1 | <!DOCTYPE html> <html> <head> <title>DatabaseRoot.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To … <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="ByteIterable.html"> ByteIterable.coffee </a> <a class="source" href="ByteIterator.html"> ByteIterator.coffee </a> <a class="source" href="ArrayByteIterable.html"> ArrayByteIterable.coffee </a> <a class="source" href="ByteIterableBase.html"> ByteIterableBase.coffee </a> <a class="source" href="ByteIterableUtil.html"> ByteIterableUtil.coffee </a> <a class="source" href="LightOutputStream.html"> LightOutputStream.coffee </a> <a class="source" href="StoreConfiguration.html"> StoreConfiguration.coffee </a> <a class="source" href="Reader.html"> Reader.coffee </a> <a class="source" href="Writer.html"> Writer.coffee </a> <a class="source" href="List.html"> List.coffee </a> <a class="source" href="ListNode.html"> ListNode.coffee </a> <a class="source" href="Cursor.html"> Cursor.coffee </a> <a class="source" href="DatabaseRoot.html"> DatabaseRoot.coffee </a> <a class="source" href="Environment.html"> Environment.coffee </a> <a class="source" href="EnvironmentConfig.html"> EnvironmentConfig.coffee </a> <a class="source" href="Store.html"> Store.coffee </a> <a class="source" href="Transaction.html"> Transaction.coffee </a> <a class="source" href="Addr64.html"> Addr64.coffee </a> <a class="source" href="DataIterator.html"> DataIterator.coffee </a> <a class="source" href="Log.html"> Log.coffee </a> <a class="source" href="LogCache.html"> LogCache.coffee </a> <a class="source" href="LogConfig.html"> LogConfig.coffee </a> <a class="source" href="LogUtil.html"> LogUtil.coffee </a> <a class="source" href="Loggable.html"> Loggable.coffee </a> <a class="source" href="LoggableFactory.html"> LoggableFactory.coffee </a> <a class="source" href="LoggableIterator.html"> LoggableIterator.coffee </a> <a class="source" href="LoggableToWrite.html"> LoggableToWrite.coffee </a> <a class="source" href="NullLoggable.html"> NullLoggable.coffee </a> <a class="source" href="RandomAccessByteIterable.html"> RandomAccessByteIterable.coffee </a> <a class="source" href="RandomAccessLoggable.html"> RandomAccessLoggable.coffee </a> <a class="source" href="RandomAccessLoggableIterator.html"> RandomAccessLoggableIterator.coffee </a> <a class="source" href="StackList.html"> StackList.coffee </a> <a class="source" href="CompoundByteIterable.html"> CompoundByteIterable.coffee </a> <a class="source" href="CompoundByteIteratorBase.html"> CompoundByteIteratorBase.coffee </a> <a class="source" href="CompressedUnsignedLongByteIterable.html"> CompressedUnsignedLongByteIterable.coffee </a> <a class="source" href="FixedLengthByteIterable.html"> FixedLengthByteIterable.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> DatabaseRoot.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-1">¶</a> </div> </td> <td class="code"> <div class="highlight"><pre><span class="nv">CompressedUnsignedLongByteIterable =</span>
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2 | <span class="p">(</span><span class="nx">require</span> <span class="s1">'../log/iterate/CompressedUnsignedLongByteIterable.coffee'</span><span class="p">).</span>
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3 | <span class="nx">CompressedUnsignedLongByteIterable</span>
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4 | <span class="nv">DataIterator = </span><span class="p">(</span><span class="nx">require</span> <span class="s1">'../log/DataIterator.coffee'</span><span class="p">).</span><span class="nx">DataIterator</span>
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5 | <span class="nv">LightReadIterator = </span><span class="p">(</span><span class="nx">require</span> <span class="s1">'../log/DataIterator.coffee'</span><span class="p">).</span><span class="nx">LightReadIterator</span>
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6 | <span class="nv">LoggableToWrite = </span><span class="p">(</span><span class="nx">require</span> <span class="s1">'../log/LoggableToWrite.coffee'</span><span class="p">).</span><span class="nx">LoggableToWrite</span>
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7 | <span class="nv">RandomAccessLoggable =</span>
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8 | <span class="p">(</span><span class="nx">require</span> <span class="s1">'../log/RandomAccessLoggable.coffee'</span><span class="p">).</span><span class="nx">RandomAccessLoggable</span>
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9 | <span class="nv">LightOutputStream =</span>
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10 | <span class="p">(</span><span class="nx">require</span> <span class="s1">'../database/impl/iterate/LightOutputStream.coffee'</span><span class="p">).</span>
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11 | <span class="nx">LightOutputStream</span>
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12 | <span class="nv">Addr64 = </span><span class="p">(</span><span class="nx">require</span> <span class="s1">'../log/Addr64.coffee'</span><span class="p">).</span><span class="nx">Addr64</span></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-2">¶</a> </div> <p>This class is necessary for commmiting log. It is written in log before each
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13 | commit and contains kind of check sum. If it is valid, everything was written
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14 | correctly.</p> </td> <td class="code"> <div class="highlight"><pre><span class="k">class</span> <span class="nx">DatabaseRoot</span> <span class="k">extends</span> <span class="nx">RandomAccessLoggable</span>
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15 | <span class="vi">@DATABASE_ROOT_TYPE: </span><span class="mi">1</span>
