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.cassandra.cql3.constraints;
  
  import java.nio.ByteBuffer;
  import java.util.List;
  
  import org.apache.cassandra.cql3.Operator;
  import org.apache.cassandra.db.marshal.AbstractType;
  import org.apache.cassandra.db.marshal.AsciiType;
  import org.apache.cassandra.db.marshal.BytesType;
  import org.apache.cassandra.db.marshal.Int32Type;
  import org.apache.cassandra.db.marshal.UTF8Type;
  import org.apache.cassandra.utils.ByteBufferUtil;
  
  public class OctetLengthConstraint extends ConstraintFunction
  {
      private static final List<AbstractType<?>> SUPPORTED_TYPES = List.of(BytesType.instance, UTF8Type.instance, AsciiType.instance);
  
      public OctetLengthConstraint(List<String> args)
      {
          super("OCTET_LENGTH", args);
      }
  
      @Override
      public void internalEvaluate(AbstractType<?> valueType, Operator relationType, String term, ByteBuffer columnValue)
      {
          int valueLength = columnValue.remaining();
          int sizeConstraint = Integer.parseInt(term);
  
          ByteBuffer leftOperand = ByteBufferUtil.bytes(valueLength);
          ByteBuffer rightOperand = ByteBufferUtil.bytes(sizeConstraint);
  
          if (!relationType.isSatisfiedBy(Int32Type.instance, leftOperand, rightOperand))
              throw new ConstraintViolationException("Column value does not satisfy value constraint for column '" + columnName + "'. "
                                                     + "It has a length of " + valueLength + " and it should be should be "
                                                     + relationType + ' ' + term);
      }
  
      @Override
      public List<Operator> getSupportedOperators()
      {
          return DEFAULT_FUNCTION_OPERATORS;
      }
  
      @Override
      public List<AbstractType<?>> getSupportedTypes()
      {
          return SUPPORTED_TYPES;
      }
  
      @Override
      public boolean equals(Object o)
      {
          if (this == o)
              return true;
  
          if (!(o instanceof OctetLengthConstraint))
              return false;
  
          OctetLengthConstraint other = (OctetLengthConstraint) o;
  
          return columnName.equals(other.columnName);
      }
  }
  