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 com.aliyun.odps.table;
  
  import java.io.Serializable;
  import java.util.Objects;
  
  import com.aliyun.odps.table.utils.Preconditions;
  import com.aliyun.odps.utils.NameSpaceSchemaUtils;
  
  /**
   * Identifier of table.
   */
  public class TableIdentifier implements Serializable {
  
      private final String project;
      private final String schema;
      private final String table;
  
      public static TableIdentifier of(String project, String table) {
          return new TableIdentifier(project, table);
      }
  
      public static TableIdentifier of(String project, String schema, String table) {
          return new TableIdentifier(project, schema, table);
      }
  
      public TableIdentifier(String project, String table) {
          this(project, "default", table);
      }
  
      public TableIdentifier(String project, String schema, String table) {
          Preconditions.checkString(project, "Identifier project cannot be null");
          Preconditions.checkString(table, "Identifier table cannot be null");
          this.project = project;
          this.schema = schema;
          this.table = table;
      }
  
      public String getProject() {
          return project;
      }
  
      public String getSchema() {
          return schema;
      }
  
      public String getTable() {
          return table;
      }
  
      @Override
      public String toString() {
          return NameSpaceSchemaUtils.getFullName(project, schema, table);
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
  
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
  
          TableIdentifier that = (TableIdentifier) o;
          return Objects.equals(project, that.project) && Objects.equals(schema, that.schema)
                 && Objects.equals(table, that.table);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(project, schema, table);
      }
  }
  