Example usage for org.apache.commons.transaction.file FileResourceManager generatedUniqueTxId

Introduction

In this page you can find the example usage for org.apache.commons.transaction.file FileResourceManager generatedUniqueTxId.

Prototype

public String generatedUniqueTxId() throws ResourceManagerSystemException 

Source Link

Document

Generates a transaction identifier unique to this resource manager.

Usage

From source file:de.thorstenberger.examServer.dao.AbstractTransactionalFileIO.java

/**
 * Start a new transaction on the current working directory.
 *
 * @return an unique transaction id//from  www  .  ja  va2s . c  o m
 */
protected String startTransaction() {
    final FileResourceManager frm = resourceManagers.get(workingPath);
    try {
        final String txId = frm.generatedUniqueTxId();
        frm.startTransaction(txId);
        return txId;
    } catch (final ResourceManagerSystemException e) {
        throw new TaskModelPersistenceException("Could not start new transaction on directory " + workingPath,
                e);
    } catch (final ResourceManagerException e) {
        throw new TaskModelPersistenceException("Could not start new transaction on directory " + workingPath,
                e);
    }
}

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