Example usage for java.lang Comparable compareTo

Introduction

In this page you can find the example usage for java.lang Comparable compareTo.

Prototype

public int compareTo(T o);

Source Link

Document

Compares this object with the specified object for order.

Usage

From source file:org.pentaho.reporting.engine.classic.core.function.TotalItemMaxFunction.java

/**
 * Receives notification that a row of data is being processed.
 *
 * @param event the event.//from   w  w  w.  j  av  a  2 s.c  om
 */
public void itemsAdvanced(final ReportEvent event) {
    if (field == null) {
        return;
    }

    if (FunctionUtilities.isDefinedPrepareRunLevel(this, event) == false) {
        return;
    }

    final Object fieldValue = event.getDataRow().get(getField());
    if (fieldValue instanceof Comparable == false) {
        return;
    }

    try {
        final Comparable compare = (Comparable) fieldValue;

        final Comparable oldValue = result.get(lastGroupSequenceNumber);
        if (oldValue == null || oldValue.compareTo(compare) < ZERO_I) {
            result.set(lastGroupSequenceNumber, compare);
        }
    } catch (Exception e) {
        logger.error("TotalItemMaxFunction.advanceItems(): problem comparing values.");
    }
}

From source file:org.pentaho.reporting.engine.classic.core.function.TotalItemMinFunction.java

/**
 * Receives notification that a row of data is being processed.
 *
 * @param event the event./*  w  ww  . j av  a  2  s . c  o m*/
 */
public void itemsAdvanced(final ReportEvent event) {
    if (field == null) {
        return;
    }

    if (FunctionUtilities.isDefinedPrepareRunLevel(this, event) == false) {
        return;
    }

    final Object fieldValue = event.getDataRow().get(getField());
    if (fieldValue instanceof Comparable == false) {
        return;
    }

    try {
        final Comparable compare = (Comparable) fieldValue;

        final Comparable oldValue = result.get(lastGroupSequenceNumber);
        if (oldValue == null || oldValue.compareTo(compare) > ZERO_I) {
            result.set(lastGroupSequenceNumber, compare);
        }
    } catch (Exception e) {
        logger.error("TotalItemMinFunction.advanceItems(): problem comparing values.");
    }
}

From source file:com.datatorrent.lib.util.TopNUniqueSort.java

/**
 * Adds object//from w w  w  .  j av a  2 s  . c o m
 * @param e object to be added
 * @return true if offer() succeeds
 */
@SuppressWarnings("unchecked")
public boolean offer(E e) {
    MutableInt ival = hmap.get(e);
    if (ival != null) { // already exists, so no insertion
        ival.increment();
        return true;
    }
    if (q.size() < qbound) {
        if (ival == null) {
            hmap.put(e, new MutableInt(1));
        }
        return q.offer(e);
    }

    boolean ret = false;
    boolean insert;
    Comparable<? super E> head = (Comparable<? super E>) q.peek();

    if (ascending) { // means head is the lowest value due to inversion
        insert = head.compareTo(e) < 0; // e > head
    } else { // means head is the highest value due to inversion
        insert = head.compareTo(e) > 0; // head is < e
    }

    // object e makes it, someone else gets dropped
    if (insert && q.offer(e)) {
        hmap.put(e, new MutableInt(1));
        ret = true;

        // the dropped object will never make it to back in anymore
        E drop = q.poll();
        hmap.remove(drop);
    }
    return ret;
}

From source file:com.px100systems.data.core.CalculatingCriteria.java

@Override
public CalculatingCriteria.Predicate convert(Criteria.lt c) {
    return new Predicate() {
        @SuppressWarnings("unchecked")
        @Override/*w  w  w .ja v a  2s  .c  o  m*/
        public boolean eval() {
            Comparable val = (Comparable) def.getField(bean, c.getMember());
            return val == null || val.compareTo(c.getValue()) < 0;
        }
    };
}

From source file:com.px100systems.data.core.CalculatingCriteria.java

@Override
public CalculatingCriteria.Predicate convert(Criteria.le c) {
    return new Predicate() {
        @SuppressWarnings("unchecked")
        @Override/*from www  . jav  a  2s  .co m*/
        public boolean eval() {
            Comparable val = (Comparable) def.getField(bean, c.getMember());
            return val == null || val.compareTo(c.getValue()) <= 0;
        }
    };
}

