Java tutorial
/** * Copyright 2005-2014 Red Hat, Inc. * * Red Hat 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.fabric8.insight.activemq.audit; import java.text.SimpleDateFormat; import java.util.Collection; import java.util.Date; import java.util.Map; import com.fasterxml.jackson.databind.ObjectMapper; public final class ScriptUtils { private static final SimpleDateFormat format; private static final ObjectMapper mapper; static { format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSX"); mapper = new ObjectMapper(); mapper.getSerializationConfig().with(format); } public static String toIso(Date d) { return format.format(d); } public static String toJson(Object o) { try { if (o instanceof Collection) { StringBuilder sb = new StringBuilder(); sb.append("["); for (Object c : (Collection) o) { if (sb.length() > 1) { sb.append(","); } sb.append(toJson(c)); } sb.append("]"); return sb.toString(); } else if (o instanceof Map) { StringBuilder sb = new StringBuilder(); sb.append("{"); for (Map.Entry<Object, Object> e : ((Map<Object, Object>) o).entrySet()) { if (sb.length() > 1) { sb.append(","); } sb.append(toJson(e.getKey().toString())); sb.append(":"); sb.append(toJson(e.getValue())); } sb.append("}"); return sb.toString(); } else if (o == null) { return "null"; } else if (o instanceof Date) { return "\"" + toIso((Date) o) + "\""; } else { return mapper.writeValueAsString(o.toString()); } } catch (Exception e) { throw new IllegalArgumentException("Could not serialize " + o, e); } } public static Map parseJson(String str) { try { return mapper.readValue(str, Map.class); } catch (Exception e) { throw new IllegalArgumentException("Could not deserialize " + str, e); } } }