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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /><title>HashtableAList xref</title><link type="text/css" rel="stylesheet" href="../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../apidocs/st/ata/util/HashtableAList.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <a name="2" href="#2">2</a> <strong>package</strong> <a href="../../../st/ata/util/package-summary.html">st.ata.util</a>;<a name="3" href="#3">3</a> <a name="4" href="#4">4</a> <strong>import</strong> java.io.IOException;<a name="5" href="#5">5</a> <strong>import</strong> java.io.InputStream;<a name="6" href="#6">6</a> <strong>import</strong> java.io.Serializable;<a name="7" href="#7">7</a> <strong>import</strong> java.util.Arrays;<a name="8" href="#8">8</a> <strong>import</strong> java.util.Date;<a name="9" href="#9">9</a> <strong>import</strong> java.util.Hashtable;<a name="10" href="#10">10</a> <strong>import</strong> java.util.Iterator;<a name="11" href="#11">11</a> <strong>import</strong> java.util.NoSuchElementException;<a name="12" href="#12">12</a> <a name="13" href="#13">13</a> <a name="14" href="#14">14</a> <em class="comment">// Tested by TestHashtableAList</em><a name="15" href="#15">15</a> <a name="16" href="#16">16</a> <em>/**<em>* Implementation of {@link AList} using simple hashtable. */</em></em><a name="17" href="#17">17</a> @SuppressWarnings({<span class="string">"unchecked"</span>})<a name="18" href="#18">18</a> <strong>public</strong> <strong>class</strong> <a href="../../../st/ata/util/HashtableAList.html">HashtableAList</a> implements MutableAList, Serializable {<a name="19" href="#19">19</a> <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>long</strong> serialVersionUID = 3670660167336648644L;<a name="20" href="#20">20</a> <a name="21" href="#21">21</a> <strong>private</strong> <strong>final</strong> Hashtable mTable = <strong>new</strong> Hashtable();<a name="22" href="#22">22</a> <a name="23" href="#23">23</a> <strong>private</strong> <strong>static</strong> <strong>class</strong> DateArray {<a name="24" href="#24">24</a> <strong>public</strong> Date[] values;<a name="25" href="#25">25</a> <strong>public</strong> DateArray(Date[] v) { values = v; }<a name="26" href="#26">26</a> <strong>public</strong> <strong>boolean</strong> equals(Object obj) {<a name="27" href="#27">27</a> <strong>if</strong> (! (obj instanceof DateArray)) <strong>return</strong> false;<a name="28" href="#28">28</a> <strong>return</strong> Arrays.equals(values, ((DateArray)obj).values);<a name="29" href="#29">29</a> }<a name="30" href="#30">30</a> }<a name="31" href="#31">31</a> <a name="32" href="#32">32</a> <a name="33" href="#33">33</a> <em>/**<em>* Remove all key-value mappings. */</em></em><a name="34" href="#34">34</a> <strong>public</strong> <strong>void</strong> clear() {<a name="35" href="#35">35</a> close();<a name="36" href="#36">36</a> mTable.clear();<a name="37" href="#37">37</a> }<a name="38" href="#38">38</a> <a name="39" href="#39">39</a> <strong>public</strong> <strong>boolean</strong> containsKey(String key) {<a name="40" href="#40">40</a> <strong>return</strong> mTable.containsKey(key);<a name="41" href="#41">41</a> }<a name="42" href="#42">42</a> <a name="43" href="#43">43</a> <em>/**<em>*</em></em><a name="44" href="#44">44</a> <em> * Deep Clone.</em><a name="45" href="#45">45</a> <em> *</em><a name="46" href="#46">46</a> <em> * Limited implementation</em><a name="47" href="#47">47</a> <em> * @return The cloned object.