Merge pull request #70 from eMoflon/extension-point-for-uri-configura…

…tion Extension point for uri configuration
eMoflon · Apr 9, 2018 · eb2e46b · eb2e46b
2 parents aee3a69 + 9a2ec9b
commit eb2e46b
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Showing 6 changed files with 331 additions and 174 deletions.
diff --git a/org.moflon.core.utilities/src/org/moflon/core/utilities/ExtensionsUtil.java b/org.moflon.core.utilities/src/org/moflon/core/utilities/ExtensionsUtil.java
@@ -0,0 +1,44 @@
+package org.moflon.core.utilities;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.apache.log4j.Logger;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.Platform;
+import org.moflon.core.utilities.LogUtils;
+
+public class ExtensionsUtil {
+	private static final Logger logger = Logger.getLogger(ExtensionsUtil.class);
+
+	/**
+	 * Collects all registered extensions with the given ID.
+	 * 
+	 * @param extensionID
+	 *            the ID of the extension
+	 * @param property
+	 *            the name of the property
+	 * @param extensionType
+	 *            the extension type
+	 * @return all extensions with the given ID as extensions of the given type
+	 */
+	public static <T> Collection<T> collectExtensions(final String extensionID, final String property,
+			final Class<T> extensionType) {
+		Collection<T> extensions = new ArrayList<T>();
+		IConfigurationElement[] config = Platform.getExtensionRegistry().getConfigurationElementsFor(extensionID);
+		try {
+			for (IConfigurationElement e : config) {
+				logger.debug("Evaluating extension");
+				final Object o = e.createExecutableExtension(property);
+				if (extensionType.isInstance(o)) {
+					extensions.add(extensionType.cast(o));
+				}
+			}
+		} catch (CoreException ex) {
+			LogUtils.error(logger, ex);
+		}
+
+		return extensions;
+	}
+}
diff --git a/org.moflon.emf.codegen/build.properties b/org.moflon.emf.codegen/build.properties
@@ -2,6 +2,11 @@ source.. = src/
 output.. = bin/
 bin.includes = META-INF/,\
                .,\
-               templates/,\
-               src/
-bin.excludes = templates/emf/
+               src/,\
+               plugin.xml,\
+               schema/,\
+               .project,\
+               .gitignore,\
+               .classpath,\
+               build.properties,\
+               templates/
diff --git a/org.moflon.emf.codegen/plugin.xml b/org.moflon.emf.codegen/plugin.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?eclipse version="3.4"?>
+<plugin>
+   <extension-point id="URIPreferenceExtension" name="URIPreferenceExtension" schema="schema/URIPreferenceExtension.exsd"/>
+
+</plugin>
diff --git a/org.moflon.emf.codegen/schema/URIPreferenceExtension.exsd b/org.moflon.emf.codegen/schema/URIPreferenceExtension.exsd
@@ -0,0 +1,102 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!-- Schema file written by PDE -->
+<schema targetNamespace="org.moflon.emf.codegen" xmlns="http://www.w3.org/2001/XMLSchema">
+<annotation>
+      <appinfo>
+         <meta.schema plugin="org.moflon.emf.codegen" id="URIPreferenceExtension" name="URIPreferenceExtension"/>
+      </appinfo>
+      <documentation>
+         This is a hook into the building process.  Use this to register extensions that are invoked during the compilation process and can specify a preferred platform URI (either resource or plugin) to be used for creating EPackages and GenModels.
+      </documentation>
+   </annotation>
+
+   <element name="extension">
+      <annotation>
+         <appinfo>
+            <meta.element />
+         </appinfo>
+      </annotation>
+      <complexType>
+         <choice>
+            <element ref="uri_preference_extension"/>
+         </choice>
+         <attribute name="point" type="string" use="required">
+            <annotation>
+               <documentation>
+
+               </documentation>
+            </annotation>
+         </attribute>
+         <attribute name="id" type="string">
+            <annotation>
+               <documentation>
+
+               </documentation>
+            </annotation>
+         </attribute>
+         <attribute name="name" type="string">
+            <annotation>
+               <documentation>
+
+               </documentation>
+               <appinfo>
+                  <meta.attribute translatable="true"/>
+               </appinfo>
+            </annotation>
+         </attribute>
+      </complexType>
+   </element>
+
+   <element name="uri_preference_extension">
+      <complexType>
+         <attribute name="class" type="string" use="required">
+            <annotation>
+               <documentation>
+
+               </documentation>
+               <appinfo>
+                  <meta.attribute kind="java" basedOn=":org.moflon.emf.codegen.URIPreferenceExtension"/>
+               </appinfo>
+            </annotation>
+         </attribute>
+      </complexType>
+   </element>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="since"/>
+      </appinfo>
+      <documentation>
+         [Enter the first release in which this extension point appears.]
+      </documentation>
+   </annotation>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="examples"/>
+      </appinfo>
+      <documentation>
+         [Enter extension point usage example here.]
+      </documentation>
+   </annotation>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="apiinfo"/>
+      </appinfo>
+      <documentation>
+         [Enter API information here.]
+      </documentation>
+   </annotation>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="implementation"/>
+      </appinfo>
+      <documentation>
+         [Enter information about supplied implementation of this extension point.]
+      </documentation>
+   </annotation>
+
+
+</schema>