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16 | <span class="vi">@MAGIC_DIFF: </span><span class="mi">199</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-3">¶</a> </div> <p>@private</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">rootAddress: </span><span class="kc">undefined</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-4">¶</a> </div> <p>@private</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">lastStructureId: </span><span class="kc">undefined</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-5">¶</a> </div> <p>@private</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">isValid: </span><span class="kc">undefined</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-6">¶</a> </div> <p>Constructor takes rootAddress and lastStructureId.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@create$Addr64</span><span class="nv">$int: </span><span class="nf">(rootAddress, lastStructureId, o) -></span>
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17 | <span class="k">if</span> <span class="o">!</span><span class="nx">o</span><span class="o">?</span> <span class="k">then</span> <span class="nv">o = </span><span class="k">new</span> <span class="nx">DatabaseRoot</span><span class="p">()</span>
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18 | <span class="nv">o.rootAddress = </span><span class="nx">rootAddress</span>
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19 | <span class="nv">o.lastStructureId = </span><span class="nx">lastStructureId</span>
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20 | <span class="nv">o.isValid = </span><span class="kc">undefined</span>
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21 | <span class="k">return</span> <span class="nx">o</span>
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22 |
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23 | <span class="nv">getRootAddress: </span><span class="nf">() -></span>
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24 | <span class="k">return</span> <span class="nx">@rootAddress</span>
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25 |
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26 | <span class="nv">getLastStructureId: </span><span class="nf">() -></span>
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27 | <span class="k">return</span> <span class="nx">@lastStructureId</span>
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28 |
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29 | <span class="nv">isValid: </span><span class="nf">() -></span>
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30 | <span class="k">return</span> <span class="nx">@isValid</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-7">¶</a> </div> <p>Get WriteLogable that can be written to log.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">toLoggable: </span><span class="nf">() -></span>
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31 | <span class="nv">dataLength =</span>
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32 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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33 | <span class="nx">getCompressedSize$int</span><span class="p">(</span><span class="nx">@rootAddress</span><span class="p">.</span><span class="nx">toFloat</span><span class="p">())</span> <span class="o">+</span>
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34 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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35 | <span class="nx">getCompressedSize$int</span><span class="p">(</span><span class="nx">@lastStructureId</span><span class="p">)</span> <span class="o">+</span>
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36 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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37 | <span class="nx">getCompressedSize$int</span><span class="p">(</span><span class="nx">@rootAddress</span><span class="p">.</span><span class="nx">toFloat</span><span class="p">()</span> <span class="o">+</span> <span class="nx">@lastStructureId</span> <span class="o">+</span>
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38 | <span class="nx">DatabaseRoot</span><span class="p">.</span><span class="nx">MAGIC_DIFF</span><span class="p">)</span>
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39 | <span class="nv">los = </span><span class="nx">LightOutputStream</span><span class="p">.</span><span class="nx">create$int</span> <span class="nx">dataLength</span>
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40 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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41 | <span class="nx">fillBytes$int$LightOutputStream</span> <span class="nx">@rootAddress</span><span class="p">.</span><span class="nx">toFloat</span><span class="p">(),</span> <span class="nx">los</span>
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42 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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43 | <span class="nx">fillBytes$int$LightOutputStream</span> <span class="nx">@lastStructureId</span><span class="p">,</span> <span class="nx">los</span>
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44 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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45 | <span class="nx">fillBytes$int$LightOutputStream</span> <span class="nx">@rootAddress</span><span class="p">.</span><span class="nx">toFloat</span><span class="p">()</span> <span class="o">+</span>
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46 | <span class="nx">@lastStructureId</span> <span class="o">+</span> <span class="nx">DatabaseRoot</span><span class="p">.</span><span class="nx">MAGIC_DIFF</span><span class="p">,</span> <span class="nx">los</span>
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47 | <span class="k">return</span> <span class="nx">LoggableToWrite</span><span class="p">.</span>
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48 | <span class="nx">create$int$ByteIterable$int</span> <span class="nx">DatabaseRoot</span><span class="p">.</span><span class="nx">DATABASE_ROOT_TYPE</span><span class="p">,</span>
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49 | <span class="nx">los</span><span class="p">.</span><span class="nx">asArrayByteIterable</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-8">¶</a> </div> <p>Temporary function, until I undestand Loggable factories and usage of
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50 | static temp emitters.
