /*******************************************************************************
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2 * Copyright (c) 2007, 2013 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.objmap.graph.rules.range;
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14 import java.lang.reflect.Field;
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16 import org.apache.log4j.Logger;
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17 import org.simantics.objmap.exceptions.MappingException;
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21 * Accesses the given field of the element.
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22 * @author Hannu Niemistö
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24 public class FieldAccessor<Range,T> implements IRangeAccessor<Range,T> {
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26 static Logger LOGGER = Logger.getLogger("org.simantics.objmap");
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30 public FieldAccessor(Field field) {
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35 public T get(Range element) throws MappingException {
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37 @SuppressWarnings("unchecked")
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38 T result = (T)field.get(element);
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40 if(LOGGER.isInfoEnabled())
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41 LOGGER.info(" FieldAccessor.get " +
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42 field.getName() + " -> " + result
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46 } catch (IllegalArgumentException e) {
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47 throw new MappingException(e);
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48 } catch (IllegalAccessException e) {
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49 throw new MappingException(e);
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54 public boolean set(Range element, T value) throws MappingException {
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56 Object currentValue = field.get(element);
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58 if(LOGGER.isInfoEnabled())
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59 LOGGER.info(" FieldAccessor.set " +
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60 field.getName() + " " + currentValue +
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65 ? (currentValue == null || field.getType().isPrimitive())
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66 : value.equals(currentValue))
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68 field.set(element, value);
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70 } catch (IllegalArgumentException e) {
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71 throw new MappingException(e);
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72 } catch (IllegalAccessException e) {
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73 throw new MappingException(e);
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