112 lines
4.6 KiB
Java
112 lines
4.6 KiB
Java
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.util.content;
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import static android.text.TextUtils.isEmpty;
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import android.annotation.TargetApi;
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import android.content.ContentResolver;
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import android.content.ContentValues;
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import android.database.Cursor;
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import android.net.Uri;
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import android.os.Build;
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import android.os.CancellationSignal;
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import org.mariotaku.twidere.util.ArrayUtils;
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import org.mariotaku.twidere.util.StrictModeUtils;
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import java.util.Collection;
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public class ContentResolverUtils {
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private static final int MAX_DELETE_COUNT = 128;
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public static <T> int bulkDelete(final ContentResolver resolver, final Uri uri, final String in_column,
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final Collection<T> col_values, final String extra_where, final boolean values_is_string) {
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StrictModeUtils.checkDiskIO();
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if (col_values == null) return 0;
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return bulkDelete(resolver, uri, in_column, col_values.toArray(), extra_where, values_is_string);
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}
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public static <T> int bulkDelete(final ContentResolver resolver, final Uri uri, final String in_column,
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final T[] col_values, final String extra_where, final boolean values_is_string) {
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StrictModeUtils.checkDiskIO();
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if (resolver == null || uri == null || isEmpty(in_column) || col_values == null || col_values.length == 0)
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return 0;
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final int col_values_length = col_values.length, blocks_count = col_values_length / MAX_DELETE_COUNT + 1;
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int rows_deleted = 0;
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for (int i = 0; i < blocks_count; i++) {
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final int start = i * MAX_DELETE_COUNT, end = Math.min(start + MAX_DELETE_COUNT, col_values_length);
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final String[] block = ArrayUtils.toStringArray(ArrayUtils.subArray(col_values, start, end));
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if (values_is_string) {
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final StringBuilder where = new StringBuilder(in_column + " IN(" + ArrayUtils.toStringForSQL(block)
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+ ")");
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if (!isEmpty(extra_where)) {
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where.append("AND " + extra_where);
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}
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rows_deleted += resolver.delete(uri, where.toString(), block);
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} else {
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final StringBuilder where = new StringBuilder(in_column + " IN("
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+ ArrayUtils.toString(block, ',', true) + ")");
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if (!isEmpty(extra_where)) {
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where.append("AND " + extra_where);
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}
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rows_deleted += resolver.delete(uri, where.toString(), null);
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}
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}
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return rows_deleted;
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}
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public static int bulkInsert(final ContentResolver resolver, final Uri uri, final Collection<ContentValues> values) {
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StrictModeUtils.checkDiskIO();
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if (values == null) return 0;
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return bulkInsert(resolver, uri, values.toArray(new ContentValues[values.size()]));
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}
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public static int bulkInsert(final ContentResolver resolver, final Uri uri, final ContentValues[] values) {
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StrictModeUtils.checkDiskIO();
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if (resolver == null || uri == null || values == null || values.length == 0) return 0;
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final int col_values_length = values.length, blocks_count = col_values_length / MAX_DELETE_COUNT + 1;
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int rows_inserted = 0;
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for (int i = 0; i < blocks_count; i++) {
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final int start = i * MAX_DELETE_COUNT, end = Math.min(start + MAX_DELETE_COUNT, col_values_length);
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final ContentValues[] block = new ContentValues[end - start];
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System.arraycopy(values, start, block, 0, end - start);
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rows_inserted += resolver.bulkInsert(uri, block);
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}
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return rows_inserted;
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}
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public static Cursor query(final ContentResolver resolver, final Uri uri, final String[] projection,
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final String selection, final String[] selectionArgs, final String sortOrder) {
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StrictModeUtils.checkDiskIO();
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return resolver.query(uri, projection, selection, selectionArgs, sortOrder);
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}
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@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
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public static Cursor query(final ContentResolver resolver, final Uri uri, final String[] projection,
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final String selection, final String[] selectionArgs, final String sortOrder,
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final CancellationSignal cancellationSignal) {
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StrictModeUtils.checkDiskIO();
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return resolver.query(uri, projection, selection, selectionArgs, sortOrder, cancellationSignal);
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}
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}
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