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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<ul>
<li class="navelem"><a class="el" href="dir_a62226f9e3a6c7c5a3be455e2f87ae01.html">xrpld</a></li><li class="navelem"><a class="el" href="dir_7ce8509406ee125b7d32b7e664ae4e18.html">nodestore</a></li> </ul>
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<div class="header">
<div class="headertitle"><div class="title">Backend.h</div></div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">/*</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> This file is part of rippled: https://github.com/ripple/rippled</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> Copyright (c) 2012, 2013 Ripple Labs Inc.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"></span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> Permission to use, copy, modify, and/or distribute this software for any</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> purpose with or without fee is hereby granted, provided that the above</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"></span> </div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> THE SOFTWARE IS PROVIDED &quot;AS IS&quot; AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment">*/</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">//==============================================================================</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#ifndef RIPPLE_NODESTORE_BACKEND_H_INCLUDED</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#define RIPPLE_NODESTORE_BACKEND_H_INCLUDED</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include &lt;xrpld/nodestore/Types.h&gt;</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cstdint.html">cstdint</a>&gt;</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="keyword">namespace </span>NodeStore {</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="foldopen" id="foldopen00039" data-start="{" data-end="};">
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html"> 39</a></span><span class="keyword">class </span><a class="code hl_class" href="classripple_1_1NodeStore_1_1Backend.html">Backend</a></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span>{</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a7be1490e873f0a4956e4dd9effc9061b"> 48</a></span> <span class="keyword">virtual</span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a7be1490e873f0a4956e4dd9effc9061b">~Backend</a>() = <span class="keywordflow">default</span>;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keyword">virtual</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a206d540c4b8359c598f2309c5ee194bd"> 54</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a206d540c4b8359c598f2309c5ee194bd">getName</a>() = 0;</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">virtual</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional&lt;std::size_t&gt;</a></div>
<div class="foldopen" id="foldopen00059" data-start="{" data-end="}">
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a6471a9de444ac0df7c1dd102efa95854"> 59</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a6471a9de444ac0df7c1dd102efa95854">getBlockSize</a>()<span class="keyword"> const</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordflow">return</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::nullopt</a>;</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> }</div>
</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a586356a9f6050201be9d184bc3fd2c83"> 69</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a586356a9f6050201be9d184bc3fd2c83">open</a>(<span class="keywordtype">bool</span> createIfMissing = <span class="keyword">true</span>) = 0;</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">virtual</span> <span class="keywordtype">bool</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#acd6ac096e54166098107227a8d168044"> 74</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#acd6ac096e54166098107227a8d168044">isOpen</a>() = 0;</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span></div>
<div class="foldopen" id="foldopen00084" data-start="{" data-end="}">
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#ae4e7c931c5382d31d877c6f7162dd21e"> 84</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#ae4e7c931c5382d31d877c6f7162dd21e">open</a>(<span class="keywordtype">bool</span> createIfMissing, uint64_t appType, uint64_t uid, uint64_t salt)</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> {</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> Throw&lt;std::runtime_error&gt;(</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="stringliteral">&quot;Deterministic appType/uid/salt not supported by backend &quot;</span> +</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a206d540c4b8359c598f2309c5ee194bd">getName</a>());</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> }</div>
</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a6b13f9a9bbf0bf6470648f4910a92dd0"> 95</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a6b13f9a9bbf0bf6470648f4910a92dd0">close</a>() = 0;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="keyword">virtual</span> <a class="code hl_enumeration" href="namespaceripple_1_1NodeStore.html#af127c2e4fc73b5d35647147ef45b350c">Status</a></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a7d3224e43e89dc098962b986d70e9833"> 106</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a7d3224e43e89dc098962b986d70e9833">fetch</a>(<span class="keywordtype">void</span> <span class="keyword">const</span>* key, <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr&lt;NodeObject&gt;</a>* pObject) = 0;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">virtual</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair&lt;std::vector&lt;std::shared_ptr&lt;NodeObject&gt;</a>&gt;, <a class="code