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.common.exceptions;
  
  import java.util.Collection;
  import java.util.LinkedHashSet;
  import java.util.Set;
  
  import org.apache.hyracks.api.exceptions.IWarningCollector;
  import org.apache.hyracks.api.exceptions.Warning;
  import org.apache.hyracks.util.annotations.NotThreadSafe;
  
  /**
   * A warning collector that collects warnings up to {@link Long#MAX_VALUE} by default.
   */
  @NotThreadSafe
  public final class WarningCollector implements IWarningCollector {
  
      private final Set<Warning> warnings = new LinkedHashSet<>();
      private long maxWarnings = Long.MAX_VALUE;
      private long totalWarningsCount;
  
      public void clear() {
          warnings.clear();
          totalWarningsCount = 0;
      }
  
      @Override
      public void warn(Warning warning) {
          this.warnings.add(warning);
      }
  
      @Override
      public boolean shouldWarn() {
          return totalWarningsCount < Long.MAX_VALUE && totalWarningsCount++ < maxWarnings;
      }
  
      @Override
      public long getTotalWarningsCount() {
          return totalWarningsCount;
      }
  
      public void getWarnings(Collection<? super Warning> outWarnings, long maxWarnings) {
          long i = 0;
          for (Warning warning : warnings) {
              if (i >= maxWarnings) {
                  break;
              }
              outWarnings.add(warning);
              i++;
          }
      }
  
      public void getWarnings(IWarningCollector outWarningCollector) {
          WarningUtil.mergeWarnings(warnings, outWarningCollector);
      }
  
      public void setMaxWarnings(long maxWarnings) {
          this.maxWarnings = maxWarnings;
      }
  }
  