Added checkstyle.

checkstyle.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC
+    "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
+    "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">
+
+<module name="Checker">
+
+    <module name="RegexpSingleline">
+        <!-- \s matches whitespace character, $ matches end of line. -->
+        <property name="format" value="\s+$"/>
+        <property name="message" value="Line has trailing spaces."/>
+    </module>
+
+    <module name="TreeWalker">
+
+        <property name="cacheFile" value="${checkstyle.cache.file}"/>
+
+        <!-- ensure we have tabs only -->
+        <module name="RegexpSinglelineJava">
+            <property name="format" value="^\t* +\t*\S"/>
+            <property name="message" value="Line has leading space characters; indentation should be performed with tabs only."/>
+            <property name="ignoreComments" value="true"/>
+        </module>
+
+        <!-- Modifier Checks                                    -->
+        <module name="ModifierOrder"/>
+        <module name="RedundantModifier"/>
+
+        <!-- Checks for common coding problems               -->
+        <!-- Disabled until http://sourceforge.net/tracker/?func=detail&aid=2843447&group_id=29721&atid=397078 is fixed-->
+        <!--<module name="DoubleCheckedLocking"/>-->
+        <module name="EmptyStatement"/>
+        <module name="EqualsHashCode"/>
+        <module name="IllegalInstantiation"/>
+        <module name="RedundantThrows">
+            <property name="allowUnchecked" value="true"/>
+        </module>
+
+        <!-- Miscellaneous other checks.                   -->
+        <module name="UpperEll"/>
+        <module name="PackageAnnotation"/>
+        <module name="CovariantEquals"/>
+        <module name="ArrayTypeStyle"/>
+
+    </module>
+
+</module>

pom.xml

@@ -30,6 +30,35 @@
 					<target>1.6</target>
 				</configuration>
 			</plugin>
+                <!-- Checkstyle -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-checkstyle-plugin</artifactId>
+                <version>2.9.1</version>
+                <configuration>
+                    <configLocation>checkstyle.xml</configLocation>
+                    <includeTestSourceDirectory>true</includeTestSourceDirectory>
+                    <consoleOutput>true</consoleOutput>
+                    <failsOnError>false</failsOnError>
+                    <useFile/>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>check-style</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>checkstyle</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>test-check-style</id>
+                        <phase>test-compile</phase>
+                        <goals>
+                            <goal>checkstyle</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
 		</plugins>
 	</build>
 

src/main/java/org/springframework/data/jdbc/AbstractJdbcRepository.java

@@ -21,40 +21,40 @@ public abstract class AbstractJdbcRepository<T extends Persistable<ID>,ID extend
 	private JdbcTemplate jdbcTemplate;
 	private String tableName;
 	private String idColumn;
-	
+
 	private final String deleteQuery;
 	private final String selectAll;
 	private final String selectById;
 	private final String countQuery;
-	
+
 	RowMapper<T> rowMapper;
 	Updater<T> updater;
-	
+
 	public interface Updater<T> {
-		public void mapColumns(T t,Map<String,Object> mapping);	
+		public void mapColumns(T t,Map<String,Object> mapping);
 	}
-	
+
 	public AbstractJdbcRepository(
 			RowMapper<T> rowMapper,
 			Updater<T> updater,
 			String tableName,
 			String idColumn,
 			JdbcTemplate jdbcTemplate) {
-		
+
 		this.updater = updater;
 		this.rowMapper = rowMapper;
-		
+
 		this.jdbcTemplate = jdbcTemplate;
 		this.tableName = tableName;
 		this.idColumn = idColumn;
-		
+
 		this.deleteQuery = String.format("delete from %s where %s = ?",tableName,idColumn);
 		this.selectAll = String.format("select * from %s",tableName);
 		this.selectById = String.format("select * from %s where %s = ?",tableName,idColumn);
 		this.countQuery = String.format("select count(%s) from %s",idColumn, tableName);
-	
+
 	}
-	
+
 	@Override
 	public long count() {
 		return jdbcTemplate.queryForLong(this.countQuery);
@@ -106,22 +106,22 @@ public T save(T entity) {
 		updater.mapColumns(entity, columns);
 
 		String updateQuery = String.format("update %s set ",this.tableName);
-		
+
 		Object[] obj = new Object[columns.size()];
 		int i = 0;
-		
+
 		for(Map.Entry<String,Object> e : columns.entrySet())
 		{
 			obj[i++] = e.getValue();
-			updateQuery += " "  + e.getKey() + " = ? "; 
+			updateQuery += " "  + e.getKey() + " = ? ";
 		}
-		
+
 		obj[i] = entity.getId();
-		
+
 		updateQuery += String.format(" where %s = ? ",this.idColumn);
-				
-		jdbcTemplate.update(updateQuery,obj);		
-		
+
+		jdbcTemplate.update(updateQuery,obj);
+
 		return entity;
 	}
 
@@ -138,12 +138,12 @@ public Iterable<T> save(Iterable<? extends T> entities) {
 	@Override
 	public Iterable<T> findAll(Sort sort) {
 		String qu = this.selectAll;
-		
+
 		for(Order o : sort)
 		{
 			qu += " ORDER BY " + o.getProperty() + " " + o.getDirection().toString() + " ";
 		}
-		
+
 		return jdbcTemplate.query(qu,this.rowMapper);
 	}
 

src/test/java/org/springframework/data/jdbc/User.java

@@ -8,9 +8,9 @@ public class User implements Persistable<String> {
 
 	private String userName;
 	private String password;
-	
+
 	private String fullName;
-	
+
 	private String role;
 
 	protected void setUserName(String userName) {
@@ -48,7 +48,7 @@ public String getRole() {
 	public User(
 			String id,
 			String userName,
-			String password, 
+			String password,
 			String fullName,
 			String role) {
 		this.id = id;

src/test/java/org/springframework/data/jdbc/UserRepository.java

@@ -30,10 +30,10 @@ public User mapRow(ResultSet rs, int rowNum) throws SQLException {
 				rs.getString("userName"),
 				rs.getString("password"),
 				rs.getString("fullName"),
-				rs.getString("role"));				
+				rs.getString("role"));
 		}
 	};
-	
+
 	static Updater<User> userUpdaterMapper = new Updater<User>() {
 		@Override
 		public void mapColumns(User t, Map<String, Object> mapping) {