Example usage for org.apache.commons.collections Transformer transform

Introduction

In this page you can find the example usage for org.apache.commons.collections Transformer transform.

Prototype

Object transform(Object input);

Source Link

Usage

From source file:com.phoenixst.plexus.traversals.PreOrderTraverser.java

/**
 *  Creates a new <code>PreOrderTraverser</code>.  If the
 *  <code>graph</code> argument is <code>null</code>, the
 *  specified <code>startNode</code> cannot be removed by {@link
 *  #remove}./*from   ww  w. jav a 2s.  co  m*/
 */
public PreOrderTraverser(Object startNode, Graph graph, Transformer traverserFactory) {
    super();
    this.traverserFactory = traverserFactory;

    if (traverserFactory == null) {
        throw new IllegalArgumentException("Traverser Factory is null.");
    }
    if (graph == null) {
        // This is the only way to make sure that startNode is in
        // the graph in this case.
        traverserFactory.transform(startNode);
    } else if (!graph.containsNode(startNode)) {
        throw new NoSuchNodeException("Graph does not contain start node: " + startNode);
    }

    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("Consturctor: Pushing trivial Traverser to " + startNode + " onto stack.");
    }
    traverserStack.push(new SingletonTraverser(graph, startNode, null));
}

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From source file:com.phoenixst.plexus.traversals.BreadthFirstTraverser.java

/**
 *  Creates a new <code>BreadthFirstTraverser</code>.  If the
 *  <code>graph</code> argument is <code>null</code>, the
 *  specified <code>startNode</code> cannot be removed by {@link
 *  #remove}.//from   w  w  w  .  j  a  va  2  s. c  o  m
 */
public BreadthFirstTraverser(Object startNode, Graph graph, Transformer traverserFactory) {
    super();
    this.traverserFactory = traverserFactory;

    if (traverserFactory == null) {
        throw new IllegalArgumentException("Traverser Factory is null.");
    }
    if (graph == null) {
        // This is the only way to make sure that startNode is in
        // the graph in this case.
        traverserFactory.transform(startNode);
    } else if (!graph.containsNode(startNode)) {
        throw new NoSuchNodeException("Graph does not contain start node: " + startNode);
    }

    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("Constructor: Adding trivial Traverser to " + startNode + " to end of queue.");
    }
    traverserQueue.addLast(new SingletonTraverser(graph, startNode, null));
}

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From source file:com.phoenixst.plexus.traversals.DepthFirstTraverser.java

/**
 *  Creates a new <code>DepthFirstTraverser</code>.  If the
 *  <code>graph</code> argument is <code>null</code>, the
 *  specified <code>startNode</code> cannot be removed by {@link
 *  #remove}./* w  w w.  j  av a 2s  .c o m*/
 */
public DepthFirstTraverser(Object startNode, Graph graph, Transformer traverserFactory) {
    super();
    this.traverserFactory = traverserFactory;

    if (traverserFactory == null) {
        throw new IllegalArgumentException("Traverser Factory is null.");
    }
    if (graph == null) {
        // This is the only way to make sure that startNode is in
        // the graph in this case.
        traverserFactory.transform(startNode);
    } else if (!graph.containsNode(startNode)) {
        throw new NoSuchNodeException("Graph does not contain start node: " + startNode);
    }

    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("Constructor: Pushing trivial Traverser to " + startNode + " onto Traverser stack.");
    }
    traverserStack.push(new SingletonTraverser(graph, startNode, null));
}

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From source file:com.redhat.rhn.domain.monitoring.command.Command.java

