sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/logicaltypes/PassThroughLogicalType.java

/*
 * 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.sdk.schemas.Schema.FieldType;
import org.apache.beam.sdk.schemas.Schema.LogicalType;

/** A base class for LogicalTypes that use the same Java type as the underlying base type. */
public abstract class PassThroughLogicalType<T> implements LogicalType<T, T> {
  private final String identifier;
  private final FieldType argumentType;
  private final Object argument;
  private final FieldType fieldType;

  protected PassThroughLogicalType(
      String identifier, FieldType argumentType, Object argument, FieldType fieldType) {
    this.identifier = identifier;
    this.argumentType = argumentType;
    this.argument = argument;
    this.fieldType = fieldType;
  }

  @Override
  public String getIdentifier() {
    return identifier;
  }

  @Override
  public FieldType getArgumentType() {
    return argumentType;
  }

  @Override
  @SuppressWarnings("TypeParameterUnusedInFormals")
  public <ArgumentT> ArgumentT getArgument() {
    return (ArgumentT) argument;
  }

  @Override
  public FieldType getBaseType() {
    return fieldType;
  }

  @Override
  public T toBaseType(T input) {
    return input;
  }

  @Override
  public T toInputType(T base) {
    return base;
  }
}