content: /*
   * 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.
   */
  package org.apache.calcite.avatica;
  
  import java.sql.SQLClientInfoException;
  import java.sql.SQLException;
  import java.sql.SQLFeatureNotSupportedException;
  
  /**
   * Utility methods, mainly concerning error-handling.
   */
  public class Helper {
    public static final Helper INSTANCE = new Helper();
  
    private Helper() {
    }
  
    public RuntimeException todo() {
      return new RuntimeException("todo: implement this method");
    }
  
    public RuntimeException wrap(String message, Exception e) {
      return new RuntimeException(message, e);
    }
  
    public SQLException createException(String message, Exception e) {
      return createException(message, null, e);
    }
  
    public SQLException createException(String message, String sql, Exception e) {
      if (e instanceof AvaticaClientRuntimeException) {
        // The AvaticaClientRuntimeException contains extra information about what/why
        // the exception was thrown that we can pass back to the user.
        AvaticaClientRuntimeException rte = (AvaticaClientRuntimeException) e;
        String serverAddress = null;
        if (null != rte.getRpcMetadata()) {
          serverAddress = rte.getRpcMetadata().serverAddress;
        }
        return new AvaticaSqlException(message, rte.getSqlState(), rte.getErrorCode(),
            rte.getServerExceptions(), serverAddress);
      }
      return new SQLException(message, e);
    }
  
    public SQLException createException(String message) {
      return new SQLException(message);
    }
  
    public SQLException toSQLException(SQLException exception) {
      return exception;
    }
  
    public SQLException closed() {
      return createException("Connection closed");
    }
  
    public SQLException unsupported() {
      return new SQLFeatureNotSupportedException();
    }
  
    public SQLClientInfoException clientInfo() {
      return new SQLClientInfoException();
    }
  }
  
  // End Helper.java
  