/**
 * Check that values for a given metric are in monotonically increasing
 * order. For the metric <code>m</code>, look at the associated threshold
 * parameters and ensure that the values returned by <code>toValue</code>
 * for them are in strictly ascending order.
 * <p>/*  w  ww  .jav a 2  s. co  m*/
 * Each violation is entered into the returned list as four values: (param1,
 * value1, param2, value2) such that
 * <code>param1.thresholdType &lt; param2.thresholdType</code>, but
 * <code>value1 &gt;= value2</code> when compared as numbers. The
 * parameters in the returned list are of type {@link ThresholdParameter},
 * and the values are strings.
 *
 * @param metric the metric for which to check the parameter values
 * @param toValue a transformer mapping threshold parameters to their value
 * @return a list indicating which parameters have non-ascending values.
 */
public ArrayList checkAscendingValues(Metric metric, Transformer toValue) {
    ArrayList result = new ArrayList();
    ThresholdParameter prevParam = null;
    Float prevValue = null;
    String prevStr = null;
    for (Iterator j = listThresholds(metric).iterator(); j.hasNext();) {
        ThresholdParameter currParam = (ThresholdParameter) j.next();
        String currStr = (String) toValue.transform(currParam);
        Float currValue = null;
        try {
            currValue = NumberUtils.createFloat(currStr);
        } catch (NumberFormatException e) {
            // Ignore this value
            currValue = null;
        }
        if (currValue != null && prevValue != null) {
            if (currValue.compareTo(prevValue) <= 0) {
                result.add(prevParam);
                result.add(prevStr);
                result.add(currParam);
                result.add(currStr);
            }
        }
        if (currValue != null) {
            prevValue = currValue;
            prevParam = currParam;
            prevStr = currStr;
        }
    }
    assert result.size() % 4 == 0;
    return result;
}

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From source file:com.ironiacorp.statistics.r.AbstractRClient.java

/**
 * @param matrix//from   ww  w . j a  v a2 s  . c o  m
 * @param matrixVarName
 * @param rowNameExtractor e.g. you could use StringValueTransformer.getInstance()
 * @return
 */
private void assignRowAndColumnNames(DoubleMatrix<?, ?> matrix, String matrixVarName,
        Transformer rowNameExtractor) {

    List<Object> rown = new ArrayList<Object>();
    for (Object o : matrix.getRowNames()) {
        rown.add(rowNameExtractor.transform(o));
    }

    String rowNameVar = assignStringList(rown);
    String colNameVar = assignStringList(matrix.getColNames());

    String dimcmd = "dimnames(" + matrixVarName + ")<-list(" + rowNameVar + ", " + colNameVar + ")";
    this.voidEval(dimcmd);
}

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From source file:org.apache.cayenne.access.DataDomain.java

/**
 * Executes Transformer.transform() method in a transaction. Transaction policy is to
 * check for the thread transaction, and use it if one exists. If it doesn't, a new
 * transaction is created, with a scope limited to this method.
 *//* ww  w  . j  av a  2 s  . c  om*/
// WARNING: (andrus) if we ever decide to make this method protected or public, we
// need to change the signature to avoid API dependency on commons-collections
Object runInTransaction(Transformer operation) {

    // user or container-managed or nested transaction
    if (Transaction.getThreadTransaction() != null) {
        return operation.transform(null);
    }

    // Cayenne-managed transaction

    Transaction transaction = createTransaction();
    Transaction.bindThreadTransaction(transaction);

    try {
        // implicit begin..
        Object result = operation.transform(null);
        transaction.commit();
        return result;
    } catch (Exception ex) {
        transaction.setRollbackOnly();

        // must rethrow
        if (ex instanceof CayenneRuntimeException) {
            throw (CayenneRuntimeException) ex;
        } else {
            throw new CayenneRuntimeException(ex);
        }
    } finally {
        Transaction.bindThreadTransaction(null);
        if (transaction.getStatus() == Transaction.STATUS_MARKED_ROLLEDBACK) {
            try {
                transaction.rollback();
            } catch (Exception rollbackEx) {
                // although we don't expect an exception here, print the stack, as
                // there have been some Cayenne bugs already (CAY-557) that were
                // masked by this 'catch' clause.
                jdbcEventLogger.logQueryError(rollbackEx);
            }
        }
    }
}

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From source file:org.apache.cayenne.access.SpringDataDomain.java

/**
 * Executes Transformer.transform() method in a transaction. Transaction
 * policy is to check for the thread transaction, and use it if one exists.
 * If it doesn't, a new transaction is created, with a scope limited to this
 * method.//from  w ww  . j a va  2 s  .  c om
 */
@Override
Object runInTransaction(final Transformer operation) {
    if (!this.isUsingExternalTransactions()) {
        return super.runInTransaction(operation);
    } else {
        if (TransactionSynchronizationManager.isActualTransactionActive()) {
            return operation.transform(null);
        }
        TransactionDefinition transactionDefinition = new DefaultTransactionDefinition();
        return transationOperation.execute(transactionDefinition, new TransactionCallback<Object>() {

