Cache injector provider

#159

plugins/org.yakindu.sct.domain/src/org/yakindu/sct/domain/extension/DomainRegistry.java

@@ -1,140 +1,145 @@
-/**
- * Copyright (c) 2015 committers of YAKINDU and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- * Contributors:
- * 	committers of YAKINDU - initial API and implementation
- * 
- */
-package org.yakindu.sct.domain.extension;
-
-import java.net.URL;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.NoSuchElementException;
-
-import org.eclipse.core.runtime.Assert;
-import org.eclipse.core.runtime.CoreException;
-import org.eclipse.core.runtime.IConfigurationElement;
-import org.eclipse.core.runtime.Platform;
-import org.eclipse.emf.ecore.EObject;
-import org.eclipse.emf.ecore.util.EcoreUtil;
-import org.eclipse.jface.resource.ImageDescriptor;
-import org.eclipse.swt.graphics.Image;
-import org.osgi.framework.Bundle;
-import org.yakindu.sct.model.sgraph.SGraphPackage;
-import org.yakindu.sct.model.sgraph.Statechart;
-
-import com.google.common.base.Predicate;
-import com.google.common.collect.Iterables;
-
-/**
- * @author andreas muelder - Initial contribution and API
- * 
- */
-public class DomainRegistry {
-
-	private static final String EXTENSION_POINT = "org.yakindu.sct.domain";
-	private static final String DOMAIN_ID = "domainID";
-	private static final String DESCRIPTION = "description";
-	private static final String IMAGE = "image";
-	private static final String NAME = "name";
-	private static final String MODULE_PROVIDER = "domainModuleProvider";
-
-	private DomainRegistry() {
-	}
-
-	private static List<DomainDescriptor> descriptors = null;
-
-	public static final class DomainDescriptor {
-
-		private final IConfigurationElement configElement;
-
-		private Image image;
-
-		DomainDescriptor(IConfigurationElement configElement) {
-			this.configElement = configElement;
-		}
-
-		public String getDomainID() {
-			return configElement.getAttribute(DOMAIN_ID);
-		}
-
-		public String getName() {
-			return configElement.getAttribute(NAME);
-		}
-
-		public String getDescription() {
-			return configElement.getAttribute(DESCRIPTION);
-		}
-
-		public IDomainInjectorProvider getDomainInjectorProvider() {
-			try {
-				return (IDomainInjectorProvider) configElement.createExecutableExtension(MODULE_PROVIDER);
-			} catch (CoreException e) {
-				e.printStackTrace();
-			}
-			return null;
-		}
-
-		public Image getImage() {
-			if (image != null)
-				return image;
-			String path = configElement.getAttribute(IMAGE);
-			if (path == null)
-				return null;
-
-			Bundle extensionBundle = Platform.getBundle(configElement.getContributor().getName());
-			URL entry = extensionBundle.getEntry(path);
-			ImageDescriptor descriptor = ImageDescriptor.createFromURL(entry);
-			image = descriptor.createImage();
-			return image;
-		}
-
-		public IConfigurationElement getConfigElement() {
-			return configElement;
-		}
-
-		public void setImage(Image image) {
-			this.image = image;
-		}
-	}
-
-	public static List<DomainDescriptor> getDomainDescriptors() {
-		if (descriptors == null) {
-			descriptors = new ArrayList<DomainDescriptor>();
-			IConfigurationElement[] configurationElements = Platform.getExtensionRegistry()
-					.getConfigurationElementsFor(EXTENSION_POINT);
-			for (IConfigurationElement iConfigurationElement : configurationElements) {
-				descriptors.add(new DomainDescriptor(iConfigurationElement));
-			}
-		}
-		return descriptors;
-	}
-
-	public static DomainDescriptor getDomainDescriptor(final String id) {
-		final String defaultDomainID = SGraphPackage.Literals.STATECHART__DOMAIN_ID.getDefaultValueLiteral();
-		try {
-			return Iterables.find(getDomainDescriptors(), new Predicate<DomainDescriptor>() {
-				@Override
-				public boolean apply(DomainDescriptor input) {
-					return input.getDomainID().equals(id != null ? id : defaultDomainID);
-				}
-			});
-		} catch (NoSuchElementException e) {
-			if(defaultDomainID.equals(id)){
-				throw new IllegalArgumentException("No default domain found!");
-			}
-			System.err.println("Could not find domain descriptor for id " + id + " - > using default domain");
-			return getDomainDescriptor(defaultDomainID);
-		}
-	}
-
-	public static DomainDescriptor getDomainDescriptor(EObject object) {
-		EObject rootContainer = EcoreUtil.getRootContainer(object);
