Java tutorial
/* * Copyright (C) 2015 University of Washington * * 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 org.opendatakit.common.android.utilities; import android.os.RemoteException; import com.fasterxml.jackson.core.JsonParseException; import com.fasterxml.jackson.databind.JsonMappingException; import com.fasterxml.jackson.databind.type.CollectionType; import org.opendatakit.aggregate.odktables.rest.ElementDataType; import org.opendatakit.database.service.KeyValueStoreEntry; import java.io.IOException; import java.util.ArrayList; /** * Replacement for KeyValueStoreHelper object. * * @author mitchellsundt@gmail.com */ public class KeyValueStoreUtils { public static KeyValueStoreEntry buildEntry(String tableId, String partition, String aspect, String key, ElementDataType type, String serializedValue) { KeyValueStoreEntry entry = new KeyValueStoreEntry(); entry.tableId = tableId; entry.partition = partition; entry.aspect = aspect; entry.key = key; entry.type = type.name(); entry.value = serializedValue; return entry; } public static Double getNumber(String appName, KeyValueStoreEntry entry) throws IllegalArgumentException { if (entry == null) { return null; } if (!entry.type.equals(ElementDataType.number.name())) { throw new IllegalArgumentException("requested number entry for " + "key: " + entry.key + ", but the corresponding entry in the store was " + "not of type: " + ElementDataType.number.name()); } try { return Double.parseDouble(entry.value); } catch (NumberFormatException e) { throw new IllegalArgumentException( "requested int entry for " + "key: " + entry.key + ", but the value in the store failed to " + "parse to type: " + ElementDataType.number.name()); } } public static Long getLong(String appName, KeyValueStoreEntry entry) throws IllegalArgumentException { if (entry == null) { return null; } if (!entry.type.equals(ElementDataType.integer.name())) { throw new IllegalArgumentException("requested int entry for " + "key: " + entry.key + ", but the corresponding entry in the store was " + "not of type: " + ElementDataType.integer.name()); } try { return Long.parseLong(entry.value); } catch (NumberFormatException e) { throw new IllegalArgumentException( "requested int entry for " + "key: " + entry.key + ", but the value in the store failed to " + "parse to type: " + ElementDataType.integer.name()); } } public static Integer getInteger(String appName, KeyValueStoreEntry entry) throws IllegalArgumentException { if (entry == null) { return null; } if (!entry.type.equals(ElementDataType.integer.name())) { throw new IllegalArgumentException("requested int entry for " + "key: " + entry.key + ", but the corresponding entry in the store was " + "not of type: " + ElementDataType.integer.name()); } try { return Integer.parseInt(entry.value); } catch (NumberFormatException e) { throw new IllegalArgumentException( "requested int entry for " + "key: " + entry.key + ", but the value in the store failed to " + "parse to type: " + ElementDataType.integer.name()); } } public static Boolean getBoolean(String appName, KeyValueStoreEntry entry) throws IllegalArgumentException { if (entry == null) { return null; } if (!entry.type.equals(ElementDataType.bool.name())) { throw new IllegalArgumentException("requested boolean entry for " + "key: " + entry.key + ", but the corresponding entry in the store was " + "not of type: " + ElementDataType.bool.name()); } try { return DataHelper.intToBool(Integer.parseInt(entry.value)); } catch (NumberFormatException e) { throw new IllegalArgumentException("requested boolean entry for " + "key: " + entry.key + ", but the value in the store failed to " + "parse to type: " + ElementDataType.bool.name()); } } public static String getString(String appName, KeyValueStoreEntry entry) throws IllegalArgumentException { if (entry == null) { return null; } // everything can be returned as a string.... return entry.value; } public static <T> ArrayList<T> getArray(String appName, KeyValueStoreEntry entry, Class<T> clazz) throws IllegalArgumentException { CollectionType javaType = ODKFileUtils.mapper.getTypeFactory().constructCollectionType(ArrayList.class, clazz); if (entry == null) { return null; } if (!entry.type.equals(ElementDataType.array.name())) { throw new IllegalArgumentException("requested list entry for " + "key: " + entry.key + ", but the corresponding entry in the store was " + "not of type: " + ElementDataType.array.name()); } ArrayList<T> result = null; try { if (entry.value != null && entry.value.length() != 0) { result = ODKFileUtils.mapper.readValue(entry.value, javaType); } } catch (JsonParseException e) { WebLogger.getLogger(appName).e("KeyValueStoreUtils", "getArray: problem parsing json list entry from the kvs"); WebLogger.getLogger(appName).printStackTrace(e); throw new IllegalArgumentException("requested list entry for " + "key: " + entry.key + ", but the value in the store failed to " + "parse to type: " + ElementDataType.array.name()); } catch (JsonMappingException e) { WebLogger.getLogger(appName).e("KeyValueStoreUtils", "getArray: problem mapping json list entry from the kvs"); WebLogger.getLogger(appName).printStackTrace(e); throw new IllegalArgumentException("requested list entry for " + "key: " + entry.key + ", but the value in the store failed to " + "parse to type: " + ElementDataType.array.name()); } catch (IOException e) { WebLogger.getLogger(appName).e("KeyValueStoreUtils", "getArray: i/o problem with json for list entry from the kvs"); WebLogger.getLogger(appName).printStackTrace(e); throw new IllegalArgumentException("requested list entry for " + "key: " + entry.key + ", but the value in the store failed to " + "parse to type: " + ElementDataType.array.name()); } return result; } public static String getObject(String appName, KeyValueStoreEntry entry) throws IllegalArgumentException { if (entry == null) { return null; } if (!entry.type.equals(ElementDataType.object.name()) && !entry.type.equals(ElementDataType.array.name())) { throw new IllegalArgumentException("requested object entry for " + "key: " + entry.key + ", but the corresponding entry in the store was " + "not of type: " + ElementDataType.object.name() + " or: " + ElementDataType.array.name()); } return entry.value; } }