Class UnresolvedAttribute
- All Implemented Interfaces:
NamedWriteable,Writeable,Resolvable,Unresolvable
Attribute subclasses during
analysis.
For example, if they reference the data directly from lucene they'll be
FieldAttributes. If they reference the results of another calculation
they will be ReferenceAttributes.
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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 inherited from class org.elasticsearch.xpack.esql.core.expression.Attribute
SYNTHETIC_ATTRIBUTE_NAME_PREFIXFields inherited from interface org.elasticsearch.xpack.esql.core.capabilities.Unresolvable
UNRESOLVED_PREFIX -
Constructor Summary
ConstructorsConstructorDescriptionUnresolvedAttribute(Source source, String name) UnresolvedAttribute(Source source, String name, String unresolvedMessage) UnresolvedAttribute(Source source, String name, NameId id, String unresolvedMessage, Object resolutionMetadata) -
Method Summary
Modifier and TypeMethodDescriptionprotected Attributeclone(Source source, String name, DataType dataType, Nullability nullability, NameId id, boolean synthetic) booleandataType()TheDataTypereturned by executing the tree rooted at this expression.static StringerrorMessage(String name, List<String> potentialMatches) inthashCode()protected NodeInfo<UnresolvedAttribute> info()Normally, you want to use one of the staticcreatemethods to implement this.protected booleanprotected Stringlabel()booleanresolved()protected Expression.TypeResolutionThe implementation ofExpression.typeResolved(), which is just a caching wrapper around this method.toString()withUnresolvedMessage(String unresolvedMessage) voidwriteTo(StreamOutput out) Methods inherited from class org.elasticsearch.xpack.esql.core.expression.Attribute
canonicalize, dataTypeEquals, nullable, rawTemporaryName, references, replaceChildren, semanticEquals, semanticHash, toAttribute, withDataType, withId, withLocation, withName, withNullabilityMethods inherited from class org.elasticsearch.xpack.esql.core.expression.NamedExpression
equals, id, name, syntheticMethods inherited from class org.elasticsearch.xpack.esql.core.expression.Expression
canonical, childrenResolved, fold, foldable, propertiesToString, 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, replaceChildrenSameSize, source, sourceLocation, sourceText, transformChildren, transformDown, transformDown, transformDown, transformNodeProps, transformPropertiesDown, transformPropertiesOnly, transformPropertiesUp, transformUp, transformUp, transformUp
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Constructor Details
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UnresolvedAttribute
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UnresolvedAttribute
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UnresolvedAttribute
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Method Details
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writeTo
- Specified by:
writeToin interfaceWriteable- Throws:
IOException
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getWriteableName
- Specified by:
getWriteableNamein interfaceNamedWriteable
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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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resolutionMetadata
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customMessage
public boolean customMessage() -
resolved
public boolean resolved()- Specified by:
resolvedin interfaceResolvable- Specified by:
resolvedin interfaceUnresolvable- Overrides:
resolvedin classExpression
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clone
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withUnresolvedMessage
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resolveType
Description copied from class:ExpressionThe implementation ofExpression.typeResolved(), which is just a caching wrapper around this method. See it's javadoc for what this method should return.Implementations will rarely interact with the
Expression.TypeResolutionclass directly, instead usually calling the utility methods onTypeResolutions.Implementations should fail if
Expression.childrenResolved()returnsfalse.- Overrides:
resolveTypein 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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toString
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label
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nodeString
- Overrides:
nodeStringin classAttribute
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unresolvedMessage
- Specified by:
unresolvedMessagein interfaceUnresolvable
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errorMessage
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hashCode
public int hashCode() -
innerEquals
- Overrides:
innerEqualsin classAttribute
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