Example usage for java.util ConcurrentModificationException ConcurrentModificationException

Introduction

In this page you can find the example usage for java.util ConcurrentModificationException ConcurrentModificationException.

Prototype

public ConcurrentModificationException(Throwable cause) 

Source Link

Document

Constructs a new exception with the specified cause and a detail message of (cause==null ?

Usage

From source file:de.otto.jsonhome.example.products.ProductService.java

public Product createOrUpdateProduct(final Product product, final Product expected) {
    final boolean replaced = PRODUCTS.replace(product.getId(), expected, product);
    if (replaced) {
        return expected;
    } else {//from  w  w w .  j av  a 2 s .  co  m
        throw new ConcurrentModificationException("Product was concurrently modified");
    }
}

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From source file:jobhunter.persistence.Persistence.java

private void _save(final File file, final Boolean rewrite) {
    if (wasModified(file) && !rewrite)
        throw new ConcurrentModificationException("File has been modified");

    ApplicationState.changesPending(false);
    zip(file);/*from   w  w  w  .  j av a2s. co  m*/
}

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From source file:com.appenginefan.toolkit.common.WebConnectionClient.java

/**
 * Starts a thread (through the executor) that connects to the server on a regular base
 *//*w w w  .  ja v a  2 s  .  c o  m*/
public synchronized void open(Receiver receiver) {
    if (isStarted) {
        throw new ConcurrentModificationException("Cannot call open more than once!");
    }
    isStarted = true;
    this.receiver = receiver;
    env.execute(this);
}

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From source file:org.libreplan.importers.OrderImporterMPXJ.java

private String getCode(EntityNameEnum entity) {

    String code = entitySequenceDAO.getNextEntityCode(entity);

    if (code == null) {
        throw new ConcurrentModificationException("Could not retrieve Code. Please, try again later");
    }/*from  w  ww .  ja  v a2 s .c  om*/

    return code;
}

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From source file:de.otto.jsonhome.example.products.ProductsController.java

@RequestMapping(value = "/{productId}", method = RequestMethod.PUT, consumes = { "application/example-product",
        "application/json" }, produces = { "application/example-product", "application/json" })
@ResponseBody/* w w w  . j  a v  a2 s  . c  o m*/
@Rel("/rel/product")
@Hints(preconditionReq = ETAG)
public Map<String, ?> putProduct(final @PathVariable long productId,
        final @RequestBody Map<String, String> document, final HttpServletRequest request,
        final HttpServletResponse response) throws IOException {
    final String expectedETag = request.getHeader("If-Match");
    final Product expected = productService.findProduct(productId);
    if (expected == null || expectedETag.equals("*") || expected.getETag().equals(expectedETag)) {
        final Product product = jsonToProduct(productId, document);
        final Product previous = productService.createOrUpdateProduct(product, expected);
        response.setStatus(previous == null ? SC_CREATED : SC_OK);
        return productToJson(product, request.getContextPath());
    } else {
        throw new ConcurrentModificationException("product was concurrently modified.");
    }
}

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From source file:org.libreplan.ws.resources.impl.ResourceServiceREST.java

private void setDefaultCode(EntityNameEnum entityName, IntegrationEntity entity)
        throws ConcurrentModificationException {
    String code = entitySequenceDAO.getNextEntityCode(entityName);
    if (code == null) {
        throw new ConcurrentModificationException("Could not get code, please try again later");
    }//from w ww  .j av a2  s.  c  o m
    entity.setCode(code);
    entity.setCodeAutogenerated(true);
}

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From source file:org.nuxeo.ecm.core.storage.sql.Fragment.java

/**
 * Checks that access to the fragment is possible. Called internally before
 * a get, so that invalidated fragments can be refetched.
 *
 * @throws StorageException/*from   ww w. ja v  a  2  s. c o m*/
 */
protected void accessed() throws StorageException {
    switch (state) {
    case DETACHED:
    case ABSENT:
    case PRISTINE:
    case CREATED:
    case MODIFIED:
    case DELETED:
        break;
    case INVALIDATED_MODIFIED:
        State newState = refetch();
        // logStateTransition(newState);
        state = newState;
        break;
    case INVALIDATED_DELETED:
        throw new ConcurrentModificationException("Accessing a concurrently deleted value");
    }
}

