LUCENE-1790 hashCode/equals update

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@804994 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/lucene/search/Query.java

@@ -213,4 +213,24 @@ public abstract class Query implements java.io.Serializable, Cloneable {
       throw new RuntimeException("Clone not supported: " + e.getMessage());
     }
   }
+
+  public int hashCode() {
+    final int prime = 31;
+    int result = 1;
+    result = prime * result + Float.floatToIntBits(boost);
+    return result;
+  }
+
+  public boolean equals(Object obj) {
+    if (this == obj)
+      return true;
+    if (obj == null)
+      return false;
+    if (getClass() != obj.getClass())
+      return false;
+    Query other = (Query) obj;
+    if (Float.floatToIntBits(boost) != Float.floatToIntBits(other.boost))
+      return false;
+    return true;
+  }
 }

src/java/org/apache/lucene/search/payloads/AveragePayloadFunction.java

@@ -1,6 +1,5 @@
 package org.apache.lucene.search.payloads;
 
-import org.apache.lucene.index.Term;
 /**
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -35,4 +34,20 @@ public class AveragePayloadFunction extends PayloadFunction{
     return numPayloadsSeen > 0 ? (payloadScore / numPayloadsSeen) : 1;
   }
 
+  public int hashCode() {
+    final int prime = 31;
+    int result = 1;
+    result = prime * result + this.getClass().hashCode();
+    return result;
+  }
+
+  public boolean equals(Object obj) {
+    if (this == obj)
+      return true;
+    if (obj == null)
+      return false;
+    if (getClass() != obj.getClass())
+      return false;
+    return true;
+  }
 }

src/java/org/apache/lucene/search/payloads/BoostingFunctionTermQuery.java

@@ -170,11 +170,31 @@ public class BoostingFunctionTermQuery extends SpanTermQuery  implements Payload
     }
   }
 
-  public boolean equals(Object o) {
-    if (!(o instanceof BoostingFunctionTermQuery))
-      return false;
-    BoostingFunctionTermQuery other = (BoostingFunctionTermQuery) o;
-    return (this.getBoost() == other.getBoost())
-            && this.term.equals(other.term)  && this.function.equals(other.function);
+  public int hashCode() {
+    final int prime = 31;
+    int result = super.hashCode();
+    result = prime * result + ((function == null) ? 0 : function.hashCode());
+    result = prime * result + (includeSpanScore ? 1231 : 1237);
+    return result;
   }
+
+  public boolean equals(Object obj) {
+    if (this == obj)
+      return true;
+    if (!super.equals(obj))
+      return false;
+    if (getClass() != obj.getClass())
+      return false;
+    BoostingFunctionTermQuery other = (BoostingFunctionTermQuery) obj;
+    if (function == null) {
+      if (other.function != null)
+        return false;
+    } else if (!function.equals(other.function))
+      return false;
+    if (includeSpanScore != other.includeSpanScore)
+      return false;
+    return true;
+  }
+
+
 }

src/java/org/apache/lucene/search/payloads/MaxPayloadFunction.java

@@ -1,6 +1,5 @@
 package org.apache.lucene.search.payloads;
 
-import org.apache.lucene.index.Term;
 /**
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -25,7 +24,7 @@ import org.apache.lucene.index.Term;
  * Is thread safe and completely reusable.
  *
  **/
-public class MaxPayloadFunction extends PayloadFunction{
+public class MaxPayloadFunction extends PayloadFunction {
   public float currentScore(int docId, String field, int start, int end, int numPayloadsSeen, float currentScore, float currentPayloadScore) {
     return Math.max(currentPayloadScore, currentScore);
   }
@@ -33,4 +32,21 @@ public class MaxPayloadFunction extends PayloadFunction{
   public float docScore(int docId, String field, int numPayloadsSeen, float payloadScore) {
     return numPayloadsSeen > 0 ? payloadScore : 1;
   }
+  
+  public int hashCode() {
+    final int prime = 31;
+    int result = 1;
+    result = prime * result + this.getClass().hashCode();
+    return result;
+  }
+
+  public boolean equals(Object obj) {
+    if (this == obj)
+      return true;
+    if (obj == null)
+      return false;
+    if (getClass() != obj.getClass())
+      return false;
+    return true;
+  }
 }

src/java/org/apache/lucene/search/payloads/MinPayloadFunction.java

@@ -1,7 +1,21 @@
 package org.apache.lucene.search.payloads;
 
