1 files changed, 157 insertions, 0 deletions

diff --git a/src/de/lmu/ifi/dbs/elki/gui/multistep/panels/EvaluationTabPanel.java b/src/de/lmu/ifi/dbs/elki/gui/multistep/panels/EvaluationTabPanel.java
new file mode 100644
index 00000000..0f7a6776
--- /dev/null
+++ b/src/de/lmu/ifi/dbs/elki/gui/multistep/panels/EvaluationTabPanel.java
@@ -0,0 +1,157 @@
+package de.lmu.ifi.dbs.elki.gui.multistep.panels;
+/*
+This file is part of ELKI:
+Environment for Developing KDD-Applications Supported by Index-Structures
+
+Copyright (C) 2011
+Ludwig-Maximilians-Universität München
+Lehr- und Forschungseinheit für Datenbanksysteme
+ELKI Development Team
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import java.lang.ref.WeakReference;
+
+import de.lmu.ifi.dbs.elki.database.Database;
+import de.lmu.ifi.dbs.elki.result.HierarchicalResult;
+import de.lmu.ifi.dbs.elki.utilities.designpattern.Observer;
+import de.lmu.ifi.dbs.elki.utilities.exceptions.AbortException;
+import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.Parameterization;
+import de.lmu.ifi.dbs.elki.workflow.EvaluationStep;
+
+/**
+ * Panel to handle result evaluation
+ * 
+ * @author Erich Schubert
+ */
+public class EvaluationTabPanel extends ParameterTabPanel implements Observer<Object> {
+  /**
+   * Serial version.
+   */
+  private static final long serialVersionUID = 1L;
+
+  /**
+   * The data input configured
+   */
+  private EvaluationStep evals = null;
+
+  /**
+   * Result we ran last onn
+   */
+  private WeakReference<?> basedOnResult = null;
+
+  /**
+   * Input step to run on.
+   */
+  private final InputTabPanel input;
+
+  /**
+   * Algorithm step to run on.
+   */
+  private final AlgorithmTabPanel algs;
+
+  /**
+   * Constructor. We depend on an input panel.
+   * 
+   * @param input Input panel to depend on.
+   */
+  public EvaluationTabPanel(InputTabPanel input, AlgorithmTabPanel algs) {
+    super();
+    this.input = input;
+    this.algs = algs;
+    input.addObserver(this);
+    algs.addObserver(this);
+  }
+
+  @Override
+  protected synchronized void configureStep(Parameterization config) {
+    evals = config.tryInstantiate(EvaluationStep.class);
+    if(config.getErrors().size() > 0) {
+      evals = null;
+    }
+    basedOnResult = null;
+  }
+
+  @Override
+  protected void executeStep() {
+    if(input.canRun() && !input.isComplete()) {
+      input.execute();
+    }
+    if(algs.canRun() && !algs.isComplete()) {
+      algs.execute();
+    }
+    if(!input.isComplete() || !algs.isComplete()) {
+      throw new AbortException("Input data not available.");
+    }
+    // Get the database and run the algorithms
+    Database database = input.getInputStep().getDatabase();
+    HierarchicalResult result = algs.getAlgorithmStep().getResult();
+    evals.runEvaluators(result, database);
+    basedOnResult = new WeakReference<Object>(result);
+  }
+
+  /**
+   * Get the evaluation step.
+   * 
+   * @return Evaluation step
+   */
+  public EvaluationStep getEvaluationStep() {
+    if(evals == null) {
+      throw new AbortException("Evaluators not configured.");
+    }
+    return evals;
+  }
+
+  @Override
+  protected String getStatus() {
+    if(evals == null) {
+      return STATUS_UNCONFIGURED;
+    }
+    if(!input.canRun() || !algs.canRun()) {
+      return STATUS_CONFIGURED;
+    }
+    checkDependencies();
+    if(input.isComplete() && algs.isComplete() && basedOnResult != null) {
+      //if(evals.getResult() == null) {
+        //return STATUS_FAILED;
+      //}
+      //else {
+        return STATUS_COMPLETE;
+      //}
+    }
+    return STATUS_READY;
+  }
+
+  @Override
+  public void update(Object o) {
+    if(o == input || o == algs) {
+      checkDependencies();
+      updateStatus();
+    }
+  }
+
+  /**
+   * Test if the dependencies are still valid.
+   */
+  private void checkDependencies() {
+    if(basedOnResult != null) {
+      if(!input.isComplete() || !algs.isComplete() || basedOnResult.get() != algs.getAlgorithmStep().getResult()) {
+        // We've become invalidated, notify.
+        basedOnResult = null;
+        observers.notifyObservers(this);
+      }
+    }
+  }
+}
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