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51 | Very DANGEROUS and should be rewritten anyway!!!</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">readFromLoggable: </span><span class="nf">(loggable) -></span>
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52 | <span class="nv">it = </span><span class="nx">loggable</span><span class="p">.</span><span class="nx">getData</span><span class="p">().</span><span class="nx">iterator</span><span class="p">()</span>
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53 | <span class="nv">nums = </span><span class="k">new</span> <span class="nb">Object</span><span class="p">()</span>
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54 | <span class="nv">emit = </span><span class="kc">false</span>
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55 | <span class="nv">onGetAllNumbers = </span><span class="p">()</span> <span class="o">=></span>
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56 | <span class="vi">@rootAddressInt = </span><span class="nx">nums</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
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57 | <span class="vi">@rootAddress = </span><span class="nx">Addr64</span><span class="p">.</span><span class="nx">create$int$int</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">).</span><span class="nx">plus$int</span><span class="p">(</span><span class="nx">@rootAddressInt</span><span class="p">)</span>
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58 | <span class="vi">@lastStructureId = </span><span class="nx">nums</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span>
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59 | <span class="vi">@isValid = </span><span class="nx">@rootAddressInt</span> <span class="o">==</span> <span class="nx">nums</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="o">-</span>
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60 | <span class="nx">@lastStructureId</span> <span class="o">-</span> <span class="nx">DatabaseRoot</span><span class="p">.</span><span class="nx">MAGIC_DIFF</span>
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61 | <span class="k">if</span> <span class="nx">emit</span>
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62 | <span class="nx">@emit</span> <span class="s1">'readFromLoggable'</span><span class="p">,</span> <span class="nx">@isValid</span>
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63 | <span class="nv">k = </span><span class="mi">0</span>
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64 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span><span class="nx">EMITTER</span><span class="p">.</span><span class="nx">once</span> <span class="s1">'getInt'</span><span class="p">,</span> <span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="o">=></span>
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65 | <span class="nx">nums</span><span class="p">[</span><span class="nx">k</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span>
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66 | <span class="k">if</span> <span class="nx">k</span> <span class="o">!=</span> <span class="mi">3</span>
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67 | <span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="nx">k</span> <span class="o">+</span> <span class="mi">1</span><span class="p">..</span><span class="mi">3</span><span class="p">]</span>
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68 | <span class="nx">nums</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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69 | <span class="nx">getInt$ByteIterator$emit</span> <span class="nx">it</span>
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70 | <span class="nx">onGetAllNumbers</span><span class="p">()</span>
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71 | <span class="k">while</span> <span class="nx">k</span> <span class="o">!=</span> <span class="mi">3</span>
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72 | <span class="nx">k</span> <span class="o">+=</span> <span class="mi">1</span>
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73 | <span class="nx">nums</span><span class="p">[</span><span class="nx">k</span><span class="p">]</span> <span class="o">=</span> <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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74 | <span class="nx">getInt$ByteIterator$emit</span> <span class="nx">it</span>
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75 | <span class="k">if</span> <span class="o">!</span><span class="nx">nums</span><span class="p">[</span><span class="nx">k</span><span class="p">]</span><span class="o">?</span>
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76 | <span class="nv">emit = </span><span class="kc">true</span>
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77 | <span class="k">return</span> <span class="kc">undefined</span>
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78 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span><span class="nx">EMITTER</span><span class="p">.</span><span class="nx">removeAllListeners</span> <span class="s1">'getInt'</span>
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79 | <span class="nx">onGetAllNumbers</span><span class="p">()</span>
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80 | <span class="k">return</span> <span class="nx">@isValid</span>
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81 |
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82 | <span class="nv">exports.DatabaseRoot = </span><span class="nx">DatabaseRoot</span>
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83 |
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84 | </pre></div> </td> </tr> </tbody> </table> </div> </body> </html> |
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