Fix compile error.

Author: zhouzf05

pom.xml

@@ -4,7 +4,7 @@
   <modelVersion>4.0.0</modelVersion>  
   <groupId>com.aliyun.openservices</groupId>  
   <artifactId>ots-public</artifactId>  
-  <version>2.2.4</version>  
+  <version>2.2.5</version>  
   <packaging>jar</packaging>  
   <name>Aliyun Open Services SDK for Java</name>  
   <url>http://www.aliyun.com</url>  

src/main/java/com/aliyun/openservices/ots/utils/Pair.java

@@ -0,0 +1,110 @@
+package com.aliyun.openservices.ots.utils;
+
+import java.io.Serializable;
+
+/**
+ * A generic class for pairs.
+ * @param <T1>
+ * @param <T2>
+ */
+public class Pair<T1, T2> implements Serializable
+{
+    protected T1 first = null;
+    protected T2 second = null;
+
+    /**
+     * Default constructor.
+     */
+    public Pair()
+    {
+    }
+
+    /**
+     * Constructor
+     * @param a operand
+     * @param b operand
+     */
+    public Pair(T1 a, T2 b)
+    {
+        this.first = a;
+        this.second = b;
+    }
+
+    /**
+     * Constructs a new pair, inferring the type via the passed arguments
+     * @param <T1> type for first
+     * @param <T2> type for second
+     * @param a first element
+     * @param b second element
+     * @return a new pair containing the passed arguments
+     */
+    public static <T1,T2> Pair<T1,T2> newPair(T1 a, T2 b) {
+        return new Pair<T1,T2>(a, b);
+    }
+
+    /**
+     * Replace the first element of the pair.
+     * @param a operand
+     */
+    public void setFirst(T1 a)
+    {
+        this.first = a;
+    }
+
+    /**
+     * Replace the second element of the pair.
+     * @param b operand
+     */
+    public void setSecond(T2 b)
+    {
+        this.second = b;
+    }
+
+    /**
+     * Return the first element stored in the pair.
+     * @return T1
+     */
+    public T1 getFirst()
+    {
+        return first;
+    }
+
+    /**
+     * Return the second element stored in the pair.
+     * @return T2
+     */
+    public T2 getSecond()
+    {
+        return second;
+    }
+
+    private static boolean equals(Object x, Object y)
+    {
+        return (x == null && y == null) || (x != null && x.equals(y));
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public boolean equals(Object other)
+    {
+        return other instanceof Pair && equals(first, ((Pair)other).first) &&
+                equals(second, ((Pair)other).second);
+    }
+
+    @Override
+    public int hashCode()
+    {
+        if (first == null)
+            return (second == null) ? 0 : second.hashCode() + 1;
+        else if (second == null)
+            return first.hashCode() + 2;
+        else
+            return first.hashCode() * 17 + second.hashCode();
+    }
+
+    @Override
+    public String toString()
+    {
+        return "{" + getFirst() + "," + getSecond() + "}";
+    }
+}

src/test/java/examples/OTSPaginationReadSample.java

@@ -2,8 +2,8 @@
 
 import com.aliyun.openservices.ots.*;
 import com.aliyun.openservices.ots.model.*;
+import com.aliyun.openservices.ots.utils.Pair;
 import com.aliyun.openservices.ots.utils.Preconditions;
-import javafx.util.Pair;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -116,21 +116,21 @@ private static void readByPage(OTSClient client, String tableName) {
         endKey.addPrimaryKeyColumn(COLUMN_UID_NAME, PrimaryKeyValue.INF_MAX);
         // 读第一页，从范围的offset=33的行开始读起
         Pair<List<Row>, RowPrimaryKey> result = readByPage(client, tableName, startKey, endKey, offset, pageSize);
-        for (Row row : result.getKey()) {
+        for (Row row : result.getFirst()) {
             System.out.println(row.getColumns());
         }
-        System.out.println("Total rows count: " + result.getKey().size());
+        System.out.println("Total rows count: " + result.getFirst().size());
 
         // 顺序翻页，读完范围内的所有数据
-        startKey = result.getValue();
+        startKey = result.getSecond();
         while (startKey != null) {
             System.out.println("============= start read next page ==============");
             result = readByPage(client, tableName, startKey, endKey, 0, pageSize);
-            for (Row row : result.getKey()) {
+            for (Row row : result.getFirst()) {
                 System.out.println(row.getColumns());
             }
-            startKey = result.getValue();
-            System.out.println("Total rows count: " + result.getKey().size());
+            startKey = result.getSecond();
+            System.out.println("Total rows count: " + result.getFirst().size());
         }
     }