DATAMONGO-1337 - Another round of polishes on SonarQuber complaints.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/AggregationFunctionExpressions.java

@@ -16,6 +16,7 @@
 package org.springframework.data.mongodb.core.aggregation;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 import org.springframework.util.Assert;
@@ -56,7 +57,7 @@ public enum AggregationFunctionExpressions {
 	static class FunctionExpression implements AggregationExpression {
 
 		private final String name;
-		private final Object[] values;
+		private final List<Object> values;
 
 		/**
 		 * Creates a new {@link FunctionExpression} for the given name and values.
@@ -70,7 +71,7 @@ public enum AggregationFunctionExpressions {
 			Assert.notNull(values, "Values must not be null!");
 
 			this.name = name;
-			this.values = values;
+			this.values = Arrays.asList(values);
 		}
 
 		/*
@@ -80,10 +81,10 @@ public enum AggregationFunctionExpressions {
 		@Override
 		public DBObject toDbObject(AggregationOperationContext context) {
 
-			List<Object> args = new ArrayList<Object>(values.length);
+			List<Object> args = new ArrayList<Object>(values.size());
 
-			for (int i = 0; i < values.length; i++) {
-				args.add(unpack(values[i], context));
+			for (Object value : values) {
+				args.add(unpack(value, context));
 			}
 
 			return new BasicDBObject("$" + name, args);

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/GeoConverters.java

@@ -111,9 +111,13 @@ abstract class GeoConverters {
 		@Override
 		public Point convert(DBObject source) {
 
+			if (source == null) {
+				return null;
+			}
+
 			Assert.isTrue(source.keySet().size() == 2, "Source must contain 2 elements");
 
-			return source == null ? null : new Point((Double) source.get("x"), (Double) source.get("y"));
+			return new Point((Double) source.get("x"), (Double) source.get("y"));
 		}
 	}
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MappingMongoConverter.java

@@ -1198,10 +1198,6 @@ public class MappingMongoConverter extends AbstractMongoConverter implements App
 
 		Object object = dbref == null ? null : path.getPathItem(dbref.getId(), dbref.getCollectionName());
 
-		if (object != null) {
-			return (T) object;
-		}
-
 		return (T) (object != null ? object : read(type, readRef(dbref), path));
 	}
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/QueryMapper.java

@@ -936,7 +936,7 @@ public class QueryMapper {
 			 */
 			protected String mapPropertyName(MongoPersistentProperty property) {
 
-				String mappedName = PropertyToFieldNameConverter.INSTANCE.convert(property);
+				StringBuilder mappedName = new StringBuilder(PropertyToFieldNameConverter.INSTANCE.convert(property));
 				boolean inspect = iterator.hasNext();
 
 				while (inspect) {
@@ -945,13 +945,13 @@ public class QueryMapper {
 					boolean isPositional = (isPositionalParameter(partial) && (property.isMap() || property.isCollectionLike()));
 
 					if (isPositional) {
-						mappedName += "." + partial;
+						mappedName.append(".").append(partial);
 					}
 
 					inspect = isPositional && iterator.hasNext();
 				}
 
-				return mappedName;
+				return mappedName.toString();
 			}
 
 			private static boolean isPositionalParameter(String partial) {

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/Index.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2014 the original author or authors.
+ * Copyright 2010-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@ package org.springframework.data.mongodb.core.index;
 
 import java.util.LinkedHashMap;
 import java.util.Map;
+import java.util.Map.Entry;
 import java.util.concurrent.TimeUnit;
 
 import org.springframework.data.domain.Sort.Direction;
@@ -44,7 +45,7 @@ public class Index implements IndexDefinition {
 		 * 
 		 * @deprecated since 1.7.
 		 */
-		@Deprecated//
+		@Deprecated //
 		DROP
 	}
 