-		Assert.isTrue(rootContainer instanceof Statechart);
-		return getDomainDescriptor(((Statechart) rootContainer).getDomainID());
-	}
-}
+/**
+ * Copyright (c) 2015 committers of YAKINDU and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * Contributors:
+ * 	committers of YAKINDU - initial API and implementation
+ * 
+ */
+package org.yakindu.sct.domain.extension;
+
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.NoSuchElementException;
+
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.ecore.util.EcoreUtil;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.swt.graphics.Image;
+import org.osgi.framework.Bundle;
+import org.yakindu.sct.model.sgraph.SGraphPackage;
+import org.yakindu.sct.model.sgraph.Statechart;
+
+import com.google.common.base.Predicate;
+import com.google.common.collect.Iterables;
+
+/**
+ * @author andreas muelder - Initial contribution and API
+ * 
+ */
+public class DomainRegistry {
+
+	private static final String EXTENSION_POINT = "org.yakindu.sct.domain";
+	private static final String DOMAIN_ID = "domainID";
+	private static final String DESCRIPTION = "description";
+	private static final String IMAGE = "image";
+	private static final String NAME = "name";
+	private static final String MODULE_PROVIDER = "domainModuleProvider";
+
+	private DomainRegistry() {
+	}
+
+	private static List<DomainDescriptor> descriptors = null;
+
+	public static final class DomainDescriptor {
+
+		private final IConfigurationElement configElement;
+
+		private Image image;
+
+		private IDomainInjectorProvider injectorProvider;
+
+		DomainDescriptor(IConfigurationElement configElement) {
+			this.configElement = configElement;
+		}
+
+		public String getDomainID() {
+			return configElement.getAttribute(DOMAIN_ID);
+		}
+
+		public String getName() {
+			return configElement.getAttribute(NAME);
+		}
+
+		public String getDescription() {
+			return configElement.getAttribute(DESCRIPTION);
+		}
+
+		public IDomainInjectorProvider getDomainInjectorProvider() {
+			if (injectorProvider == null) {
+				try {
+					injectorProvider = (IDomainInjectorProvider) configElement
+							.createExecutableExtension(MODULE_PROVIDER);
+				} catch (CoreException e) {
+					e.printStackTrace();
+				}
+			}
+			return injectorProvider;
+		}
+
+		public Image getImage() {
+			if (image != null)
+				return image;
+			String path = configElement.getAttribute(IMAGE);
+			if (path == null)
+				return null;
+
+			Bundle extensionBundle = Platform.getBundle(configElement.getContributor().getName());
+			URL entry = extensionBundle.getEntry(path);
+			ImageDescriptor descriptor = ImageDescriptor.createFromURL(entry);
+			image = descriptor.createImage();
+			return image;
+		}
+
+		public IConfigurationElement getConfigElement() {
+			return configElement;
+		}
+
+		public void setImage(Image image) {
+			this.image = image;
+		}
+	}
+
+	public static List<DomainDescriptor> getDomainDescriptors() {
+		if (descriptors == null) {
+			descriptors = new ArrayList<DomainDescriptor>();
+			IConfigurationElement[] configurationElements = Platform.getExtensionRegistry()
+					.getConfigurationElementsFor(EXTENSION_POINT);
+			for (IConfigurationElement iConfigurationElement : configurationElements) {
+				descriptors.add(new DomainDescriptor(iConfigurationElement));
+			}
+		}
+		return descriptors;
+	}
+
+	public static DomainDescriptor getDomainDescriptor(final String id) {
+		final String defaultDomainID = SGraphPackage.Literals.STATECHART__DOMAIN_ID.getDefaultValueLiteral();
+		try {
+			return Iterables.find(getDomainDescriptors(), new Predicate<DomainDescriptor>() {
+				@Override
+				public boolean apply(DomainDescriptor input) {
+					return input.getDomainID().equals(id != null ? id : defaultDomainID);
+				}
+			});
+		} catch (NoSuchElementException e) {
+			if (defaultDomainID.equals(id)) {
+				throw new IllegalArgumentException("No default domain found!");
+			}
+			System.err.println("Could not find domain descriptor for id " + id + " - > using default domain");
+			return getDomainDescriptor(defaultDomainID);
+		}
+	}
+
+	public static DomainDescriptor getDomainDescriptor(EObject object) {
+		EObject rootContainer = EcoreUtil.getRootContainer(object);
+		Assert.isTrue(rootContainer instanceof Statechart);
+		return getDomainDescriptor(((Statechart) rootContainer).getDomainID());
+	}
+}