org.argeo.cms.lib.json/src/org/argeo/cms/acr/json/AcrJsonUtils.java

   1 package org.argeo.cms.acr.json;
   2
   3 import javax.xml.namespace.QName;
   4
   5 import org.argeo.api.acr.Content;
   6 import org.argeo.api.acr.NamespaceUtils;
   7 import org.argeo.api.acr.QNamed;
   8
   9 import jakarta.json.stream.JsonGenerator;
  10
  11 /** Utilities around ACR and the JSON format. */
  12 public class AcrJsonUtils {
  13         public static void writeAttr(JsonGenerator g, Content content, String attr) {
  14                 writeAttr(g, content, NamespaceUtils.parsePrefixedName(attr));
  15         }
  16
  17         public static void writeAttr(JsonGenerator g, Content content, QNamed attr) {
  18                 writeAttr(g, content, attr.qName());
  19         }
  20
  21         public static void writeAttr(JsonGenerator g, Content content, QName attr) {
  22                 // String value = content.attr(attr);
  23                 Object value = content.get(attr);
  24                 if (value != null) {
  25                         // TODO specify NamespaceContext
  26                         String key = NamespaceUtils.toPrefixedName(attr);
  27                         if (value instanceof Double v)
  28                                 g.write(key, v);
  29                         else if (value instanceof Long v)
  30                                 g.write(key, v);
  31                         else if (value instanceof Integer v)
  32                                 g.write(key, v);
  33                         else if (value instanceof Boolean v)
  34                                 g.write(key, v);
  35                         else
  36                                 g.write(key, value.toString());
  37                 }
  38         }
  39
  40         /** singleton */
  41         private AcrJsonUtils() {
  42         }
  43 }