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	<h2 title="Class QueryUtil" class="title">Class QueryUtil</h2>
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	<pre>public class <span class="typeNameLabel">QueryUtil</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>
	<div class="block">Utility methods used in query optimization and processing.</div>
	<dl>
	<dt><span class="simpleTagLabel">Author:</span></dt>
	<dd>Matthias Broecheler (me@matthiasb.com)</dd>
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	<td class="colFirst"><code>static interface </code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.IndexCall.html" title="interface in org.janusgraph.graphdb.query">QueryUtil.IndexCall</a><<a href="../../../../org/janusgraph/graphdb/query/QueryUtil.IndexCall.html" title="type parameter in QueryUtil.IndexCall">R</a>></span></code> </td>
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	<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#QueryUtil--">QueryUtil</a></span>()</code> </td>
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	<td class="colFirst"><code>static int</code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#adjustLimitForTxModifications-org.janusgraph.graphdb.transaction.StandardJanusGraphTx-int-int-">adjustLimitForTxModifications</a></span>(<a href="../../../../org/janusgraph/graphdb/transaction/StandardJanusGraphTx.html" title="class in org.janusgraph.graphdb.transaction">StandardJanusGraphTx</a> tx,
	int uncoveredAndConditions,
	int limit)</code> </td>
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	<tr id="i1" class="rowColor">
	<td class="colFirst"><code>static long</code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#applyOffsetWithQueryLimitAfterCount-long-int-org.janusgraph.graphdb.query.Query-">applyOffsetWithQueryLimitAfterCount</a></span>(long count,
	int offset,
	<a href="../../../../org/janusgraph/graphdb/query/Query.html" title="interface in org.janusgraph.graphdb.query">Query</a> query)</code> </td>
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	<td class="colFirst"><code>static long</code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#applyQueryLimitAfterCount-long-org.janusgraph.graphdb.query.Query-">applyQueryLimitAfterCount</a></span>(long count,
	<a href="../../../../org/janusgraph/graphdb/query/Query.html" title="interface in org.janusgraph.graphdb.query">Query</a> query)</code> </td>
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	<tr id="i3" class="rowColor">
	<td class="colFirst"><code>static <E extends <a href="../../../../org/janusgraph/core/JanusGraphElement.html" title="interface in org.janusgraph.core">JanusGraphElement</a>><br><a href="../../../../org/janusgraph/graphdb/query/condition/And.html" title="class in org.janusgraph.graphdb.query.condition">And</a><E></code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#constraints2QNF-org.janusgraph.graphdb.transaction.StandardJanusGraphTx-java.util.List-">constraints2QNF</a></span>(<a href="../../../../org/janusgraph/graphdb/transaction/StandardJanusGraphTx.html" title="class in org.janusgraph.graphdb.transaction">StandardJanusGraphTx</a> tx,
	<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../org/janusgraph/graphdb/query/condition/PredicateCondition.html" title="class in org.janusgraph.graphdb.query.condition">PredicateCondition</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,E>> constraints)</code>
	<div class="block">Prepares the constraints from the query builder into a QNF compliant condition.</div>
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	<td class="colFirst"><code>static int</code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#convertLimit-long-">convertLimit</a></span>(long limit)</code> </td>
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	<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</a><<a href="../../../../org/janusgraph/core/RelationType.html" title="interface in org.janusgraph.core">RelationType</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>></code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#extractOrCondition-org.janusgraph.graphdb.query.condition.Or-">extractOrCondition</a></span>(<a href="../../../../org/janusgraph/graphdb/query/condition/Or.html" title="class in org.janusgraph.graphdb.query.condition">Or</a><<a href="../../../../org/janusgraph/core/JanusGraphRelation.html" title="interface in org.janusgraph.core">JanusGraphRelation</a>> condition)</code> </td>
