LUCENE-4013: make oal.index.DocumentsWriter* classes package private

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1329419 13f79535-47bb-0310-9956-ffa450edef68

lucene/core/src/java/org/apache/lucene/index/DocumentsWriterFlushControl.java

@@ -40,7 +40,7 @@ import org.apache.lucene.util.ThreadInterruptedException;
  * {@link IndexWriterConfig#getRAMPerThreadHardLimitMB()} to prevent address
  * space exhaustion.
  */
-public final class DocumentsWriterFlushControl {
+final class DocumentsWriterFlushControl {
 
   private final long hardMaxBytesPerDWPT;
   private long activeBytes = 0;

lucene/core/src/java/org/apache/lucene/index/DocumentsWriterFlushQueue.java

@@ -27,7 +27,7 @@ import org.apache.lucene.index.DocumentsWriterPerThread.FlushedSegment;
 /**
  * @lucene.internal 
  */
-public class DocumentsWriterFlushQueue {
+class DocumentsWriterFlushQueue {
   private final Queue<FlushTicket> queue = new LinkedList<FlushTicket>();
   // we track tickets separately since count must be present even before the ticket is
   // constructed ie. queue.size would not reflect it.

lucene/core/src/java/org/apache/lucene/index/DocumentsWriterPerThread.java

@@ -37,7 +37,7 @@ import org.apache.lucene.util.InfoStream;
 import org.apache.lucene.util.RamUsageEstimator;
 import org.apache.lucene.util.MutableBits;
 
-public class DocumentsWriterPerThread {
+class DocumentsWriterPerThread {
 
   /**
    * The IndexingChain must define the {@link #getChain(DocumentsWriterPerThread)} method

lucene/core/src/java/org/apache/lucene/index/DocumentsWriterPerThreadPool.java

@@ -36,7 +36,7 @@ import org.apache.lucene.util.SetOnce;
  * new {@link DocumentsWriterPerThread} instance.
  * </p>
  */
-public abstract class DocumentsWriterPerThreadPool {
+abstract class DocumentsWriterPerThreadPool {
   
   /**
    * {@link ThreadState} references and guards a
@@ -50,7 +50,7 @@ public abstract class DocumentsWriterPerThreadPool {
    * before accessing the state.
    */
   @SuppressWarnings("serial")
-  public final static class ThreadState extends ReentrantLock {
+  final static class ThreadState extends ReentrantLock {
     DocumentsWriterPerThread dwpt;
     // TODO this should really be part of DocumentsWriterFlushControl
     // write access guarded by DocumentsWriterFlushControl
@@ -127,7 +127,7 @@ public abstract class DocumentsWriterPerThreadPool {
   /**
    * Creates a new {@link DocumentsWriterPerThreadPool} with a given maximum of {@link ThreadState}s.
    */
-  public DocumentsWriterPerThreadPool(int maxNumThreadStates) {
+  DocumentsWriterPerThreadPool(int maxNumThreadStates) {
     if (maxNumThreadStates < 1) {
       throw new IllegalArgumentException("maxNumThreadStates must be >= 1 but was: " + maxNumThreadStates);
     }
@@ -135,7 +135,7 @@ public abstract class DocumentsWriterPerThreadPool {
     numThreadStatesActive = 0;
   }
 
-  public void initialize(DocumentsWriter documentsWriter, FieldNumberBiMap globalFieldMap, IndexWriterConfig config) {
+  void initialize(DocumentsWriter documentsWriter, FieldNumberBiMap globalFieldMap, IndexWriterConfig config) {
     this.documentsWriter.set(documentsWriter); // thread pool is bound to DW
     this.globalFieldMap.set(globalFieldMap);
     for (int i = 0; i < threadStates.length; i++) {
@@ -148,14 +148,14 @@ public abstract class DocumentsWriterPerThreadPool {
    * Returns the max number of {@link ThreadState} instances available in this
    * {@link DocumentsWriterPerThreadPool}
    */
-  public int getMaxThreadStates() {
+  int getMaxThreadStates() {
     return threadStates.length;
   }
   
