svn commit: r1311953 - /lucene/dev/branches/lucene3969/lucene/test-framework/src/java/org/apache/lucene/analysis/MockRandomLookaheadTokenFilter.java

[rm...@apache.org]

Author: rmuir
Date: Tue Apr 10 19:37:35 2012
New Revision: 1311953

URL: http://svn.apache.org/viewvc?rev=1311953&view=rev
Log:
LUCENE-3969: fix this filter to reset its seed... how far you peek ahead could cause some producer to fail differently....

Modified:
    lucene/dev/branches/lucene3969/lucene/test-framework/src/java/org/apache/lucene/analysis/MockRandomLookaheadTokenFilter.java

Modified: lucene/dev/branches/lucene3969/lucene/test-framework/src/java/org/apache/lucene/analysis/MockRandomLookaheadTokenFilter.java
URL: http://svn.apache.org/viewvc/lucene/dev/branches/lucene3969/lucene/test-framework/src/java/org/apache/lucene/analysis/MockRandomLookaheadTokenFilter.java?rev=1311953&r1=1311952&r2=1311953&view=diff
==============================================================================
--- lucene/dev/branches/lucene3969/lucene/test-framework/src/java/org/apache/lucene/analysis/MockRandomLookaheadTokenFilter.java (original)
+++ lucene/dev/branches/lucene3969/lucene/test-framework/src/java/org/apache/lucene/analysis/MockRandomLookaheadTokenFilter.java Tue Apr 10 19:37:35 2012
@@ -31,10 +31,12 @@ public final class MockRandomLookaheadTo
 
   private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
   private final Random random;
+  private final long seed;
 
   public MockRandomLookaheadTokenFilter(Random random, TokenStream in) {
     super(in);
-    this.random = random;
+    this.seed = random.nextLong();
+    this.random = new Random(seed);
   }
 
   @Override
@@ -57,9 +59,6 @@ public final class MockRandomLookaheadTo
 
     if (!end) {
       while (true) {
-        // We can use un-re-seeded random, because how far
-        // ahead we peek should never alter the resulting
-        // tokens as seen by the consumer:
         if (random.nextInt(3) == 1) {
           if (!peekToken()) {
             if (DEBUG) {
@@ -91,4 +90,10 @@ public final class MockRandomLookaheadTo
     }
     return result;
   }
+
+  @Override
+  public void reset() throws IOException {
+    super.reset();
+    random.setSeed(seed);
+  }
 }