Java tutorial
/* * This file is part of ConfigHub. * * ConfigHub is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * ConfigHub is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with ConfigHub.If not, see <http://www.gnu.org/licenses/>. */ package com.confighub.core.store.diff; import com.confighub.core.repository.PropertyKey; import com.confighub.core.store.APersisted; import com.confighub.core.utils.Utils; import com.google.gson.JsonObject; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; import javax.persistence.*; public class PropertyKeyDiffTracker extends ADiffTracker { private static final Logger log = LogManager.getLogger(PropertyKeyDiffTracker.class); @PreRemove public void preRemove(APersisted obj) { obj.revType = APersisted.RevisionType.Delete; setSearchKey(((PropertyKey) obj).getKey()); } @PrePersist public void prePersist(APersisted obj) { obj.revType = APersisted.RevisionType.Add; } @PostPersist public void postPersist(APersisted obj) { setSearchKey(((PropertyKey) obj).getKey()); } @PostLoad public void loadOldData(APersisted obj) { if (!isTracked() || !(obj instanceof PropertyKey)) return; OriginalPropertyKey o = new OriginalPropertyKey(); PropertyKey propertyKey = (PropertyKey) obj; o.key = propertyKey.getKey(); o.readme = propertyKey.getReadme(); o.deprecated = propertyKey.isDeprecated(); o.spName = null == propertyKey.getSecurityProfile() ? null : propertyKey.getSecurityProfile().getName(); o.valueDataType = propertyKey.valueDataType; o.push = propertyKey.isPushValueEnabled(); obj.revType = APersisted.RevisionType.Modify; edits.get().put(obj.getId(), o); } @PreUpdate public void preUpdate(APersisted obj) { OriginalPropertyKey o = (OriginalPropertyKey) getIfRecorded(obj); if (null == o || !(obj instanceof PropertyKey)) return; PropertyKey propertyKey = (PropertyKey) obj; JsonObject json = new JsonObject(); if (!Utils.equal(propertyKey.getKey(), o.key)) { json.addProperty("key", o.key); markForNotification(); } if (!Utils.equal(propertyKey.getReadme(), o.readme)) json.addProperty("readme", o.readme); if (propertyKey.isDeprecated() != o.deprecated) { json.addProperty("deprecated", o.deprecated); markForNotification(); } if (propertyKey.isPushValueEnabled() != o.push) { json.addProperty("pushEnabled", o.push); markForNotification(); } String spName = null == propertyKey.getSecurityProfile() ? null : propertyKey.getSecurityProfile().getName(); if (!Utils.equal(spName, o.spName)) { json.addProperty("spName", null == o.spName ? "" : o.spName); markForNotification(); } if (propertyKey.getValueDataType() != o.valueDataType) json.addProperty("vdt", null == o.valueDataType ? PropertyKey.ValueDataType.Text.name() : o.valueDataType.name()); propertyKey.diffJson = json.toString(); setSearchKey(propertyKey.getKey()); } private static class OriginalPropertyKey extends OriginalAPersistent { String key; String readme; boolean deprecated; String spName; boolean push; PropertyKey.ValueDataType valueDataType; } }