/*
    * 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.shardingsphere.sqlfederation.executor.context;
  
  import lombok.Getter;
  import lombok.RequiredArgsConstructor;
  import org.apache.calcite.DataContext;
  import org.apache.calcite.adapter.java.JavaTypeFactory;
  import org.apache.calcite.linq4j.QueryProvider;
  import org.apache.calcite.schema.SchemaPlus;
  import org.apache.calcite.sql.validate.SqlValidator;
  import org.apache.calcite.sql2rel.SqlToRelConverter;
  
  import java.util.Map;
  
  /**
   * SQL federation bind context.
   */
  @RequiredArgsConstructor
  public final class SQLFederationBindContext implements DataContext {
      
      private final SqlValidator validator;
      
      private final SqlToRelConverter converter;
      
      @Getter
      private final Map<String, Object> parameters;
      
      @Override
      public SchemaPlus getRootSchema() {
          return validator.getCatalogReader().getRootSchema().plus();
      }
      
      @Override
      public JavaTypeFactory getTypeFactory() {
          return (JavaTypeFactory) converter.getCluster().getTypeFactory();
      }
      
      @Override
      public QueryProvider getQueryProvider() {
          return null;
      }
      
      @Override
      public Object get(final String name) {
          return parameters.get(name);
      }
  }