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.beam.sdk.schemas.logicaltypes;
  
  import org.apache.beam.model.pipeline.v1.RunnerApi;
  import org.apache.beam.model.pipeline.v1.SchemaApi;
  import org.apache.beam.sdk.schemas.Schema;
  import org.apache.beam.sdk.schemas.Schema.LogicalType;
  import org.apache.beam.sdk.util.PythonCallableSource;
  import org.checkerframework.checker.nullness.qual.NonNull;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  /** A logical type for PythonCallableSource objects. */
  public class PythonCallable implements LogicalType<PythonCallableSource, String> {
    public static final String IDENTIFIER =
        SchemaApi.LogicalTypes.Enum.PYTHON_CALLABLE
            .getValueDescriptor()
            .getOptions()
            .getExtension(RunnerApi.beamUrn);
  
    @Override
    public String getIdentifier() {
      return IDENTIFIER;
    }
  
    @Override
    public Schema.@Nullable FieldType getArgumentType() {
      return null;
    }
  
    @Override
    public Schema.FieldType getBaseType() {
      return Schema.FieldType.STRING;
    }
  
    @Override
    public @NonNull String toBaseType(@NonNull PythonCallableSource input) {
      return input.getPythonCallableCode();
    }
  
    @Override
    public @NonNull PythonCallableSource toInputType(@NonNull String base) {
      return PythonCallableSource.of(base);
    }
  }
  