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.asterix.lang.common.statement;
  
  import java.util.List;
  
  import org.apache.asterix.common.exceptions.CompilationException;
  import org.apache.asterix.common.functions.FunctionSignature;
  import org.apache.asterix.common.metadata.DataverseName;
  import org.apache.asterix.common.metadata.Namespace;
  import org.apache.asterix.lang.common.base.AbstractStatement;
  import org.apache.asterix.lang.common.base.Statement;
  import org.apache.asterix.lang.common.struct.Identifier;
  import org.apache.asterix.lang.common.visitor.base.ILangVisitor;
  import org.apache.asterix.metadata.feeds.BuiltinFeedPolicies;
  import org.apache.hyracks.algebricks.common.utils.Pair;
  
  public class ConnectFeedStatement extends AbstractStatement {
  
      private final Namespace namespace;
      private final Identifier datasetName;
      private final String feedName;
      private final String policy;
      private final String whereClauseBody;
      private final int varCounter;
      private final List<FunctionSignature> appliedFunctions;
  
      public ConnectFeedStatement(Pair<Namespace, Identifier> feedNameCmp, Pair<Namespace, Identifier> datasetNameCmp,
              List<FunctionSignature> appliedFunctions, String policy, String whereClauseBody, int varCounter) {
          if (feedNameCmp.first != null && datasetNameCmp.first != null
                  && !feedNameCmp.first.equals(datasetNameCmp.first)) {
              throw new IllegalArgumentException("Dataverse for source feed and target dataset do not match");
          }
          this.namespace = feedNameCmp.first != null ? feedNameCmp.first : datasetNameCmp.first;
          this.datasetName = datasetNameCmp.second;
          this.feedName = feedNameCmp.second.getValue();
          this.policy = policy != null ? policy : BuiltinFeedPolicies.DEFAULT_POLICY.getPolicyName();
          this.whereClauseBody = whereClauseBody;
          this.varCounter = varCounter;
          this.appliedFunctions = appliedFunctions;
      }
  
      public Namespace getNamespace() {
          return namespace;
      }
  
      public DataverseName getDataverseName() {
          return namespace == null ? null : namespace.getDataverseName();
      }
  
      public Identifier getDatasetName() {
          return datasetName;
      }
  
      public int getVarCounter() {
          return varCounter;
      }
  
      public String getWhereClauseBody() {
          return whereClauseBody;
      }
  
      @Override
      public Kind getKind() {
          return Statement.Kind.CONNECT_FEED;
      }
  
      public String getPolicy() {
          return policy;
      }
  
      @Override
      public <R, T> R accept(ILangVisitor<R, T> visitor, T arg) throws CompilationException {
          return visitor.visit(this, arg);
      }
  
      public String getFeedName() {
          return feedName;
      }
  
      public List<FunctionSignature> getAppliedFunctions() {
          return appliedFunctions;
      }
  
      @Override
      public byte getCategory() {
          return Category.UPDATE;
      }
  
  }
  