Add a reconfiguration component using fscript.

examples/reconfig/pom.xml

@@ -48,6 +48,13 @@
   </properties>
  
   <dependencies>
+    <!-- FraSCAti Explorer -->
+    <dependency>
+      <groupId>org.ow2.frascati</groupId>
+      <artifactId>frascati-explorer-fscript-plugin</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
@@ -66,4 +73,34 @@
       <version>1.0.3</version>
     </dependency>
   </dependencies>
+  
+  <!-- ========= -->
+  <!-- Profiles  -->
+  <!-- ========= -->
+
+  <profiles>
+    <profile>
+      <id>explorer</id>
+      <build>
+        <defaultGoal>exec:exec</defaultGoal>
+        <plugins>
+          <!-- Run the Explorer -->
+          <plugin>
+            <groupId>org.codehaus.mojo</groupId>
+            <artifactId>exec-maven-plugin</artifactId>
+            <configuration>
+              <executable>java</executable>
+              <arguments>
+                <argument>-Dfractal.provider=org.objectweb.fractal.julia.Julia</argument>
+                <argument>-cp</argument>
+                <classpath />
+                <argument>org.ow2.frascati.explorer.fscript.FrascatiScriptExplorerLauncher</argument>
+              </arguments>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+  
  </project>

examples/reconfig/src/main/java/org/ow2/frascati/examples/reconfig/converter/explorer/UpdaterPanel.java

+/***
+ * OW2 FraSCAti Examples: Fscript reconfiguration
+ * Copyright (C) 2010 INRIA, USTL
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Contact: frascati@ow2.org
+ *
+ * Author: Christophe Demarey
+ *
+ * Contributor(s): 
+ * 
+ */
+
+package org.ow2.frascati.examples.reconfig.converter.explorer;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.text.NumberFormat;
+
+import javax.swing.JButton;
+import javax.swing.JTextField;
+
+import org.objectweb.fractal.fscript.FScriptException;
+import org.ow2.frascati.examples.reconfig.converter.fscript.ExchangeRateUpdater;
+import org.ow2.frascati.explorer.gui.AbstractSelectionPanel;
+
+/**
+ * Is the FraSCAti Explorer plugin to show {@link ExchangeRateUpdater} instances.
+ *
+ * @author Christophe Demarey
+ */
+@SuppressWarnings("serial")
+public class UpdaterPanel extends AbstractSelectionPanel<ExchangeRateUpdater> {
+  private NumberFormat nf; // used to format double display
+  private JTextField jTextFieldValue;
+  private JButton jButtonUpdate;
+
+  /**
+   * Default constructor creates the panel.
+   */
+  public UpdaterPanel() {
+    super();
+    
+    nf = NumberFormat.getInstance();
+    nf.setMaximumFractionDigits(4);
+
+    jTextFieldValue = new JTextField();
+    jTextFieldValue.setColumns(10);
+    jButtonUpdate = new JButton("Update");
+
+    // layout
+    this.add(jTextFieldValue);
+    this.add(jButtonUpdate);
+    
+    // actions
+    jButtonUpdate.addActionListener( new ActionListener() {        
+        public void actionPerformed(ActionEvent e) {
+            if (jTextFieldValue.getText().length() > 0) {
+                double newValue = Double.parseDouble( jTextFieldValue.getText() );
+                try {
+                    selected.updateExchangeRate(newValue);
+                } catch (FScriptException e1) {
+                    System.out.println("Reconfiguration failed!");
+                    e1.printStackTrace();
+                }
+            }
+        }
+    });
+
+  }
+  
+}

examples/reconfig/src/main/java/org/ow2/frascati/examples/reconfig/converter/fscript/ExchangeRateUpdater.java

+/***
+ * OW2 FraSCAti Examples : Fscript reconfiguration
+ * Copyright (C) 2008-2010 INRIA, USTL
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Authors: Christophe Demarey
+ */
+package org.ow2.frascati.examples.reconfig.converter.fscript;
+
+import org.objectweb.fractal.fscript.FScriptException;
+
+/**
+ * This service allows to dynamically update the exchange rate of the currency
+ * converter component.
+ * 
+ * @author Christophe Demarey
+ */
+public interface ExchangeRateUpdater {
+    void updateExchangeRate(double newValue) throws FScriptException;
+}

examples/reconfig/src/main/java/org/ow2/frascati/examples/reconfig/converter/fscript/ExchangeRateUpdaterImpl.java

+/***
+ * OW2 FraSCAti Examples : Fscript reconfiguration
+ * Copyright (C) 2008-2010 INRIA, USTL
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Authors: Christophe Demarey
+ */
+package org.ow2.frascati.examples.reconfig.converter.fscript;
+
+import org.objectweb.fractal.fscript.FScriptException;
+import org.ow2.frascati.fscript.FraSCAtiScript;
+
+/**
+ * A SCA component used to dynamically reconfigure another SCA component: the
+ * currency converter.
+ * 
+ * The FScript plugin <b>MUST</b> be activated!
+ * 
+ * @author Christophe Demarey.
+ */
+public class ExchangeRateUpdaterImpl implements ExchangeRateUpdater {
+
+    public void updateExchangeRate(double newValue) throws FScriptException {
+        FraSCAtiScript fscript = FraSCAtiScript.getSingleton();
+        
+        fscript.execute("converter = $domain/scachild::reconfig/scachild::currency-converter;");
+        fscript.execute("rate = $converter/scaproperty::exchangeRate;");
+        fscript.execute("set-value($rate,"+newValue+")");
+    }
+
+}

examples/reconfig/src/main/resources/META-INF/FraSCAti-Explorer.xml

@@ -40,4 +40,10 @@
     </panel>
   </node> 
 
+  <node type-name="org.ow2.frascati.examples.reconfig.converter.fscript.ExchangeRateUpdater">
+    <panel>
+      <code>org.ow2.frascati.examples.reconfig.converter.explorer.UpdaterPanel</code>
+    </panel>
+  </node> 
+
 </explorer>

examples/reconfig/src/main/resources/reconfig.composite

@@ -34,4 +34,12 @@
     
     <property name="exchangeRate">0.75</property>
   </component>
+
+  <component name="exchange-rate-updater">
+    <implementation.java class="org.ow2.frascati.examples.reconfig.converter.fscript.ExchangeRateUpdaterImpl"/>
+    
+    <service name="exchangeRateUpdater">
+      <interface.java interface="org.ow2.frascati.examples.reconfig.converter.fscript.ExchangeRateUpdater"/>
+    </service>
+  </component>
 </composite>