Add more vCard fields

* support for vCard organization (company / job title)
* support for vCard IMPP addresses (closes #105)
* refactoring

res/xml/contacts.xml

@@ -20,21 +20,35 @@
 		    maxOccurs="1" />
 		
 		<DataKind kind="phone">
-		    <Type type="fax_home" />
-		    <Type type="fax_work" />
-		    <Type type="home" />
             <Type type="mobile" />
-		    <Type type="other_fax" />
+            <Type type="home" />
-		    <Type type="pager" />
             <Type type="work" />
+            <Type type="fax_work" />
+            <Type type="fax_home" />
+            <Type type="pager" />
+            <Type type="other" />
+            <Type type="custom"/>
+            <Type type="callback" />
+            <Type type="car" />
+            <Type type="company_main" />
+            <Type type="isdn" />
+            <Type type="main" />
+            <Type type="other_fax" />
+            <Type type="radio" />
+            <Type type="telex" />
+            <Type type="tty_tdd" />
             <Type type="work_mobile"/>
             <Type type="work_pager" />
+            <Type type="assistant" />
+            <Type type="mms" />
         </DataKind>
 		
 		<DataKind kind="email">
             <Type type="home" />
             <Type type="work" />
             <Type type="other" />
+            <Type type="mobile" />
+            <Type type="custom" />
 		</DataKind>
 		
 		<DataKind kind="postal" needsStructured="true" >
@@ -56,10 +70,8 @@
 		<DataKind
 		    dateWithTime="false"
 		    kind="event">
-		    <Type
+		    <Type maxOccurs="1" type="birthday" yearOptional="false" />
-		        maxOccurs="1"
+		    <Type type="anniversary" />
-		        type="birthday"
-		        yearOptional="false" />
 		</DataKind>
 	</EditSchema>
 </ContactsAccountType>

src/at/bitfire/davdroid/resource/Contact.java

@@ -35,11 +35,14 @@ import ezvcard.property.Anniversary;
 import ezvcard.property.Birthday;
 import ezvcard.property.Email;
 import ezvcard.property.FormattedName;
+import ezvcard.property.Impp;
 import ezvcard.property.Nickname;
 import ezvcard.property.Note;
+import ezvcard.property.Organization;
 import ezvcard.property.Photo;
 import ezvcard.property.RawProperty;
 import ezvcard.property.Revision;
+import ezvcard.property.Role;
 import ezvcard.property.StructuredName;
 import ezvcard.property.Telephone;
 import ezvcard.property.Uid;
@@ -71,12 +74,20 @@ public class Contact extends Resource {
 	@Getter @Setter private String prefix, givenName, middleName, familyName, suffix;
 	@Getter @Setter private String phoneticGivenName, phoneticMiddleName, phoneticFamilyName;
 	@Getter @Setter private String note, URL;
+	@Getter @Setter private String organization, role;
 	
 	@Getter @Setter private byte[] photo;
 	
 	@Getter @Setter private Anniversary anniversary;
 	@Getter @Setter private Birthday birthDay;
 
+	@Getter private List<Email> emails = new LinkedList<Email>();
+	@Getter private List<Telephone> phoneNumbers = new LinkedList<Telephone>();
+	@Getter private List<Address> addresses = new LinkedList<Address>();
+	@Getter private List<Impp> impps = new LinkedList<Impp>();
+
+
+	/* instance methods */
 	
 	public Contact(String name, String ETag) {
 		super(name, ETag);
@@ -87,12 +98,11 @@ public class Contact extends Resource {
 		this.localID = localID;
 	}
 
-	
+	@Override
-	/* multiple-record fields */
+	public void initialize() {
-	
+		uid = UUID.randomUUID().toString();
-	@Getter private List<Email> emails = new LinkedList<Email>();
+		name = uid + ".vcf";
-	@Getter private List<Telephone> phoneNumbers = new LinkedList<Telephone>();
+	}
-	@Getter private List<Address> addresses = new LinkedList<Address>();
 
 	
 	/* VCard methods */
@@ -155,6 +165,17 @@ public class Contact extends Resource {
 			}
 		}
 		
+		if (vcard.getOrganization() != null) {
+			List<String> organizations = vcard.getOrganization().getValues();
+			if (!organizations.isEmpty())
+				organization = organizations.get(0);
+		}
+		List<Role> roles = vcard.getRoles();
+		if (!roles.isEmpty())
+			role = roles.get(0).getValue();
+		
+		impps = vcard.getImpps();
+		
 		Nickname nicknames = vcard.getNickname();
 		if (nicknames != null && nicknames.getValues() != null)
 			nickName = StringUtils.join(nicknames.getValues(), ", ");
@@ -222,16 +243,27 @@ public class Contact extends Resource {
 		if (photo != null)
 			vcard.addPhoto(new Photo(photo, ImageType.JPEG));
 		
