001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.juneau.jsonschema;
018
019import static org.apache.juneau.common.utils.StringUtils.*;
020import static org.apache.juneau.common.utils.Utils.*;
021import static org.apache.juneau.internal.ClassUtils.*;
022
023import java.util.*;
024
025import org.apache.juneau.collections.*;
026import org.apache.juneau.common.utils.*;
027import org.apache.juneau.parser.*;
028
029/**
030 * Utilities for working with the schema annotations.
031 *
032 * <h5 class='section'>See Also:</h5><ul>
033 *    <li class='link'><a class="doclink" href="https://juneau.apache.org/docs/topics/JsonSchemaDetails">JSON-Schema Support</a>
034 * </ul>
035 */
036public class SchemaUtils {
037
038   /**
039    * Concatenates and parses a string array as a JSON object.
040    *
041    * @param ss The array to concatenate and parse.
042    * @return The parsed contents.
043    * @throws ParseException Invalid JSON encountered.
044    */
045   public static JsonMap parseMap(String[] ss) throws ParseException {
046      if (ss.length == 0)
047         return null;
048      String s = joinnl(ss);
049      if (s.isEmpty())
050         return null;
051      if (! isJsonObject(s, true))
052         s = "{" + s + "}";
053      return JsonMap.ofJson(s);
054   }
055
056   /**
057    * Parses a generic object as JSON and converts it to an {@link JsonMap}.
058    *
059    * @param o The object to convert.
060    * @return The parsed contents.
061    * @throws ParseException Invalid JSON encountered.
062    */
063   public static JsonMap parseMap(Object o) throws ParseException {
064      if (o == null)
065         return null;
066      if (o instanceof String[])
067         o = joinnl((String[])o);
068      if (o instanceof String) {
069         String s = o.toString();
070         if (s.isEmpty())
071            return null;
072         if ("IGNORE".equalsIgnoreCase(s))
073            return JsonMap.of("ignore", true);
074         if (! isJsonObject(s, true))
075            s = "{" + s + "}";
076         return JsonMap.ofJson(s);
077      }
078      if (o instanceof JsonMap)
079         return (JsonMap)o;
080      throw new ParseException("Unexpected data type ''{0}''.  Expected JsonMap or String.", className(o));
081   }
082
083   /**
084    * Concatenates and parses a string array as JSON array or comma-delimited list.
085    *
086    * @param ss The array to concatenate and parse.
087    * @return The parsed contents.
088    * @throws ParseException Invalid JSON encountered.
089    */
090   public static Set<String> parseSet(String[] ss) throws ParseException {
091      if (ss.length == 0)
092         return null;
093      String s = joinnl(ss);
094      if (s.isEmpty())
095         return null;
096      Set<String> set = set();
097      JsonList.ofJsonOrCdl(s).forEach(x -> set.add(x.toString()));
098      return set;
099   }
100
101   /**
102    * Joins an array of strings with newlines.
103    *
104    * @param s The array to join.
105    * @return A new joined string.
106    */
107   public static String joinnl(String[]...s) {
108      for (String[] ss : s) {
109         if (ss.length != 0)
110            return Utils.joinnl(ss).trim();
111      }
112      return "";
113   }
114}