@@ -175,11 +176,18 @@ public class Index implements IndexDefinition {
 		return unique();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.index.IndexDefinition#getIndexKeys()
+	 */
 	public DBObject getIndexKeys() {
+
 		DBObject dbo = new BasicDBObject();
-		for (String k : fieldSpec.keySet()) {
-			dbo.put(k, fieldSpec.get(k).equals(Direction.ASC) ? 1 : -1);
+
+		for (Entry<String, Direction> entry : fieldSpec.entrySet()) {
+			dbo.put(entry.getKey(), Direction.ASC.equals(entry.getValue()) ? 1 : -1);
 		}
+
 		return dbo;
 	}
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/MapReduceTiming.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2011 the original author or authors.
+ * Copyright 2010-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,13 +17,10 @@ package org.springframework.data.mongodb.core.mapreduce;
 
 public class MapReduceTiming {
 
-	private long mapTime;
-
-	private long emitLoopTime;
-
-	private long totalTime;
+	private long mapTime, emitLoopTime, totalTime;
 
 	public MapReduceTiming(long mapTime, long emitLoopTime, long totalTime) {
+
 		this.mapTime = mapTime;
 		this.emitLoopTime = emitLoopTime;
 		this.totalTime = totalTime;
@@ -41,37 +38,52 @@ public class MapReduceTiming {
 		return totalTime;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see java.lang.Object#toString()
+	 */
 	@Override
 	public String toString() {
 		return "MapReduceTiming [mapTime=" + mapTime + ", emitLoopTime=" + emitLoopTime + ", totalTime=" + totalTime + "]";
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see java.lang.Object#hashCode()
+	 */
 	@Override
 	public int hashCode() {
+
 		final int prime = 31;
 		int result = 1;
+
 		result = prime * result + (int) (emitLoopTime ^ (emitLoopTime >>> 32));
 		result = prime * result + (int) (mapTime ^ (mapTime >>> 32));
 		result = prime * result + (int) (totalTime ^ (totalTime >>> 32));
+
 		return result;
 	}
 
+	/*
+	 * 
+	 * (non-Javadoc)
+	 * @see java.lang.Object#equals(java.lang.Object)
+	 */
 	@Override
 	public boolean equals(Object obj) {
-		if (this == obj)
+
+		if (this == obj) {
 			return true;
-		if (obj == null)
-			return false;
-		if (getClass() != obj.getClass())
-			return false;
-		MapReduceTiming other = (MapReduceTiming) obj;
-		if (emitLoopTime != other.emitLoopTime)
-			return false;
-		if (mapTime != other.mapTime)
-			return false;
-		if (totalTime != other.totalTime)
+		}
+
+		if (!(obj instanceof MapReduceTiming)) {
 			return false;
-		return true;
-	}
+		}
+
+		MapReduceTiming that = (MapReduceTiming) obj;
 
+		return this.emitLoopTime == that.emitLoopTime && //
+				this.mapTime == that.mapTime && //
+				this.totalTime == that.totalTime;
+	}
 }

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Criteria.java

@@ -22,6 +22,7 @@ import java.util.Arrays;
 import java.util.Collection;
 import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map.Entry;
 import java.util.regex.Pattern;
 
 import org.bson.BSON;
@@ -565,9 +566,10 @@ public class Criteria implements CriteriaDefinition {
 		DBObject dbo = new BasicDBObject();
 		boolean not = false;
 
-		for (String k : this.criteria.keySet()) {
+		for (Entry<String, Object> entry : criteria.entrySet()) {
 
-			Object value = this.criteria.get(k);
+			String key = entry.getKey();
+			Object value = entry.getValue();
 
 			if (requiresGeoJsonFormat(value)) {
 				value = new BasicDBObject("$geometry", value);
@@ -575,14 +577,14 @@ public class Criteria implements CriteriaDefinition {
 
 			if (not) {
 				DBObject notDbo = new BasicDBObject();
-				notDbo.put(k, value);
+				notDbo.put(key, value);
 				dbo.put("$not", notDbo);
 				not = false;
 			} else {
-				if ("$not".equals(k) && value == null) {
+				if ("$not".equals(key) && value == null) {
 					not = true;
 				} else {
-					dbo.put(k, value);
+					dbo.put(key, value);
 				}
 			}
 		}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Field.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 the original author or authors.
+ * Copyright 2010-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -83,14 +83,10 @@ public class Field {
 
 	public DBObject getFieldsObject() {
 
-		DBObject dbo = new BasicDBObject();
+		DBObject dbo = new BasicDBObject(criteria);
 
