/*******************************************************************************
* Copyright 2013 SAP AG
*
* 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.sap.core.odata.ref.processor;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import com.sap.core.odata.api.commons.HttpContentType;
import com.sap.core.odata.api.edm.EdmEntitySet;
import com.sap.core.odata.api.edm.EdmException;
import com.sap.core.odata.api.edm.EdmFunctionImport;
import com.sap.core.odata.api.exception.ODataApplicationException;
import com.sap.core.odata.api.exception.ODataNotFoundException;
import com.sap.core.odata.api.exception.ODataNotImplementedException;
import com.sap.core.odata.ref.model.Building;
import com.sap.core.odata.ref.model.DataContainer;
import com.sap.core.odata.ref.model.Employee;
import com.sap.core.odata.ref.model.Location;
import com.sap.core.odata.ref.model.Manager;
import com.sap.core.odata.ref.model.Photo;
import com.sap.core.odata.ref.model.Room;
import com.sap.core.odata.ref.model.Team;
/**
* Data for the reference scenario
* @author SAP AG
*/
public class ScenarioDataSource implements ListsDataSource {
private static final String ENTITYSET_1_1 = "Employees";
private static final String ENTITYSET_1_2 = "Teams";
private static final String ENTITYSET_1_3 = "Rooms";
private static final String ENTITYSET_1_4 = "Managers";
private static final String ENTITYSET_1_5 = "Buildings";
private static final String ENTITYSET_2_1 = "Photos";
private final DataContainer dataContainer;
public ScenarioDataSource(final DataContainer dataContainer) {
this.dataContainer = dataContainer;
}
@Override
public List<?> readData(final EdmEntitySet entitySet) throws ODataNotImplementedException, ODataNotFoundException, EdmException {
if (ENTITYSET_1_1.equals(entitySet.getName())) {
return Arrays.asList(dataContainer.getEmployees().toArray());
} else if (ENTITYSET_1_2.equals(entitySet.getName())) {
return Arrays.asList(dataContainer.getTeams().toArray());
} else if (ENTITYSET_1_3.equals(entitySet.getName())) {
return Arrays.asList(dataContainer.getRooms().toArray());
} else if (ENTITYSET_1_4.equals(entitySet.getName())) {
return Arrays.asList(dataContainer.getManagers().toArray());
} else if (ENTITYSET_1_5.equals(entitySet.getName())) {
return Arrays.asList(dataContainer.getBuildings().toArray());
} else if (ENTITYSET_2_1.equals(entitySet.getName())) {
return Arrays.asList(dataContainer.getPhotos().toArray());
} else {
throw new ODataNotImplementedException();
}
}
@Override
public Object readData(final EdmEntitySet entitySet, final Map<String, Object> keys) throws ODataNotImplementedException, ODataNotFoundException, EdmException {
if (ENTITYSET_1_1.equals(entitySet.getName())) {
for (final Employee employee : dataContainer.getEmployees()) {
if (employee.getId().equals(keys.get("EmployeeId"))) {
return employee;
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else if (ENTITYSET_1_2.equals(entitySet.getName())) {
for (final Team team : dataContainer.getTeams()) {
if (team.getId().equals(keys.get("Id"))) {
return team;
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else if (ENTITYSET_1_3.equals(entitySet.getName())) {
for (final Room room : dataContainer.getRooms()) {
if (room.getId().equals(keys.get("Id"))) {
return room;
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else if (ENTITYSET_1_4.equals(entitySet.getName())) {
for (final Manager manager : dataContainer.getManagers()) {
if (manager.getId().equals(keys.get("EmployeeId"))) {
return manager;
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else if (ENTITYSET_1_5.equals(entitySet.getName())) {
for (final Building building : dataContainer.getBuildings()) {
if (building.getId().equals(keys.get("Id"))) {
return building;
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else if (ENTITYSET_2_1.equals(entitySet.getName())) {
for (final Photo photo : dataContainer.getPhotos()) {
if (photo.getId() == (Integer) keys.get("Id")
&& photo.getType().equals(keys.get("Type"))) {
return photo;
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
}
throw new ODataNotImplementedException();