-import org.apache.lucene.index.Term;
-
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 /**
  * Calculates the miniumum payload seen
@@ -16,5 +30,22 @@ public class MinPayloadFunction extends PayloadFunction {
   public float docScore(int docId, String field, int numPayloadsSeen, float payloadScore) {
     return numPayloadsSeen > 0 ? payloadScore : 1;
   }
+  
+  public int hashCode() {
+    final int prime = 31;
+    int result = 1;
+    result = prime * result + this.getClass().hashCode();
+    return result;
+  }
+
+  public boolean equals(Object obj) {
+    if (this == obj)
+      return true;
+    if (obj == null)
+      return false;
+    if (getClass() != obj.getClass())
+      return false;
+    return true;
+  }
 
 }

src/java/org/apache/lucene/search/spans/SpanTermQuery.java

@@ -61,18 +61,27 @@ public class SpanTermQuery extends SpanQuery {
     return buffer.toString();
   }
 
-  /** Returns true iff <code>o</code> is equal to this. */
-  public boolean equals(Object o) {
-    if (!(o instanceof SpanTermQuery))
-      return false;
-    SpanTermQuery other = (SpanTermQuery)o;
-    return (this.getBoost() == other.getBoost())
-      && this.term.equals(other.term);
+  public int hashCode() {
+    final int prime = 31;
+    int result = super.hashCode();
+    result = prime * result + ((term == null) ? 0 : term.hashCode());
+    return result;
   }
 
-  /** Returns a hash code value for this object.*/
-  public int hashCode() {
-    return Float.floatToIntBits(getBoost()) ^ term.hashCode() ^ 0xD23FE494;
+  public boolean equals(Object obj) {
+    if (this == obj)
+      return true;
+    if (!super.equals(obj))
+      return false;
+    if (getClass() != obj.getClass())
+      return false;
+    SpanTermQuery other = (SpanTermQuery) obj;
+    if (term == null) {
+      if (other.term != null)
+        return false;
+    } else if (!term.equals(other.term))
+      return false;
+    return true;
   }
 
   public Spans getSpans(final IndexReader reader) throws IOException {

src/test/org/apache/lucene/search/payloads/BoostingFunctionTermQueryTest.java

@@ -19,12 +19,14 @@ package org.apache.lucene.search.payloads;
 import org.apache.lucene.util.LuceneTestCase;
 import org.apache.lucene.util.English;
 import org.apache.lucene.search.IndexSearcher;
+import org.apache.lucene.search.QueryUtils;
 import org.apache.lucene.search.TopDocs;
 import org.apache.lucene.search.ScoreDoc;
 import org.apache.lucene.search.CheckHits;
 import org.apache.lucene.search.BooleanClause;
 import org.apache.lucene.search.BooleanQuery;
 import org.apache.lucene.search.DefaultSimilarity;
+import org.apache.lucene.search.spans.SpanTermQuery;
 import org.apache.lucene.search.spans.Spans;
 import org.apache.lucene.search.spans.TermSpans;
 import org.apache.lucene.analysis.Analyzer;
@@ -151,6 +153,21 @@ public class BoostingFunctionTermQueryTest extends LuceneTestCase {
     }*/
 
   }
+  
+  public void testQuery() {
+    BoostingFunctionTermQuery boostingFuncTermQuery = new BoostingFunctionTermQuery(new Term(PayloadHelper.MULTI_FIELD, "seventy"),
+        new MaxPayloadFunction());
+    QueryUtils.check(boostingFuncTermQuery);
+    
+    SpanTermQuery spanTermQuery = new SpanTermQuery(new Term(PayloadHelper.MULTI_FIELD, "seventy"));
+
+    assertTrue(boostingFuncTermQuery.equals(spanTermQuery) == spanTermQuery.equals(boostingFuncTermQuery));
+    
+    BoostingFunctionTermQuery boostingFuncTermQuery2 = new BoostingFunctionTermQuery(new Term(PayloadHelper.MULTI_FIELD, "seventy"),
+        new AveragePayloadFunction());
+    
+    QueryUtils.checkUnequal(boostingFuncTermQuery, boostingFuncTermQuery2);
+  }
 
   public void testMultipleMatchesPerDoc() throws Exception {
     BoostingFunctionTermQuery query = new BoostingFunctionTermQuery(new Term(PayloadHelper.MULTI_FIELD, "seventy"),