package org.francho.unutopia.mycontenterprovider.data;
import org.francho.unutopia.mycontenterprovider.data.MembersContract.UsersTable;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;
import android.text.TextUtils;
public class MyContentProvider extends ContentProvider {
private MyDbHelper mDbHelper;
private static final UriMatcher sUriMatcher;
private static final int TYPE_USERS_COLLECTION = 1;
private static final int TYPE_USERS_ITEM = 2;
static {
sUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
sUriMatcher.addURI(MembersContract.AUTHORITY, "users", TYPE_USERS_COLLECTION);
sUriMatcher.addURI(MembersContract.AUTHORITY, "users/#", TYPE_USERS_ITEM);
}
@Override
public boolean onCreate() {
mDbHelper = new MyDbHelper(getContext());
return true;
}
@Override
public String getType(Uri uri) {
switch(sUriMatcher.match(uri)) {
case TYPE_USERS_COLLECTION:
return "android.cursor.dir/vnd.org.francho.unutopia.mycontentprovider.users";
case TYPE_USERS_ITEM:
return "android.cursor.item/vnd.org.francho.unutopia.mycontentprovider.users";
default:
return null;
}
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
int count=0;
final SQLiteDatabase db = mDbHelper.getWritableDatabase();
switch(sUriMatcher.match(uri)) {
case TYPE_USERS_COLLECTION:
count = db.delete(UsersTable.TABLE_NAME, selection, selectionArgs);
break;
case TYPE_USERS_ITEM:
String id = uri.getPathSegments().get(1);
count = db.delete(UsersTable.TABLE_NAME, UsersTable._ID
+ " = "
+ id
+ (!TextUtils.isEmpty(selection) ? " AND (" + selection
+ ')' : ""), selectionArgs);
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
getContext().getContentResolver().notifyChange(uri, null);
return count;
}
@Override
public int update(Uri uri, ContentValues values, String selection,String[] selectionArgs) {
int count = 0;
final SQLiteDatabase db = mDbHelper.getWritableDatabase();
switch(sUriMatcher.match(uri)) {
case TYPE_USERS_COLLECTION:
count = db.update(UsersTable.TABLE_NAME, values, selection,selectionArgs);
break;
case TYPE_USERS_ITEM:
String id = uri.getPathSegments().get(1);
count = db.update(UsersTable.TABLE_NAME, values, UsersTable._ID
+ " = "
+ id
+ (!TextUtils.isEmpty(selection) ? " AND (" + selection
+ ')' : ""), selectionArgs);
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
getContext().getContentResolver().notifyChange(uri, null);
return count;
}
@Override
public Uri insert(Uri uri, ContentValues values) {
int uriType = sUriMatcher.match(uri);
if( uriType != TYPE_USERS_COLLECTION) {
return null;
}
final SQLiteDatabase db = mDbHelper.getWritableDatabase();
long id = db.insert(UsersTable.TABLE_NAME, null, values);
Uri newUri = UsersTable.getUri(id);
return newUri;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
final SQLiteDatabase db = mDbHelper.getReadableDatabase();
switch(sUriMatcher.match(uri)) {
case TYPE_USERS_ITEM:
String id = uri.getLastPathSegment();
if(!TextUtils.isEmpty(selection)) {
selection += " AND";
} else {
selection = "";
}
selection += UsersTable._ID + "==" + id;
String table = UsersTable.TABLE_NAME;
String groupBy = null;
String having = null;
Cursor cursor = db.query(table, projection, selection, selectionArgs, groupBy, having, sortOrder);
return cursor;
default:
return null;
}
}
}