}
@Override
public Object readRelatedData(final EdmEntitySet sourceEntitySet, final Object sourceData, final EdmEntitySet targetEntitySet, final Map<String, Object> targetKeys) throws ODataNotImplementedException, ODataNotFoundException, EdmException {
if (ENTITYSET_1_1.equals(targetEntitySet.getName())) {
List<?> data = Collections.emptyList();
if (ENTITYSET_1_2.equals(sourceEntitySet.getName())) {
data = ((Team) sourceData).getEmployees();
} else if (ENTITYSET_1_3.equals(sourceEntitySet.getName())) {
data = ((Room) sourceData).getEmployees();
} else if (ENTITYSET_1_4.equals(sourceEntitySet.getName())) {
data = ((Manager) sourceData).getEmployees();
}
if (data.isEmpty()) {
throw new ODataNotFoundException(null);
}
if (targetKeys.isEmpty()) {
return Arrays.asList(data.toArray());
} else {
for (final Object employee : data) {
if (((Employee) employee).getId().equals(targetKeys.get("EmployeeId"))) {
return employee;
}
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else if (ENTITYSET_1_2.equals(targetEntitySet.getName())) {
if (((Employee) sourceData).getTeam() == null) {
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else {
return ((Employee) sourceData).getTeam();
}
} else if (ENTITYSET_1_3.equals(targetEntitySet.getName())) {
if (ENTITYSET_1_1.equals(sourceEntitySet.getName())) {
if (((Employee) sourceData).getRoom() == null) {
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else {
return ((Employee) sourceData).getRoom();
}
} else if (ENTITYSET_1_5.equals(sourceEntitySet.getName())) {
List<Room> data = ((Building) sourceData).getRooms();
if (data.isEmpty()) {
throw new ODataNotFoundException(null);
}
if (targetKeys.isEmpty()) {
return Arrays.asList(data.toArray());
} else {
for (final Object room : data) {
if (((Room) room).getId().equals(targetKeys.get("Id"))) {
return room;
}
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
}
throw new ODataNotImplementedException();
} else if (ENTITYSET_1_4.equals(targetEntitySet.getName())) {
if (((Employee) sourceData).getManager() == null) {
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else {
return ((Employee) sourceData).getManager();
}
} else if (ENTITYSET_1_5.equals(targetEntitySet.getName())) {
if (((Room) sourceData).getBuilding() == null) {
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else {
return ((Room) sourceData).getBuilding();
}
} else {
throw new ODataNotImplementedException();
}
}
@Override
public Object readData(final EdmFunctionImport function, final Map<String, Object> parameters, final Map<String, Object> keys) throws ODataNotImplementedException, ODataNotFoundException, EdmException {
if (function.getName().equals("EmployeeSearch")) {
if (parameters.get("q") == null) {
throw new ODataNotFoundException(null);
} else {
final List<Employee> found = searchEmployees((String) parameters.get("q"));
if (keys.isEmpty()) {
return found;
} else {
for (final Employee employee : found) {
if (employee.getId().equals(keys.get("EmployeeId"))) {
return employee;
}
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
}
} else if (function.getName().equals("AllLocations")) {
return Arrays.asList(getLocations().keySet().toArray());
} else if (function.getName().equals("AllUsedRoomIds")) {
List<String> data = new ArrayList<String>();
for (final Room room : dataContainer.getRooms()) {
if (!room.getEmployees().isEmpty()) {
data.add(room.getId());
}
}
if (data.isEmpty()) {
throw new ODataNotFoundException(null);
} else {
return data;
}
} else if (function.getName().equals("MaximalAge")) {
return getOldestEmployee().getAge();
} else if (function.getName().equals("MostCommonLocation")) {
return getMostCommonLocation();
} else if (function.getName().equals("ManagerPhoto")) {
if (parameters.get("Id") == null) {
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
}
for (final Manager manager : dataContainer.getManagers()) {
if (manager.getId().equals(parameters.get("Id"))) {
return new BinaryData(manager.getImage(), manager.getImageType());
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else if (function.getName().equals("OldestEmployee")) {
