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/*
 * Copyright (c) 2010-2015 Pivotal Software, 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.gemstone.gemfire.internal.jta;

import com.gemstone.gemfire.i18n.LogWriterI18n;
import com.gemstone.gemfire.internal.LogWriterImpl;
import com.gemstone.gemfire.internal.PureLogWriter;

/**
 * Contains Utility functions for use by JTA
 * 
 * @author Mitul D Bid
 */
public class TransactionUtils {

  private static LogWriterI18n dslogWriter = null;
  private static LogWriterI18n purelogWriter = null;

  /**
   * Returns the logWriter associated with the existing DistributedSystem. If
   * DS is null then the PureLogWriter is returned
   * 
   * @return LogWriterI18n
   */
  public static LogWriterI18n getLogWriterI18n() {
    if (dslogWriter != null) {
      return dslogWriter;
    } else if (purelogWriter != null) {
      return purelogWriter;
    } else {
      purelogWriter = new PureLogWriter(LogWriterImpl.SEVERE_LEVEL);
      return purelogWriter;
    }
  }

  /**
   * To be used by mapTransaction method of JNDIInvoker to set the dsLogwriter
   * before the binding of the datasources
   * 
   * @param logWriter
   */
  public static void setLogWriter(LogWriterI18n logWriter) {
    dslogWriter = logWriter;
  }
}