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.dse.driver.internal.core.metadata.schema.parsing;
  
  import com.datastax.dse.driver.api.core.metadata.schema.DseFunctionMetadata;
  import com.datastax.dse.driver.internal.core.metadata.schema.DefaultDseFunctionMetadata;
  import com.datastax.oss.driver.api.core.CqlIdentifier;
  import com.datastax.oss.driver.api.core.metadata.schema.FunctionMetadata;
  import com.datastax.oss.driver.api.core.type.UserDefinedType;
  import com.datastax.oss.driver.internal.core.adminrequest.AdminRow;
  import com.datastax.oss.driver.internal.core.context.InternalDriverContext;
  import com.datastax.oss.driver.internal.core.metadata.schema.parsing.DataTypeParser;
  import com.datastax.oss.driver.internal.core.metadata.schema.parsing.FunctionParser;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  import java.util.stream.Collectors;
  import net.jcip.annotations.ThreadSafe;
  
  @ThreadSafe
  public class DseFunctionParser {
  
    private final FunctionParser functionParser;
  
    public DseFunctionParser(DataTypeParser dataTypeParser, InternalDriverContext context) {
      this.functionParser = new FunctionParser(dataTypeParser, context);
    }
  
    public DseFunctionMetadata parseFunction(
        AdminRow row,
        CqlIdentifier keyspaceId,
        Map<CqlIdentifier, UserDefinedType> userDefinedTypes) {
      FunctionMetadata function = functionParser.parseFunction(row, keyspaceId, userDefinedTypes);
      // parse the DSE extended columns
      final Boolean deterministic =
          row.contains("deterministic") ? row.getBoolean("deterministic") : null;
      final Boolean monotonic = row.contains("monotonic") ? row.getBoolean("monotonic") : null;
      // stream the list of strings into a list of CqlIdentifiers
      final List<CqlIdentifier> monotonicOn =
          row.contains("monotonic_on")
              ? row.getListOfString("monotonic_on").stream()
                  .map(CqlIdentifier::fromInternal)
                  .collect(Collectors.toList())
              : Collections.emptyList();
  
      return new DefaultDseFunctionMetadata(
          function.getKeyspace(),
          function.getSignature(),
          function.getParameterNames(),
          function.getBody(),
          function.isCalledOnNullInput(),
          function.getLanguage(),
          function.getReturnType(),
          deterministic,
          monotonic,
          monotonicOn);
    }
  }
  