/*
* Copyright 2014 Google Inc. All rights reserved.
*
* 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.android.example.leanback.data;
import java.util.List;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.net.Uri;
public abstract class AbstractVideoItemProvider extends ContentProvider {
private SQLiteOpenHelper mOpenHelper;
interface Tables {
String VIDEO_ITEM = "video_item";
}
interface Views {
}
private static final int VIDEOITEM = 0;
private static final int VIDEOITEM__ID = 1;
private static final UriMatcher sUriMatcher = buildUriMatcher();
private static UriMatcher buildUriMatcher() {
final UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH);
final String authority = VideoItemContract.CONTENT_AUTHORITY;
matcher.addURI(authority, "videoitem", VIDEOITEM);
matcher.addURI(authority, "videoitem/#", VIDEOITEM__ID);
return matcher;
}
@Override
public boolean onCreate() {
mOpenHelper = new VideoDatabase(getContext());
return true;
}
@Override
public String getType(Uri uri) {
final int match = sUriMatcher.match(uri);
switch (match) {
case VIDEOITEM:
return VideoItemContract.VideoItem.CONTENT_TYPE;
case VIDEOITEM__ID:
return VideoItemContract.VideoItem.CONTENT_ITEM_TYPE;
default:
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
}
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
final SQLiteDatabase db = mOpenHelper.getReadableDatabase();
final SelectionBuilder builder = buildQuerySelection(uri);
return builder.where(selection, selectionArgs).query(db, projection, sortOrder);
}
@Override
public Uri insert(Uri uri, ContentValues values) {
final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
final int match = sUriMatcher.match(uri);
switch (match) {
case VIDEOITEM: {
final long _id = db.insertOrThrow(Tables.VIDEO_ITEM, null, values);
return VideoItemContract.VideoItem.buildItemUri(_id);
}
default: {
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
}
}
@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
final SelectionBuilder builder = buildSelection(uri);
return builder.where(selection, selectionArgs).update(db, values);
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
final SelectionBuilder builder = buildSelection(uri);
return builder.where(selection, selectionArgs).delete(db);
}
private SelectionBuilder buildQuerySelection(Uri uri) {
final SelectionBuilder builder = new SelectionBuilder();
final List<String> paths = uri.getPathSegments();
final int match = sUriMatcher.match(uri);
switch (match) {
default: {
return buildSelection(uri, match, builder);
}
}
}
private SelectionBuilder buildSelection(Uri uri) {
final SelectionBuilder builder = new SelectionBuilder();
final int match = sUriMatcher.match(uri);
return buildSelection(uri, match, builder);
}
private SelectionBuilder buildSelection(Uri uri, int match, SelectionBuilder builder) {
final List<String> paths = uri.getPathSegments();
switch (match) {
case VIDEOITEM: {
return builder.table(Tables.VIDEO_ITEM);
}
case VIDEOITEM__ID: {
final String _id = paths.get(1);
return builder.table(Tables.VIDEO_ITEM).where(VideoItemContract.VideoItem._ID + "=?", _id);
}
default: {
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
}
}
}