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.datastax.oss.driver.api.core.cql;
  
  import com.datastax.oss.driver.api.core.CqlIdentifier;
  import com.datastax.oss.driver.internal.core.cql.DefaultBatchStatement;
  import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableList;
  import com.datastax.oss.driver.shaded.guava.common.collect.Iterables;
  import edu.umd.cs.findbugs.annotations.NonNull;
  import edu.umd.cs.findbugs.annotations.Nullable;
  import java.util.Arrays;
  import net.jcip.annotations.NotThreadSafe;
  
  /**
   * A builder to create a batch statement.
   *
   * <p>This class is mutable and not thread-safe.
   */
  @NotThreadSafe
  public class BatchStatementBuilder extends StatementBuilder<BatchStatementBuilder, BatchStatement> {
  
    @NonNull private BatchType batchType;
    @Nullable private CqlIdentifier keyspace;
    @NonNull private ImmutableList.Builder<BatchableStatement<?>> statementsBuilder;
    private int statementsCount;
  
    public BatchStatementBuilder(@NonNull BatchType batchType) {
      this.batchType = batchType;
      this.statementsBuilder = ImmutableList.builder();
    }
  
    public BatchStatementBuilder(@NonNull BatchStatement template) {
      super(template);
      this.batchType = template.getBatchType();
      this.statementsBuilder = ImmutableList.<BatchableStatement<?>>builder().addAll(template);
      this.statementsCount = template.size();
    }
  
    /**
     * Sets the CQL keyspace to execute this batch in.
     *
     * @return this builder; never {@code null}.
     * @see BatchStatement#getKeyspace()
     */
    @NonNull
    public BatchStatementBuilder setKeyspace(@NonNull CqlIdentifier keyspace) {
      this.keyspace = keyspace;
      return this;
    }
  
    /**
     * Sets the CQL keyspace to execute this batch in. Shortcut for {@link #setKeyspace(CqlIdentifier)
     * setKeyspace(CqlIdentifier.fromCql(keyspaceName))}.
     *
     * @return this builder; never {@code null}.
     */
    @NonNull
    public BatchStatementBuilder setKeyspace(@NonNull String keyspaceName) {
      return setKeyspace(CqlIdentifier.fromCql(keyspaceName));
    }
  
    /**
     * Adds a new statement to the batch.
     *
     * @return this builder; never {@code null}.
     * @see BatchStatement#add(BatchableStatement)
     */
    @NonNull
    public BatchStatementBuilder addStatement(@NonNull BatchableStatement<?> statement) {
      if (statementsCount >= 0xFFFF) {
        throw new IllegalStateException(
            "Batch statement cannot contain more than " + 0xFFFF + " statements.");
      }
      statementsCount += 1;
      statementsBuilder.add(statement);
      return this;
    }
  
    /**
     * Adds new statements to the batch.
     *
     * @return this builder; never {@code null}.
     * @see BatchStatement#addAll(Iterable)
     */
    @NonNull
    public BatchStatementBuilder addStatements(@NonNull Iterable<BatchableStatement<?>> statements) {
      int delta = Iterables.size(statements);
      if (statementsCount + delta > 0xFFFF) {
        throw new IllegalStateException(
            "Batch statement cannot contain more than " + 0xFFFF + " statements.");
      }
      statementsCount += delta;
      statementsBuilder.addAll(statements);
      return this;
    }
  
    /**
     * Adds new statements to the batch.
     *
     * @return this builder; never {@code null}.
     * @see BatchStatement#addAll(BatchableStatement[])
     */
    @NonNull
    public BatchStatementBuilder addStatements(@NonNull BatchableStatement<?>... statements) {
      return addStatements(Arrays.asList(statements));
    }
  
    /**
     * Clears all the statements in this batch.
     *
     * @return this builder; never {@code null}.
     */
    @NonNull
    public BatchStatementBuilder clearStatements() {
      statementsBuilder = ImmutableList.builder();
      statementsCount = 0;
      return this;
    }
  
    /** @return a newly-allocated {@linkplain BatchStatement batch}; never {@code null}.. */
    @Override
    @NonNull
    public BatchStatement build() {
      return new DefaultBatchStatement(
          batchType,
          statementsBuilder.build(),
          executionProfileName,
          executionProfile,
          keyspace,
          routingKeyspace,
          routingKey,
          routingToken,
          buildCustomPayload(),
          idempotent,
          tracing,
          timestamp,
          pagingState,
          pageSize,
          consistencyLevel,
          serialConsistencyLevel,
          timeout,
          node,
          nowInSeconds);
    }
  
    public int getStatementsCount() {
      return this.statementsCount;
    }
  }
  