Example usage for org.apache.commons.lang ObjectUtils defaultIfNull

Introduction

In this page you can find the example usage for org.apache.commons.lang ObjectUtils defaultIfNull.

Prototype

public static <T> T defaultIfNull(T object, T defaultValue)

Source Link

Document

Returns a default value if the object passed is null.

 ObjectUtils.defaultIfNull(null, null)      = null ObjectUtils.defaultIfNull(null, "")        = "" ObjectUtils.defaultIfNull(null, "zz")      = "zz" ObjectUtils.defaultIfNull("abc", *)        = "abc" ObjectUtils.defaultIfNull(Boolean.TRUE, *) = Boolean.TRUE

Usage

From source file:org.yes.cart.web.page.component.filterednavigation.AbstractProductFilter.java

/**
 * Adapt list of  {@link org.yes.cart.domain.queryobject.FilteredNavigationRecord} into ugly
 * list of attribute name - list of attributes values pair .
 *
 * @param records navigation records/*from  w  ww. j a  v a 2 s .c om*/
 * @return list of pairs
 */
protected List<Pair<Pair<String, String>, List<Pair<Pair<String, Integer>, PageParameters>>>> adaptNavigationRecords(
        final List<FilteredNavigationRecord> records) {
    String head = StringUtils.EMPTY;
    Pair<Pair<String, String>, List<Pair<Pair<String, Integer>, PageParameters>>> currentPair = null;

    final List<Pair<Pair<String, String>, List<Pair<Pair<String, Integer>, PageParameters>>>> headValueList = new ArrayList<Pair<Pair<String, String>, List<Pair<Pair<String, Integer>, PageParameters>>>>();

    for (FilteredNavigationRecord navigationRecord : records) {
        if (!navigationRecord.getName().equalsIgnoreCase(head)) {
            currentPair = new Pair<Pair<String, String>, List<Pair<Pair<String, Integer>, PageParameters>>>(
                    new Pair<String, String>(navigationRecord.getCode(),
                            (String) ObjectUtils.defaultIfNull(navigationRecord.getDisplayName(),
                                    navigationRecord.getName())),
                    new ArrayList<Pair<Pair<String, Integer>, PageParameters>>());
            headValueList.add(currentPair);
            head = navigationRecord.getName();
        }
        currentPair.getSecond()
                .add(new Pair<Pair<String, Integer>, PageParameters>(
                        new Pair<String, Integer>(adaptValueForLinkLabel(navigationRecord.getValue(),
                                navigationRecord.getDisplayValue()), navigationRecord.getCount()),
                        getNavigationParameter(navigationRecord.getCode(), navigationRecord.getValue())));
    }
    return headValueList;
}