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| <div class="subTitle">org.janusgraph.graphdb.database.idhandling</div> | |
| <h2 title="Class IDHandler" class="title">Class IDHandler</h2> | |
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| <li>org.janusgraph.graphdb.database.idhandling.IDHandler</li> | |
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| <pre>public class <span class="typeNameLabel">IDHandler</span> | |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> | |
| <dl> | |
| <dt><span class="simpleTagLabel">Author:</span></dt> | |
| <dd>Matthias Broecheler (me@matthiasb.com)</dd> | |
| </dl> | |
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| <th class="colFirst" scope="col">Modifier and Type</th> | |
| <th class="colLast" scope="col">Class and Description</th> | |
| </tr> | |
| <tr class="altColor"> | |
| <td class="colFirst"><code>static class </code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.DirectionID.html" title="enum in org.janusgraph.graphdb.database.idhandling">IDHandler.DirectionID</a></span></code> </td> | |
| </tr> | |
| <tr class="rowColor"> | |
| <td class="colFirst"><code>static class </code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.RelationTypeParse.html" title="class in org.janusgraph.graphdb.database.idhandling">IDHandler.RelationTypeParse</a></span></code> </td> | |
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| <th class="colFirst" scope="col">Modifier and Type</th> | |
| <th class="colLast" scope="col">Field and Description</th> | |
| </tr> | |
| <tr class="altColor"> | |
| <td class="colFirst"><code>static <a href="../../../../../org/janusgraph/diskstorage/StaticBuffer.html" title="interface in org.janusgraph.diskstorage">StaticBuffer</a></code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#MAX_KEY">MAX_KEY</a></span></code> </td> | |
| </tr> | |
| <tr class="rowColor"> | |
| <td class="colFirst"><code>static <a href="../../../../../org/janusgraph/diskstorage/StaticBuffer.html" title="interface in org.janusgraph.diskstorage">StaticBuffer</a></code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#MIN_KEY">MIN_KEY</a></span></code> </td> | |
| </tr> | |
| <tr class="altColor"> | |
| <td class="colFirst"><code>static byte</code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#STOP_MASK">STOP_MASK</a></span></code> </td> | |
| </tr> | |
| <tr class="rowColor"> | |
| <td class="colFirst"><code>static byte</code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#STRING_ID_MARKER">STRING_ID_MARKER</a></span></code> | |
| <div class="block">See <a href="../../../../../org/janusgraph/graphdb/database/idhandling/VariableString.html" title="class in org.janusgraph.graphdb.database.idhandling"><code>VariableString</code></a> for more detail.</div> | |
| </td> | |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#IDHandler--">IDHandler</a></span>()</code> </td> | |
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| <td class="colFirst"><code>static <a href="../../../../../org/janusgraph/diskstorage/StaticBuffer.html" title="interface in org.janusgraph.diskstorage">StaticBuffer</a>[]</code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#getBounds-org.janusgraph.graphdb.internal.RelationCategory-boolean-">getBounds</a></span>(<a href="../../../../../org/janusgraph/graphdb/internal/RelationCategory.html" title="enum in org.janusgraph.graphdb.internal">RelationCategory</a> type, | |
| boolean systemTypes)</code> </td> | |
| </tr> | |
| <tr id="i1" class="rowColor"> | |
| <td class="colFirst"><code>static <a href="../../../../../org/janusgraph/diskstorage/StaticBuffer.html" title="interface in org.janusgraph.diskstorage">StaticBuffer</a></code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#getRelationType-long-org.janusgraph.graphdb.database.idhandling.IDHandler.DirectionID-boolean-">getRelationType</a></span>(long relationTypeId, | |
| <a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.DirectionID.html" title="enum in org.janusgraph.graphdb.database.idhandling">IDHandler.DirectionID</a> dirID, | |
| boolean invisible)</code> </td> | |
| </tr> | |
| <tr id="i2" class="altColor"> | |
| <td class="colFirst"><code>static long</code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#readInlineRelationType-org.janusgraph.diskstorage.ReadBuffer-">readInlineRelationType</a></span>(<a href="../../../../../org/janusgraph/diskstorage/ReadBuffer.html" title="interface in org.janusgraph.diskstorage">ReadBuffer</a> in)</code> </td> | |
