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.apache.hadoop.hive.ql.optimizer.calcite.druid.DruidIntervalUtils.java

protected static boolean mergeable(Range range1, Range range2) {
    Comparable x1 = range1.upperEndpoint();
    Comparable x2 = range2.lowerEndpoint();
    int compare = x1.compareTo(x2);
    return compare > 0 || (compare == 0 && range1.upperBoundType() == BoundType.CLOSED
            && range2.lowerBoundType() == BoundType.CLOSED);
}

From source file:com.softmotions.commons.bean.BeanUtils.java

/**
 * Compares the given values.// ww  w  .ja  va  2 s.  c  o  m
 *
 * @param a The object to compare with object b.
 * @param b The object to compare with object a.
 * @return true if the objects are equal or are both null.
 */
public static int compare(Comparable a, Comparable b) {
    if ((a == null) || (b == null)) {
        if (a == b) {
            return 0;
        }
        if (a == null) {
            return -1;
        }
        return 1;
    }
    return a.compareTo(b);
}

From source file:com.clican.pluto.common.util.SearchUtils.java

/**
 * ???????source???//from w w  w.  j  av  a  2 s .c om
 * 
 * @param <T>
 *            
 * @param <K>
 *            
 * @param source
 *            ?
 * @param comparablePropName
 *            ?
 * @param comp
 *            
 * @return
 */
@SuppressWarnings("unchecked")
public static <T, K> T binarySearch(List<T> source, String comparablePropName, Comparable<K> comp) {
    if (source == null || source.size() == 0) {
        return null;
    }
    int first = 0, upto = source.size();
    while (first < upto) {
        int midIdx = (first + upto) / 2;// Compute mid point.
        T mid = source.get(midIdx);
        try {
            K value = (K) PropertyUtils.getProperty(mid, comparablePropName);
            if (comp.compareTo(value) < 0) {
                upto = midIdx; // repeat search in bottom half.
            } else if (comp.compareTo(value) > 0) {
                first = midIdx + 1; // Repeat search in top half.
            } else {
                return source.get(midIdx);// Found it. return position
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
    return null; // Failed to find key
}

From source file:org.kuali.kfs.gl.businessobject.LedgerSummaryDetailLine.java

/**
 * @return a standard comparator for comparing NightlyOutPendingEntryLedgerSummaryDetailLine objects
 *///ww  w  . ja v a2 s .  c  om
public static Comparator<LedgerSummaryDetailLine> getStandardComparator() {
    return new Comparator<LedgerSummaryDetailLine>() {

        /**
         * Compares two NightlyOutPendingEntryLedgerSummaryDetailLine objects
         * 
         * @param detail1 the first NightlyOutPendingEntryLedgerSummaryDetailLine object
         * @param detail2 the second NightlyOutPendingEntryLedgerSummaryDetailLine other
         * @return the standard 0 for equals, greater than 0 for greater than, less than 0 for less than
         */
        public int compare(LedgerSummaryDetailLine detail1, LedgerSummaryDetailLine detail2) {
            int comp = 0;
            comp = nullSafeCompare(detail1.getFinancialBalanceTypeCode(),
                    detail2.getFinancialBalanceTypeCode());

            if (comp == 0) {
                comp = nullSafeCompare(detail1.getFinancialSystemOriginationCode(),
                        detail2.getFinancialSystemOriginationCode());
            }

            if (comp == 0) {
                comp = nullSafeCompare(detail1.getUniversityFiscalYear(), detail2.getUniversityFiscalYear());
            }

            if (comp == 0) {
                comp = nullSafeCompare(detail1.getUniversityAccountPeriodCode(),
                        detail2.getUniversityAccountPeriodCode());
            }

            return comp;
        }

        /**
         * Checks for nulls in the two comparables before calling the compare. If one is null and not the other, the null is
         * considered less. If both are null they are considered equal.
         * 
         * @param o1 object to compare
         * @param o2 object to compare o1 to
         * @return -1 for less, 0 for equal, 1 for greater
         */
        protected int nullSafeCompare(Comparable o1, Comparable o2) {
            if (o1 == null && o2 != null) {
                return -1;
            }

            if (o1 != null && o2 == null) {
                return 1;
            }

            if (o1 == null && o2 == null) {
                return 0;
            }

            return o1.compareTo(o2);
        }
    };
}

From source file:org.kuali.rice.krad.datadictionary.validation.ValidationUtils.java

/**
 * checks whether the provided value is greater than the limit given
 *
 * @param value - the object to check//from   www  .j a v  a  2 s  .  c o  m
 * @param limit - the limit to use
 * @param <T>
 * @return one of the values in {@link  Result}
 */
public static <T> Result isGreaterThan(T value, Comparable<T> limit) {
    return limit == null ? Result.UNDEFINED : (limit.compareTo(value) < 0 ? Result.VALID : Result.INVALID);
}

From source file:org.kuali.rice.krad.datadictionary.validation.ValidationUtils.java

/**
 * checks whether the provided value is greater than or equal to the limit given
 *
 * @param value - the object to check//w w  w .  jav  a2 s.co m
 * @param limit - the limit to use
 * @param <T>
 * @return one of the values in {@link  Result}
 */
public static <T> Result isGreaterThanOrEqual(T value, Comparable<T> limit) {
    return limit == null ? Result.UNDEFINED : (limit.compareTo(value) <= 0 ? Result.VALID : Result.INVALID);
}

From source file:org.kuali.rice.krad.datadictionary.validation.ValidationUtils.java

/**
 * checks whether the provided value is less than the limit given
 *
 * @param value - the object to check// w ww.  j a  v a2s . co m
 * @param limit - the limit to use
 * @param <T>
 * @return one of the values in {@link  Result}
 */
public static <T> Result isLessThan(T value, Comparable<T> limit) {
    return limit == null ? Result.UNDEFINED : (limit.compareTo(value) > 0 ? Result.VALID : Result.INVALID);
}

From source file:org.kuali.rice.krad.datadictionary.validation.ValidationUtils.java

/**
 * checks whether the provided value is greater than the limit given
 *
 * @param value - the object to check//ww  w  . ja  va 2  s .c  o  m
 * @param limit - the limit to use
 * @param <T>
 * @return one of the values in {@link  Result}
 */
public static <T> Result isLessThanOrEqual(T value, Comparable<T> limit) {
    return limit == null ? Result.UNDEFINED : (limit.compareTo(value) >= 0 ? Result.VALID : Result.INVALID);
}

From source file:RandomChooser.java

public static <T> void gt(Comparable<T> c1, T c2) {
    if (c1.compareTo(c2) > 0)
        return;//from   w w w  .j a v  a2 s . c o m
    throw new IllegalArgumentException(c1 + GT + c2);
}

From source file:RandomChooser.java

public static <T> void lt(Comparable<T> c1, T c2) {
    if (c1.compareTo(c2) < 0)
        return;//from  w  w  w. j a v a 2 s . c om
    throw new IllegalArgumentException(c1 + LT + c2);
}