Class MapExpression
java.lang.Object
org.elasticsearch.xpack.esql.core.tree.Node<Expression>
org.elasticsearch.xpack.esql.core.expression.Expression
org.elasticsearch.xpack.esql.core.expression.MapExpression
- All Implemented Interfaces:
NamedWriteable,Writeable,Resolvable
Represent a collect of key-value pairs.
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Nested Class Summary
Nested classes/interfaces inherited from class org.elasticsearch.xpack.esql.core.expression.Expression
Expression.TypeResolutionNested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable
Writeable.Reader<V>, Writeable.Writer<V> -
Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionbooleancontainsKey(Object key) dataType()TheDataTypereturned by executing the tree rooted at this expression.booleaninthashCode()protected NodeInfo<MapExpression> info()Normally, you want to use one of the staticcreatemethods to implement this.map()nullable()replaceChildren(List<Expression> newChildren) toString()voidwriteTo(StreamOutput out) Methods inherited from class org.elasticsearch.xpack.esql.core.expression.Expression
canonical, canonicalize, childrenResolved, fold, foldable, propertiesToString, references, resolved, resolveType, semanticEquals, semanticHash, typeResolvedMethods inherited from class org.elasticsearch.xpack.esql.core.tree.Node
anyMatch, children, collect, collectFirstChildren, collectLeaves, doCollectFirst, forEachDown, forEachDown, forEachDownMayReturnEarly, forEachProperty, forEachPropertyDown, forEachPropertyOnly, forEachPropertyUp, forEachUp, forEachUp, nodeName, nodeProperties, nodeString, replaceChildrenSameSize, source, sourceLocation, sourceText, transformChildren, transformDown, transformDown, transformDown, transformNodeProps, transformPropertiesDown, transformPropertiesOnly, transformPropertiesUp, transformUp, transformUp, transformUp
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Field Details
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ENTRY
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Constructor Details
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MapExpression
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Method Details
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writeTo
- Throws:
IOException
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getWriteableName
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replaceChildren
- Specified by:
replaceChildrenin classNode<Expression>
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info
Description copied from class:NodeNormally, you want to use one of the staticcreatemethods to implement this.For
QueryPlans, it is very important that the properties contain all of the expressions and references relevant to this node, and that all the properties are used in the provided constructor; otherwise query plan transformations likeQueryPlan#transformExpressionsOnly(Function)will not have an effect.- Specified by:
infoin classNode<Expression>
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entryExpressions
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map
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keyFoldedMap
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nullable
- Specified by:
nullablein classExpression
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dataType
Description copied from class:ExpressionTheDataTypereturned by executing the tree rooted at this expression. IfExpression.typeResolved()returns an error then the behavior of this method is undefined. It may return a valid type. Or it may throw an exception. Or it may return a totally nonsensical type.- Specified by:
dataTypein classExpression
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hashCode
public int hashCode()- Overrides:
hashCodein classNode<Expression>
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get
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containsKey
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equals
- Overrides:
equalsin classNode<Expression>
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toString
- Overrides:
toStringin classExpression
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