[core] Fix some coding style issues in DBWrapper.java

Specifically:

1. Remove trailing spaces,
2. Replace TAB with spaces,
3. Break lines > 80 characters
4. Misc code alignment.

No functional code change. use ?w=1 on the URL to view non-whitespace changes.

core/src/main/java/com/yahoo/ycsb/DBWrapper.java

-/**                                                                                                                                                                                
- * Copyright (c) 2010 Yahoo! Inc. All rights reserved.                                                                                                                             
- *                                                                                                                                                                                 
- * Licensed 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. See accompanying                                                                                                                 
- * LICENSE file.                                                                                                                                                                   
+/**
+ * Copyright (c) 2010 Yahoo! Inc. All rights reserved.
+ *
+ * Licensed 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. See accompanying
+ * LICENSE file.
  */
 
 package com.yahoo.ycsb;
@@ -29,154 +29,165 @@ import com.yahoo.ycsb.measurements.Measurements;
  */
 public class DBWrapper extends DB
 {
-	DB _db;
-	Measurements _measurements;
+  DB _db;
+  Measurements _measurements;
+
+  public DBWrapper(DB db)
+  {
+    _db=db;
+    _measurements=Measurements.getMeasurements();
+  }
 
-	public DBWrapper(DB db)
-	{
-		_db=db;
-		_measurements=Measurements.getMeasurements();
-	}
+  /**
+   * Set the properties for this DB.
+   */
+  public void setProperties(Properties p)
+  {
+    _db.setProperties(p);
+  }
 
-	/**
-	 * Set the properties for this DB.
-	 */
-	public void setProperties(Properties p)
-	{
-		_db.setProperties(p);
-	}
+  /**
+   * Get the set of properties for this DB.
+   */
+  public Properties getProperties()
+  {
+    return _db.getProperties();
+  }
 
-	/**
-	 * Get the set of properties for this DB.
-	 */
-	public Properties getProperties()
-	{
-		return _db.getProperties();
-	}
+  /**
+   * Initialize any state for this DB.
+   * Called once per DB instance; there is one DB instance per client thread.
+   */
+  public void init() throws DBException
+  {
+    _db.init();
+  }
 
-	/**
-	 * Initialize any state for this DB.
-	 * Called once per DB instance; there is one DB instance per client thread.
-	 */
-	public void init() throws DBException
-	{
-		_db.init();
-	}
+  /**
+   * Cleanup any state for this DB.
+   * Called once per DB instance; there is one DB instance per client thread.
+   */
+  public void cleanup() throws DBException
+  {
+    long ist=_measurements.getIntendedtartTimeNs();
+    long st = System.nanoTime();
+    _db.cleanup();
+    long en=System.nanoTime();
+    measure("CLEANUP",ist, st, en);
+  }
 
-	/**
-	 * Cleanup any state for this DB.
-	 * Called once per DB instance; there is one DB instance per client thread.
-	 */
-	public void cleanup() throws DBException
-	{
-        long ist=_measurements.getIntendedtartTimeNs();
-        long st = System.nanoTime();
-		_db.cleanup();
-        long en=System.nanoTime();
-        measure("CLEANUP",ist, st, en);
-	}
+  /**
+   * Read a record from the database. Each field/value pair from the result
+   * will be stored in a HashMap.
+   *
+   * @param table The name of the table
+   * @param key The record key of the record to read.
+   * @param fields The list of fields to read, or null for all of them
+   * @param result A HashMap of field/value pairs for the result
+   * @return The result of the operation.
+   */
+  public Status read(String table, String key, Set<String> fields,
+      HashMap<String,ByteIterator> result)
+  {
+    long ist=_measurements.getIntendedtartTimeNs();
+    long st = System.nanoTime();
+    Status res=_db.read(table,key,fields,result);
+    long en=System.nanoTime();
+    measure("READ",ist, st, en);
+    _measurements.reportStatus("READ",res);
+    return res;
+  }
 
-	/**
-	 * Read a record from the database. Each field/value pair from the result will be stored in a HashMap.
-	 *
-	 * @param table The name of the table
-	 * @param key The record key of the record to read.
-	 * @param fields The list of fields to read, or null for all of them
-	 * @param result A HashMap of field/value pairs for the result
-	 * @return The result of the operation.
-	 */
-	public Status read(String table, String key, Set<String> fields, HashMap<String,ByteIterator> result)
-	{
-	    long ist=_measurements.getIntendedtartTimeNs();
-	    long st = System.nanoTime();
-	    Status res=_db.read(table,key,fields,result);
-		long en=System.nanoTime();
-		measure("READ",ist, st, en);
-	    _measurements.reportStatus("READ",res);
-		return res;
-	}
+  /**
+   * Perform a range scan for a set of records in the database. Each
+   * field/value pair from the result will be stored in a HashMap.
+   *
+   * @param table The name of the table
+   * @param startkey The record key of the first record to read.
+   * @param recordcount The number of records to read
+   * @param fields The list of fields to read, or null for all of them
+   * @param result A Vector of HashMaps, where each HashMap is a set
+   *        field/value pairs for one record
+   * @return The result of the operation.
+   */
+  public Status scan(String table, String startkey, int recordcount,
+      Set<String> fields, Vector<HashMap<String,ByteIterator>> result)
+  {
+    long ist=_measurements.getIntendedtartTimeNs();
+    long st = System.nanoTime();
+    Status res=_db.scan(table,startkey,recordcount,fields,result);
+    long en=System.nanoTime();
+    measure("SCAN",ist, st, en);
+    _measurements.reportStatus("SCAN",res);
+    return res;
+  }
 