</em><a name="48" href="#48">48</a> <em> */</em><a name="49" href="#49">49</a> <strong>public</strong> Object clone() {<a name="50" href="#50">50</a> <a href="../../../st/ata/util/HashtableAList.html">HashtableAList</a> copy = <strong>new</strong> <a href="../../../st/ata/util/HashtableAList.html">HashtableAList</a>();<a name="51" href="#51">51</a> String[] keys = getKeyArray();<a name="52" href="#52">52</a> <strong>for</strong> (<strong>int</strong> i=0; i<keys.length; i++) {<a name="53" href="#53">53</a> Object me=getObject(keys[i]);<a name="54" href="#54">54</a> <strong>if</strong> (me instanceof AList)<a name="55" href="#55">55</a> copy.putObject(keys[i], ((AList)me).clone());<a name="56" href="#56">56</a> <strong>else</strong> <strong>if</strong> (me instanceof AList[]) {<a name="57" href="#57">57</a> <a href="../../../st/ata/util/AList.html">AList</a>[] from = (AList[])me;<a name="58" href="#58">58</a> <strong>int</strong> count=from.length;<a name="59" href="#59">59</a> <strong>for</strong> (<strong>int</strong> j=0; j<from.length; j++) {<a name="60" href="#60">60</a> <strong>if</strong> (from[j]==<strong>null</strong>) {<a name="61" href="#61">61</a> count--;<a name="62" href="#62">62</a> }<a name="63" href="#63">63</a> }<a name="64" href="#64">64</a> <a name="65" href="#65">65</a> <a href="../../../st/ata/util/AList.html">AList</a>[] copyAList = <strong>new</strong> <a href="../../../st/ata/util/AList.html">AList</a>[count];<a name="66" href="#66">66</a> <strong>for</strong> (<strong>int</strong> j=0; j<count; j++) {<a name="67" href="#67">67</a> <strong>if</strong> (from[j]==<strong>null</strong>) <strong>continue</strong>;<a name="68" href="#68">68</a> copyAList[j]=(<a href="../../../st/ata/util/AList.html">AList</a>)from[j].clone();<a name="69" href="#69">69</a> }<a name="70" href="#70">70</a> copy.putObject(keys[i], copyAList);<a name="71" href="#71">71</a> } <strong>else</strong> <strong>if</strong> (me instanceof String[]) {<a name="72" href="#72">72</a> String[] from = (String[])me;<a name="73" href="#73">73</a> String[] copyA = <strong>new</strong> String[from.length];<a name="74" href="#74">74</a> <strong>for</strong> (<strong>int</strong> j=0; j<from.length; j++)<a name="75" href="#75">75</a> copyA[j]=from[j];<a name="76" href="#76">76</a> copy.putObject(keys[i], copyA);<a name="77" href="#77">77</a> }<a name="78" href="#78">78</a> <strong>else</strong> <strong>if</strong> (me instanceof Long) {<a name="79" href="#79">79</a> copy.putObject(keys[i], <strong>new</strong> Long(((Long)me).longValue()));<a name="80" href="#80">80</a> } <strong>else</strong> <strong>if</strong> (me instanceof String) {<a name="81" href="#81">81</a> copy.putObject(keys[i], me);<a name="82" href="#82">82</a> } <strong>else</strong><a name="83" href="#83">83</a> X.noimpl();<a name="84" href="#84">84</a> }<a name="85" href="#85">85</a> <strong>return</strong> copy;<a name="86" href="#86">86</a> }<a name="87" href="#87">87</a> <a name="88" href="#88">88</a> <em>/**<em>* </em></em><a name="89" href="#89">89</a> <em> * Shallow copy of fields of <code>other</code> into <code>this</code>.</em><a name="90" href="#90">90</a> <em> * @param other AList to copy from.</em><a name="91" href="#91">91</a> <em> */</em><a name="92" href="#92">92</a> <strong>public</strong> <strong>void</strong> copyFrom(<a href="../../../st/ata/util/AList.html">AList</a> other) {<a name="93" href="#93">93</a> Iterator keys = other.getKeys();<a name="94" href="#94">94</a> <strong>while</strong> (keys.hasNext()) {<a name="95" href="#95">95</a> String key = (String)keys.next();<a name="96" href="#96">96</a> <strong>switch</strong> (other.getType(key)) {<a name="97" href="#97">97</a> <strong>case</strong> T_ALIST:<a name="98" href="#98">98</a> putAList(key, other.getAList(key));<a name="99" href="#99">99</a> <strong>break</strong>;<a name="100" href="#100">100</a> <strong>case</strong> T_DATE:<a name="101" href="#101">101</a> putDate(key, other.getDate(key));<a name="102" href="#102">102</a> <strong>break</strong>;<a name="103" href="#103">103</a> <strong>case</strong> T_INT:<a name="104" href="#104">104</a> putInt(key, other.getInt(key));<a name="105" href="#105">105</a> <strong>break</strong>;<a