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	<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../org/janusgraph/core/JanusGraphEdge.html" title="interface in org.janusgraph.core">JanusGraphEdge</a>></code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#getEdges-org.janusgraph.graphdb.transaction.StandardJanusGraphTx-org.janusgraph.core.PropertyKey-java.lang.Object-">getEdges</a></span>(<a href="../../../../org/janusgraph/graphdb/transaction/StandardJanusGraphTx.html" title="class in org.janusgraph.graphdb.transaction">StandardJanusGraphTx</a> tx,
	<a href="../../../../org/janusgraph/core/PropertyKey.html" title="interface in org.janusgraph.core">PropertyKey</a> key,
	<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> equalityCondition)</code> </td>
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	<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../org/janusgraph/core/JanusGraphEdge.html" title="interface in org.janusgraph.core">JanusGraphEdge</a>></code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#getEdges-org.janusgraph.graphdb.transaction.StandardJanusGraphTx-java.lang.String-java.lang.Object-">getEdges</a></span>(<a href="../../../../org/janusgraph/graphdb/transaction/StandardJanusGraphTx.html" title="class in org.janusgraph.graphdb.transaction">StandardJanusGraphTx</a> tx,
	<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> key,
	<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> equalityCondition)</code> </td>
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	<td class="colFirst"><code>static <a href="../../../../org/janusgraph/graphdb/internal/InternalRelationType.html" title="interface in org.janusgraph.graphdb.internal">InternalRelationType</a></code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#getType-org.janusgraph.graphdb.transaction.StandardJanusGraphTx-java.lang.String-">getType</a></span>(<a href="../../../../org/janusgraph/graphdb/transaction/StandardJanusGraphTx.html" title="class in org.janusgraph.graphdb.transaction">StandardJanusGraphTx</a> tx,
	<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> typeName)</code> </td>
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	<tr id="i9" class="rowColor">
	<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../org/janusgraph/core/JanusGraphVertex.html" title="interface in org.janusgraph.core">JanusGraphVertex</a>></code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#getVertices-org.janusgraph.graphdb.transaction.StandardJanusGraphTx-org.janusgraph.core.PropertyKey-java.lang.Object-">getVertices</a></span>(<a href="../../../../org/janusgraph/graphdb/transaction/StandardJanusGraphTx.html" title="class in org.janusgraph.graphdb.transaction">StandardJanusGraphTx</a> tx,
	<a href="../../../../org/janusgraph/core/PropertyKey.html" title="interface in org.janusgraph.core">PropertyKey</a> key,
	<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> equalityCondition)</code> </td>
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	<tr id="i10" class="altColor">
	<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../org/janusgraph/core/JanusGraphVertex.html" title="interface in org.janusgraph.core">JanusGraphVertex</a>></code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#getVertices-org.janusgraph.graphdb.transaction.StandardJanusGraphTx-java.lang.String-java.lang.Object-">getVertices</a></span>(<a href="../../../../org/janusgraph/graphdb/transaction/StandardJanusGraphTx.html" title="class in org.janusgraph.graphdb.transaction">StandardJanusGraphTx</a> tx,
	<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> key,
	<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> equalityCondition)</code> </td>
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	<tr id="i11" class="rowColor">
	<td class="colFirst"><code>static boolean</code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#isEmpty-org.janusgraph.graphdb.query.condition.Condition-">isEmpty</a></span>(<a href="../../../../org/janusgraph/graphdb/query/condition/Condition.html" title="interface in org.janusgraph.graphdb.query.condition">Condition</a><?> condition)</code> </td>
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	<tr id="i12" class="altColor">
	<td class="colFirst"><code>static boolean</code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#isQueryNormalForm-org.janusgraph.graphdb.query.condition.Condition-">isQueryNormalForm</a></span>(<a href="../../../../org/janusgraph/graphdb/query/condition/Condition.html" title="interface in org.janusgraph.graphdb.query.condition">Condition</a><?> condition)</code>
	<div class="block">Query-normal-form (QNF) for JanusGraph is a variant of CNF (conjunctive normal form) with negation inlined where possible</div>
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	</tr>
	<tr id="i13" class="rowColor">