-	/**
-	 * Perform a range scan for a set of records in the database. Each field/value pair from the result will be stored in a HashMap.
-	 *
-	 * @param table The name of the table
-	 * @param startkey The record key of the first record to read.
-	 * @param recordcount The number of records to read
-	 * @param fields The list of fields to read, or null for all of them
-	 * @param result A Vector of HashMaps, where each HashMap is a set field/value pairs for one record
-	 * @return The result of the operation.
-	 */
-	public Status scan(String table, String startkey, int recordcount, Set<String> fields, Vector<HashMap<String,ByteIterator>> result)
-	{
-	    long ist=_measurements.getIntendedtartTimeNs();
-	    long st = System.nanoTime();
-	    Status res=_db.scan(table,startkey,recordcount,fields,result);
-		long en=System.nanoTime();
-		measure("SCAN",ist, st, en);
-	    _measurements.reportStatus("SCAN",res);
-		return res;
-	}
+  private void measure(String op, long intendedStartTimeNanos,
+      long startTimeNanos, long endTimeNanos) {
+    _measurements.measure(op, (int)((endTimeNanos-startTimeNanos)/1000));
+    _measurements.measureIntended(op,
+        (int)((endTimeNanos-intendedStartTimeNanos)/1000));
+  }
 
-    private void measure(String op, long intendedStartTimeNanos, long startTimeNanos, long endTimeNanos) {
-        _measurements.measure(op, (int)((endTimeNanos-startTimeNanos)/1000));
-	    _measurements.measureIntended(op, (int)((endTimeNanos-intendedStartTimeNanos)/1000));
-    }
-	
-	/**
-	 * Update a record in the database. Any field/value pairs in the specified values HashMap will be written into the record with the specified
-	 * record key, overwriting any existing values with the same field name.
-	 *
-	 * @param table The name of the table
-	 * @param key The record key of the record to write.
-	 * @param values A HashMap of field/value pairs to update in the record
-	 * @return The result of the operation.
-	 */
-	public Status update(String table, String key, HashMap<String,ByteIterator> values)
-	{
-	    long ist=_measurements.getIntendedtartTimeNs();
-	    long st = System.nanoTime();
-		Status res=_db.update(table,key,values);
-		long en=System.nanoTime();
-		measure("UPDATE",ist, st, en);
-		_measurements.reportStatus("UPDATE",res);
-		return res;
-	}
+  /**
+   * Update a record in the database. Any field/value pairs in the specified
+   * values HashMap will be written into the record with the specified
+   * record key, overwriting any existing values with the same field name.
+   *
+   * @param table The name of the table
+   * @param key The record key of the record to write.
+   * @param values A HashMap of field/value pairs to update in the record
+   * @return The result of the operation.
+   */
+  public Status update(String table, String key,
+      HashMap<String,ByteIterator> values)
+  {
+    long ist=_measurements.getIntendedtartTimeNs();
+    long st = System.nanoTime();
+    Status res=_db.update(table,key,values);
+    long en=System.nanoTime();
+    measure("UPDATE",ist, st, en);
+    _measurements.reportStatus("UPDATE",res);
+    return res;
+  }
 
-	/**
-	 * Insert a record in the database. Any field/value pairs in the specified values HashMap will be written into the record with the specified
-	 * record key.
-	 *
-	 * @param table The name of the table
-	 * @param key The record key of the record to insert.
-	 * @param values A HashMap of field/value pairs to insert in the record
-	 * @return The result of the operation.
-	 */
-	public Status insert(String table, String key, HashMap<String,ByteIterator> values)
-	{
-	    long ist=_measurements.getIntendedtartTimeNs();
-	    long st = System.nanoTime();
-		Status res=_db.insert(table,key,values);
-		long en=System.nanoTime();
-		measure("INSERT",ist, st, en);
-		_measurements.reportStatus("INSERT",res);
-		return res;
-	}
+  /**
+   * Insert a record in the database. Any field/value pairs in the specified
+   * values HashMap will be written into the record with the specified
+   * record key.
+   *
+   * @param table The name of the table
+   * @param key The record key of the record to insert.
+   * @param values A HashMap of field/value pairs to insert in the record
+   * @return The result of the operation.
+   */
+  public Status insert(String table, String key,
+      HashMap<String,ByteIterator> values)
+  {
+    long ist=_measurements.getIntendedtartTimeNs();
+    long st = System.nanoTime();
+    Status res=_db.insert(table,key,values);
+    long en=System.nanoTime();
+    measure("INSERT",ist, st, en);
+    _measurements.reportStatus("INSERT",res);
+    return res;
+  }
 
-	/**
-	 * Delete a record from the database. 
-	 *
-	 * @param table The name of the table
-	 * @param key The record key of the record to delete.
-	 * @return The result of the operation.
-	 */
-	public Status delete(String table, String key)
-	{
-	    long ist=_measurements.getIntendedtartTimeNs();
-	    long st = System.nanoTime();
-		Status res=_db.delete(table,key);
-		long en=System.nanoTime();
-		measure("DELETE",ist, st, en);
-		_measurements.reportStatus("DELETE",res);
-		return res;
-	}
+  /**
+   * Delete a record from the database.
+   *
+   * @param table The name of the table
+   * @param key The record key of the record to delete.
+   * @return The result of the operation.
+   */
+  public Status delete(String table, String key)
+  {
+    long ist=_measurements.getIntendedtartTimeNs();
+    long st = System.nanoTime();
+    Status res=_db.delete(table,key);
+    long en=System.nanoTime();
+    measure("DELETE",ist, st, en);
+    _measurements.reportStatus("DELETE",res);
+    return res;
+  }
 }