hl_enumeration" href="namespaceripple_1_1NodeStore.html#af127c2e4fc73b5d35647147ef45b350c">Status</a>&gt;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a9a651edcf0faf1fd93b105d0286015d9"> 110</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a9a651edcf0faf1fd93b105d0286015d9">fetchBatch</a>(<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;uint256 const*&gt;</a> <span class="keyword">const</span>&amp; hashes) = 0;</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a8862f8d96713c985c3169e57cbb260c2"> 119</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a8862f8d96713c985c3169e57cbb260c2">store</a>(<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr&lt;NodeObject&gt;</a> <span class="keyword">const</span>&amp; <span class="keywordtype">object</span>) = 0;</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> </div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#acb1f22b4101841e695477646c95376a7"> 126</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#acb1f22b4101841e695477646c95376a7">storeBatch</a>(<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/vector.html">Batch</a> <span class="keyword">const</span>&amp; <a class="code hl_enumvalue" href="namespaceripple.html#ad5143ceada01141772ae4aab984f94bdad265aed699f7409ac0ec6fe07ee9cb11">batch</a>) = 0;</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a0756bdfe06dcb0382b47e23b39813394"> 129</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a0756bdfe06dcb0382b47e23b39813394">sync</a>() = 0;</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> </div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a70721d2adc758a808d2536eee864df52"> 138</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a70721d2adc758a808d2536eee864df52">for_each</a>(<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/functional/function.html">std::function</a>&lt;<span class="keywordtype">void</span>(<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr&lt;NodeObject&gt;</a>)&gt; f) = 0;</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keyword">virtual</span> <span class="keywordtype">int</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#ac4d7008b7a616ce05568da3e96a204ec"> 142</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#ac4d7008b7a616ce05568da3e96a204ec">getWriteLoad</a>() = 0;</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a898be5251e9216eb21938e3083c2d1ef"> 146</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a898be5251e9216eb21938e3083c2d1ef">setDeletePath</a>() = 0;</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span></div>
<div class="foldopen" id="foldopen00155" data-start="{" data-end="}">
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#afea5371bd4d7824d96f28700fa831f33"> 155</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#afea5371bd4d7824d96f28700fa831f33">verify</a>()</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> {</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> }</div>
</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keyword">virtual</span> <span class="keywordtype">int</span></div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1Backend.html#a915130d326c2e63209accb8af09cf8b4"> 161</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1Backend.html#a915130d326c2e63209accb8af09cf8b4">fdRequired</a>() <span class="keyword">const</span> = 0;</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span>};</div>
</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span>} <span class="comment">// namespace NodeStore</span></div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span>} <span class="comment">// namespace ripple</span></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="abasic_string_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html">ripple::NodeStore::Backend</a></div><div class="ttdoc">A backend used for the NodeStore.</div><div class="ttdef"><b>Definition</b> <a href="Backend_8h_source.html#l00039">Backend.h:40</a></div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a0756bdfe06dcb0382b47e23b39813394"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a0756bdfe06dcb0382b47e23b39813394">ripple::NodeStore::Backend::sync</a></div><div class="ttdeci">virtual void sync()=0</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a206d540c4b8359c598f2309c5ee194bd"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a206d540c4b8359c598f2309c5ee194bd">ripple::NodeStore::Backend::getName</a></div><div class="ttdeci">virtual std::string getName()=0</div><div class="ttdoc">Get the human-readable name of this backend.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a586356a9f6050201be9d184bc3fd2c83"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a586356a9f6050201be9d184bc3fd2c83">ripple::NodeStore::Backend::open</a></div><div class="ttdeci">virtual void open(bool createIfMissing=true)=0</div><div class="ttdoc">Open the backend.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a6471a9de444ac0df7c1dd102efa95854"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a6471a9de444ac0df7c1dd102efa95854">ripple::NodeStore::Backend::getBlockSize</a></div><div class="ttdeci">virtual std::optional&lt; std::size_t &gt; getBlockSize() const</div><div class="ttdoc">Get the block size for backends that support it.</div><div class="ttdef"><b>Definition</b> <a href="Backend_8h_source.html#l00059">Backend.h:59</a></div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a6b13f9a9bbf0bf6470648f4910a92dd0"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a6b13f9a9bbf0bf6470648f4910a92dd0">ripple::NodeStore::Backend::close</a></div><div class="ttdeci">virtual void close()=0</div><div class="ttdoc">Close the backend.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a70721d2adc758a808d2536eee864df52"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a70721d2adc758a808d2536eee864df52">ripple::NodeStore::Backend::for_each</a></div><div class="ttdeci">virtual void for_each(std::function&lt; void(std::shared_ptr&lt; NodeObject &gt;)&gt; f)=0</div><div class="ttdoc">Visit every object in the database This is usually called during import.