-		if (nickName != null)
+		if (organization != null) {
+			Organization org = new Organization();
+			org.addValue(organization);
+			vcard.addOrganization(org);
+		}
+		if (role != null)
+			vcard.addRole(role);
+		
+		for (Impp impp : impps)
+			vcard.addImpp(impp);
+
+		if (nickName != null && !nickName.isEmpty())
 			vcard.setNickname(nickName);
 		
-		if (note != null)
+		if (note != null && !note.isEmpty())
 			vcard.addNote(note);
 		
 		for (Address address : addresses)
 			vcard.addAddress(address);
 		
-		if (URL != null)
+		if (URL != null && !URL.isEmpty())
 			vcard.addUrl(URL);
 		
 		if (anniversary != null)

src/at/bitfire/davdroid/resource/Event.java

@@ -102,6 +102,12 @@ public class Event extends Resource {
 		this.localID = localID;
 	}
 	
+	@Override
+	public void initialize() {
+		uid = DavSyncAdapter.generateUID();
+		name = uid.replace("@", "_") + ".ics";
+	}
+
 
 	@Override
 	@SuppressWarnings("unchecked")

src/at/bitfire/davdroid/resource/LocalAddressBook.java

@@ -7,11 +7,11 @@
  ******************************************************************************/
 package at.bitfire.davdroid.resource;
 
+import java.text.SimpleDateFormat;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Locale;
 import java.util.Set;
-import java.util.UUID;
 
 import org.apache.commons.lang.StringUtils;
 import org.apache.commons.lang.WordUtils;
@@ -28,8 +28,10 @@ import android.net.Uri;
 import android.os.RemoteException;
 import android.provider.ContactsContract.CommonDataKinds;
 import android.provider.ContactsContract.CommonDataKinds.Email;
+import android.provider.ContactsContract.CommonDataKinds.Im;
 import android.provider.ContactsContract.CommonDataKinds.Nickname;
 import android.provider.ContactsContract.CommonDataKinds.Note;
+import android.provider.ContactsContract.CommonDataKinds.Organization;
 import android.provider.ContactsContract.CommonDataKinds.Phone;
 import android.provider.ContactsContract.CommonDataKinds.Photo;
 import android.provider.ContactsContract.CommonDataKinds.StructuredName;
@@ -40,16 +42,18 @@ import android.provider.ContactsContract.RawContacts;
 import at.bitfire.davdroid.Constants;
 import ezvcard.parameter.AddressType;
 import ezvcard.parameter.EmailType;
+import ezvcard.parameter.ImppType;
 import ezvcard.parameter.TelephoneType;
 import ezvcard.property.Address;
 import ezvcard.property.Anniversary;
 import ezvcard.property.Birthday;
 import ezvcard.property.DateOrTimeProperty;
+import ezvcard.property.Impp;
 import ezvcard.property.Telephone;
 
 
 public class LocalAddressBook extends LocalCollection<Contact> {
-	private final static String TAG = "davdroid.LocalAddressBook";
+	//private final static String TAG = "davdroid.LocalAddressBook";
 	
 	protected AccountManager accountManager;
 	
@@ -102,25 +106,6 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 	
 	/* content provider (= database) querying */
 
-	@Override
-	public Contact findById(long localID, String remoteName, String eTag, boolean populate) throws RemoteException {
-		Contact c = new Contact(localID, remoteName, eTag);
-		if (populate)
-			populate(c);
-		return c;
-	}
-
-	@Override
-	public Contact findByRemoteName(String remoteName) throws RemoteException {
-		Cursor cursor = providerClient.query(entriesURI(),
-				new String[] { RawContacts._ID, entryColumnRemoteName(), entryColumnETag() },
-				entryColumnRemoteName() + "=?", new String[] { remoteName }, null);
-		if (cursor != null && cursor.moveToNext())
-			return new Contact(cursor.getLong(0), cursor.getString(1), cursor.getString(2));
-		else
-			return null;
-	}
-
 	@Override
 	public void populate(Resource res) throws RemoteException {
 		Contact c = (Contact)res;
@@ -259,6 +244,72 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 		if (cursor != null && cursor.moveToNext())
 			c.setPhoto(cursor.getBlob(0));
 		
