286 lines
8.7 KiB
Java
286 lines
8.7 KiB
Java
|
/*
|
||
|
|
* Copyright (C) 2006 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* 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 android.database;
|
||
|
|
|
||
|
|
import android.compat.annotation.UnsupportedAppUsage;
|
||
|
|
import android.os.Binder;
|
||
|
|
import android.os.Bundle;
|
||
|
|
import android.os.IBinder;
|
||
|
|
import android.os.Parcel;
|
||
|
|
import android.os.Parcelable;
|
||
|
|
import android.os.RemoteException;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Native implementation of the bulk cursor. This is only for use in implementing
|
||
|
|
* IPC, application code should use the Cursor interface.
|
||
|
|
*
|
||
|
|
* {@hide}
|
||
|
|
*/
|
||
|
|
public abstract class BulkCursorNative extends Binder implements IBulkCursor
|
||
|
|
{
|
||
|
|
public BulkCursorNative()
|
||
|
|
{
|
||
|
|
attachInterface(this, descriptor);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Cast a Binder object into a content resolver interface, generating
|
||
|
|
* a proxy if needed.
|
||
|
|
*/
|
||
|
|
static public IBulkCursor asInterface(IBinder obj)
|
||
|
|
{
|
||
|
|
if (obj == null) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
IBulkCursor in = (IBulkCursor)obj.queryLocalInterface(descriptor);
|
||
|
|
if (in != null) {
|
||
|
|
return in;
|
||
|
|
}
|
||
|
|
|
||
|
|
return new BulkCursorProxy(obj);
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public boolean onTransact(int code, Parcel data, Parcel reply, int flags)
|
||
|
|
throws RemoteException {
|
||
|
|
try {
|
||
|
|
switch (code) {
|
||
|
|
case GET_CURSOR_WINDOW_TRANSACTION: {
|
||
|
|
data.enforceInterface(IBulkCursor.descriptor);
|
||
|
|
int startPos = data.readInt();
|
||
|
|
CursorWindow window = getWindow(startPos);
|
||
|
|
reply.writeNoException();
|
||
|
|
if (window == null) {
|
||
|
|
reply.writeInt(0);
|
||
|
|
} else {
|
||
|
|
reply.writeInt(1);
|
||
|
|
window.writeToParcel(reply, Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
case DEACTIVATE_TRANSACTION: {
|
||
|
|
data.enforceInterface(IBulkCursor.descriptor);
|
||
|
|
deactivate();
|
||
|
|
reply.writeNoException();
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
case CLOSE_TRANSACTION: {
|
||
|
|
data.enforceInterface(IBulkCursor.descriptor);
|
||
|
|
close();
|
||
|
|
reply.writeNoException();
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
case REQUERY_TRANSACTION: {
|
||
|
|
data.enforceInterface(IBulkCursor.descriptor);
|
||
|
|
IContentObserver observer =
|
||
|
|
IContentObserver.Stub.asInterface(data.readStrongBinder());
|
||
|
|
int count = requery(observer);
|
||
|
|
reply.writeNoException();
|
||
|
|
reply.writeInt(count);
|
||
|
|
reply.writeBundle(getExtras());
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
case ON_MOVE_TRANSACTION: {
|
||
|
|
data.enforceInterface(IBulkCursor.descriptor);
|
||
|
|
int position = data.readInt();
|
||
|
|
onMove(position);
|
||
|
|
reply.writeNoException();
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
case GET_EXTRAS_TRANSACTION: {
|
||
|
|
data.enforceInterface(IBulkCursor.descriptor);
|
||
|
|
Bundle extras = getExtras();
|
||
|
|
reply.writeNoException();
|
||
|
|
reply.writeBundle(extras);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
case RESPOND_TRANSACTION: {
|
||
|
|
data.enforceInterface(IBulkCursor.descriptor);
|
||
|
|
Bundle extras = data.readBundle();
|
||
|
|
Bundle returnExtras = respond(extras);
|
||
|
|
reply.writeNoException();
|
||
|
|
reply.writeBundle(returnExtras);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} catch (Exception e) {
|
||
|
|
DatabaseUtils.writeExceptionToParcel(reply, e);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return super.onTransact(code, data, reply, flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
public IBinder asBinder()
|
||
|
|
{
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
final class BulkCursorProxy implements IBulkCursor {
|
||
|
|
@UnsupportedAppUsage
|
||
|
|
private IBinder mRemote;
|
||
|
|
private Bundle mExtras;
|
||
|
|
|
||
|
|
public BulkCursorProxy(IBinder remote)
|
||
|
|
{
|
||
|
|
mRemote = remote;