            @Override
            public Object doInTransaction(TransactionStatus status) {
                return operation.transform(status);
            }
        });
    }
}

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From source file:org.apache.cayenne.exp.Expression.java

/**
 * A recursive method called from "transform" to do the actual
 * transformation.//from ww w  . j  av  a2 s  .  co  m
 * 
 * @return null, Expression.PRUNED_NODE or transformed expression.
 * @since 1.2
 */
protected Object transformExpression(Transformer transformer) {
    Expression copy = shallowCopy();
    int count = getOperandCount();
    for (int i = 0, j = 0; i < count; i++) {
        Object operand = getOperand(i);
        Object transformedChild;

        if (operand instanceof Expression) {
            transformedChild = ((Expression) operand).transformExpression(transformer);
        } else if (transformer != null) {
            transformedChild = transformer.transform(operand);
        } else {
            transformedChild = operand;
        }

        // prune null children only if there is a transformer and it
        // indicated so
        boolean prune = transformer != null && transformedChild == PRUNED_NODE;

        if (!prune) {
            copy.setOperand(j, transformedChild);
            j++;
        }

        if (prune && pruneNodeForPrunedChild(operand)) {
            // bail out early...
            return PRUNED_NODE;
        }
    }

    // all the children are processed, only now transform this copy
    return (transformer != null) ? (Expression) transformer.transform(copy) : copy;
}

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From source file:org.candlepin.controller.PoolManagerFunctionalTest.java

@SuppressWarnings("unchecked")
public static <T> Set<T> transform(Set<?> set, Transformer t) {
    Set<T> result = Util.newSet();
    for (Iterator iterator = set.iterator(); iterator.hasNext();) {
        result.add((T) t.transform(iterator.next()));
    }// w  w w  .j a v  a2 s  .c  om
    return result;
}

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From source file:org.examproject.tweet.service.SimpleCalendarService.java

/**
 * get the calendar dto list by name and year and month.
 *//*from w ww.j  a va2 s  .  com*/
@Override
public List<CalendarDto> getCalendarListByNameAndYearAndMonth(String username, Integer year, Integer month) {
    LOG.debug("called.");
    try {
        // create a date conditions.
        Transformer beginDateTransformer = (Transformer) new MonthBeginDateTransformer();
        Transformer endDateTransformer = (Transformer) new MonthEndDateTransformer();
        DateValue dateValue = new DateValue(year, month, 1);
        Date begin = (Date) beginDateTransformer.transform(dateValue);
        Date end = (Date) endDateTransformer.transform(dateValue);

        // get the tweet list.
        List<CalendarDto> calendarDtoList = new ArrayList<CalendarDto>();
        List<Tweet> tweetList = tweetRepository.findByNameAndDateBetween(username, begin, end);
        LOG.debug("calendar tweet day count: " + tweetList.size());

        // create values for the month. 
        for (int i = 0; i < 31; i++) {
            CalendarDto calendarDto = context.getBean(CalendarDto.class);
            calendarDto.setDay(i + 1);
            calendarDto.setCount(0);
            calendarDtoList.add(calendarDto);
        }

        // check the existence of tweet.
        SimpleDateFormat dateFormat = new SimpleDateFormat("d");
        SimpleDateFormat linkDateFormat = new SimpleDateFormat("/yyyy/MM/dd");
        for (Tweet tweet : tweetList) {
            int dIdx = Integer.parseInt(dateFormat.format(tweet.getDate()));
            CalendarDto calendarDto = calendarDtoList.get(dIdx - 1);
            calendarDto.setDate(tweet.getDate());
            calendarDto.setLinkUrl("/tweet/" + username + linkDateFormat.format(tweet.getDate()) + ".html");
            calendarDto.setIsExist(true);
            calendarDto.setCount(calendarDto.getCount() + 1);
        }

        // return the object list.
        return calendarDtoList;

    } catch (Exception e) {
        LOG.error("an error occurred: " + e.getMessage());
        throw new RuntimeException(e);
    }
}

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