120 lines
4.6 KiB
Java
120 lines
4.6 KiB
Java
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.content;
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import android.database.Cursor;
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import android.net.Uri;
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import android.os.RemoteException;
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import android.os.ParcelFileDescriptor;
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import android.content.res.AssetFileDescriptor;
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import java.io.FileNotFoundException;
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import java.util.ArrayList;
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/**
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* The public interface object used to interact with a {@link ContentProvider}. This is obtained by
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* calling {@link ContentResolver#acquireContentProviderClient}. This object must be released
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* using {@link #release} in order to indicate to the system that the {@link ContentProvider} is
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* no longer needed and can be killed to free up resources.
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*/
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public class ContentProviderClient {
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private final IContentProvider mContentProvider;
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private final ContentResolver mContentResolver;
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/**
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* @hide
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*/
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ContentProviderClient(ContentResolver contentResolver, IContentProvider contentProvider) {
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mContentProvider = contentProvider;
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mContentResolver = contentResolver;
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}
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/** see {@link ContentProvider#query} */
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public Cursor query(Uri url, String[] projection, String selection,
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String[] selectionArgs, String sortOrder) throws RemoteException {
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return mContentProvider.query(url, projection, selection, selectionArgs, sortOrder);
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}
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/** see {@link ContentProvider#getType} */
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public String getType(Uri url) throws RemoteException {
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return mContentProvider.getType(url);
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}
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/** see {@link ContentProvider#insert} */
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public Uri insert(Uri url, ContentValues initialValues)
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throws RemoteException {
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return mContentProvider.insert(url, initialValues);
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}
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/** see {@link ContentProvider#bulkInsert} */
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public int bulkInsert(Uri url, ContentValues[] initialValues) throws RemoteException {
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return mContentProvider.bulkInsert(url, initialValues);
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}
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/** see {@link ContentProvider#delete} */
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public int delete(Uri url, String selection, String[] selectionArgs)
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throws RemoteException {
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return mContentProvider.delete(url, selection, selectionArgs);
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}
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/** see {@link ContentProvider#update} */
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public int update(Uri url, ContentValues values, String selection,
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String[] selectionArgs) throws RemoteException {
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return mContentProvider.update(url, values, selection, selectionArgs);
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}
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/** see {@link ContentProvider#openFile} */
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public ParcelFileDescriptor openFile(Uri url, String mode)
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throws RemoteException, FileNotFoundException {
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return mContentProvider.openFile(url, mode);
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}
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/** see {@link ContentProvider#openAssetFile} */
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public AssetFileDescriptor openAssetFile(Uri url, String mode)
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throws RemoteException, FileNotFoundException {
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return mContentProvider.openAssetFile(url, mode);
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}
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/** see {@link ContentProvider#applyBatch} */
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public ContentProviderResult[] applyBatch(ArrayList<ContentProviderOperation> operations)
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throws RemoteException, OperationApplicationException {
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return mContentProvider.applyBatch(operations);
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}
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/**
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* Call this to indicate to the system that the associated {@link ContentProvider} is no
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* longer needed by this {@link ContentProviderClient}.
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* @return true if this was release, false if it was already released
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*/
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public boolean release() {
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return mContentResolver.releaseProvider(mContentProvider);
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}
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/**
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* Get a reference to the {@link ContentProvider} that is associated with this
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* client. If the {@link ContentProvider} is running in a different process then
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* null will be returned. This can be used if you know you are running in the same
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* process as a provider, and want to get direct access to its implementation details.
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*
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* @return If the associated {@link ContentProvider} is local, returns it.
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* Otherwise returns null.
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*/
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public ContentProvider getLocalContentProvider() {
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return ContentProvider.coerceToLocalContentProvider(mContentProvider);
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}
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}
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