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/*
* Copyright (C) 2015 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 com.example.android.asymmetricfingerprintdialog.server;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
/**
* An entity that represents a single transaction (purchase) of an item.
*/
public class Transaction {
/** The unique ID of the item of the purchase */
private final Long mItemId;
/** The unique user ID who made the transaction */
private final String mUserId;
public Transaction(String userId, long itemId) {
mItemId = itemId;
mUserId = userId;
}
public String getUserId() {
return mUserId;
}
public byte[] toByteArray() {
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
DataOutputStream dataOutputStream = null;
try {
dataOutputStream = new DataOutputStream(byteArrayOutputStream);
dataOutputStream.writeLong(mItemId);
dataOutputStream.writeUTF(mUserId);
return byteArrayOutputStream.toByteArray();
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
try {
if (dataOutputStream != null) {
dataOutputStream.close();
}
} catch (IOException ignore) {
}
try {
byteArrayOutputStream.close();
} catch (IOException ignore) {
}
}
}
}
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