Package org.elasticsearch.xpack.esql.expression.function
package org.elasticsearch.xpack.esql.expression.function
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ClassDescriptionAn example of using a function that is rendered in the docs.Converts an
UnresolvedFunctioninto a properFunction.Describes functions.Strategy indicating the type of resolution to apply for resolving the actual function definition in a pluggable way.The position the function can appear in the language.Describes a function map argument represented byMapExpression.Marker interface indicating that a function accepts one optional argument (typically the last one).Describes function parameters.Marker interface indicating that a function accepts two optional arguments (the last two).Unsupported attribute meaning an attribute that has been found yet cannot be used (hence why UnresolvedAttribute cannot be used) expect in special conditions (currently only in projections to allow it to flow through the engine).