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.ArrayList;
  import java.util.List;
  import java.util.Objects;
  
  import org.apache.asterix.common.exceptions.CompilationException;
  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.Expression;
  import org.apache.asterix.lang.common.base.IReturningStatement;
  import org.apache.asterix.lang.common.base.Statement;
  import org.apache.asterix.lang.common.expression.VariableExpr;
  import org.apache.asterix.lang.common.visitor.base.ILangVisitor;
  
  public class InsertStatement extends AbstractStatement implements IReturningStatement {
  
      private Namespace namespace;
      private String datasetName;
      private final Query query;
      private final VariableExpr var;
      private Expression returnExpression;
      private int varCounter;
  
      public InsertStatement(Namespace namespace, String datasetName, Query query, int varCounter, VariableExpr var,
              Expression returnExpression) {
          this.namespace = namespace;
          this.datasetName = datasetName;
          this.query = query;
          this.varCounter = varCounter;
          this.var = var;
          this.returnExpression = returnExpression;
      }
  
      @Override
      public Kind getKind() {
          return Statement.Kind.INSERT;
      }
  
      public Namespace getNamespace() {
          return namespace;
      }
  
      public DataverseName getDataverseName() {
          return namespace == null ? null : namespace.getDataverseName();
      }
  
      public String getDatabaseName() {
          return namespace == null ? null : namespace.getDatabaseName();
      }
  
      public void setNamespace(Namespace namespace) {
          this.namespace = namespace;
      }
  
      public String getDatasetName() {
          return datasetName;
      }
  
      public void setDatasetName(String datasetName) {
          this.datasetName = datasetName;
      }
  
      public Query getQuery() {
          return query;
      }
  
      @Override
      public int getVarCounter() {
          return varCounter;
      }
  
      @Override
      public void setVarCounter(int varCounter) {
          this.varCounter = varCounter;
      }
  
      @Override
      public List<Expression> getDirectlyEnclosedExpressions() {
          List<Expression> topLevelExpressions = new ArrayList<>();
          topLevelExpressions.add(query.getBody());
          if (returnExpression != null) {
              topLevelExpressions.add(returnExpression);
          }
          return topLevelExpressions;
      }
  
      @Override
      public boolean isTopLevel() {
          return true;
      }
  
      @Override
      public Expression getBody() {
          return query.getBody();
      }
  
      @Override
      public void setBody(Expression body) {
          query.setBody(body);
      }
  
      public VariableExpr getVar() {
          return var;
      }
  
      public Expression getReturnExpression() {
          return returnExpression;
      }
  
      public void setReturnExpression(Expression expr) {
          this.returnExpression = expr;
      }
  
      @Override
      public <R, T> R accept(ILangVisitor<R, T> visitor, T arg) throws CompilationException {
          return visitor.visit(this, arg);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(datasetName, namespace, query, varCounter, var, returnExpression);
      }
  
      @Override
      @SuppressWarnings("squid:S1067") // expressions should not be too complex
      public boolean equals(Object object) {
          if (this == object) {
              return true;
          }
          if (!(object instanceof InsertStatement)) {
              return false;
          }
          InsertStatement target = (InsertStatement) object;
          return Objects.equals(datasetName, target.datasetName) && Objects.equals(namespace, target.namespace)
                  && Objects.equals(query, target.query) && Objects.equals(returnExpression, target.returnExpression)
                  && varCounter == target.varCounter && Objects.equals(var, target.var);
      }
  
      @Override
      public byte getCategory() {
          return Category.UPDATE;
      }
  }
  