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annotate org.eclipse.jface.text/src/org/eclipse/jface/text/reconciler/AbstractReconcileStep.d @ 12:bc29606a740c

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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2006 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.jface.text.reconciler.AbstractReconcileStep;
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15 import org.eclipse.jface.text.reconciler.IReconciler; // packageimport
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16 import org.eclipse.jface.text.reconciler.DirtyRegionQueue; // packageimport
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17 import org.eclipse.jface.text.reconciler.IReconcilingStrategy; // packageimport
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18 import org.eclipse.jface.text.reconciler.IReconcilingStrategyExtension; // packageimport
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19 import org.eclipse.jface.text.reconciler.MonoReconciler; // packageimport
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20 import org.eclipse.jface.text.reconciler.IReconcileStep; // packageimport
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21 import org.eclipse.jface.text.reconciler.AbstractReconciler; // packageimport
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22 import org.eclipse.jface.text.reconciler.Reconciler; // packageimport
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23 import org.eclipse.jface.text.reconciler.IReconcilableModel; // packageimport
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24 import org.eclipse.jface.text.reconciler.DirtyRegion; // packageimport
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25 import org.eclipse.jface.text.reconciler.IReconcileResult; // packageimport
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26 import org.eclipse.jface.text.reconciler.IReconcilerExtension; // packageimport
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29 import java.lang.all;
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30 import java.util.Arrays;
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31 import java.util.Collection;
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32 import java.util.ArrayList;
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33 import java.util.Set;
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38 import org.eclipse.core.runtime.Assert;
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39 import org.eclipse.core.runtime.IProgressMonitor;
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40 import org.eclipse.jface.text.IRegion;
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41
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42
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43 /**
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44 * Abstract implementation of a reconcile step.
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45 *
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46 * @since 3.0
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47 */
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48 public abstract class AbstractReconcileStep : IReconcileStep {
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49
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50 private IReconcileStep fNextStep;
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51 private IReconcileStep fPreviousStep;
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52 private IProgressMonitor fProgressMonitor;
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53 protected IReconcilableModel fInputModel;
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54
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55 /**
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56 * Creates an intermediate reconcile step which adds
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57 * the given step to the pipe.
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58 *
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59 * @param step the reconcile step
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60 */
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61 public this(IReconcileStep step) {
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62 Assert.isNotNull(cast(Object)step);
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63 fNextStep= step;
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64 fNextStep.setPreviousStep(this);
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65 }
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66
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67 /**
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68 * Creates the last reconcile step of the pipe.
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69 */
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70 public this() {
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71 }
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72
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73 public bool isLastStep() {
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74 return fNextStep is null;
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75 }
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76
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77 public bool isFirstStep() {
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78 return fPreviousStep is null;
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79 }
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80
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81 /*
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82 * @see org.eclipse.text.reconcilerpipe.IReconcilerResultCollector#setProgressMonitor(org.eclipse.core.runtime.IProgressMonitor)
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83 */
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84 public void setProgressMonitor(IProgressMonitor monitor) {
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85 fProgressMonitor= monitor;
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86
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87 if (!isLastStep())
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88 fNextStep.setProgressMonitor(monitor);
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89 }
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90
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91 /*
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92 * @see org.eclipse.jface.text.reconciler.IReconcileStep#getProgressMonitor()
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93 */
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94 public IProgressMonitor getProgressMonitor() {
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95 return fProgressMonitor;
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96 }
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97
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98 /*
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99 * @see IReconcileStep#reconcile(IRegion)
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100 */
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101 public final IReconcileResult[] reconcile(IRegion partition) {
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102 IReconcileResult[] result= reconcileModel(null, partition);
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103 if (!isLastStep()) {
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104 fNextStep.setInputModel(getModel());
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105 IReconcileResult[] nextResult= fNextStep.reconcile(partition);
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106 return merge(result, convertToInputModel(nextResult));
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107 }
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108 return result;
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109 }
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110
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111 /*
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112 * @see IReconcileStep#reconcile(org.eclipse.jface.text.reconciler.DirtyRegion, org.eclipse.jface.text.IRegion)
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113 */
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114 public final IReconcileResult[] reconcile(DirtyRegion dirtyRegion, IRegion subRegion) {
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115 IReconcileResult[] result= reconcileModel(dirtyRegion, subRegion);
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116 if (!isLastStep()) {
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117 fNextStep.setInputModel(getModel());
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118 IReconcileResult[] nextResult= fNextStep.reconcile(dirtyRegion, subRegion);
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119 return merge(result, convertToInputModel(nextResult));
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120 }
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121 return result;
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122 }
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123
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124
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125 /**
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126 * Reconciles the model of this reconcile step. The
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127 * result is based on the input model.
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128 *
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129 * @param dirtyRegion the document region which has been changed
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130 * @param subRegion the sub region in the dirty region which should be reconciled
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131 * @return an array with reconcile results
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132 */
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133 abstract protected IReconcileResult[] reconcileModel(DirtyRegion dirtyRegion, IRegion subRegion);
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134
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135 /**
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136 * Adapts the given an array with reconcile results to
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137 * this step's input model and returns it.
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138 *
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139 * @param inputResults an array with reconcile results
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140 * @return an array with the reconcile results adapted to the input model
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141 */
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142 protected IReconcileResult[] convertToInputModel(IReconcileResult[] inputResults) {
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143 return inputResults;
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144 }
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145
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146 /**
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147 * Merges the two reconcile result arrays.
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148 *
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149 * @param results1 an array with reconcile results
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150 * @param results2 an array with reconcile results
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151 * @return an array with the merged reconcile results
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152 */
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153 private IReconcileResult[] merge(IReconcileResult[] results1, IReconcileResult[] results2) {
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154 if (results1 is null)
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155 return results2;
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156
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157 if (results2 is null)
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158 return results1;
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159
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160 // XXX: not yet performance optimized
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161 Collection collection= new ArrayList(Arrays.asList(arraycast!(Object)(results1)));
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162 collection.addAll(Arrays.asList(arraycast!(Object)(results2)));
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163 return arraycast!(IReconcileResult)(collection.toArray());
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164 }
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165
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166 /*
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167 * @see IProgressMonitor#isCanceled()
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168 */
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169 protected final bool isCanceled() {
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170 return fProgressMonitor !is null && fProgressMonitor.isCanceled();
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171 }
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172
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173 /*
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174 * @see IReconcileStep#setPreviousStep(IReconcileStep)
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175 */
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176 public void setPreviousStep(IReconcileStep step) {
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177 Assert.isNotNull(cast(Object)step);
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178 Assert.isTrue(fPreviousStep is null);
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179 fPreviousStep= step;
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180 }
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181
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182 /*
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183 * @see IReconcileStep#setInputModel(Object)
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184 */
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185 public void setInputModel(IReconcilableModel inputModel) {
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186 fInputModel= inputModel;
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187
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188 if (!isLastStep())
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189 fNextStep.setInputModel(getModel());
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190 }
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191
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192 /**
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193 * Returns the reconcilable input model.
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194 *
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195 * @return the reconcilable input model.
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196 */
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197 public IReconcilableModel getInputModel() {
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198 return fInputModel;
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199 }
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200
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201 /**
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202 * Returns the reconcilable model.
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203 *
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204 * @return the reconcilable model
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205 */
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206 abstract public IReconcilableModel getModel();
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207 }