LUCENE-5196: add LuceneTestCase.OLD_FORMAT_IMPERSONATION_IS_ACTIVE

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1519258 13f79535-47bb-0310-9956-ffa450edef68

lucene/core/src/test/org/apache/lucene/index/TestCodecs.java

@@ -30,10 +30,14 @@ import org.apache.lucene.codecs.FieldsProducer;
 import org.apache.lucene.codecs.PostingsConsumer;
 import org.apache.lucene.codecs.TermStats;
 import org.apache.lucene.codecs.TermsConsumer;
+import org.apache.lucene.codecs.lucene40.Lucene40RWCodec;
+import org.apache.lucene.codecs.lucene41.Lucene41RWCodec;
+import org.apache.lucene.codecs.lucene42.Lucene42RWCodec;
 import org.apache.lucene.codecs.mocksep.MockSepPostingsFormat;
 import org.apache.lucene.document.Document;
 import org.apache.lucene.document.Field.Store;
 import org.apache.lucene.document.FieldType;
+import org.apache.lucene.document.NumericDocValuesField;
 import org.apache.lucene.document.StringField;
 import org.apache.lucene.document.TextField;
 import org.apache.lucene.index.FieldInfo.DocValuesType;
@@ -695,4 +699,30 @@ public class TestCodecs extends LuceneTestCase {
     
     dir.close();
   }
+  
+  public void testDisableImpersonation() throws Exception {
+    Codec[] oldCodecs = new Codec[] { new Lucene40RWCodec(), new Lucene41RWCodec(), new Lucene42RWCodec() };
+    Directory dir = newDirectory();
+    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
+    conf.setCodec(oldCodecs[random().nextInt(oldCodecs.length)]);
+    IndexWriter writer = new IndexWriter(dir, conf);
+    
+    Document doc = new Document();
+    doc.add(new StringField("f", "bar", Store.YES));
+    doc.add(new NumericDocValuesField("n", 18L));
+    writer.addDocument(doc);
+    
+    OLD_FORMAT_IMPERSONATION_IS_ACTIVE = false;
+    try {
+      writer.close();
+      fail("should not have succeeded to impersonate an old format!");
+    } catch (UnsupportedOperationException e) {
+      writer.rollback();
+    } finally {
+      OLD_FORMAT_IMPERSONATION_IS_ACTIVE = true;
+    }
+    
+    dir.close();
+  }
+  
 }

lucene/test-framework/src/java/org/apache/lucene/codecs/lucene40/Lucene40RWCodec.java

@@ -6,6 +6,7 @@ import org.apache.lucene.codecs.DocValuesFormat;
 import org.apache.lucene.codecs.FieldInfosFormat;
 import org.apache.lucene.codecs.FieldInfosWriter;
 import org.apache.lucene.codecs.NormsFormat;
+import org.apache.lucene.util.LuceneTestCase;
 
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
@@ -25,11 +26,17 @@ import org.apache.lucene.codecs.NormsFormat;
  */
 
 /** Read-write version of Lucene40Codec for testing */
+@SuppressWarnings("deprecation")
 public final class Lucene40RWCodec extends Lucene40Codec {
+  
   private final FieldInfosFormat fieldInfos = new Lucene40FieldInfosFormat() {
     @Override
     public FieldInfosWriter getFieldInfosWriter() throws IOException {
-      return new Lucene40FieldInfosWriter();
+      if (!LuceneTestCase.OLD_FORMAT_IMPERSONATION_IS_ACTIVE) {
+        return super.getFieldInfosWriter();
+      } else {
+        return new Lucene40FieldInfosWriter();
+      }
     }
   };
   

lucene/test-framework/src/java/org/apache/lucene/codecs/lucene40/Lucene40RWDocValuesFormat.java

@@ -22,15 +22,21 @@ import java.io.IOException;
 import org.apache.lucene.codecs.DocValuesConsumer;
 import org.apache.lucene.index.IndexFileNames;
 import org.apache.lucene.index.SegmentWriteState;
+import org.apache.lucene.util.LuceneTestCase;
 
 /** Read-write version of {@link Lucene40DocValuesFormat} for testing */
+@SuppressWarnings("deprecation")
 public class Lucene40RWDocValuesFormat extends Lucene40DocValuesFormat {
 