+		// organization
+		cursor = providerClient.query(dataURI(), new String[] { Organization.COMPANY, Organization.TITLE },
+				Photo.RAW_CONTACT_ID + "=? AND " + Data.MIMETYPE + "=?",
+				new String[] { String.valueOf(c.getLocalID()), Organization.CONTENT_ITEM_TYPE }, null);
+		if (cursor != null && cursor.moveToNext()) {
+			c.setOrganization(cursor.getString(0));
+			c.setRole(cursor.getString(1));
+		}
+		
+		// IMPPs
+		cursor = providerClient.query(dataURI(), new String[] { Im.DATA, Im.TYPE, Im.LABEL, Im.PROTOCOL, Im.CUSTOM_PROTOCOL },
+				Photo.RAW_CONTACT_ID + "=? AND " + Data.MIMETYPE + "=?",
+				new String[] { String.valueOf(c.getLocalID()), Im.CONTENT_ITEM_TYPE }, null);
+		while (cursor != null && cursor.moveToNext()) {
+			String handle = cursor.getString(0);
+			
+			Impp impp = null;
+			switch (cursor.getInt(3)) {
+			case Im.PROTOCOL_AIM:
+				impp = Impp.aim(handle);
+				break;
+			case Im.PROTOCOL_MSN:
+				impp = Impp.msn(handle);
+				break;
+			case Im.PROTOCOL_YAHOO:
+				impp = Impp.yahoo(handle);
+				break;
+			case Im.PROTOCOL_SKYPE:
+				impp = Impp.skype(handle);
+				break;
+			case Im.PROTOCOL_QQ:
+				impp = new Impp("qq", handle);
+				break;
+			case Im.PROTOCOL_GOOGLE_TALK:
+				impp = new Impp("google-talk", handle);
+				break;
+			case Im.PROTOCOL_ICQ:
+				impp = Impp.icq(handle);
+				break;
+			case Im.PROTOCOL_JABBER:
+				impp = Impp.xmpp(handle);
+				break;
+			case Im.PROTOCOL_NETMEETING:
+				impp = new Impp("netmeeting", handle);
+				break;
+			case Im.PROTOCOL_CUSTOM:
+				impp = new Impp(cursor.getString(4), handle);
+				break;
+			}
+			
+			if (impp != null) {
+				switch (cursor.getInt(1)) {
+				case Im.TYPE_HOME:
+					impp.addType(ImppType.HOME);
+					break;
+				case Im.TYPE_WORK:
+					impp.addType(ImppType.WORK);
+					break;
+				case Im.TYPE_CUSTOM:
+					impp.addType(ImppType.get(labelToXName(cursor.getString(2))));
+					break;
+				}
+				c.getImpps().add(impp);
+			}
+		}
+		
 		// nick name (max. 1)
 		cursor = providerClient.query(dataURI(), new String[] { Nickname.NAME },
 				Nickname.RAW_CONTACT_ID + "=? AND " + Data.MIMETYPE + "=?",
@@ -350,18 +401,15 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 	}
 	
 	
+	/* create/update/delete */
+	
+	public Contact newResource(long localID, String resourceName, String eTag) {
+		return new Contact(localID, resourceName, eTag);
+	}
+
+	
 	/* private helper methods */
 	
-	@Override
-	protected String fileExtension() {
-		return ".vcf";
-	}
-	
-	@Override
-	protected String randomUID() {
-		return UUID.randomUUID().toString();
-	}
-
 	protected Uri dataURI() {
 		return syncAdapterURI(Data.CONTENT_URI);
 	}
@@ -416,8 +464,11 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 		if (contact.getPhoto() != null)
 			pendingOperations.add(buildPhoto(newDataInsertBuilder(localID, backrefIdx), contact.getPhoto()).build());
 		
