class DataSourceResolver extends ResolverExtension
The DataSourceResolver is a Resolver extension that resolves nodes defined in the datasources package. We have it as an extension to avoid cyclic dependencies between resolver and datasources packages.
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- new DataSourceResolver(sparkSession: classic.SparkSession)
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- def resolveOperator(operator: LogicalPlan, resolver: LogicalPlanResolver): Option[LogicalPlan]
Resolve UnresolvedCatalogRelation: - Reuse FindDataSourceTable code to resolve UnresolvedCatalogRelation - Return LogicalRelation if it's resolved - Explicitly disallow StreamingRelation and StreamingRelationV2 for now - FileResolver, which is a ResolverExtension, introduces a new LogicalPlan node which resolution has to be handled here (further resolution of it doesn't need any specific resolution except adding it's attributes to the scope).
Resolve UnresolvedCatalogRelation: - Reuse FindDataSourceTable code to resolve UnresolvedCatalogRelation - Return LogicalRelation if it's resolved - Explicitly disallow StreamingRelation and StreamingRelationV2 for now - FileResolver, which is a ResolverExtension, introduces a new LogicalPlan node which resolution has to be handled here (further resolution of it doesn't need any specific resolution except adding it's attributes to the scope).
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- DataSourceResolver → ResolverExtension
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(Since version 9)