| </tr> | |
| <tr id="i3" class="rowColor"> | |
| <td class="colFirst"><code>static <a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.RelationTypeParse.html" title="class in org.janusgraph.graphdb.database.idhandling">IDHandler.RelationTypeParse</a></code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#readRelationType-org.janusgraph.diskstorage.ReadBuffer-">readRelationType</a></span>(<a href="../../../../../org/janusgraph/diskstorage/ReadBuffer.html" title="interface in org.janusgraph.diskstorage">ReadBuffer</a> in)</code> </td> | |
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| <tr id="i4" class="altColor"> | |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#readVertexId-org.janusgraph.diskstorage.ReadBuffer-boolean-">readVertexId</a></span>(<a href="../../../../../org/janusgraph/diskstorage/ReadBuffer.html" title="interface in org.janusgraph.diskstorage">ReadBuffer</a> in, | |
| boolean forward)</code> </td> | |
| </tr> | |
| <tr id="i5" class="rowColor"> | |
| <td class="colFirst"><code>static int</code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#relationTypeLength-long-">relationTypeLength</a></span>(long relationTypeId)</code> </td> | |
| </tr> | |
| <tr id="i6" class="altColor"> | |
| <td class="colFirst"><code>static void</code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#writeInlineRelationType-org.janusgraph.diskstorage.WriteBuffer-long-">writeInlineRelationType</a></span>(<a href="../../../../../org/janusgraph/diskstorage/WriteBuffer.html" title="interface in org.janusgraph.diskstorage">WriteBuffer</a> out, | |
| long relationTypeId)</code> </td> | |
| </tr> | |
| <tr id="i7" class="rowColor"> | |
| <td class="colFirst"><code>static void</code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#writeRelationType-org.janusgraph.diskstorage.WriteBuffer-long-org.janusgraph.graphdb.database.idhandling.IDHandler.DirectionID-boolean-">writeRelationType</a></span>(<a href="../../../../../org/janusgraph/diskstorage/WriteBuffer.html" title="interface in org.janusgraph.diskstorage">WriteBuffer</a> out, | |
| long relationTypeId, | |
| <a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.DirectionID.html" title="enum in org.janusgraph.graphdb.database.idhandling">IDHandler.DirectionID</a> dirID, | |
| boolean invisible)</code> | |
| <div class="block">The edge type is written as follows: [ Invisible & System (2 bit) | Relation-Type-ID (1 bit) | Relation-Type-Count (variable) | Direction-ID (1 bit)] | |
| Would only need 1 bit to store relation-type-id, but using two so we can upper bound.</div> | |
| </td> | |
| </tr> | |
| <tr id="i8" class="altColor"> | |
| <td class="colFirst"><code>static void</code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.html#writeVertexId-org.janusgraph.graphdb.database.serialize.DataOutput-java.lang.Object-boolean-">writeVertexId</a></span>(<a href="../../../../../org/janusgraph/graphdb/database/serialize/DataOutput.html" title="interface in org.janusgraph.graphdb.database.serialize">DataOutput</a> out, | |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> id, | |
| boolean forward)</code> </td> | |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> | |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> | |
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| <h4>MIN_KEY</h4> | |
| <pre>public static final <a href="../../../../../org/janusgraph/diskstorage/StaticBuffer.html" title="interface in org.janusgraph.diskstorage">StaticBuffer</a> MIN_KEY</pre> | |
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| <h4>MAX_KEY</h4> | |
| <pre>public static final <a href="../../../../../org/janusgraph/diskstorage/StaticBuffer.html" title="interface in org.janusgraph.diskstorage">StaticBuffer</a> MAX_KEY</pre> | |
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| <h4>STOP_MASK</h4> | |
| <pre>public static final byte STOP_MASK</pre> | |
| <dl> | |
| <dt><span class="seeLabel">See Also:</span></dt> | |
| <dd><a href="../../../../../constant-values.html#org.janusgraph.graphdb.database.idhandling.IDHandler.STOP_MASK">Constant Field Values</a></dd> | |
| </dl> | |
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| <h4>STRING_ID_MARKER</h4> | |
| <pre>public static final byte STRING_ID_MARKER</pre> | |
