Java tutorial
/*- * ============LICENSE_START======================================================= * SDC * ================================================================================ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. * ================================================================================ * 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. * ============LICENSE_END========================================================= */ package org.openecomp.sdc.be.model.tosca.converters; import java.io.StringReader; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; import java.util.Map.Entry; import java.util.Set; import org.openecomp.sdc.be.config.BeEcompErrorManager; import org.openecomp.sdc.be.model.DataTypeDefinition; import org.openecomp.sdc.be.model.PropertyDefinition; import org.openecomp.sdc.be.model.tosca.ToscaPropertyType; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.google.gson.JsonArray; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import com.google.gson.JsonParseException; import com.google.gson.JsonParser; import com.google.gson.JsonSyntaxException; import com.google.gson.stream.JsonReader; public class ToscaListValueConverter extends ToscaValueBaseConverter implements ToscaValueConverter { private static ToscaListValueConverter listConverter = new ToscaListValueConverter(); private JsonParser jsonParser = new JsonParser(); private static Logger log = LoggerFactory.getLogger(ToscaListValueConverter.class.getName()); public static ToscaListValueConverter getInstance() { return listConverter; } private ToscaListValueConverter() { } @Override public Object convertToToscaValue(String value, String innerType, Map<String, DataTypeDefinition> dataTypes) { if (value == null) { return null; } try { ToscaPropertyType innerToscaType = ToscaPropertyType.isValidType(innerType); ToscaValueConverter innerConverter = null; boolean isScalar = true; if (innerToscaType != null) { innerConverter = innerToscaType.getValueConverter(); } else { DataTypeDefinition dataTypeDefinition = dataTypes.get(innerType); if (dataTypeDefinition != null) { ToscaPropertyType toscaPropertyType = null; if ((toscaPropertyType = isScalarType(dataTypeDefinition)) != null) { innerConverter = toscaPropertyType.getValueConverter(); } else { isScalar = false; innerConverter = ToscaMapValueConverter.getInstance(); } } else { log.debug("inner Tosca Type is null"); return value; } } JsonElement jsonElement = null; try { StringReader reader = new StringReader(value); JsonReader jsonReader = new JsonReader(reader); jsonReader.setLenient(true); jsonElement = jsonParser.parse(jsonReader); } catch (JsonSyntaxException e) { log.debug("convertToToscaValue failed to parse json value :", e); return null; } if (jsonElement == null || true == jsonElement.isJsonNull()) { log.debug("convertToToscaValue json element is null"); return null; } if (jsonElement.isJsonArray() == false) { // get_input all array like get_input: qrouter_names return handleComplexJsonValue(jsonElement); } JsonArray asJsonArray = jsonElement.getAsJsonArray(); ArrayList<Object> toscaList = new ArrayList<Object>(); final boolean isScalarF = isScalar; final ToscaValueConverter innerConverterFinal = innerConverter; asJsonArray.forEach(e -> { Object convertedValue = null; if (isScalarF) { log.debug("try to convert scalar value {}", e.getAsString()); if (e.getAsString() == null) { convertedValue = null; } else { JsonElement singleElement = jsonParser.parse(e.getAsString()); if (singleElement.isJsonPrimitive()) { convertedValue = innerConverterFinal.convertToToscaValue(e.getAsString(), innerType, dataTypes); } else { convertedValue = handleComplexJsonValue(singleElement); } } } else { JsonObject asJsonObject = e.getAsJsonObject(); Set<Entry<String, JsonElement>> entrySet = asJsonObject.entrySet(); DataTypeDefinition dataTypeDefinition = dataTypes.get(innerType); Map<String, PropertyDefinition> allProperties = getAllProperties(dataTypeDefinition); Map<String, Object> toscaObjectPresentation = new HashMap<>(); // log.debug("try to convert datatype value {}", // e.getAsString()); for (Entry<String, JsonElement> entry : entrySet) { String propName = entry.getKey(); JsonElement elementValue = entry.getValue(); PropertyDefinition propertyDefinition = allProperties.get(propName); if (propertyDefinition == null) { log.debug("The property {} was not found under data type {}", propName, dataTypeDefinition.getName()); continue; // return null; } String type = propertyDefinition.getType(); ToscaPropertyType propertyType = ToscaPropertyType.isValidType(type); Object convValue; if (propertyType != null) { if (elementValue.isJsonPrimitive()) { ToscaValueConverter valueConverter = propertyType.getValueConverter(); convValue = valueConverter.convertToToscaValue(elementValue.getAsString(), type, dataTypes); } else { if (ToscaPropertyType.MAP.equals(type) || ToscaPropertyType.LIST.equals(propertyType)) { ToscaValueConverter valueConverter = propertyType.getValueConverter(); String json = gson.toJson(elementValue); String innerTypeRecursive = propertyDefinition.getSchema().getProperty() .getType(); convValue = valueConverter.convertToToscaValue(json, innerTypeRecursive, dataTypes); } else { convValue = handleComplexJsonValue(elementValue); } } } else { String json = gson.toJson(elementValue); convValue = convertToToscaValue(json, type, dataTypes); } toscaObjectPresentation.put(propName, convValue); } convertedValue = toscaObjectPresentation; } toscaList.add(convertedValue); }); return toscaList; } catch ( JsonParseException e) { log.debug("Failed to parse json : {}. {}", value, e); BeEcompErrorManager.getInstance().logBeInvalidJsonInput("List Converter"); return null; } } }