-		// TODO organization
+		if (contact.getOrganization() != null || contact.getRole() != null)
-		// TODO im
+			pendingOperations.add(buildOrganization(newDataInsertBuilder(localID, backrefIdx), contact.getOrganization(), contact.getRole()).build());
+			
+		for (Impp impp : contact.getImpps())
+			pendingOperations.add(buildIMPP(newDataInsertBuilder(localID, backrefIdx), impp).build());
 		
 		if (contact.getNickName() != null)
 			pendingOperations.add(buildNickName(newDataInsertBuilder(localID, backrefIdx), contact.getNickName()).build());
@@ -530,7 +581,7 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 	}
 	
 	protected Builder buildEmail(Builder builder, ezvcard.property.Email email) {
-		int typeCode = Email.TYPE_OTHER;
+		int typeCode = 0;
 		String typeLabel = null;
 		
 		for (EmailType type : email.getTypes())
@@ -540,9 +591,13 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 				typeCode = Email.TYPE_WORK;
 			else if (type == Contact.EMAIL_TYPE_MOBILE)
 				typeCode = Email.TYPE_MOBILE;
+		if (typeCode == 0) {
+			if (email.getTypes().isEmpty())
+				typeCode = Email.TYPE_OTHER;
 			else {
 				typeCode = Email.TYPE_CUSTOM;
-				typeLabel = xNameToLabel(type.getValue());
+				typeLabel = xNameToLabel(email.getTypes().iterator().next().getValue());
+			}
 		}
 		
 		builder = builder
@@ -560,6 +615,69 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 			.withValue(Photo.PHOTO, photo);
 	}
 	
+	protected Builder buildOrganization(Builder builder, String organization, String role) {
+		return builder
+				.withValue(Data.MIMETYPE, Organization.CONTENT_ITEM_TYPE)
+				.withValue(Organization.COMPANY, organization)
+				.withValue(Organization.TITLE, role);
+	}
+
+	protected Builder buildIMPP(Builder builder, Impp impp) {
+		int typeCode = 0;
+		String typeLabel = null;
+		for (ImppType type : impp.getTypes())
+			if (type == ImppType.HOME)
+				typeCode = Im.TYPE_HOME;
+			else if (type == ImppType.WORK || type == ImppType.BUSINESS)
+				typeCode = Im.TYPE_WORK;
+		if (typeCode == 0)
+			if (impp.getTypes().isEmpty())
+				typeCode = Im.TYPE_OTHER;
+			else {
+				typeCode = Im.TYPE_CUSTOM;
+				typeLabel = xNameToLabel(impp.getTypes().iterator().next().getValue());
+			}
+		
+		int protocolCode;
+		String protocolLabel = null;
+		if (impp.isAim())
+			protocolCode = Im.PROTOCOL_AIM;
+		else if (impp.isMsn())
+			protocolCode = Im.PROTOCOL_MSN;
+		else if (impp.isYahoo())
+			protocolCode = Im.PROTOCOL_YAHOO;
+		else if (impp.isSkype())
+			protocolCode = Im.PROTOCOL_SKYPE;
+		else if (impp.getProtocol().equalsIgnoreCase("qq"))
+			protocolCode = Im.PROTOCOL_QQ;
+		else if (impp.getProtocol().equalsIgnoreCase("google-talk"))
+			protocolCode = Im.PROTOCOL_GOOGLE_TALK;
+		else if (impp.isIcq())
+			protocolCode = Im.PROTOCOL_ICQ;
+		else if (impp.isXmpp())
+			protocolCode = Im.PROTOCOL_JABBER;
+		else if (impp.getProtocol().equalsIgnoreCase("netmeeting"))
+			protocolCode = Im.PROTOCOL_NETMEETING;
+		else {
+			String protocol = impp.getProtocol();
+			if (protocol == null)
+				protocol = "unknown";
+			protocolCode = Im.PROTOCOL_CUSTOM;
+			protocolLabel = protocol;
+		}
+		
+		builder = builder
+			.withValue(Data.MIMETYPE, Im.CONTENT_ITEM_TYPE)
+			.withValue(Im.DATA, impp.getHandle())
+			.withValue(Im.TYPE, typeCode)
+			.withValue(Im.PROTOCOL, protocolCode);
+		if (typeLabel != null)
+			builder = builder.withValue(Im.LABEL, typeLabel);
+		if (protocolLabel != null)
+			builder = builder.withValue(Im.CUSTOM_PROTOCOL, protocolLabel);
+		return builder;
+	}
+
 	protected Builder buildNickName(Builder builder, String nickName) {
 		return builder
 			.withValue(Data.MIMETYPE, Nickname.CONTENT_ITEM_TYPE)
@@ -594,16 +712,19 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 			formattedAddress = StringUtils.join(lines, "\n");
 		}
 			
