Added the Python plugin environment [comixed#26]

 * Python sources are packaged in the JAR file.

comixed-plugins/pom.xml

@@ -30,4 +30,30 @@
       <artifactId>mysql-connector-java</artifactId>
     </dependency>
   </dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>build-helper-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>add-sources</id>
+            <phase>generate-resources</phase>
+            <goals>
+              <goal>add-resource</goal>
+            </goals>
+            <configuration>
+              <resources>
+                <resource>
+                  <directory>src/main/python</directory>
+                  <targetPath>python</targetPath>
+                  <includes>**/*.py</includes>
+                </resource>
+              </resources>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
 </project>

comixed-plugins/src/main/java/org/comixed/plugins/interpreters/PythonPluginInterpreter.java

@@ -0,0 +1,71 @@
+/*
+ * ComiXed - A digital comic book library management application.
+ * Copyright (C) 2020, The ComiXed Project
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses>
+ */
+
+package org.comixed.plugins.interpreters;
+
+import lombok.extern.log4j.Log4j2;
+import org.comixed.plugins.PluginException;
+import org.comixed.plugins.model.Plugin;
+import org.comixed.service.comic.ComicService;
+import org.comixed.service.comic.PageService;
+import org.python.util.PythonInterpreter;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.config.ConfigurableBeanFactory;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+/**
+ * <code>PythonPluginInterpreter</code> defines a type of {@link PluginInterpreter} that executes
+ * Python code.
+ *
+ * @author Darryl L. Pierce
+ */
+@Component
+@Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE)
+@Log4j2
+public class PythonPluginInterpreter extends AbstractPluginInterpreter {
+  @Autowired private ComicService comicService;
+  @Autowired private PageService pageService;
+
+  private PythonInterpreter interpreter;
+
+  @Override
+  public void initialize() throws PluginException {
+    super.initialize();
+
+    log.debug("Initializing Python runtime environment");
+    this.interpreter = new PythonInterpreter();
+
+    this.loadRuntimeObjects();
+  }
+
+  private void loadRuntimeObjects() {
+    log.debug("Loading ComiXed Python runtime objects");
+    this.interpreter.set("comicService", this.comicService);
+    this.interpreter.set("pageService", this.pageService);
+    this.interpreter.set("logger", this.log);
+  }
+
+  @Override
+  public void start(Plugin plugin) throws PluginException {}
+
+  @Override
+  public void finish() throws PluginException {
+    super.finish();
+  }
+}

comixed-plugins/src/main/python/comixed/__init__.py

@@ -0,0 +1,18 @@
+# ComiXed - A digital comic book library management application.
+# Copyright (C) 2020, The ComiXed Project
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses>
+
+import org.comixed.service.comic.ComicService as ComicService
+

comixed-plugins/src/main/resources/plugin-languages.properties

@@ -2,3 +2,5 @@
 # * language: the name of the language
 # * interpreter: the name of the Java bean
 
+plugin.language.runtime[0].language=python
+plugin.language.runtime[0].bean=pythonPluginInterpreter