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import java.util.ArrayList;
/** * Credential Repository for handling user credentials * @author Claudia Metzler */
public class CredentialRepository implements CredentialRepositoryInterface{
private int idCounter = 0; private ArrayList<Credential> credentials;
/** * Konstruktor * * Initializes instance variable ArrayList */ public CredentialRepository() { this.credentials = new ArrayList<Credential>(); }
/** * Create a new Set of User credentials * @param name * @param password * @return size of repositoy - arraylist for checking */
public int createNewCredential(String name, String password) { try { this.credentials.add(new Credential(name, password, this.idCounter++)); } catch(Exception fail) { System.err.println(fail.getMessage()); }
return this.getListSize(); }
/** * Function to return a specific Credential via Name input * @param needle [ aka to-search-for ] * @return usercredential | NULL */
@Override public Credential getCredentialsViaName(String needle) {
for(int c = 0; c < this.getListSize(); c++) { Credential credential = this.credentials.get(c);
if(credential.getName().equals(needle)) return credential; }
return null; }
/** * Function to return a specific Credential via ID * @param id * @return usercredential | NULL */
@Override public Credential getCredentialsViaId(int id) {
try{ return this.credentials.get(id); } catch (IndexOutOfBoundsException outOfBoundsException) { return null; }
}
/** * Function to update userpassword, assuming we already know the userid * @param index * @param newPassword */ @Override public void updatePassword(int index, String newPassword) {
try{ this.credentials.get(index).upDatePassword(newPassword); } catch (IndexOutOfBoundsException outOfBoundsException) { System.err.println("No Credential with Index" + index + " found"); }
}
/** * Function to update username analoge to updatePassword * @param index * @param newUsername */ public void updateUsername(int index, String newUsername){
try{ this.credentials.get(index).updateUsername(newUsername); } catch (IndexOutOfBoundsException outOfBoundsException) { System.err.println("No Credential with Index" + index + " found"); } }
/** * Deletion function for credentials * Will immediately delete - double check for user permission * @param index */ @Override public void delete(int index) {
this.credentials.remove(index);
}
private int getListSize() { return this.credentials.size(); }
}
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