-		int typeCode = StructuredPostal.TYPE_OTHER;
+		int typeCode = 0;
 		String typeLabel = null;
 		for (AddressType type : address.getTypes())
 			if (type == AddressType.HOME)
 				typeCode = StructuredPostal.TYPE_HOME;
 			else if (type == AddressType.WORK)
 				typeCode = StructuredPostal.TYPE_WORK;
+		if (typeCode == 0)
+			if (address.getTypes().isEmpty())
+				typeCode = StructuredPostal.TYPE_OTHER;
 			else {
 				typeCode = StructuredPostal.TYPE_CUSTOM;
-				typeLabel = xNameToLabel(type.getValue());
+				typeLabel = xNameToLabel(address.getTypes().iterator().next().getValue());
 			}
 		
 		builder = builder
@@ -629,9 +750,10 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 	}
 	
 	protected Builder buildEvent(Builder builder, DateOrTimeProperty date, int type) {
+		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
 		return builder
 			.withValue(Data.MIMETYPE, CommonDataKinds.Event.CONTENT_ITEM_TYPE)
 			.withValue(CommonDataKinds.Event.TYPE, type) 
-			.withValue(CommonDataKinds.Event.START_DATE, date.getText());
+			.withValue(CommonDataKinds.Event.START_DATE, formatter.format(date.getDate()));
 	}
 }

src/at/bitfire/davdroid/resource/LocalCalendar.java

@@ -60,7 +60,6 @@ import android.provider.CalendarContract.Events;
 import android.provider.CalendarContract.Reminders;
 import android.provider.ContactsContract;
 import android.util.Log;
-import at.bitfire.davdroid.syncadapter.DavSyncAdapter;
 import at.bitfire.davdroid.syncadapter.ServerInfo;
 
 public class LocalCalendar extends LocalCollection<Event> {
@@ -168,26 +167,6 @@ public class LocalCalendar extends LocalCollection<Event> {
 	
 	/* content provider (= database) querying */
 
-	@Override
-	public Event findById(long localID, String remoteName, String eTag, boolean populate) throws RemoteException {
-		Event e = new Event(localID, remoteName, eTag);
-		if (populate)
-			populate(e);
-		return e;
-	}
-	
-	@Override
-	public Event findByRemoteName(String remoteName) throws RemoteException {
-		Cursor cursor = providerClient.query(entriesURI(),
-				new String[] { entryColumnID(), entryColumnRemoteName(), entryColumnETag() },
-				Events.CALENDAR_ID + "=? AND " + entryColumnRemoteName() + "=?",
-				new String[] { String.valueOf(id), remoteName }, null);
-		if (cursor != null && cursor.moveToNext())
-			return new Event(cursor.getLong(0), cursor.getString(1), cursor.getString(2));
-		else
-			return null;
-	}
-
 	@Override
 	public void populate(Resource resource) throws RemoteException {
 		Event e = (Event)resource;
@@ -398,18 +377,15 @@ public class LocalCalendar extends LocalCollection<Event> {
 	}
 
 	
+	/* create/update/delete */
+	
+	public Event newResource(long localID, String resourceName, String eTag) {
+		return new Event(localID, resourceName, eTag);
+	}
+	
+	
 	/* private helper methods */
 	
-	@Override
-	protected String fileExtension() {
-		return ".ics";
-	}
-	
-	@Override
-	protected String randomUID() {
-		return DavSyncAdapter.generateUID();
-	}
-	
 	protected static Uri calendarsURI(Account account) {
 		return Calendars.CONTENT_URI.buildUpon().appendQueryParameter(Calendars.ACCOUNT_NAME, account.name)
 				.appendQueryParameter(Calendars.ACCOUNT_TYPE, account.type)

src/at/bitfire/davdroid/resource/LocalCollection.java

@@ -80,7 +80,7 @@ public abstract class LocalCollection<T extends Resource> {
 				where, null, null);
 		LinkedList<T> dirty = new LinkedList<T>();
 		while (cursor != null && cursor.moveToNext())
-			dirty.add(findById(cursor.getLong(0), cursor.getString(1), cursor.getString(2), true));
+			dirty.add(findById(cursor.getLong(0), true));
 		return dirty.toArray(new Resource[0]);
 	}
 
@@ -93,7 +93,7 @@ public abstract class LocalCollection<T extends Resource> {
 				where, null, null);
 		LinkedList<T> deleted = new LinkedList<T>();
 		while (cursor != null && cursor.moveToNext())
-			deleted.add(findById(cursor.getLong(0), cursor.getString(1), cursor.getString(2), false));
+			deleted.add(findById(cursor.getLong(0), false));
 		return deleted.toArray(new Resource[0]);
 	}
 