return getOldestEmployee();
} else {
throw new ODataNotImplementedException();
}
}
private List<Employee> searchEmployees(final String search) {
List<Employee> employees = new ArrayList<Employee>();
for (final Employee employee : dataContainer.getEmployees()) {
if (employee.getEmployeeName().contains(search)
|| employee.getLocation() != null
&& (employee.getLocation().getCity().getCityName().contains(search)
|| employee.getLocation().getCity().getPostalCode().contains(search)
|| employee.getLocation().getCountry().contains(search))) {
employees.add(employee);
}
}
return employees;
}
private Map<Location, Integer> getLocations() throws ODataNotFoundException {
Map<Location, Integer> locations = new LinkedHashMap<Location, Integer>();
for (Employee employee : dataContainer.getEmployees()) {
if (employee.getLocation() != null && employee.getLocation().getCity() != null) {
boolean found = false;
for (final Location location : locations.keySet()) {
if (employee.getLocation().getCity().getPostalCode() == location.getCity().getPostalCode()
&& employee.getLocation().getCity().getCityName() == location.getCity().getCityName()
&& employee.getLocation().getCountry() == location.getCountry()) {
found = true;
locations.put(location, locations.get(location) + 1);
}
}
if (!found) {
locations.put(employee.getLocation(), 1);
}
}
}
if (locations.isEmpty()) {
throw new ODataNotFoundException(null);
} else {
return locations;
}
}
private Location getMostCommonLocation() throws ODataNotFoundException {
Integer count = 0;
Location location = null;
for (Entry<Location, Integer> entry : getLocations().entrySet()) {
if (entry.getValue() > count) {
count = entry.getValue();
location = entry.getKey();
}
}
return location;
}
private Employee getOldestEmployee() {
Employee oldestEmployee = null;
for (final Employee employee : dataContainer.getEmployees()) {
if (oldestEmployee == null || employee.getAge() > oldestEmployee.getAge()) {
oldestEmployee = employee;
}
}
return oldestEmployee;
}
@Override
public BinaryData readBinaryData(final EdmEntitySet entitySet, final Object mediaLinkEntryData) throws ODataNotImplementedException, ODataNotFoundException, EdmException, ODataApplicationException {
if (mediaLinkEntryData == null) {
throw new ODataNotFoundException(null);
}
if (ENTITYSET_1_1.equals(entitySet.getName()) || ENTITYSET_1_4.equals(entitySet.getName())) {
final Employee employee = (Employee) mediaLinkEntryData;
if (employee.getImage() == null) {
throw new ODataNotFoundException(null);
}
return new BinaryData(employee.getImage(), employee.getImageType());
} else if (ENTITYSET_2_1.equals(entitySet.getName())) {
final Photo photo = (Photo) mediaLinkEntryData;
return new BinaryData(photo.getImage(), photo.getImageType());
} else {
throw new ODataNotImplementedException();
}
}
@Override
public void writeBinaryData(final EdmEntitySet entitySet, final Object mediaLinkEntryData, final BinaryData binaryData) throws ODataNotImplementedException, ODataNotFoundException, EdmException, ODataApplicationException {
if (mediaLinkEntryData == null) {
throw new ODataNotFoundException(null);
}
if (ENTITYSET_1_1.equals(entitySet.getName()) || ENTITYSET_1_4.equals(entitySet.getName())) {
final Employee employee = (Employee) mediaLinkEntryData;
employee.setImage(binaryData.getData());
employee.setImageType(binaryData.getMimeType());
} else if (ENTITYSET_2_1.equals(entitySet.getName())) {
final Photo photo = (Photo) mediaLinkEntryData;
photo.setImage(binaryData.getData());
photo.setImageType(binaryData.getMimeType());
} else {
throw new ODataNotImplementedException();
}
}
@Override
public Object newDataObject(final EdmEntitySet entitySet) throws ODataNotImplementedException, EdmException {
if (ENTITYSET_1_1.equals(entitySet.getName())) {
Employee employee = dataContainer.createEmployee();
employee.setAge(0);
employee.setLocation(new Location(null, null, null));
return employee;
} else if (ENTITYSET_1_2.equals(entitySet.getName())) {
return dataContainer.createTeam();
} else if (ENTITYSET_1_3.equals(entitySet.getName())) {
Room room = dataContainer.createRoom();
room.setSeats(0);
