Class QueryNodeOperation
- java.lang.Object
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- org.apache.lucene.queryparser.flexible.core.util.QueryNodeOperation
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public final class QueryNodeOperation extends java.lang.Object
Allow joining 2 QueryNode Trees, into one.
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Nested Class Summary
Nested Classes Modifier and Type Class Description private static class
QueryNodeOperation.ANDOperation
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Constructor Summary
Constructors Modifier Constructor Description private
QueryNodeOperation()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static QueryNode
logicalAnd(QueryNode q1, QueryNode q2)
perform a logical and of 2 QueryNode trees.
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Method Detail
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logicalAnd
public static final QueryNode logicalAnd(QueryNode q1, QueryNode q2)
perform a logical and of 2 QueryNode trees. if q1 and q2 are ANDQueryNode nodes it uses head Node from q1 and adds the children of q2 to q1 if q1 is a AND node and q2 is not, add q2 as a child of the head node of q1 if q2 is a AND node and q1 is not, add q1 as a child of the head node of q2 if q1 and q2 are not ANDQueryNode nodes, create a AND node and make q1 and q2 children of that node if q1 or q2 is null it returns the not null node if q1 = q2 = null it returns null
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