   /**
    * Returns the active number of {@link ThreadState} instances.
    */
-  public int getActiveThreadState() {
+  int getActiveThreadState() {
     return numThreadStatesActive;
   }
 
@@ -169,7 +169,7 @@ public abstract class DocumentsWriterPerThreadPool {
    * @return a new {@link ThreadState} iff any new state is available otherwise
    *         <code>null</code>
    */
-  public synchronized ThreadState newThreadState() {
+  synchronized ThreadState newThreadState() {
     if (numThreadStatesActive < threadStates.length) {
       final ThreadState threadState = threadStates[numThreadStatesActive];
       threadState.lock(); // lock so nobody else will get this ThreadState
@@ -211,7 +211,7 @@ public abstract class DocumentsWriterPerThreadPool {
   /**
    * Deactivate all unreleased threadstates 
    */
-  protected synchronized void deactivateUnreleasedStates() {
+  synchronized void deactivateUnreleasedStates() {
     for (int i = numThreadStatesActive; i < threadStates.length; i++) {
       final ThreadState threadState = threadStates[i];
       threadState.lock();
@@ -223,7 +223,7 @@ public abstract class DocumentsWriterPerThreadPool {
     }
   }
   
-  protected DocumentsWriterPerThread replaceForFlush(ThreadState threadState, boolean closed) {
+  DocumentsWriterPerThread replaceForFlush(ThreadState threadState, boolean closed) {
     assert threadState.isHeldByCurrentThread();
     assert globalFieldMap.get() != null;
     final DocumentsWriterPerThread dwpt = threadState.dwpt;
@@ -238,7 +238,7 @@ public abstract class DocumentsWriterPerThreadPool {
     return dwpt;
   }
   
-  public void recycle(DocumentsWriterPerThread dwpt) {
+  void recycle(DocumentsWriterPerThread dwpt) {
     // don't recycle DWPT by default
   }
   
@@ -266,7 +266,7 @@ public abstract class DocumentsWriterPerThreadPool {
    * waiting to acquire its lock or <code>null</code> if no {@link ThreadState}
    * is yet visible to the calling thread.
    */
-  protected ThreadState minContendedThreadState() {
+  ThreadState minContendedThreadState() {
     ThreadState minThreadState = null;
     final int limit = numThreadStatesActive;
     for (int i = 0; i < limit; i++) {

lucene/core/src/java/org/apache/lucene/index/FlushByRamOrCountsPolicy.java

@@ -47,7 +47,7 @@ import org.apache.lucene.index.DocumentsWriterPerThreadPool.ThreadState;
  * pending iff the global active RAM consumption is >= the configured max RAM
  * buffer.
  */
-public class FlushByRamOrCountsPolicy extends FlushPolicy {
+class FlushByRamOrCountsPolicy extends FlushPolicy {
 
   @Override
   public void onDelete(DocumentsWriterFlushControl control, ThreadState state) {

lucene/core/src/java/org/apache/lucene/index/FlushPolicy.java

@@ -50,7 +50,7 @@ import org.apache.lucene.util.SetOnce;
  * @see DocumentsWriterPerThread
  * @see IndexWriterConfig#setFlushPolicy(FlushPolicy)
  */
-public abstract class FlushPolicy {
+abstract class FlushPolicy {
   protected final SetOnce<DocumentsWriter> writer = new SetOnce<DocumentsWriter>();
   protected IndexWriterConfig indexWriterConfig;
 