|
||
|
|
mExtras = null;
|
||
|
|
}
|
||
|
|
|
||
|
|
public IBinder asBinder()
|
||
|
|
{
|
||
|
|
return mRemote;
|
||
|
|
}
|
||
|
|
|
||
|
|
public CursorWindow getWindow(int position) throws RemoteException
|
||
|
|
{
|
||
|
|
Parcel data = Parcel.obtain();
|
||
|
|
Parcel reply = Parcel.obtain();
|
||
|
|
try {
|
||
|
|
data.writeInterfaceToken(IBulkCursor.descriptor);
|
||
|
|
data.writeInt(position);
|
||
|
|
|
||
|
|
mRemote.transact(GET_CURSOR_WINDOW_TRANSACTION, data, reply, 0);
|
||
|
|
DatabaseUtils.readExceptionFromParcel(reply);
|
||
|
|
|
||
|
|
CursorWindow window = null;
|
||
|
|
if (reply.readInt() == 1) {
|
||
|
|
window = CursorWindow.newFromParcel(reply);
|
||
|
|
}
|
||
|
|
return window;
|
||
|
|
} finally {
|
||
|
|
data.recycle();
|
||
|
|
reply.recycle();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void onMove(int position) throws RemoteException {
|
||
|
|
Parcel data = Parcel.obtain();
|
||
|
|
Parcel reply = Parcel.obtain();
|
||
|
|
try {
|
||
|
|
data.writeInterfaceToken(IBulkCursor.descriptor);
|
||
|
|
data.writeInt(position);
|
||
|
|
|
||
|
|
mRemote.transact(ON_MOVE_TRANSACTION, data, reply, 0);
|
||
|
|
DatabaseUtils.readExceptionFromParcel(reply);
|
||
|
|
} finally {
|
||
|
|
data.recycle();
|
||
|
|
reply.recycle();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void deactivate() throws RemoteException
|
||
|
|
{
|
||
|
|
Parcel data = Parcel.obtain();
|
||
|
|
Parcel reply = Parcel.obtain();
|
||
|
|
try {
|
||
|
|
data.writeInterfaceToken(IBulkCursor.descriptor);
|
||
|
|
|
||
|
|
mRemote.transact(DEACTIVATE_TRANSACTION, data, reply, 0);
|
||
|
|
DatabaseUtils.readExceptionFromParcel(reply);
|
||
|
|
} finally {
|
||
|
|
data.recycle();
|
||
|
|
reply.recycle();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void close() throws RemoteException
|
||
|
|
{
|
||
|
|
Parcel data = Parcel.obtain();
|
||
|
|
Parcel reply = Parcel.obtain();
|
||
|
|
try {
|
||
|
|
data.writeInterfaceToken(IBulkCursor.descriptor);
|
||
|
|
|
||
|
|
mRemote.transact(CLOSE_TRANSACTION, data, reply, 0);
|
||
|
|
DatabaseUtils.readExceptionFromParcel(reply);
|
||
|
|
} finally {
|
||
|
|
data.recycle();
|
||
|
|
reply.recycle();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public int requery(IContentObserver observer) throws RemoteException {
|
||
|
|
Parcel data = Parcel.obtain();
|
||
|
|
Parcel reply = Parcel.obtain();
|
||
|
|
try {
|
||
|
|
data.writeInterfaceToken(IBulkCursor.descriptor);
|
||
|
|
data.writeStrongInterface(observer);
|
||
|
|
|
||
|
|
boolean result = mRemote.transact(REQUERY_TRANSACTION, data, reply, 0);
|
||
|
|
DatabaseUtils.readExceptionFromParcel(reply);
|
||
|
|
|
||
|
|
int count;
|
||
|
|
if (!result) {
|
||
|
|
count = -1;
|
||
|
|
} else {
|
||
|
|
count = reply.readInt();
|
||
|
|
mExtras = reply.readBundle();
|
||
|
|
}
|
||
|
|
return count;
|
||
|
|
} finally {
|
||
|
|
data.recycle();
|
||
|
|
reply.recycle();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public Bundle getExtras() throws RemoteException {
|
||
|
|
if (mExtras == null) {
|
||
|
|
Parcel data = Parcel.obtain();
|
||
|
|
Parcel reply = Parcel.obtain();
|
||
|
|
try {
|
||
|
|
data.writeInterfaceToken(IBulkCursor.descriptor);
|
||
|
|
|
||
|
|
mRemote.transact(GET_EXTRAS_TRANSACTION, data, reply, 0);
|
||
|
|
DatabaseUtils.readExceptionFromParcel(reply);
|
||
|
|
|
||
|
|
mExtras = reply.readBundle();
|
||
|
|
} finally {
|
||
|
|
data.recycle();
|
||
|
|
reply.recycle();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return mExtras;
|
||
|
|
}
|
||
|
|
|
||
|
|
public Bundle respond(Bundle extras) throws RemoteException {
|
||
|
|
Parcel data = Parcel.obtain();
|
||
|
|
Parcel reply = Parcel.obtain();
|
||
|
|
try {
|
||
|
|
data.writeInterfaceToken(IBulkCursor.descriptor);
|
||
|
|
data.writeBundle(extras);
|
||
|
|
|
||
|
|
mRemote.transact(RESPOND_TRANSACTION, data, reply, 0);
|
||
|
|
DatabaseUtils.readExceptionFromParcel(reply);
|
||
|
|
|
||
|
|
Bundle returnExtras = reply.readBundle();
|
||
|
|
return returnExtras;
|
||
|
|
} finally {
|
||
|
|
data.recycle();
|
||
|
|
reply.recycle();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|