Example usage for com.google.common.collect ComparisonChain result

Introduction

In this page you can find the example usage for com.google.common.collect ComparisonChain result.

Prototype

public abstract int result();

Source Link

Document

Ends this comparison chain and returns its result: a value having the same sign as the first nonzero comparison result in the chain, or zero if every result was zero.

Usage

From source file:com.bj58.oceanus.core.jdbc.result.RowSetComparator.java

@Override
public int compare(RowSet o1, RowSet o2) {
    ComparisonChain chain = ComparisonChain.start();
    try {//w w  w  .  j  a v a 2s .c  o m
        for (int i = 0; i < sortedColumns.length; i++) {
            TableColumn column = sortedColumns[i];
            OrderByType orderByType = column.getOrderByType();
            Object target1 = o1.getObject(column.getResultIndex());
            Object target2 = o2.getObject(column.getResultIndex());
            if (target1 == null) {// nullstring?
                target1 = "";
                if (target2 != null) {
                    target2 = target2.toString();
                } else {
                    target2 = "";
                }
            } else if (target2 == null) {
                target2 = "";
                target1 = target1.toString();
            }

            if (orderByType == null || orderByType == OrderByType.ASC) {
                chain = chain.compare((Comparable<?>) target1, (Comparable<?>) target2);
            } else {
                chain = chain.compare((Comparable<?>) target2, (Comparable<?>) target1);
            }

        }
    } catch (Exception e) {
        throw new ShardException("compare error!row=" + this, e);
    }
    return chain.result();
}