Index: lucene/queries/src/test/org/apache/lucene/queries/TermsFilterTest.java
===================================================================
--- lucene/queries/src/test/org/apache/lucene/queries/TermsFilterTest.java	(revision 1332052)
+++ lucene/queries/src/test/org/apache/lucene/queries/TermsFilterTest.java	(working copy)
@@ -121,4 +121,12 @@
     rd2.close();
   }
 
+  public void testToString() {
+    TermsFilter termsFilter = new TermsFilter();
+    termsFilter.addTerm(new Term("field1", "a"));
+    termsFilter.addTerm(new Term("field1", "b"));
+    termsFilter.addTerm(new Term("field1", "c"));
+    assertEquals("field1:a field1:b field1:c", termsFilter.toString());
+  }
+
 }
Index: lucene/queries/src/test/org/apache/lucene/queries/BooleanFilterTest.java
===================================================================
--- lucene/queries/src/test/org/apache/lucene/queries/BooleanFilterTest.java	(revision 1332052)
+++ lucene/queries/src/test/org/apache/lucene/queries/BooleanFilterTest.java	(working copy)
@@ -335,4 +335,34 @@
     booleanFilter.add(getTermsFilter("accessRights", "admin"), Occur.MUST);
     tstFilterCard(">0 shoulds with no matches should return no docs", 0, booleanFilter);
   }
+
+  public void testToStringOfBooleanFilterContainingTermsFilter() {
+    BooleanFilter booleanFilter = new BooleanFilter();
+    booleanFilter.add(getTermsFilter("inStock", "N"), Occur.MUST);
+    booleanFilter.add(getTermsFilter("isFragile", "Y"), Occur.MUST);
+
+    assertEquals("BooleanFilter(+inStock:N +isFragile:Y)", booleanFilter.toString());
+  }
+
+  public void testToStringOfWrappedBooleanFilters() {
+    BooleanFilter orFilter = new BooleanFilter();
+
+    BooleanFilter stockFilter = new BooleanFilter();
+    stockFilter.add(new FilterClause(getTermsFilter("inStock", "Y"), Occur.MUST));
+    stockFilter.add(new FilterClause(getTermsFilter("barCode", "12345678"), Occur.MUST));
+
+    orFilter.add(new FilterClause(stockFilter,Occur.SHOULD));
+
+    BooleanFilter productPropertyFilter = new BooleanFilter();
+    productPropertyFilter.add(new FilterClause(getTermsFilter("isHeavy", "N"), Occur.MUST));
+    productPropertyFilter.add(new FilterClause(getTermsFilter("isDamaged", "Y"), Occur.MUST));
+
+    orFilter.add(new FilterClause(productPropertyFilter,Occur.SHOULD));
+
+    BooleanFilter composedFilter = new BooleanFilter();
+    composedFilter.add(new FilterClause(orFilter,Occur.MUST));
+
+    assertEquals("BooleanFilter(+BooleanFilter(BooleanFilter(+inStock:Y +barCode:12345678) BooleanFilter(+isHeavy:N +isDamaged:Y)))",
+        composedFilter.toString());
+  }
 }
Index: lucene/queries/src/java/org/apache/lucene/queries/TermsFilter.java
===================================================================
--- lucene/queries/src/java/org/apache/lucene/queries/TermsFilter.java	(revision 1332052)
+++ lucene/queries/src/java/org/apache/lucene/queries/TermsFilter.java	(working copy)
@@ -114,4 +114,17 @@
     return hash;
   }
 
+  @Override
+  public String toString() {
+    StringBuilder builder = new StringBuilder();
+    boolean first = true;
+    for (Term term : terms) {
+      if (!first) {
+        builder.append(' ');
+      }
+      builder.append(term.field()).append(":").append(term.text());
+      first = false;
+    }
+    return builder.toString();
+  }
 }