-		for (String k : criteria.keySet()) {
-			dbo.put(k, criteria.get(k));
-		}
-
-		for (String k : slices.keySet()) {
-			dbo.put(k, new BasicDBObject("$slice", slices.get(k)));
+		for (Entry<String, Object> entry : slices.entrySet()) {
+			dbo.put(entry.getKey(), new BasicDBObject("$slice", entry.getValue()));
 		}
 
 		for (Entry<String, Criteria> entry : elemMatchs.entrySet()) {
@@ -134,8 +130,8 @@ public class Field {
 			return false;
 		}
 
-		boolean samePositionKey = this.postionKey == null ? that.postionKey == null : this.postionKey
-				.equals(that.postionKey);
+		boolean samePositionKey = this.postionKey == null ? that.postionKey == null
+				: this.postionKey.equals(that.postionKey);
 		boolean samePositionValue = this.positionValue == that.positionValue;
 
 		return samePositionKey && samePositionValue;

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Query.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2014 the original author or authors.
+ * Copyright 2010-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -94,9 +94,9 @@ public class Query {
 		if (existing == null) {
 			this.criteria.put(key, criteriaDefinition);
 		} else {
-			throw new InvalidMongoDbApiUsageException("Due to limitations of the com.mongodb.BasicDBObject, "
-					+ "you can't add a second '" + key + "' criteria. " + "Query already contains '"
-					+ existing.getCriteriaObject() + "'.");
+			throw new InvalidMongoDbApiUsageException(
+					"Due to limitations of the com.mongodb.BasicDBObject, " + "you can't add a second '" + key + "' criteria. "
+							+ "Query already contains '" + existing.getCriteriaObject() + "'.");
 		}
 
 		return this;
@@ -221,10 +221,8 @@ public class Query {
 
 		DBObject dbo = new BasicDBObject();
 
-		for (String k : criteria.keySet()) {
-			CriteriaDefinition c = criteria.get(k);
-			DBObject cl = c.getCriteriaObject();
-			dbo.putAll(cl);
+		for (CriteriaDefinition definition : criteria.values()) {
+			dbo.putAll(definition.getCriteriaObject());
 		}
 
 		if (!restrictedTypes.isEmpty()) {

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Update.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2014 the original author or authors.
+ * Copyright 2010-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -327,12 +327,7 @@ public class Update {
 	}
 
 	public DBObject getUpdateObject() {
-
-		DBObject dbo = new BasicDBObject();
-		for (String k : modifierOps.keySet()) {
-			dbo.put(k, modifierOps.get(k));
-		}
-		return dbo;
+		return new BasicDBObject(modifierOps);
 	}
 
 	protected void addFieldOperation(String operator, String key, Object value) {
@@ -355,8 +350,8 @@ public class Update {
 			if (existingValue instanceof BasicDBObject) {
 				keyValueMap = (BasicDBObject) existingValue;
 			} else {
-				throw new InvalidDataAccessApiUsageException("Modifier Operations should be a LinkedHashMap but was "
-						+ existingValue.getClass());
+				throw new InvalidDataAccessApiUsageException(
+						"Modifier Operations should be a LinkedHashMap but was " + existingValue.getClass());
 			}
 		}
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/MongoParametersParameterAccessor.java

@@ -15,6 +15,9 @@
  */
 package org.springframework.data.mongodb.repository.query;
 
+import java.util.Arrays;
+import java.util.List;
+
 import org.springframework.data.domain.Range;
 import org.springframework.data.geo.Distance;
 import org.springframework.data.geo.Point;
@@ -41,7 +44,9 @@ public class MongoParametersParameterAccessor extends ParametersParameterAccesso
 	 * @param values must not be {@@iteral null}.
 	 */
 	public MongoParametersParameterAccessor(MongoQueryMethod method, Object[] values) {
+
 		super(method.getParameters(), values);
+
 		this.method = method;
 	}