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Module Server, packg tools : création packg io, création clss ISerialFileManager, SimpleSerialFileManager et SimpleSerialFileManagerFactory

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Notmoo 2017-07-31 18:57:32 +02:00
parent b2f1acfdc7
commit dce4d4a4d2
3 changed files with 135 additions and 0 deletions
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12
Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/io/ISerialFileManager.java Normal file
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package com.pqt.server.tools.io;
import java.util.List;
import java.util.Set;
//TODO écrire javadoc
public interface ISerialFileManager<T> {
List<T> loadListFromFile();
Set<T> loadSetFromFile();
void saveListToFile(List<T> list);
void saveSetToFile(Set<T> set);
}

108
Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/io/SimpleSerialFileManager.java Normal file
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package com.pqt.server.tools.io;
import com.pqt.server.tools.FileUtil;
import java.io.*;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.*;
//TODO vérifier que le save écrase bien le contenu précédent du fichier
public class SimpleSerialFileManager<T> implements ISerialFileManager<T> {
private Path filePath;
private Class<T> clazz;
SimpleSerialFileManager(String filePath, Class<T> clazz){
this(Paths.get(filePath), clazz);
}
SimpleSerialFileManager(Path filePath, Class<T> clazz){
this.filePath = filePath;
this.clazz = clazz;
try{
FileUtil.createFileIfNotExist(filePath);
}catch (IOException e){
e.printStackTrace();
}
}
@Override
public List<T> loadListFromFile() {
try{
if(!FileUtil.createFileIfNotExist(filePath)){
List<T> loadedEntries = new ArrayList<>();
fillCollection(loadedEntries);
return loadedEntries;
}
}catch(IOException | ClassNotFoundException e){
e.printStackTrace();
}
return null;
}
@Override
public Set<T> loadSetFromFile() {
try{
if(!FileUtil.createFileIfNotExist(filePath)){
Set<T> loadedEntries = new HashSet<>();
fillCollection(loadedEntries);
return loadedEntries;
}
}catch(IOException | ClassNotFoundException e){
e.printStackTrace();
}
return null;
}
private void fillCollection(Collection<T> collection) throws IOException, ClassNotFoundException {
if(collection==null) return;
try(FileInputStream fis = new FileInputStream(filePath.toString());
ObjectInputStream ois = new ObjectInputStream(fis)){
boolean end = false;
do{
try{
Object obj = ois.readObject();
if(clazz.isInstance(obj)){
T ae = clazz.cast(obj);
collection.add(ae);
}
}catch (EOFException e){
end = true;
}
}while(!end);
}
}
@Override
public void saveListToFile(List<T> list) {
save(list);
}
@Override
public void saveSetToFile(Set<T> set) {
save(set);
}
private void save(Collection<T> collection){
try{
FileUtil.createFileIfNotExist(filePath);
}catch (IOException e){
e.printStackTrace();
return;
}
try(FileOutputStream fos = new FileOutputStream(filePath.toString());
ObjectOutputStream oos = new ObjectOutputStream(fos)){
collection.forEach(p -> {
try {
oos.writeObject(p);
} catch (IOException e) {
e.printStackTrace();
}
});
}catch(IOException e){
e.printStackTrace();
}
}
}

15
Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/io/SimpleSerialFileManagerFactory.java Normal file
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package com.pqt.server.tools.io;
import java.nio.file.Path;
public class SimpleSerialFileManagerFactory {
protected SimpleSerialFileManagerFactory(){}
public static <T> ISerialFileManager<T> getFileManager(Class<T> clazz, String filePath){
return new SimpleSerialFileManager<>(filePath, clazz);
}
public static <T> ISerialFileManager<T> getFileManager(Class<T> clazz, Path filePath){
return new SimpleSerialFileManager<>(filePath, clazz);
}
}