   @Override
   public DocValuesConsumer fieldsConsumer(SegmentWriteState state) throws IOException {
-    String filename = IndexFileNames.segmentFileName(state.segmentInfo.name, 
+    if (!LuceneTestCase.OLD_FORMAT_IMPERSONATION_IS_ACTIVE) {
-                                                     "dv", 
+      return super.fieldsConsumer(state);
-                                                     IndexFileNames.COMPOUND_FILE_EXTENSION);
+    } else {
-    return new Lucene40DocValuesWriter(state, filename, Lucene40FieldInfosReader.LEGACY_DV_TYPE_KEY);
+      String filename = IndexFileNames.segmentFileName(state.segmentInfo.name, 
+          "dv", 
+          IndexFileNames.COMPOUND_FILE_EXTENSION);
+      return new Lucene40DocValuesWriter(state, filename, Lucene40FieldInfosReader.LEGACY_DV_TYPE_KEY);
+    }
   }
 }

lucene/test-framework/src/java/org/apache/lucene/codecs/lucene40/Lucene40RWNormsFormat.java

@@ -22,15 +22,21 @@ import java.io.IOException;
 import org.apache.lucene.codecs.DocValuesConsumer;
 import org.apache.lucene.index.IndexFileNames;
 import org.apache.lucene.index.SegmentWriteState;
+import org.apache.lucene.util.LuceneTestCase;
 
 /** Read-write version of {@link Lucene40NormsFormat} for testing */
+@SuppressWarnings("deprecation")
 public class Lucene40RWNormsFormat extends Lucene40NormsFormat {
 
   @Override
   public DocValuesConsumer normsConsumer(SegmentWriteState state) throws IOException {
-    String filename = IndexFileNames.segmentFileName(state.segmentInfo.name, 
+    if (!LuceneTestCase.OLD_FORMAT_IMPERSONATION_IS_ACTIVE) {
-                                                     "nrm", 
+      return super.normsConsumer(state);
-                                                     IndexFileNames.COMPOUND_FILE_EXTENSION);
+    } else {
-    return new Lucene40DocValuesWriter(state, filename, Lucene40FieldInfosReader.LEGACY_NORM_TYPE_KEY);
+      String filename = IndexFileNames.segmentFileName(state.segmentInfo.name, 
+          "nrm", 
+          IndexFileNames.COMPOUND_FILE_EXTENSION);
+      return new Lucene40DocValuesWriter(state, filename, Lucene40FieldInfosReader.LEGACY_NORM_TYPE_KEY);
+    }
   }
 }

lucene/test-framework/src/java/org/apache/lucene/codecs/lucene40/Lucene40RWPostingsFormat.java

@@ -6,6 +6,7 @@ import org.apache.lucene.codecs.BlockTreeTermsWriter;
 import org.apache.lucene.codecs.FieldsConsumer;
 import org.apache.lucene.codecs.PostingsWriterBase;
 import org.apache.lucene.index.SegmentWriteState;
+import org.apache.lucene.util.LuceneTestCase;
 
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
@@ -27,23 +28,29 @@ import org.apache.lucene.index.SegmentWriteState;
 /**
  * Read-write version of {@link Lucene40PostingsFormat} for testing.
  */
+@SuppressWarnings("deprecation")
 public class Lucene40RWPostingsFormat extends Lucene40PostingsFormat {
+  
   @Override
   public FieldsConsumer fieldsConsumer(SegmentWriteState state) throws IOException {
-    PostingsWriterBase docs = new Lucene40PostingsWriter(state);
+    if (!LuceneTestCase.OLD_FORMAT_IMPERSONATION_IS_ACTIVE) {
+      return super.fieldsConsumer(state);
+    } else {
+      PostingsWriterBase docs = new Lucene40PostingsWriter(state);
       
