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Commit 55978c3e authored by Jeff Sharkey's avatar Jeff Sharkey Committed by Automerger Merge Worker
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Merge "Deep copy arguments to avoid accidental mutation." into rvc-dev am: 4af9a76e

Change-Id: I0da6c319b379acf40ad70e89290f7af90d9f0700
parents c0b94305 4af9a76e
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+29 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ import com.android.internal.util.ArrayUtils;
import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.text.Collator;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
@@ -307,6 +308,34 @@ public class DatabaseUtils {
        return res.toString();
    }

    /**
     * Make a deep copy of the given argument list, ensuring that the returned
     * value is completely isolated from any changes to the original arguments.
     *
     * @hide
     */
    public static @Nullable Object[] deepCopyOf(@Nullable Object[] args) {
        if (args == null) return null;

        final Object[] res = new Object[args.length];
        for (int i = 0; i < args.length; i++) {
            final Object arg = args[i];

            if ((arg == null) || (arg instanceof Number) || (arg instanceof String)) {
                // When the argument is immutable, we can copy by reference
                res[i] = arg;
            } else if (arg instanceof byte[]) {
                // Need to deep copy blobs
                final byte[] castArg = (byte[]) arg;
                res[i] = Arrays.copyOf(castArg, castArg.length);
            } else {
                // Convert everything else to string, making it immutable
                res[i] = String.valueOf(arg);
            }
        }
        return res;
    }

    /**
     * Returns data type of the given object's value.
     *<p>
+4 −0
Original line number Diff line number Diff line
@@ -1066,6 +1066,10 @@ public final class SQLiteDatabase extends SQLiteClosable {
            throws SQLException {
        Objects.requireNonNull(sql);

        // Copy arguments to ensure that the caller doesn't accidentally change
        // the values used by future connections
        bindArgs = DatabaseUtils.deepCopyOf(bindArgs);

        synchronized (mLock) {
            throwIfNotOpenLocked();