Java tutorial
/** * Copyright 2017 Hortonworks. * * Licensed 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 com.hortonworks.streamline.streams.catalog; import com.fasterxml.jackson.annotation.JsonIgnore; import com.fasterxml.jackson.annotation.JsonInclude; import com.fasterxml.jackson.annotation.JsonProperty; import com.fasterxml.jackson.databind.ObjectMapper; import com.hortonworks.streamline.common.Config; import com.hortonworks.registries.common.Schema; import com.hortonworks.streamline.storage.annotation.StorableEntity; import com.hortonworks.streamline.storage.PrimaryKey; import com.hortonworks.streamline.storage.catalog.AbstractStorable; import org.apache.commons.lang3.StringUtils; import java.util.HashMap; import java.util.Map; @StorableEntity public class TopologyComponent extends AbstractStorable { public static final String NAMESPACE = "topology_component"; public static final String ID = "id"; public static final String VERSIONID = "versionId"; public static final String TOPOLOGYID = "topologyId"; public static final String TOPOLOGY_COMPONENT_BUNDLE_ID = "topologyComponentBundleId"; public static final String NAME = "name"; public static final String DESCRIPTION = "description"; public static final String CONFIG = "config"; public static final String CONFIG_DATA = "configData"; private Long id; private Long topologyId = -1L; private Long topologyComponentBundleId = -1L; private Long versionId = -1L; private String name = StringUtils.EMPTY; private String description = StringUtils.EMPTY; private Config config; // this is not saved in storage but REST apis includes version timestamp here private Long versionTimestamp; public TopologyComponent() { } public TopologyComponent(TopologyComponent other) { if (other != null) { setId(other.getId()); setTopologyId(other.getTopologyId()); setTopologyComponentBundleId(other.getTopologyComponentBundleId()); setVersionId(other.getVersionId()); setName(other.getName()); setDescription(other.getDescription()); setConfig(new Config(other.getConfig())); setVersionTimestamp(other.getVersionTimestamp()); } } @JsonIgnore @Override public PrimaryKey getPrimaryKey() { Map<Schema.Field, Object> fieldToObjectMap = new HashMap<>(); fieldToObjectMap.put(new Schema.Field(ID, Schema.Type.LONG), this.id); fieldToObjectMap.put(new Schema.Field(VERSIONID, Schema.Type.LONG), this.versionId); return new PrimaryKey(fieldToObjectMap); } @Override public String getNameSpace() { return NAMESPACE; } @JsonIgnore @Override public Schema getSchema() { return Schema.of(Schema.Field.of(ID, Schema.Type.LONG), Schema.Field.of(VERSIONID, Schema.Type.LONG), Schema.Field.of(TOPOLOGYID, Schema.Type.LONG), Schema.Field.of(TOPOLOGY_COMPONENT_BUNDLE_ID, Schema.Type.LONG), Schema.Field.of(NAME, Schema.Type.STRING), Schema.Field.of(DESCRIPTION, Schema.Type.STRING), Schema.Field.of(CONFIG_DATA, Schema.Type.STRING)); } @Override public Long getId() { return id; } @Override public void setId(Long id) { this.id = id; } public Long getVersionId() { return versionId; } public void setVersionId(Long versionId) { this.versionId = versionId; } public Long getTopologyId() { return topologyId; } public void setTopologyId(Long topologyId) { this.topologyId = topologyId; } public Long getTopologyComponentBundleId() { return topologyComponentBundleId; } public void setTopologyComponentBundleId(Long topologyComponentBundleId) { this.topologyComponentBundleId = topologyComponentBundleId; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } public Config getConfig() { return config; } public void setConfig(Config config) { this.config = config; } @JsonIgnore public String getConfigData() throws Exception { if (config != null) { ObjectMapper mapper = new ObjectMapper(); return mapper.writeValueAsString(config); } return ""; } @JsonIgnore public void setConfigData(String configData) throws Exception { if (!StringUtils.isEmpty(configData)) { ObjectMapper mapper = new ObjectMapper(); config = mapper.readValue(configData, Config.class); } } @Override public Map<String, Object> toMap() { Map<String, Object> map = super.toMap(); map.remove(CONFIG); try { map.put(CONFIG_DATA, getConfigData()); } catch (Exception e) { throw new RuntimeException(e); } return map; } @JsonInclude(JsonInclude.Include.NON_NULL) @JsonProperty("timestamp") public Long getVersionTimestamp() { return versionTimestamp; } @JsonInclude(JsonInclude.Include.NON_NULL) @JsonProperty("timestamp") public void setVersionTimestamp(Long timestamp) { this.versionTimestamp = timestamp; } @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; TopologyComponent that = (TopologyComponent) o; if (id != null ? !id.equals(that.id) : that.id != null) return false; return versionId != null ? versionId.equals(that.versionId) : that.versionId == null; } @Override public int hashCode() { int result = id != null ? id.hashCode() : 0; result = 31 * result + (versionId != null ? versionId.hashCode() : 0); return result; } }