room.setVersion(0);
return room;
} else if (ENTITYSET_1_4.equals(entitySet.getName())) {
Manager manager = dataContainer.createManager();
manager.setAge(0);
manager.setLocation(new Location(null, null, null));
return manager;
} else if (ENTITYSET_1_5.equals(entitySet.getName())) {
return dataContainer.createBuilding();
} else if (ENTITYSET_2_1.equals(entitySet.getName())) {
return dataContainer.createPhoto(HttpContentType.APPLICATION_OCTET_STREAM);
} else {
throw new ODataNotImplementedException();
}
}
@Override
public void deleteData(final EdmEntitySet entitySet, final Map<String, Object> keys) throws ODataNotImplementedException, ODataNotFoundException, EdmException, ODataApplicationException {
final Object data = readData(entitySet, keys);
if (ENTITYSET_1_1.equals(entitySet.getName()) || ENTITYSET_1_4.equals(entitySet.getName())) {
if (data instanceof Manager) {
for (Employee employee : ((Manager) data).getEmployees()) {
employee.setManager(null);
}
}
final Employee employee = (Employee) data;
if (employee.getManager() != null) {
employee.getManager().getEmployees().remove(employee);
}
if (employee.getTeam() != null) {
employee.getTeam().getEmployees().remove(employee);
}
if (employee.getRoom() != null) {
employee.getRoom().getEmployees().remove(employee);
}
if (data instanceof Manager) {
dataContainer.getManagers().remove(data);
}
dataContainer.getEmployees().remove(data);
} else if (ENTITYSET_1_2.equals(entitySet.getName())) {
for (Employee employee : ((Team) data).getEmployees()) {
employee.setTeam(null);
}
dataContainer.getTeams().remove(data);
} else if (ENTITYSET_1_3.equals(entitySet.getName())) {
for (Employee employee : ((Room) data).getEmployees()) {
employee.setRoom(null);
}
if (((Room) data).getBuilding() != null) {
((Room) data).getBuilding().getRooms().remove(data);
}
dataContainer.getRooms().remove(data);
} else if (ENTITYSET_1_5.equals(entitySet.getName())) {
for (Room room : ((Building) data).getRooms()) {
room.setBuilding(null);
}
dataContainer.getBuildings().remove(data);
} else if (ENTITYSET_2_1.equals(entitySet.getName())) {
dataContainer.getPhotos().remove(data);
} else {
throw new ODataNotImplementedException();
}
}
@Override
public void createData(final EdmEntitySet entitySet, final Object data) throws ODataNotImplementedException, EdmException, ODataApplicationException {
if (ENTITYSET_1_1.equals(entitySet.getName())) {
dataContainer.getEmployees().add((Employee) data);
} else if (ENTITYSET_1_2.equals(entitySet.getName())) {
dataContainer.getTeams().add((Team) data);
} else if (ENTITYSET_1_3.equals(entitySet.getName())) {
dataContainer.getRooms().add((Room) data);
} else if (ENTITYSET_1_4.equals(entitySet.getName())) {
dataContainer.getManagers().add((Manager) data);
} else if (ENTITYSET_1_5.equals(entitySet.getName())) {
dataContainer.getBuildings().add((Building) data);
} else if (ENTITYSET_2_1.equals(entitySet.getName())) {
dataContainer.getPhotos().add((Photo) data);
} else {
throw new ODataNotImplementedException();
}
}
@Override
public void deleteRelation(final EdmEntitySet sourceEntitySet, final Object sourceData, final EdmEntitySet targetEntitySet, final Map<String, Object> targetKeys) throws ODataNotImplementedException, ODataNotFoundException, EdmException, ODataApplicationException {
if (ENTITYSET_1_1.equals(targetEntitySet.getName())) {
if (ENTITYSET_1_2.equals(sourceEntitySet.getName())) {
for (Iterator<Employee> iterator = ((Team) sourceData).getEmployees().iterator(); iterator.hasNext();) {
final Employee employee = iterator.next();
if (employee.getId().equals(targetKeys.get("EmployeeId"))) {
employee.setTeam(null);
iterator.remove();
}
}
} else if (ENTITYSET_1_3.equals(sourceEntitySet.getName())) {
for (Iterator<Employee> iterator = ((Room) sourceData).getEmployees().iterator(); iterator.hasNext();) {
final Employee employee = iterator.next();
if (employee.getId().equals(targetKeys.get("EmployeeId"))) {
employee.setRoom(null);
iterator.remove();
}
}
} else if (ENTITYSET_1_4.equals(sourceEntitySet.getName())) {
for (Iterator<Employee> iterator = ((Manager) sourceData).getEmployees().iterator(); iterator.hasNext();) {
