svn commit: r1894987 - in /ctakes/trunk/ctakes-ne-contexts/src/main/java/org/apache/ctakes/necontexts/concurrent: ./ ThreadSafeContextAnnotator.java

[tm...@apache.org]

Author: tmill
Date: Fri Nov 12 23:35:17 2021
New Revision: 1894987

URL: http://svn.apache.org/viewvc?rev=1894987&view=rev
Log:
Add thread safe context annotator since i seem to be getting some concurrency-related errors.

Added:
    ctakes/trunk/ctakes-ne-contexts/src/main/java/org/apache/ctakes/necontexts/concurrent/
    ctakes/trunk/ctakes-ne-contexts/src/main/java/org/apache/ctakes/necontexts/concurrent/ThreadSafeContextAnnotator.java

Added: ctakes/trunk/ctakes-ne-contexts/src/main/java/org/apache/ctakes/necontexts/concurrent/ThreadSafeContextAnnotator.java
URL: http://svn.apache.org/viewvc/ctakes/trunk/ctakes-ne-contexts/src/main/java/org/apache/ctakes/necontexts/concurrent/ThreadSafeContextAnnotator.java?rev=1894987&view=auto
==============================================================================
--- ctakes/trunk/ctakes-ne-contexts/src/main/java/org/apache/ctakes/necontexts/concurrent/ThreadSafeContextAnnotator.java (added)
+++ ctakes/trunk/ctakes-ne-contexts/src/main/java/org/apache/ctakes/necontexts/concurrent/ThreadSafeContextAnnotator.java Fri Nov 12 23:35:17 2021
@@ -0,0 +1,108 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.ctakes.necontexts.concurrent;
+
+import org.apache.ctakes.core.concurrent.ThreadSafeWrapper;
+import org.apache.ctakes.core.pipeline.PipeBitInfo;
+import org.apache.ctakes.necontexts.ContextAnnotator;
+import org.apache.ctakes.typesystem.type.syntax.BaseToken;
+import org.apache.ctakes.typesystem.type.textspan.Sentence;
+import org.apache.log4j.Logger;
+import org.apache.uima.UimaContext;
+import org.apache.uima.analysis_engine.AnalysisEngineDescription;
+import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
+import org.apache.uima.fit.factory.AnalysisEngineFactory;
+import org.apache.uima.fit.factory.TypePrioritiesFactory;
+import org.apache.uima.fit.factory.TypeSystemDescriptionFactory;
+import org.apache.uima.jcas.JCas;
+import org.apache.uima.resource.ResourceInitializationException;
+
+@PipeBitInfo(
+        name = "Thread safe Context Annotator",
+        description = "Collects context for focus annotations for use by context consuming annotators.",
+        dependencies = { PipeBitInfo.TypeProduct.SENTENCE, PipeBitInfo.TypeProduct.BASE_TOKEN }
+)
+final public class ThreadSafeContextAnnotator extends ContextAnnotator {
+    static private final Logger LOGGER = Logger.getLogger( "ThreadSafeContextAnnotator" );
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void initialize( final UimaContext context ) throws ResourceInitializationException {
+        ContextSingleton.getInstance().initialize( context );
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void process( final JCas jCas ) throws AnalysisEngineProcessException {
+        ContextSingleton.getInstance().process( jCas );
+    }
+
+    /**
+     * @return a part of speech tagger using a default model
+     * @throws ResourceInitializationException -
+     */
+    public static AnalysisEngineDescription createAnnotatorDescription() throws ResourceInitializationException {
+        return AnalysisEngineFactory.createEngineDescription(
+                ThreadSafeContextAnnotator.class,
+                TypeSystemDescriptionFactory.createTypeSystemDescription(),
+                TypePrioritiesFactory.createTypePriorities( Sentence.class, BaseToken.class ) );
+    }
+
+    private enum ContextSingleton implements ThreadSafeWrapper<ContextAnnotator> {
+        INSTANCE;
+
+        static public ContextSingleton getInstance() {
+            return INSTANCE;
+        }
+
+        private final ContextAnnotator _delegate;
+        private boolean _initialized;
+
+        ContextSingleton() {
+            _delegate = new ContextAnnotator();
+        }
+
+        final private Object LOCK = new Object();
+
+        @Override
+        public Object getLock() {
+            return LOCK;
+        }
+
+        @Override
+        public ContextAnnotator getDelegate() {
+            return _delegate;
+        }
+
+        @Override
+        public boolean isInitialized() {
+            return _initialized;
+        }
+
+        @Override
+        public void setInitialized( final boolean initialized ) {
+            _initialized = initialized;
+        }
+    }
+
+}