98 lines
3.4 KiB
Java
98 lines
3.4 KiB
Java
/*
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* Copyright (C) 2011 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.media;
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import android.compat.annotation.UnsupportedAppUsage;
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import android.content.ContentProviderClient;
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import android.content.ContentValues;
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import android.net.Uri;
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import android.os.RemoteException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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/**
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* A MediaScanner helper class which enables us to do lazy insertion on the
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* given provider. This class manages buffers internally and flushes when they
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* are full. Note that you should call flushAll() after using this class.
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* {@hide}
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*/
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public class MediaInserter {
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private final HashMap<Uri, List<ContentValues>> mRowMap =
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new HashMap<Uri, List<ContentValues>>();
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private final HashMap<Uri, List<ContentValues>> mPriorityRowMap =
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new HashMap<Uri, List<ContentValues>>();
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private final ContentProviderClient mProvider;
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private final int mBufferSizePerUri;
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public MediaInserter(ContentProviderClient provider, int bufferSizePerUri) {
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mProvider = provider;
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mBufferSizePerUri = bufferSizePerUri;
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}
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public void insert(Uri tableUri, ContentValues values) throws RemoteException {
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insert(tableUri, values, false);
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}
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public void insertwithPriority(Uri tableUri, ContentValues values) throws RemoteException {
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insert(tableUri, values, true);
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}
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private void insert(Uri tableUri, ContentValues values, boolean priority) throws RemoteException {
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HashMap<Uri, List<ContentValues>> rowmap = priority ? mPriorityRowMap : mRowMap;
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List<ContentValues> list = rowmap.get(tableUri);
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if (list == null) {
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list = new ArrayList<ContentValues>();
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rowmap.put(tableUri, list);
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}
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list.add(new ContentValues(values));
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if (list.size() >= mBufferSizePerUri) {
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flushAllPriority();
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flush(tableUri, list);
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}
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}
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@UnsupportedAppUsage
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public void flushAll() throws RemoteException {
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flushAllPriority();
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for (Uri tableUri : mRowMap.keySet()){
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List<ContentValues> list = mRowMap.get(tableUri);
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flush(tableUri, list);
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}
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mRowMap.clear();
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}
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private void flushAllPriority() throws RemoteException {
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for (Uri tableUri : mPriorityRowMap.keySet()){
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List<ContentValues> list = mPriorityRowMap.get(tableUri);
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flush(tableUri, list);
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}
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mPriorityRowMap.clear();
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}
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private void flush(Uri tableUri, List<ContentValues> list) throws RemoteException {
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if (!list.isEmpty()) {
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ContentValues[] valuesArray = new ContentValues[list.size()];
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valuesArray = list.toArray(valuesArray);
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mProvider.bulkInsert(tableUri, valuesArray);
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list.clear();
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}
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}
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}
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