lucene/core/src/java/org/apache/lucene/index/IndexWriterConfig.java

@@ -571,8 +571,8 @@ public final class IndexWriterConfig implements Cloneable {
    * </p>
    * <p>
    * NOTE: This only takes effect when IndexWriter is first created.</p>*/
-  public IndexWriterConfig setIndexerThreadPool(DocumentsWriterPerThreadPool threadPool) {
-    if(threadPool == null) {
+  IndexWriterConfig setIndexerThreadPool(DocumentsWriterPerThreadPool threadPool) {
+    if (threadPool == null) {
       throw new IllegalArgumentException("DocumentsWriterPerThreadPool must not be nul");
     }
     this.indexerThreadPool = threadPool;
@@ -582,10 +582,32 @@ public final class IndexWriterConfig implements Cloneable {
   /** Returns the configured {@link DocumentsWriterPerThreadPool} instance.
    * @see #setIndexerThreadPool(DocumentsWriterPerThreadPool)
    * @return the configured {@link DocumentsWriterPerThreadPool} instance.*/
-  public DocumentsWriterPerThreadPool getIndexerThreadPool() {
+  DocumentsWriterPerThreadPool getIndexerThreadPool() {
     return this.indexerThreadPool;
   }
 
+  /**
+   * Sets the max number of simultaneous threads that may be indexing documents
+   * at once in IndexWriter. Values &lt; 1 are invalid and if passed
+   * <code>maxThreadStates</code> will be set to
+   * {@link #DEFAULT_MAX_THREAD_STATES}.
+   *
+   * <p>Only takes effect when IndexWriter is first created. */
+  public IndexWriterConfig setMaxThreadStates(int maxThreadStates) {
+    this.indexerThreadPool = new ThreadAffinityDocumentsWriterThreadPool(maxThreadStates);
+    return this;
+  }
+
+  /** Returns the max number of simultaneous threads that
+   *  may be indexing documents at once in IndexWriter. */
+  public int getMaxThreadStates() {
+    try {
+      return ((ThreadAffinityDocumentsWriterThreadPool) indexerThreadPool).getMaxThreadStates();
+    } catch (ClassCastException cce) {
+      throw new IllegalStateException(cce);
+    }
+  }
+
   /** By default, IndexWriter does not pool the
    *  SegmentReaders it must open for deletions and
    *  merging, unless a near-real-time reader has been

lucene/core/src/java/org/apache/lucene/index/ThreadAffinityDocumentsWriterThreadPool.java

@@ -30,7 +30,7 @@ import org.apache.lucene.index.DocumentsWriterPerThreadPool.ThreadState; //javad
  * {@link ThreadAffinityDocumentsWriterThreadPool} tries to find the currently
  * minimal contended {@link ThreadState}.
  */
-public class ThreadAffinityDocumentsWriterThreadPool extends DocumentsWriterPerThreadPool {
+class ThreadAffinityDocumentsWriterThreadPool extends DocumentsWriterPerThreadPool {
   private Map<Thread, ThreadState> threadBindings = new ConcurrentHashMap<Thread, ThreadState>();
   
   /**

lucene/test-framework/src/java/org/apache/lucene/index/RandomDocumentsWriterPerThreadPool.java

@@ -20,7 +20,7 @@ import java.util.Random;
 
 /**
  * 
- * A {@link DocumentsWriterPerThreadPool} that selects thread states at random.
+ * A <code>DocumentsWriterPerThreadPool<code> that selects thread states at random.
  * 
  * @lucene.internal
  * @lucene.experimental