| <div class="block">See <a href="../../../../../org/janusgraph/graphdb/database/idhandling/VariableString.html" title="class in org.janusgraph.graphdb.database.idhandling"><code>VariableString</code></a> for more detail. This marker has highest | |
| bit being one. When JanusGraph sees it, it knows the buffer stores | |
| a string ID rather than a positive long ID (whose highest bit is zero).</div> | |
| <dl> | |
| <dt><span class="seeLabel">See Also:</span></dt> | |
| <dd><a href="../../../../../constant-values.html#org.janusgraph.graphdb.database.idhandling.IDHandler.STRING_ID_MARKER">Constant Field Values</a></dd> | |
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| <h4>IDHandler</h4> | |
| <pre>public IDHandler()</pre> | |
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| <h4>relationTypeLength</h4> | |
| <pre>public static int relationTypeLength(long relationTypeId)</pre> | |
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| <h4>writeRelationType</h4> | |
| <pre>public static void writeRelationType(<a href="../../../../../org/janusgraph/diskstorage/WriteBuffer.html" title="interface in org.janusgraph.diskstorage">WriteBuffer</a> out, | |
| long relationTypeId, | |
| <a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.DirectionID.html" title="enum in org.janusgraph.graphdb.database.idhandling">IDHandler.DirectionID</a> dirID, | |
| boolean invisible)</pre> | |
| <div class="block">The edge type is written as follows: [ Invisible & System (2 bit) | Relation-Type-ID (1 bit) | Relation-Type-Count (variable) | Direction-ID (1 bit)] | |
| Would only need 1 bit to store relation-type-id, but using two so we can upper bound.</div> | |
| <dl> | |
| <dt><span class="paramLabel">Parameters:</span></dt> | |
| <dd><code>out</code> - </dd> | |
| <dd><code>relationTypeId</code> - </dd> | |
| <dd><code>dirID</code> - </dd> | |
| </dl> | |
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| <h4>getRelationType</h4> | |
| <pre>public static <a href="../../../../../org/janusgraph/diskstorage/StaticBuffer.html" title="interface in org.janusgraph.diskstorage">StaticBuffer</a> getRelationType(long relationTypeId, | |
| <a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.DirectionID.html" title="enum in org.janusgraph.graphdb.database.idhandling">IDHandler.DirectionID</a> dirID, | |
| boolean invisible)</pre> | |
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| <pre>public static <a href="../../../../../org/janusgraph/graphdb/database/idhandling/IDHandler.RelationTypeParse.html" title="class in org.janusgraph.graphdb.database.idhandling">IDHandler.RelationTypeParse</a> readRelationType(<a href="../../../../../org/janusgraph/diskstorage/ReadBuffer.html" title="interface in org.janusgraph.diskstorage">ReadBuffer</a> in)</pre> | |
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| <pre>public static void writeInlineRelationType(<a href="../../../../../org/janusgraph/diskstorage/WriteBuffer.html" title="interface in org.janusgraph.diskstorage">WriteBuffer</a> out, | |
| long relationTypeId)</pre> | |
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| <pre>public static long readInlineRelationType(<a href="../../../../../org/janusgraph/diskstorage/ReadBuffer.html" title="interface in org.janusgraph.diskstorage">ReadBuffer</a> in)</pre> | |
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| <pre>public static <a href="../../../../../org/janusgraph/diskstorage/StaticBuffer.html" title="interface in org.janusgraph.diskstorage">StaticBuffer</a>[] getBounds(<a href="../../../../../org/janusgraph/graphdb/internal/RelationCategory.html" title="enum in org.janusgraph.graphdb.internal">RelationCategory</a> type, | |
| boolean systemTypes)</pre> | |
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| <pre>public static void writeVertexId(<a href="../../../../../org/janusgraph/graphdb/database/serialize/DataOutput.html" title="interface in org.janusgraph.graphdb.database.serialize">DataOutput</a> out, | |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> id, | |
| boolean forward)</pre> | |
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| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> readVertexId(<a href="../../../../../org/janusgraph/diskstorage/ReadBuffer.html" title="interface in org.janusgraph.diskstorage">ReadBuffer</a> in, | |
| boolean forward)</pre> | |
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