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StreamSets Data Collector API

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/*
 * Copyright contributors to the StreamSets project
 * StreamSets Inc., an IBM Company 2024
 *
 * Licensed 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.streamsets.pipeline.api.ext.json;

import com.streamsets.pipeline.api.ext.json.delegate.ClassDelegate;
import com.streamsets.pipeline.api.ext.json.delegate.LocalDateTimeDelegate;
import com.streamsets.pipeline.api.ext.json.delegate.ZonedDateTimeDelegate;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
public @interface JsonRule {

  Strategy strategy() default Strategy.BUILTIN;

  Format format() default Format.NONE;

  String pattern() default "";

  JsonRuleParameter[] parameters() default {};

  Class delegate() default JsonDelegate.class;

  enum Strategy {

    BUILTIN(),
    DELEGATED();

  }

  enum Format {

    NONE(null),
    CLASS(ClassDelegate.class),
    LOCAL_DATE_TIME(LocalDateTimeDelegate.class),
    ZONED_DATE_TIME(ZonedDateTimeDelegate.class);

    private Class delegate;

    Format(Class delegate) {
      this.delegate = delegate;
    }

    public Class delegate() {
      return this.delegate;
    }
  }

}