	<td class="colFirst"><code>static int</code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#mergeHighLimits-int-int-">mergeHighLimits</a></span>(int limit1,
	int limit2)</code> </td>
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	<tr id="i14" class="altColor">
	<td class="colFirst"><code>static int</code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#mergeLowLimits-int-int-">mergeLowLimits</a></span>(int limit1,
	int limit2)</code> </td>
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	<tr id="i15" class="rowColor">
	<td class="colFirst"><code>static <R> <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><R></code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#processIntersectingRetrievals-java.util.List-int-">processIntersectingRetrievals</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../org/janusgraph/graphdb/query/QueryUtil.IndexCall.html" title="interface in org.janusgraph.graphdb.query">QueryUtil.IndexCall</a><R>> retrievals,
	int limit)</code> </td>
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	<tr id="i16" class="altColor">
	<td class="colFirst"><code>static <E extends <a href="../../../../org/janusgraph/core/JanusGraphElement.html" title="interface in org.janusgraph.core">JanusGraphElement</a>><br><a href="../../../../org/janusgraph/graphdb/query/condition/Condition.html" title="interface in org.janusgraph.graphdb.query.condition">Condition</a><E></code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#simplifyAnd-org.janusgraph.graphdb.query.condition.And-">simplifyAnd</a></span>(<a href="../../../../org/janusgraph/graphdb/query/condition/And.html" title="class in org.janusgraph.graphdb.query.condition">And</a><E> condition)</code> </td>
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	<h4>QueryUtil</h4>
	<pre>public QueryUtil()</pre>
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	<pre>public static int adjustLimitForTxModifications(<a href="../../../../org/janusgraph/graphdb/transaction/StandardJanusGraphTx.html" title="class in org.janusgraph.graphdb.transaction">StandardJanusGraphTx</a> tx,
	int uncoveredAndConditions,
	int limit)</pre>
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	<pre>public static int mergeLowLimits(int limit1,
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	<pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../org/janusgraph/core/JanusGraphVertex.html" title="interface in org.janusgraph.core">JanusGraphVertex</a>> getVertices(<a href="../../../../org/janusgraph/graphdb/transaction/StandardJanusGraphTx.html" title="class in org.janusgraph.graphdb.transaction">StandardJanusGraphTx</a> tx,
	<a href="../../../../org/janusgraph/core/PropertyKey.html" title="interface in org.janusgraph.core">PropertyKey</a> key,
	<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> equalityCondition)</pre>
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	<pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../org/janusgraph/core/JanusGraphVertex.html" title="interface in org.janusgraph.core">JanusGraphVertex</a>> getVertices(<a href="../../../../org/janusgraph/graphdb/transaction/StandardJanusGraphTx.html" title="class in org.janusgraph.graphdb.transaction">StandardJanusGraphTx</a> tx,
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	<div class="block">Query-normal-form (QNF) for JanusGraph is a variant of CNF (conjunctive normal form) with negation inlined where possible</div>
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	<div class="block">Prepares the constraints from the query builder into a QNF compliant condition.
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	<dt><span class="paramLabel">Type Parameters:</span></dt>
	<dd><code>E</code> - </dd>
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	<dd><code>constraints</code> - </dd>
	<dt><span class="returnLabel">Returns:</span></dt>
	<dt><span class="seeLabel">See Also:</span></dt>
	<dd><a href="../../../../org/janusgraph/graphdb/query/QueryUtil.html#isQueryNormalForm-org.janusgraph.graphdb.query.condition.Condition-"><code>isQueryNormalForm(org.janusgraph.graphdb.query.condition.Condition)</code></a></dd>
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	int limit)</pre>
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	<pre>public static long applyQueryLimitAfterCount(long count,
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	<pre>public static long applyOffsetWithQueryLimitAfterCount(long count,
	int offset,
	<a href="../../../../org/janusgraph/graphdb/query/Query.html" title="interface in org.janusgraph.graphdb.query">Query</a> query)</pre>
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