--- a/lucene/src/luan/modules/lucene/LuceneIndex.java	Mon Jul 13 20:53:02 2015 -0600
+++ b/lucene/src/luan/modules/lucene/LuceneIndex.java	Tue Jul 14 17:40:48 2015 -0600
@@ -135,7 +135,7 @@
 
 	public void save(LuanState luan,LuanTable doc) throws LuanException, IOException {
 		if( doc.get(luan,"type")==null )
-			throw luan.exception("missing 'type' field");
+			throw new LuanException(luan,"missing 'type' field");
 		Long id = (Long)doc.get(luan,"id");
 
 		boolean commit = !writeLock.isHeldByCurrentThread();
@@ -212,7 +212,7 @@
 
 	public void backup(LuanState luan,String zipFile) throws LuanException, IOException {
 		if( !zipFile.endsWith(".zip") )
-			throw luan.exception("file "+zipFile+" doesn't end with '.zip'");
+			throw new LuanException(luan,"file "+zipFile+" doesn't end with '.zip'");
 		IndexCommit ic = snapshotDeletionPolicy.snapshot();
 		try {
 			ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));
@@ -265,7 +265,7 @@
 			try {
 				return toTable(luan,searcher.doc(docID));
 			} catch(IOException e) {
-				throw luan.exception(e);
+				throw new LuanException(luan,e);
 			}
 		}
 	}
@@ -309,7 +309,7 @@
 		try {
 			if( fn!=null && n==null ) {
 				if( sortStr != null )
-					throw luan.exception("sort must be nil when n is nil");
+					throw new LuanException(luan,"sort must be nil when n is nil");
 				final DocFn docFn = new DocFn(searcher);
 				MyCollector col = new MyCollector() {
 					@Override public void collect(int doc) {
@@ -350,7 +350,7 @@
 
 	public Object search_in_transaction(LuanState luan,LuanFunction fn) throws LuanException, IOException {
 		if( threadLocalSearcher.get() != null )
-			throw luan.exception("can't nest search_in_transaction calls");
+			throw new LuanException(luan,"can't nest search_in_transaction calls");
 		IndexSearcher searcher = openSearcher();
 		threadLocalSearcher.set(searcher);
 		try {
@@ -375,14 +375,14 @@
 
 		@Override public void __new_index(LuanState luan,LuanTable tbl,Object key,Object value) throws LuanException {
 			if( !(key instanceof String) )
-				throw luan.exception("key must be string");
+				throw new LuanException(luan,"key must be string");
 			String field = (String)key;
 			if( value==null ) {  // delete
 				mfp.fields.remove(field);
 				return;
 			}
 			if( !(value instanceof FieldParser) )
-				throw luan.exception("value must be FieldParser like the values of Lucene.type");
+				throw new LuanException(luan,"value must be FieldParser like the values of Lucene.type");
 			FieldParser parser = (FieldParser)value;
 			mfp.fields.put( field, parser );
 		}
@@ -406,7 +406,7 @@
 		for( Map.Entry<Object,Object> entry : table.iterable(luan) ) {
 			Object key = entry.getKey();
 			if( !(key instanceof String) )
-				throw luan.exception("key must be string");
+				throw new LuanException(luan,"key must be string");
 			String name = (String)key;
 			Object value = entry.getValue();
 			if( value instanceof String ) {
@@ -441,7 +441,7 @@
 				byte[] b = (byte[])value;
 				doc.add(new StoredField(name, b));
 			} else
-				throw luan.exception("invalid value type "+value.getClass()+"' for '"+name+"'");
+				throw new LuanException(luan,"invalid value type "+value.getClass()+"' for '"+name+"'");
 		}
 		return doc;
 	}
@@ -467,7 +467,7 @@
 				table.rawPut(name,s);
 				continue;
 			}
-			throw luan.exception("invalid field type for "+ifld);
+			throw new LuanException(luan,"invalid field type for "+ifld);
 		}
 		return table;
 	}