001package org.hl7.fhir.r5.openapi;
002
003/*
004  Copyright (c) 2011+, HL7, Inc.
005  All rights reserved.
006  
007  Redistribution and use in source and binary forms, with or without modification, 
008  are permitted provided that the following conditions are met:
009    
010   * Redistributions of source code must retain the above copyright notice, this 
011     list of conditions and the following disclaimer.
012   * Redistributions in binary form must reproduce the above copyright notice, 
013     this list of conditions and the following disclaimer in the documentation 
014     and/or other materials provided with the distribution.
015   * Neither the name of HL7 nor the names of its contributors may be used to 
016     endorse or promote products derived from this software without specific 
017     prior written permission.
018  
019  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
020  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
021  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
022  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
023  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
024  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
025  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
026  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
027  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
028  POSSIBILITY OF SUCH DAMAGE.
029  
030 */
031
032
033
034import com.google.gson.JsonArray;
035import com.google.gson.JsonElement;
036import com.google.gson.JsonObject;
037
038public class BaseWriter {
039
040  protected JsonObject object;
041
042  public BaseWriter(JsonObject object) {
043    super();
044    this.object = object;
045  }
046
047  protected JsonObject ensureObject(String name) {
048    JsonObject child = object.getAsJsonObject(name);
049    if (child == null) {
050      child = new JsonObject();
051      object.add(name, child);
052    }
053    return child;
054  }
055  
056  protected JsonObject ensureArrayObject(String arrayName, String propertyName, String value) {
057    JsonArray arr = forceArray(arrayName);
058    for (JsonElement e : arr) {
059      String s = e.getAsJsonObject().get(propertyName).getAsString();
060      if (value.equals(s))
061        return e.getAsJsonObject();
062    }
063    JsonObject e = new JsonObject();
064    arr.add(e);
065    e.addProperty(propertyName, value);
066    return e;
067  }
068
069  protected JsonArray forceArray(String arrayName) {
070    JsonArray arr = object.getAsJsonArray(arrayName);
071    if (arr == null) {
072      arr = new JsonArray();
073      object.add(arrayName, arr);
074    }
075    return arr;
076  }
077  
078  protected JsonObject forceArrayObject(String arrayName) {
079    JsonArray arr = object.getAsJsonArray(arrayName);
080    if (arr == null) {
081      arr = new JsonArray();
082      object.add(arrayName, arr);
083    }
084    JsonObject obj = new JsonObject();
085    arr.add(obj);
086    return obj;
087  }
088  
089
090  protected JsonObject ensureMapObject(String mapName, String value) {
091    JsonObject map = object.getAsJsonObject(mapName);
092    if (map == null) {
093      map = new JsonObject();
094      object.add(mapName, map);
095    }
096    if (map.has(value))
097      return map.getAsJsonObject(value);
098    JsonObject e = new JsonObject();
099    map.add(value, e);
100    return e;
101  }
102  
103
104  protected JsonObject ensureMapObject(String value) {
105    if (object.has(value))
106      return object.getAsJsonObject(value);
107    JsonObject e = new JsonObject();
108    object.add(value, e);
109    return e;
110  }
111  
112}