Merge branch 'features/python-support'

# Conflicts:
#	Plugin-Manager/src/main/java/org/ohnlp/backbone/pluginmanager/PluginManager.java

Author: qqndrew

API/pom.xml

@@ -31,12 +31,43 @@
     <parent>
         <groupId>org.ohnlp.backbone</groupId>
         <artifactId>backbone-parent</artifactId>
-        <version>3.0.7</version>
+        <version>3.0.8</version>
     </parent>
 
     <artifactId>api</artifactId>
 
     <description>
         Application Programming Interface for OHNLP Backbone Components
     </description>
+
+    <dependencies>
+        <dependency>
+            <groupId>net.sf.py4j</groupId>
+            <artifactId>py4j</artifactId>
+            <version>0.10.9.7</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-exec</artifactId>
+            <version>1.3</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>commons-codec</groupId>
+            <artifactId>commons-codec</artifactId>
+            <version>1.15</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.codehaus.plexus</groupId>
+            <artifactId>plexus-archiver</artifactId>
+            <version>4.7.1</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-joda</artifactId>
+            <version>2.13.0</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
 </project>

API/src/main/java/org/ohnlp/backbone/api/BackbonePipelineComponent.java

@@ -31,4 +31,6 @@ public abstract class BackbonePipelineComponent<I extends PInput, O extends POut
      * @throws ValidationError if a validation error occurs.
      */
     public abstract void validate() throws ValidationError;
+
+    public void teardown() {}
 }

API/src/main/java/org/ohnlp/backbone/api/ComponentLang.java

@@ -0,0 +1,6 @@
+package org.ohnlp.backbone.api;
+
+public enum ComponentLang {
+    JAVA,
+    PYTHON
+}

API/src/main/java/org/ohnlp/backbone/api/components/XLangComponent.java

@@ -0,0 +1,14 @@
+package org.ohnlp.backbone.api.components;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.ohnlp.backbone.api.BackbonePipelineComponent;
+
+/**
+ * Defines that this component is a cross-language component
+ * <br/>
+ * This interface is used as cross-language components do not support injection of configuration values, meaning that
+ * external injection of the config JSON is necessary before {@link BackbonePipelineComponent#init()} is called
+ */
+public interface XLangComponent {
+    void injectConfig(JsonNode config);
+}

API/src/main/java/org/ohnlp/backbone/api/components/xlang/python/PythonBackbonePipelineComponent.java

@@ -0,0 +1,32 @@
+package org.ohnlp.backbone.api.components.xlang.python;
+
+import java.util.List;
+import java.util.Map;
+
+public interface PythonBackbonePipelineComponent extends PythonStructureProxy {
+    /**
+     * Initialize the component with config json
+     */
+    void init(String json);
+
+    /**
+     * @return A String-based JSON config to pass to the DoFn on init
+     */
+    String to_do_fn_config();
+
+    /**
+     * @return A Tag describing the expected input
+     */
+    String get_input_tag();
+
+    /**
+     * @return A list of one or more labels/tags for expected outputs
+     */
+    List<String> proxied_get_output_tags();
+
+    /**
+     * @param input_schemas The schemas being input
+     * @return A derived output schema from the supplied input schema
+     */
+    Map<String, PythonSchema> proxied_calculate_output_schema(Map<String, PythonSchema> input_schemas);
+}