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a7be1490e873f0a4956e4dd9effc9061b"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a7be1490e873f0a4956e4dd9effc9061b">ripple::NodeStore::Backend::~Backend</a></div><div class="ttdeci">virtual ~Backend()=default</div><div class="ttdoc">Destroy the backend.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a7d3224e43e89dc098962b986d70e9833"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a7d3224e43e89dc098962b986d70e9833">ripple::NodeStore::Backend::fetch</a></div><div class="ttdeci">virtual Status fetch(void const *key, std::shared_ptr&lt; NodeObject &gt; *pObject)=0</div><div class="ttdoc">Fetch a single object.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a8862f8d96713c985c3169e57cbb260c2"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a8862f8d96713c985c3169e57cbb260c2">ripple::NodeStore::Backend::store</a></div><div class="ttdeci">virtual void store(std::shared_ptr&lt; NodeObject &gt; const &amp;object)=0</div><div class="ttdoc">Store a single object.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a898be5251e9216eb21938e3083c2d1ef"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a898be5251e9216eb21938e3083c2d1ef">ripple::NodeStore::Backend::setDeletePath</a></div><div class="ttdeci">virtual void setDeletePath()=0</div><div class="ttdoc">Remove contents on disk upon destruction.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a915130d326c2e63209accb8af09cf8b4"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a915130d326c2e63209accb8af09cf8b4">ripple::NodeStore::Backend::fdRequired</a></div><div class="ttdeci">virtual int fdRequired() const =0</div><div class="ttdoc">Returns the number of file descriptors the backend expects to need.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_a9a651edcf0faf1fd93b105d0286015d9"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#a9a651edcf0faf1fd93b105d0286015d9">ripple::NodeStore::Backend::fetchBatch</a></div><div class="ttdeci">virtual std::pair&lt; std::vector&lt; std::shared_ptr&lt; NodeObject &gt; &gt;, Status &gt; fetchBatch(std::vector&lt; uint256 const * &gt; const &amp;hashes)=0</div><div class="ttdoc">Fetch a batch synchronously.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_ac4d7008b7a616ce05568da3e96a204ec"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#ac4d7008b7a616ce05568da3e96a204ec">ripple::NodeStore::Backend::getWriteLoad</a></div><div class="ttdeci">virtual int getWriteLoad()=0</div><div class="ttdoc">Estimate the number of write operations pending.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_acb1f22b4101841e695477646c95376a7"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#acb1f22b4101841e695477646c95376a7">ripple::NodeStore::Backend::storeBatch</a></div><div class="ttdeci">virtual void storeBatch(Batch const &amp;batch)=0</div><div class="ttdoc">Store a group of objects.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_acd6ac096e54166098107227a8d168044"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#acd6ac096e54166098107227a8d168044">ripple::NodeStore::Backend::isOpen</a></div><div class="ttdeci">virtual bool isOpen()=0</div><div class="ttdoc">Returns true is the database is open.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_ae4e7c931c5382d31d877c6f7162dd21e"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#ae4e7c931c5382d31d877c6f7162dd21e">ripple::NodeStore::Backend::open</a></div><div class="ttdeci">virtual void open(bool createIfMissing, uint64_t appType, uint64_t uid, uint64_t salt)</div><div class="ttdoc">Open the backend.</div><div class="ttdef"><b>Definition</b> <a href="Backend_8h_source.html#l00084">Backend.h:84</a></div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Backend_html_afea5371bd4d7824d96f28700fa831f33"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Backend.html#afea5371bd4d7824d96f28700fa831f33">ripple::NodeStore::Backend::verify</a></div><div class="ttdeci">virtual void verify()</div><div class="ttdoc">Perform consistency checks on database.</div><div class="ttdef"><b>Definition</b> <a href="Backend_8h_source.html#l00155">Backend.h:155</a></div></div>
<div class="ttc" id="acstdint_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cstdint.html">cstdint</a></div></div>
<div class="ttc" id="afunction_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/functional/function.html">std::function</a></div></div>
<div class="ttc" id="ais_same_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same_v</a></div><div class="ttdeci">T is_same_v</div></div>
<div class="ttc" id="anamespaceripple_1_1NodeStore_html_af127c2e4fc73b5d35647147ef45b350c"><div class="ttname"><a href="namespaceripple_1_1NodeStore.html#af127c2e4fc73b5d35647147ef45b350c">ripple::NodeStore::Status</a></div><div class="ttdeci">Status</div><div class="ttdoc">Return codes from Backend operations.</div><div class="ttdef"><b>Definition</b> <a href="src_2xrpld_2nodestore_2Types_8h_source.html#l00044">src/xrpld/nodestore/Types.h:44</a></div></div>
<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition</b> <a href="algorithm_8h_source.html#l00025">algorithm.h:25</a></div></div>
<div class="ttc" id="anamespaceripple_html_ad5143ceada01141772ae4aab984f94bdad265aed699f7409ac0ec6fe07ee9cb11"><div class="ttname"><a href="namespaceripple.html#ad5143ceada01141772ae4aab984f94bdad265aed699f7409ac0ec6fe07ee9cb11">ripple::HashPrefix::batch</a></div><div class="ttdeci">@ batch</div><div class="ttdoc">Batch.</div></div>
<div class="ttc" id="aoptional_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional</a></div></div>
<div class="ttc" id="apair_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair</a></div></div>
<div class="ttc" id="ashared_ptr_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr</a></div></div>
<div class="ttc" id="avector_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a></div></div>
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