@@ -106,15 +106,17 @@ public abstract class LocalCollection<T extends Resource> {
 				where, null, null);
 		LinkedList<T> fresh = new LinkedList<T>();
 		while (cursor != null && cursor.moveToNext()) {
-			String uid = randomUID(),
+			T resource = findById(cursor.getLong(0), true);
+			/*String	uid = randomUID(),
 					resourceName = uid.replace("@", "_") + fileExtension();
-			T resource = findById(cursor.getLong(0), resourceName, null, true);
+			resource.setUid(uid);*/
-			resource.setUid(uid);
+			resource.initialize();
 
 			// new record: set generated UID + remote file name in database
 			pendingOperations.add(ContentProviderOperation
 					.newUpdate(ContentUris.withAppendedId(entriesURI(), resource.getLocalID()))
-					.withValue(entryColumnRemoteName(), resourceName)
+					.withValue(entryColumnUID(), resource.getUid())
+					.withValue(entryColumnRemoteName(), resource.getName())
 					.build());
 			
 			fresh.add(resource);
@@ -122,14 +124,39 @@ public abstract class LocalCollection<T extends Resource> {
 		return fresh.toArray(new Resource[0]);
 	}
 	
-	abstract public T findById(long localID, String resourceName, String eTag, boolean populate) throws RemoteException;
+	public T findById(long localID, boolean populate) throws RemoteException {
-	abstract public T findByRemoteName(String name) throws RemoteException;
+		Cursor cursor = providerClient.query(ContentUris.withAppendedId(entriesURI(), localID),
+				new String[] { entryColumnRemoteName(), entryColumnETag() }, null, null, null);
+		if (cursor != null && cursor.moveToNext()) {
+			T resource = newResource(localID, cursor.getString(0), cursor.getString(1));
+			if (populate)
+				populate(resource);
+			return resource;
+		} else
+			return null;
+	}
+	
+	public T findByRemoteName(String remoteName, boolean populate) throws RemoteException {
+		Cursor cursor = providerClient.query(entriesURI(),
+				new String[] { entryColumnID(), entryColumnRemoteName(), entryColumnETag() },
+				entryColumnRemoteName() + "=?", new String[] { remoteName }, null);
+		if (cursor != null && cursor.moveToNext()) {
+			T resource = newResource(cursor.getLong(0), cursor.getString(1), cursor.getString(2));
+			if (populate)
+				populate(resource);
+			return resource;
+		} else
+			return null;
+	}
+
 
 	public abstract void populate(Resource record) throws RemoteException;
 
 	
 	// create/update/delete
 	
+	abstract public T newResource(long localID, String resourceName, String eTag);
+	
 	public void add(Resource resource) {
 		int idx = pendingOperations.size();
 		pendingOperations.add(
@@ -141,7 +168,7 @@ public abstract class LocalCollection<T extends Resource> {
 	}
 	
 	public void updateByRemoteName(Resource remoteResource) throws RemoteException, ValidationException {
-		T localResource = findByRemoteName(remoteResource.getName());
+		T localResource = findByRemoteName(remoteResource.getName(), false);
 		
 		pendingOperations.add(
 				buildEntry(ContentProviderOperation.newUpdate(ContentUris.withAppendedId(entriesURI(), localResource.getLocalID())), remoteResource)
@@ -179,10 +206,6 @@ public abstract class LocalCollection<T extends Resource> {
 	
 	// helpers
 	
-	protected abstract String fileExtension();
-	
-	protected abstract String randomUID();
-	
 	protected Uri syncAdapterURI(Uri baseURI) {
 		return baseURI.buildUpon()
 				.appendQueryParameter(entryColumnAccountType(), account.type)

src/at/bitfire/davdroid/resource/Resource.java

@@ -36,6 +36,9 @@ public abstract class Resource {
 		this.localID = localID;
 	}
 	
+	// sets resource name and UID
+	public abstract void initialize();
+	
 	public abstract void parseEntity(InputStream entity) throws IOException, ParserException, VCardException;
 	public abstract String toEntity() throws IOException, ValidationException;
 }

src/at/bitfire/davdroid/syncadapter/SyncManager.java

@@ -128,7 +128,7 @@ public class SyncManager {
 			return;
 		
 		for (Resource remoteResource : remoteResources) {
-			Resource localResource = local.findByRemoteName(remoteResource.getName());
+			Resource localResource = local.findByRemoteName(remoteResource.getName(), true);
 			if (localResource == null)
 				resourcesToAdd.add(remoteResource);
 			else if (localResource.getETag() == null || !localResource.getETag().equals(remoteResource.getETag()))