diff --git a/core/src/main/java/com/riiablo/table/TsvParser.java b/core/src/main/java/com/riiablo/table/TsvParser.java
index 29bd06e5..1322944c 100644
--- a/core/src/main/java/com/riiablo/table/TsvParser.java
+++ b/core/src/main/java/com/riiablo/table/TsvParser.java
@@ -180,6 +180,7 @@ public class TsvParser implements ParserInput {
     fieldNames.add(fieldName);
   }
 
+  @Override
   public int numFields() {
     return numFields;
   }
@@ -192,6 +193,7 @@ public class TsvParser implements ParserInput {
     return fieldNames.get(fieldId);
   }
 
+  @Override
   public int numRecords() {
     return numRecords;
   }
diff --git a/table/core/src/main/java/com/riiablo/table/ParserInput.java b/table/core/src/main/java/com/riiablo/table/ParserInput.java
index 6153f620..727adea9 100644
--- a/table/core/src/main/java/com/riiablo/table/ParserInput.java
+++ b/table/core/src/main/java/com/riiablo/table/ParserInput.java
@@ -2,7 +2,11 @@ package com.riiablo.table;
 
 public interface ParserInput {
   int fieldId(String fieldName);
-  int recordId(String fieldName);
+  int numFields();
+
+  int recordId(String recordName);
+  int numRecords();
+
   CharSequence token(int recordId, int fieldId);
 
   byte parseByte(int recordId, int fieldId);