-    // TODO: should we make the terms index more easily
+      // TODO: should we make the terms index more easily
-    // pluggable?  Ie so that this codec would record which
+      // pluggable?  Ie so that this codec would record which
-    // index impl was used, and switch on loading?
+      // index impl was used, and switch on loading?
-    // Or... you must make a new Codec for this?
+      // Or... you must make a new Codec for this?
-    boolean success = false;
+      boolean success = false;
-    try {
+      try {
-      FieldsConsumer ret = new BlockTreeTermsWriter(state, docs, minBlockSize, maxBlockSize);
+        FieldsConsumer ret = new BlockTreeTermsWriter(state, docs, minBlockSize, maxBlockSize);
-      success = true;
+        success = true;
-      return ret;
+        return ret;
-    } finally {
+      } finally {
-      if (!success) {
+        if (!success) {
-        docs.close();
+          docs.close();
+        }
       }
     }
   }

lucene/test-framework/src/java/org/apache/lucene/codecs/lucene41/Lucene41RWCodec.java

@@ -11,6 +11,7 @@ import org.apache.lucene.codecs.lucene40.Lucene40FieldInfosFormat;
 import org.apache.lucene.codecs.lucene40.Lucene40FieldInfosWriter;
 import org.apache.lucene.codecs.lucene40.Lucene40RWDocValuesFormat;
 import org.apache.lucene.codecs.lucene40.Lucene40RWNormsFormat;
+import org.apache.lucene.util.LuceneTestCase;
 
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
@@ -32,12 +33,17 @@ import org.apache.lucene.codecs.lucene40.Lucene40RWNormsFormat;
 /**
  * Read-write version of {@link Lucene41Codec} for testing.
  */
+@SuppressWarnings("deprecation")
 public class Lucene41RWCodec extends Lucene41Codec {
   private final StoredFieldsFormat fieldsFormat = new Lucene41StoredFieldsFormat();
   private final FieldInfosFormat fieldInfos = new Lucene40FieldInfosFormat() {
     @Override
     public FieldInfosWriter getFieldInfosWriter() throws IOException {
-      return new Lucene40FieldInfosWriter();
+      if (!LuceneTestCase.OLD_FORMAT_IMPERSONATION_IS_ACTIVE) {
+        return super.getFieldInfosWriter();
+      } else {
+        return new Lucene40FieldInfosWriter();
+      }
     }
   };
   

lucene/test-framework/src/java/org/apache/lucene/codecs/lucene42/Lucene42RWDocValuesFormat.java

@@ -21,15 +21,21 @@ import java.io.IOException;
 
 import org.apache.lucene.codecs.DocValuesConsumer;
 import org.apache.lucene.index.SegmentWriteState;
+import org.apache.lucene.util.LuceneTestCase;
 
 /**
  * Read-write version of {@link Lucene42DocValuesFormat} for testing.
  */
+@SuppressWarnings("deprecation")
 public class Lucene42RWDocValuesFormat extends Lucene42DocValuesFormat {
   
   @Override
   public DocValuesConsumer fieldsConsumer(SegmentWriteState state) throws IOException {
-    // note: we choose DEFAULT here (its reasonably fast, and for small bpv has tiny waste)
+    if (!LuceneTestCase.OLD_FORMAT_IMPERSONATION_IS_ACTIVE) {
-    return new Lucene42DocValuesConsumer(state, DATA_CODEC, DATA_EXTENSION, METADATA_CODEC, METADATA_EXTENSION, acceptableOverheadRatio);
+      return super.fieldsConsumer(state);
+    } else {
+      // note: we choose DEFAULT here (its reasonably fast, and for small bpv has tiny waste)
+      return new Lucene42DocValuesConsumer(state, DATA_CODEC, DATA_EXTENSION, METADATA_CODEC, METADATA_EXTENSION, acceptableOverheadRatio);
+    }
   }
 }

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

@@ -332,9 +332,13 @@ public abstract class LuceneTestCase extends Assert {
   // -----------------------------------------------------------------
 
   /**
+   * When {@code true}, Codecs for old Lucene version will support writing
+   * indexes in that format. Defaults to {@code true}, can be disabled by
+   * spdecific tests on demand.
+   * 
    * @lucene.internal
    */
-  public static boolean PREFLEX_IMPERSONATION_IS_ACTIVE;
+  public static boolean OLD_FORMAT_IMPERSONATION_IS_ACTIVE = true;
 
 
   // -----------------------------------------------------------------