final Employee employee = iterator.next();
if (employee.getId().equals(targetKeys.get("EmployeeId"))) {
employee.setManager(null);
iterator.remove();
}
}
}
} else if (ENTITYSET_1_2.equals(targetEntitySet.getName())) {
((Employee) sourceData).getTeam().getEmployees().remove(sourceData);
((Employee) sourceData).setTeam(null);
} else if (ENTITYSET_1_3.equals(targetEntitySet.getName())) {
if (ENTITYSET_1_1.equals(sourceEntitySet.getName())) {
((Employee) sourceData).getRoom().getEmployees().remove(sourceData);
((Employee) sourceData).setRoom(null);
} else if (ENTITYSET_1_5.equals(sourceEntitySet.getName())) {
for (Iterator<Room> iterator = ((Building) sourceData).getRooms().iterator(); iterator.hasNext();) {
final Room room = iterator.next();
if (room.getId().equals(targetKeys.get("Id"))) {
room.setBuilding(null);
iterator.remove();
}
}
}
} else if (ENTITYSET_1_4.equals(targetEntitySet.getName())) {
((Employee) sourceData).getManager().getEmployees().remove(sourceData);
((Employee) sourceData).setManager(null);
} else if (ENTITYSET_1_5.equals(targetEntitySet.getName())) {
((Room) sourceData).getBuilding().getRooms().remove(sourceData);
((Room) sourceData).setBuilding(null);
} else {
throw new ODataNotImplementedException();
}
}
@Override
public void writeRelation(final EdmEntitySet sourceEntitySet, final Object sourceData, final EdmEntitySet targetEntitySet, final Map<String, Object> targetKeys) throws ODataNotImplementedException, ODataNotFoundException, EdmException, ODataApplicationException {
if (ENTITYSET_1_1.equals(targetEntitySet.getName())) {
final Employee employee = (Employee) readData(targetEntitySet, targetKeys);
if (ENTITYSET_1_2.equals(sourceEntitySet.getName())) {
if (employee.getTeam() != null) {
employee.getTeam().getEmployees().remove(employee);
}
employee.setTeam((Team) sourceData);
((Team) sourceData).getEmployees().add(employee);
} else if (ENTITYSET_1_3.equals(sourceEntitySet.getName())) {
if (employee.getRoom() != null) {
employee.getRoom().getEmployees().remove(employee);
}
employee.setRoom((Room) sourceData);
((Room) sourceData).getEmployees().add(employee);
} else if (ENTITYSET_1_4.equals(sourceEntitySet.getName())) {
if (employee.getManager() != null) {
employee.getManager().getEmployees().remove(employee);
}
employee.setManager((Manager) sourceData);
((Manager) sourceData).getEmployees().add(employee);
}
} else if (ENTITYSET_1_2.equals(targetEntitySet.getName())) {
final Team team = (Team) readData(targetEntitySet, targetKeys);
if (((Employee) sourceData).getTeam() != null) {
((Employee) sourceData).getTeam().getEmployees().remove(sourceData);
}
((Employee) sourceData).setTeam(team);
team.getEmployees().add((Employee) sourceData);
} else if (ENTITYSET_1_3.equals(targetEntitySet.getName())) {
final Room room = (Room) readData(targetEntitySet, targetKeys);
if (ENTITYSET_1_1.equals(sourceEntitySet.getName())) {
if (((Employee) sourceData).getRoom() != null) {
((Employee) sourceData).getRoom().getEmployees().remove(sourceData);
}
((Employee) sourceData).setRoom(room);
room.getEmployees().add((Employee) sourceData);
} else if (ENTITYSET_1_5.equals(sourceEntitySet.getName())) {
if (room.getBuilding() != null) {
room.getBuilding().getRooms().remove(room);
}
room.setBuilding((Building) sourceData);
((Building) sourceData).getRooms().add(room);
}
} else if (ENTITYSET_1_4.equals(targetEntitySet.getName())) {
final Manager manager = (Manager) readData(targetEntitySet, targetKeys);
if (((Employee) sourceData).getManager() != null) {
((Employee) sourceData).getManager().getEmployees().remove(sourceData);
}
((Employee) sourceData).setManager(manager);
manager.getEmployees().add((Employee) sourceData);
} else if (ENTITYSET_1_5.equals(targetEntitySet.getName())) {
final Building building = (Building) readData(targetEntitySet, targetKeys);
if (((Room) sourceData).getBuilding() != null) {
((Room) sourceData).getBuilding().getRooms().remove(sourceData);
}
((Room) sourceData).setBuilding(building);
building.getRooms().add((Room) sourceData);
} else {
throw new ODataNotImplementedException();
}
}
}