JSONPathFieldSpec.java

/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets 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 io.druid.data.input.impl;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;

public class JSONPathFieldSpec
{
  private final JSONPathFieldType type;
  private final String name;
  private final String expr;

  @JsonCreator
  public JSONPathFieldSpec(
      @JsonProperty("type") JSONPathFieldType type,
      @JsonProperty("name") String name,
      @JsonProperty("expr") String expr
  )
  {
    this.type = type;
    this.name = name;
    this.expr = expr;
  }

  @JsonProperty
  public JSONPathFieldType getType()
  {
    return type;
  }

  @JsonProperty
  public String getName()
  {
    return name;
  }

  @JsonProperty
  public String getExpr()
  {
    return expr;
  }

  @JsonCreator
  public static JSONPathFieldSpec fromString(String name)
  {
    return JSONPathFieldSpec.createRootField(name);
  }

  public static JSONPathFieldSpec createNestedField(String name, String expr)
  {
    return new JSONPathFieldSpec(JSONPathFieldType.PATH, name, expr);
  }

  public static JSONPathFieldSpec createRootField(String name)
  {
    return new JSONPathFieldSpec(JSONPathFieldType.ROOT, name, name);
  }
}