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From source file:org.nuxeo.ecm.core.storage.sql.Fragment.java

/**
 * Marks the fragment modified. Called internally after a put/set.
 *///from   w w w  .ja  va 2  s.  c om
protected void markModified() {
    switch (state) {
    case ABSENT:
        context.pristine.remove(id);
        context.modified.put(id, this);
        // logStateTransition(State.CREATED); // <---
        state = State.CREATED;
        break;
    case INVALIDATED_MODIFIED:
        // can only happen if overwrite all invalidated (array)
        // fall through
    case PRISTINE:
        context.pristine.remove(id);
        context.modified.put(id, this);
        // logStateTransition(State.MODIFIED);
        state = State.MODIFIED;
        break;
    case DETACHED:
    case CREATED:
    case MODIFIED:
    case DELETED:
        break;
    case INVALIDATED_DELETED:
        throw new ConcurrentModificationException("Modifying a concurrently deleted value");
    }
}

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From source file:org.zlogic.vogon.web.controller.TransactionsController.java

/**
 * Updates or creates a new transaction/*ww  w  .ja  v a  2  s.c  om*/
 *
 * @param transaction the updated transaction
 * @param user the authenticated user
 * @return the transactions from database after update
 */
@RequestMapping(method = RequestMethod.POST, produces = "application/json")
public @ResponseBody FinanceTransactionJson submitTransaction(@RequestBody FinanceTransactionJson transaction,
        @AuthenticationPrincipal VogonSecurityUser user) {
    FinanceTransaction existingTransaction = transactionRepository.findByOwnerAndId(user.getUser(),
            transaction.getId());
    //Merge with database
    if (existingTransaction == null)
        existingTransaction = new FinanceTransaction(user.getUser(), transaction);
    else
        existingTransaction.merge(transaction);
    List<TransactionComponent> removedComponents = new LinkedList<>(existingTransaction.getComponents());
    for (TransactionComponentJson newComponent : transaction.getComponentsJson()) {
        FinanceAccount existingAccount = accountRepository.findByOwnerAndId(user.getUser(),
                newComponent.getAccountId());
        if (!existingTransaction.getComponents().contains(newComponent)) {
            TransactionComponent createdComponent = new TransactionComponent(existingAccount,
                    existingTransaction, newComponent.getRawAmount());
            em.persist(createdComponent);
            existingTransaction.addComponent(createdComponent);
        } else {
            TransactionComponent existingComponent = existingTransaction.getComponents()
                    .get(existingTransaction.getComponents().indexOf(newComponent));
            if (newComponent.getVersion() != existingComponent.getVersion())
                throw new ConcurrentModificationException(
                        messages.getString("TRANSACTION_WAS_ALREADY_UPDATED"));
            existingTransaction.updateComponentAccount(existingComponent, existingAccount);
            existingTransaction.updateComponentRawAmount(existingComponent, newComponent.getAmount());
            removedComponents.remove(existingComponent);
        }
        existingTransaction = transactionRepository.save(existingTransaction);
        accountRepository.save(existingAccount);
    }
    //Remove deleted components
    for (TransactionComponent removedComponent : removedComponents)
        existingTransaction.removeComponent(removedComponent);
    existingTransaction = transactionRepository.saveAndFlush(existingTransaction);
    accountRepository.flush();
    return initializationHelper.initializeTransaction(existingTransaction);
}

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From source file:org.springframework.data.neo4j.fieldaccess.DetachedEntityState.java

private void checkConcurrentModification(final Object entity,
        final Map.Entry<Neo4jPersistentProperty, ExistingValue> entry, final Neo4jPersistentProperty property,
        final MappingPolicy mappingPolicy) {
    final ExistingValue previousValue = entry.getValue();
    if (previousValue.mustCheckConcurrentModification()) {
        final Object nodeValue = unwrap(delegate.getValue(property, mappingPolicy));
        if (!ObjectUtils.nullSafeEquals(nodeValue, previousValue.value)) {
            throw new ConcurrentModificationException("Node " + entity + " field " + property
                    + " changed in between previous " + previousValue + " current " + nodeValue); // todo or just overwrite
        }/* www  .j av  a  2  s  . c om*/
    }
}

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