/**

* Copyright 2013 Ronald W Hoffman

*

* 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 JavaBitcoin;

import java.io.IOException;

/**

* Transactions are stored in a memory pool while they are relayed to other nodes

* in the network. They are purged periodically to make room for newer transactions.

*/

public class StoredTransaction {

/** Serialized transaction */

private byte[] txData;

/** Transaction hash */

private Sha256Hash hash;

/** Parent transaction hash */

private Sha256Hash parentHash;

/** Time when transaction was broadcast */

private long txTimeStamp;

/**

* Creates a new stored transaction

*

* @param tx Transaction

* @throws VerificationException Transaction verification failed

*/

public StoredTransaction(Transaction tx) throws VerificationException {

hash = tx.getHash();

txData = tx.getBytes();

txTimeStamp = System.currentTimeMillis()/1000;

}

/**

* Return the transaction

*

* @return Transaction

*/

public Transaction getTransaction() {

Transaction tx = null;

try {

SerializedInputStream inStream = new SerializedInputStream(txData, 0, txData.length);

tx = new Transaction(inStream);

} catch (IOException|VerificationException exc) {

// Should never happen at this point

}

return tx;

}

/**

* Returns the transaction hash

*

* @return Transaction hash

*/

public Sha256Hash getHash() {

return hash;

}

/**

* Returns the parent transaction hash. The parent is a transaction whose output is

* being spent by this transaction. This is used when tracking orphan transactions.

*

* @return Parent transaction hash or null if there is no parent

*/

public Sha256Hash getParent() {

return parentHash;

}

/**

* Sets the parent transaction hash

*

* @param parentHash Parent transaction hash

*/

public void setParent(Sha256Hash parentHash) {

this.parentHash = parentHash;

}

/**

* Returns the serialized transaction data

*

* @return Serialized byte stream

*/

public byte[] getBytes() {

return txData;

}

/**

* Returns the transaction timestamp

*

* @return Time when transaction was broadcast

*/

public long getTimeStamp() {

return txTimeStamp;

}

}