LUCENE-5662: add missing null checks to Field to avoid aborting exceptions

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1593577 13f79535-47bb-0310-9956-ffa450edef68

lucene/core/src/java/org/apache/lucene/document/Field.java

@@ -211,6 +211,9 @@ public class Field implements IndexableField, StorableField {
     if (name == null) {
       throw new IllegalArgumentException("name cannot be null");
     }
+    if (bytes == null) {
+      throw new IllegalArgumentException("bytes cannot be null");
+    }
     if (type.indexed()) {
       throw new IllegalArgumentException("Fields with BytesRef values cannot be indexed");
     }
@@ -299,6 +302,9 @@ public class Field implements IndexableField, StorableField {
     if (!(fieldsData instanceof String)) {
       throw new IllegalArgumentException("cannot change value type from " + fieldsData.getClass().getSimpleName() + " to String");
     }
+    if (value == null) {
+      throw new IllegalArgumentException("value cannot be null");
+    }
     fieldsData = value;
   }
   
@@ -335,6 +341,9 @@ public class Field implements IndexableField, StorableField {
     if (type.indexed()) {
       throw new IllegalArgumentException("cannot set a BytesRef value on an indexed field");
     }
+    if (value == null) {
+      throw new IllegalArgumentException("value cannot be null");
+    }
     fieldsData = value;
   }
 

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

@@ -42,6 +42,7 @@ import org.apache.lucene.document.FieldType;
 import org.apache.lucene.document.NumericDocValuesField;
 import org.apache.lucene.document.SortedDocValuesField;
 import org.apache.lucene.document.SortedSetDocValuesField;
+import org.apache.lucene.document.StoredField;
 import org.apache.lucene.document.StringField;
 import org.apache.lucene.document.TextField;
 import org.apache.lucene.index.IndexWriterConfig.OpenMode;
@@ -1488,6 +1489,149 @@ public class TestIndexWriterExceptions extends LuceneTestCase {
     dir.close();
   }
   
+  /** test a null string value doesn't abort the entire segment */
+  public void testNullStoredField() throws Exception {
+    Directory dir = newDirectory();
+    Analyzer analyzer = new MockAnalyzer(random());
+    IndexWriter iw = new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, analyzer));
+    // add good document
+    Document doc = new Document();
+    iw.addDocument(doc);
+    try {
+      // set to null value
+      String value = null;
+      doc.add(new StoredField("foo", value));
+      iw.addDocument(doc);
+    } catch (IllegalArgumentException expected) {}
+    iw.shutdown();
+    // make sure we see our good doc
+    DirectoryReader r = DirectoryReader.open(dir);
+    assertEquals(1, r.numDocs());
+    r.close();
+    dir.close();
+  }
+  
+  /** test a null string value doesn't abort the entire segment */
+  public void testNullStoredFieldReuse() throws Exception {
+    Directory dir = newDirectory();
+    Analyzer analyzer = new MockAnalyzer(random());
+    IndexWriter iw = new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, analyzer));
+    // add good document
+    Document doc = new Document();
+    Field theField = new StoredField("foo", "hello", StoredField.TYPE);
+    doc.add(theField);
+    iw.addDocument(doc);
+    try {
+      // set to null value
+      theField.setStringValue(null);
+      iw.addDocument(doc);
+    } catch (IllegalArgumentException expected) {}
+    iw.shutdown();
+    // make sure we see our good doc
+    DirectoryReader r = DirectoryReader.open(dir);
+    assertEquals(1, r.numDocs());
+    r.close();
+    dir.close();
+  }
+  
+  /** test a null byte[] value doesn't abort the entire segment */
+  public void testNullStoredBytesField() throws Exception {
+    Directory dir = newDirectory();
+    Analyzer analyzer = new MockAnalyzer(random());
+    IndexWriter iw = new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, analyzer));
+    // add good document
+    Document doc = new Document();
+    iw.addDocument(doc);
+
+    try {
+      // set to null value
+      byte v[] = null;
+      Field theField = new StoredField("foo", v);
+      doc.add(theField);
+      iw.addDocument(doc);
+    } catch (NullPointerException expected) {}
+    iw.shutdown();
+    // make sure we see our good doc
+    DirectoryReader r = DirectoryReader.open(dir);
+    assertEquals(1, r.numDocs());
+    r.close();
+    dir.close();
+  }
+  
+  /** test a null byte[] value doesn't abort the entire segment */
+  public void testNullStoredBytesFieldReuse() throws Exception {
+    Directory dir = newDirectory();
+    Analyzer analyzer = new MockAnalyzer(random());
+    IndexWriter iw = new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, analyzer));
+    // add good document
+    Document doc = new Document();
+    Field theField = new StoredField("foo", new BytesRef("hello").bytes);
+    doc.add(theField);
+    iw.addDocument(doc);
+    try {
+      // set to null value
+      byte v[] = null;
+      theField.setBytesValue(v);
+      iw.addDocument(doc);
+    } catch (NullPointerException expected) {}
+    iw.shutdown();
+    // make sure we see our good doc
+    DirectoryReader r = DirectoryReader.open(dir);
+    assertEquals(1, r.numDocs());
+    r.close();
+    dir.close();
+  }
+  
+  /** test a null bytesref value doesn't abort the entire segment */
+  public void testNullStoredBytesRefField() throws Exception {
+    Directory dir = newDirectory();
+    Analyzer analyzer = new MockAnalyzer(random());
+    IndexWriter iw = new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, analyzer));
+    // add good document
+    Document doc = new Document();
+    iw.addDocument(doc);
+
+    try {
+      // set to null value
+      BytesRef v = null;
+      Field theField = new StoredField("foo", v);
+      doc.add(theField);
+      iw.addDocument(doc);
+    } catch (IllegalArgumentException expected) {}
+    iw.shutdown();
+    // make sure we see our good doc
+    DirectoryReader r = DirectoryReader.open(dir);
+    assertEquals(1, r.numDocs());
+    r.close();
+    dir.close();
+  }
+  
+  /** test a null bytesref value doesn't abort the entire segment */
+  public void testNullStoredBytesRefFieldReuse() throws Exception {
+    Directory dir = newDirectory();
+    Analyzer analyzer = new MockAnalyzer(random());
+    IndexWriter iw = new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, analyzer));
+    // add good document
+    Document doc = new Document();
+    Field theField = new StoredField("foo", new BytesRef("hello"));
+    doc.add(theField);
+    iw.addDocument(doc);
+    try {
+      // set to null value
+      BytesRef v = null;
+      theField.setBytesValue(v);
+      iw.addDocument(doc);
+    } catch (IllegalArgumentException expected) {}
+    iw.shutdown();
+    // make sure we see our good doc
+    DirectoryReader r = DirectoryReader.open(dir);
+    assertEquals(1, r.numDocs());
+    r.close();
+    dir.close();
+  }
+  
+  // TODO: we could also check isValid, to catch "broken" bytesref values, might be too much?
+  
   static class UOEDirectory extends RAMDirectory {
     boolean doFail = false;