add missing hashcode/equals to these rewrite methods

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1451525 13f79535-47bb-0310-9956-ffa450edef68

lucene/core/src/java/org/apache/lucene/search/DocTermOrdsRewriteMethod.java

@@ -163,4 +163,20 @@ public final class DocTermOrdsRewriteMethod extends MultiTermQuery.RewriteMethod
       };
     }
   }
+
+  @Override
+  public boolean equals(Object obj) {
+    if (this == obj)
+      return true;
+    if (obj == null)
+      return false;
+    if (getClass() != obj.getClass())
+      return false;
+    return true;
+  }
+
+  @Override
+  public int hashCode() {
+    return 877;
+  }
 }

lucene/core/src/java/org/apache/lucene/search/FieldCacheRewriteMethod.java

@@ -162,4 +162,20 @@ public final class FieldCacheRewriteMethod extends MultiTermQuery.RewriteMethod
       };
     }
   }
+  
+  @Override
+  public boolean equals(Object obj) {
+    if (this == obj)
+      return true;
+    if (obj == null)
+      return false;
+    if (getClass() != obj.getClass())
+      return false;
+    return true;
+  }
+
+  @Override
+  public int hashCode() {
+    return 641;
+  }
 }

lucene/core/src/test/org/apache/lucene/search/TestDocTermOrdsRewriteMethod.java

@@ -126,4 +126,19 @@ public class TestDocTermOrdsRewriteMethod extends LuceneTestCase {
 
     CheckHits.checkEqual(inverted, invertedDocs.scoreDocs, docValuesDocs.scoreDocs);
   }
+  
+  public void testEquals() throws Exception {
+    RegexpQuery a1 = new RegexpQuery(new Term(fieldName, "[aA]"), RegExp.NONE);
+    RegexpQuery a2 = new RegexpQuery(new Term(fieldName, "[aA]"), RegExp.NONE);
+    RegexpQuery b = new RegexpQuery(new Term(fieldName, "[bB]"), RegExp.NONE);
+    assertEquals(a1, a2);
+    assertFalse(a1.equals(b));
+    
+    a1.setRewriteMethod(new DocTermOrdsRewriteMethod());
+    a2.setRewriteMethod(new DocTermOrdsRewriteMethod());
+    b.setRewriteMethod(new DocTermOrdsRewriteMethod());
+    assertEquals(a1, a2);
+    assertFalse(a1.equals(b));
+    QueryUtils.check(a1);
+  }
 }

lucene/core/src/test/org/apache/lucene/search/TestFieldCacheRewriteMethod.java

@@ -41,4 +41,19 @@ public class TestFieldCacheRewriteMethod extends TestRegexpRandom2 {
 
     CheckHits.checkEqual(fieldCache, fieldCacheDocs.scoreDocs, filterDocs.scoreDocs);
   }
+  
+  public void testEquals() throws Exception {
+    RegexpQuery a1 = new RegexpQuery(new Term(fieldName, "[aA]"), RegExp.NONE);
+    RegexpQuery a2 = new RegexpQuery(new Term(fieldName, "[aA]"), RegExp.NONE);
+    RegexpQuery b = new RegexpQuery(new Term(fieldName, "[bB]"), RegExp.NONE);
+    assertEquals(a1, a2);
+    assertFalse(a1.equals(b));
+    
+    a1.setRewriteMethod(new FieldCacheRewriteMethod());
+    a2.setRewriteMethod(new FieldCacheRewriteMethod());
+    b.setRewriteMethod(new FieldCacheRewriteMethod());
+    assertEquals(a1, a2);
+    assertFalse(a1.equals(b));
+    QueryUtils.check(a1);
+  }
 }