name="106" href="#106">106</a> <strong>case</strong> T_LONG:<a name="107" href="#107">107</a> putLong(key, other.getLong(key));<a name="108" href="#108">108</a> <strong>break</strong>;<a name="109" href="#109">109</a> <strong>case</strong> T_STRING:<a name="110" href="#110">110</a> putString(key, other.getString(key));<a name="111" href="#111">111</a> <strong>break</strong>;<a name="112" href="#112">112</a> <strong>case</strong> T_INPUTSTREAM:<a name="113" href="#113">113</a> putInputStream(key, other.getInputStream(key));<a name="114" href="#114">114</a> <strong>break</strong>;<a name="115" href="#115">115</a> <strong>case</strong> F_ARRAY | T_ALIST:<a name="116" href="#116">116</a> putAListArray(key, other.getAListArray(key));<a name="117" href="#117">117</a> <strong>break</strong>;<a name="118" href="#118">118</a> <strong>case</strong> F_ARRAY | T_DATE:<a name="119" href="#119">119</a> putDateArray(key, other.getDateArray(key));<a name="120" href="#120">120</a> <strong>break</strong>;<a name="121" href="#121">121</a> <strong>case</strong> F_ARRAY | T_INT:<a name="122" href="#122">122</a> putIntArray(key, other.getIntArray(key));<a name="123" href="#123">123</a> <strong>break</strong>;<a name="124" href="#124">124</a> <strong>case</strong> F_ARRAY | T_LONG:<a name="125" href="#125">125</a> putLongArray(key, other.getLongArray(key));<a name="126" href="#126">126</a> <strong>break</strong>;<a name="127" href="#127">127</a> <strong>case</strong> F_ARRAY | T_STRING:<a name="128" href="#128">128</a> putStringArray(key, other.getStringArray(key));<a name="129" href="#129">129</a> <strong>break</strong>;<a name="130" href="#130">130</a> <strong>case</strong> F_ARRAY_ARRAY | T_STRING:<a name="131" href="#131">131</a> putStringArrayArray(key, other.getStringArrayArray(key));<a name="132" href="#132">132</a> <strong>break</strong>;<a name="133" href="#133">133</a> <strong>case</strong> F_ARRAY | T_INPUTSTREAM:<a name="134" href="#134">134</a> putInputStreamArray(key, other.getInputStreamArray(key));<a name="135" href="#135">135</a> <strong>break</strong>;<a name="136" href="#136">136</a> <strong>default</strong>:<a name="137" href="#137">137</a> X.fail(<span class="string">"Unexpected case"</span>);<a name="138" href="#138">138</a> }<a name="139" href="#139">139</a> }<a name="140" href="#140">140</a> }<a name="141" href="#141">141</a> <a name="142" href="#142">142</a> <strong>public</strong> <strong>void</strong> copyKeysFrom(Iterator keys, <a href="../../../st/ata/util/AList.html">AList</a> other) {<a name="143" href="#143">143</a> <strong>for</strong> (; keys.hasNext();) {<a name="144" href="#144">144</a> String key = (String)keys.next();<a name="145" href="#145">145</a> Object value = other.getObject(key);<a name="146" href="#146">146</a> <em class="comment">// TODO: consider shallow or deep copy in some cases?</em><a name="147" href="#147">147</a> <em class="comment">// perhaps controlled by a third parameter?</em><a name="148" href="#148">148</a> <strong>if</strong>(value!=<strong>null</strong>) {<a name="149" href="#149">149</a> putObject(key,value);<a name="150" href="#150">150</a> }<a name="151" href="#151">151</a> }<a name="152" href="#152">152</a> }<a name="153" href="#153">153</a> <a name="154" href="#154">154</a> <strong>public</strong> Object getObject(String key) {<a name="155" href="#155">155</a> <strong>return</strong> mTable.get(key);<a name="156" href="#156">156</a> }<a name="157" href="#157">157</a> <a name="158" href="#158">158</a> <strong>public</strong> <strong>void</strong> putObject(String key, Object val) {<a name="159" href="#159">159</a> mTable.put(key, val);<a name="160" href="#160">160</a> }<a name="161" href="#161">161</a> <strong>public</strong> <strong>void</strong> remove(String key) {⌨️ 快捷键说明
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