lucene/test-framework/src/java/org/apache/lucene/util/LuceneTestCase.java

@@ -26,6 +26,7 @@ import java.lang.annotation.Inherited;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
+import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -35,8 +36,8 @@ import java.util.IdentityHashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Locale;
-import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Map;
 import java.util.Random;
 import java.util.Set;
 import java.util.TimeZone;
@@ -53,11 +54,11 @@ import org.apache.lucene.document.Field;
 import org.apache.lucene.document.FieldType;
 import org.apache.lucene.index.AtomicReader;
 import org.apache.lucene.index.CompositeReader;
+import org.apache.lucene.index.DirectoryReader;
 import org.apache.lucene.index.FieldFilterAtomicReader;
 import org.apache.lucene.index.FieldInfo;
-import org.apache.lucene.index.DirectoryReader;
-import org.apache.lucene.index.IndexReader;
 import org.apache.lucene.index.IndexReader.ReaderClosedListener;
+import org.apache.lucene.index.IndexReader;
 import org.apache.lucene.index.IndexWriterConfig;
 import org.apache.lucene.index.LogByteSizeMergePolicy;
 import org.apache.lucene.index.LogDocMergePolicy;
@@ -70,25 +71,24 @@ import org.apache.lucene.index.RandomDocumentsWriterPerThreadPool;
 import org.apache.lucene.index.SegmentReader;
 import org.apache.lucene.index.SerialMergeScheduler;
 import org.apache.lucene.index.SlowCompositeReaderWrapper;
-import org.apache.lucene.index.ThreadAffinityDocumentsWriterThreadPool;
 import org.apache.lucene.index.TieredMergePolicy;
 import org.apache.lucene.search.AssertingIndexSearcher;
 import org.apache.lucene.search.BooleanQuery;
-import org.apache.lucene.search.FieldCache;
 import org.apache.lucene.search.FieldCache.CacheEntry;
+import org.apache.lucene.search.FieldCache;
 import org.apache.lucene.search.IndexSearcher;
+import org.apache.lucene.search.QueryUtils.FCInvisibleMultiReader;
 import org.apache.lucene.search.RandomSimilarityProvider;
 import org.apache.lucene.search.similarities.DefaultSimilarity;
 import org.apache.lucene.search.similarities.Similarity;
-import org.apache.lucene.search.QueryUtils.FCInvisibleMultiReader;
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.store.FSDirectory;
 import org.apache.lucene.store.FlushInfo;
 import org.apache.lucene.store.IOContext;
 import org.apache.lucene.store.LockFactory;
 import org.apache.lucene.store.MergeInfo;
-import org.apache.lucene.store.MockDirectoryWrapper;
 import org.apache.lucene.store.MockDirectoryWrapper.Throttling;
+import org.apache.lucene.store.MockDirectoryWrapper;
 import org.apache.lucene.store.NRTCachingDirectory;
 import org.apache.lucene.util.FieldCacheSanityChecker.Insanity;
 import org.junit.After;
@@ -108,7 +108,6 @@ import org.junit.runner.Runner;
 import org.junit.runner.notification.RunListener;
 import org.junit.runners.model.MultipleFailureException;
 import org.junit.runners.model.Statement;
-
 import com.carrotsearch.randomizedtesting.JUnit4MethodProvider;
 import com.carrotsearch.randomizedtesting.MixWithSuiteName;
 import com.carrotsearch.randomizedtesting.RandomizedContext;
@@ -1068,12 +1067,37 @@ public abstract class LuceneTestCase extends Assert {
     if (r.nextBoolean()) {
       int maxNumThreadStates = rarely(r) ? _TestUtil.nextInt(r, 5, 20) // crazy value
           : _TestUtil.nextInt(r, 1, 4); // reasonable value
-      if (rarely(r)) {
-        // random thread pool
-        c.setIndexerThreadPool(new RandomDocumentsWriterPerThreadPool(maxNumThreadStates, r));
-      } else {
-        // random thread pool
-        c.setIndexerThreadPool(new ThreadAffinityDocumentsWriterThreadPool(maxNumThreadStates));
+
+      Method setIndexerThreadPoolMethod = null;
+      try {
+        // Retrieve the package-private setIndexerThreadPool
+        // method:
+        for(Method m : IndexWriterConfig.class.getDeclaredMethods()) {
+          if (m.getName().equals("setIndexerThreadPool")) {
+            m.setAccessible(true);
+            setIndexerThreadPoolMethod = m;
+            break;
+          }
+        }
+      } catch (Exception e) {
+        // Should not happen?
+        throw new RuntimeException(e);
+      }
+
+      if (setIndexerThreadPoolMethod == null) {
+        throw new RuntimeException("failed to lookup IndexWriterConfig.setIndexerThreadPool method");
+      }
+
+      try {
+        if (rarely(r)) {
+          // random thread pool
+          setIndexerThreadPoolMethod.invoke(c, new RandomDocumentsWriterPerThreadPool(maxNumThreadStates, r));
+        } else {
+          // random thread pool
+          c.setMaxThreadStates(maxNumThreadStates);
+        }
+      } catch (Exception e) {
+        throw new RuntimeException(e);
       }
     }