From source file:com.px100systems.data.core.CalculatingCriteria.java

@Override
public CalculatingCriteria.Predicate convert(Criteria.gt c) {
    return new Predicate() {
        @SuppressWarnings("unchecked")
        @Override/*w w  w  .j  a  va 2 s.  com*/
        public boolean eval() {
            Comparable val = (Comparable) def.getField(bean, c.getMember());
            return val != null && val.compareTo(c.getValue()) > 0;
        }
    };
}

From source file:com.px100systems.data.core.CalculatingCriteria.java

@Override
public CalculatingCriteria.Predicate convert(Criteria.ge c) {
    return new Predicate() {
        @SuppressWarnings("unchecked")
        @Override/*from   w  ww  . ja  v a2s . c om*/
        public boolean eval() {
            Comparable val = (Comparable) def.getField(bean, c.getMember());
            return val != null && val.compareTo(c.getValue()) >= 0;
        }
    };
}

From source file:com.px100systems.data.core.CalculatingCriteria.java

@Override
public CalculatingCriteria.Predicate convert(Criteria.between c) {
    return new Predicate() {
        @SuppressWarnings("unchecked")
        @Override// www  .java  2s.co m
        public boolean eval() {
            Comparable val = (Comparable) def.getField(bean, c.getMember());
            return val != null && val.compareTo(c.getMin()) >= 0 && val.compareTo(c.getMax()) <= 0;
        }
    };
}

From source file:com.aurel.track.fieldType.runtime.custom.picker.CustomPickerRT.java

/**
 * Get the sort order related to the value
 * By default the value is directly used as sortOrder
 * the select fields has extra sortOrder columns 
 * @param fieldID//from w  w w  . j av  a2  s. c  o m
 * @param parameterCode
 * @param value the value the sortorder is looked for
 * @param workItemID
 * @param localLookupContainer 
 * @return
 */
@Override
public Comparable getSortOrderValue(Integer fieldID, Integer parameterCode, Object value, Integer workItemID,
        LocalLookupContainer localLookupContainer) {
    Integer[] optionIDs = CustomSelectUtil.getSelectedOptions(value);
    if (optionIDs == null || optionIDs.length == 0) {
        LOGGER.debug("No option seleced by getting the sort order value");
        return null;
    } else {
        Comparable minSortOrderValue = null;
        //select the option with the smallest sortOrder
        for (int i = 0; i < optionIDs.length; i++) {
            ISortedBean sortedBean = (ISortedBean) LookupContainer
                    .getNotLocalizedLabelBean(getDropDownMapFieldKey(fieldID), optionIDs[i]); //beansMap.get(optionIDs[i]);
            if (sortedBean != null && sortedBean.getSortOrderValue() != null) {
                Comparable currentSortOrder = sortedBean.getSortOrderValue();
                if (minSortOrderValue == null || currentSortOrder.compareTo(minSortOrderValue) < 0) {
                    minSortOrderValue = currentSortOrder;
                }
            }
        }
        return minSortOrderValue;
    }
}

From source file:org.apache.camel.util.ObjectHelper.java

/**
 * A helper method for performing an ordered comparison on the objects
 * handling nulls and objects which do not handle sorting gracefully
 *
 * @param a  the first object/*from   w ww  . ja v a2 s  .  c  om*/
 * @param b  the second object
 * @param ignoreCase  ignore case for string comparison
 */
@SuppressWarnings("unchecked")
public static int compare(Object a, Object b, boolean ignoreCase) {
    if (a == b) {
        return 0;
    }
    if (a == null) {
        return -1;
    }
    if (b == null) {
        return 1;
    }
    if (a instanceof Ordered && b instanceof Ordered) {
        return ((Ordered) a).getOrder() - ((Ordered) b).getOrder();
    }
    if (ignoreCase && a instanceof String && b instanceof String) {
        return ((String) a).compareToIgnoreCase((String) b);
    }
    if (a instanceof Comparable) {
        Comparable comparable = (Comparable) a;
        return comparable.compareTo(b);
    }
    int answer = a.getClass().getName().compareTo(b.getClass().getName());
    if (answer == 0) {
        answer = a.hashCode() - b.hashCode();
    }
    return answer;
}