ResolverRule.ResolutionContext (Flink : Table : API Java 1.16.1 API)

Enclosing interface:

ResolverRule
```
public static interface ResolverRule.ResolutionContext
```
Contextual information that can be used during application of the rule. E.g. one can access fields in inputs by name etc.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`org.apache.flink.configuration.ReadableConfig`	`configuration()` Access to configuration.
`FunctionLookup`	`functionLookup()` Access to available `FunctionDefinition`s.
`Optional<LocalReferenceExpression>`	`getLocalReference(String alias)` Access to available local references.
`List<LocalReferenceExpression>`	`getLocalReferences()` Access to available local references.
`Optional<org.apache.flink.table.types.DataType>`	`getOutputDataType()` Access to the expected top-level output data type.
`Optional<LocalOverWindow>`	`getOverWindow(org.apache.flink.table.expressions.Expression alias)` Access to available local over windows.
`boolean`	`isGroupedAggregation()` Whether the expression is evaluated for a grouped aggregation.
`ExpressionResolver.PostResolverFactory`	`postResolutionFactory()` Enables the creation of resolved expressions for transformations after the actual resolution.
`FieldReferenceLookup`	`referenceLookup()` Access to available `FieldReferenceExpression` in inputs.
`SqlExpressionResolver`	`sqlExpressionResolver()` Translates a SQL expression to `ResolvedExpression`.
`TableReferenceLookup`	`tableLookup()` Access to available `TableReferenceExpression`.
`org.apache.flink.table.catalog.DataTypeFactory`	`typeFactory()` Access to `DataTypeFactory`.
`ClassLoader`	`userClassLoader()` Access to user classloader.

- Method Detail
  - configuration
```
org.apache.flink.configuration.ReadableConfig configuration()
```
    Access to configuration.
  - userClassLoader
```
ClassLoader userClassLoader()
```
    Access to user classloader.
  - referenceLookup
```
FieldReferenceLookup referenceLookup()
```
    Access to available FieldReferenceExpression in inputs.
  - tableLookup
```
TableReferenceLookup tableLookup()
```
    Access to available TableReferenceExpression.
  - functionLookup
```
FunctionLookup functionLookup()
```
    Access to available FunctionDefinitions.
  - typeFactory
```
org.apache.flink.table.catalog.DataTypeFactory typeFactory()
```
    Access to DataTypeFactory.
  - sqlExpressionResolver
```
SqlExpressionResolver sqlExpressionResolver()
```
    Translates a SQL expression to ResolvedExpression.
  - postResolutionFactory
```
ExpressionResolver.PostResolverFactory postResolutionFactory()
```
    Enables the creation of resolved expressions for transformations after the actual resolution.
  - getLocalReference
```
Optional<LocalReferenceExpression> getLocalReference(String alias)
```
    Access to available local references.
  - getLocalReferences
```
List<LocalReferenceExpression> getLocalReferences()
```
    Access to available local references.
  - getOutputDataType
```
Optional<org.apache.flink.table.types.DataType> getOutputDataType()
```
    Access to the expected top-level output data type.
  - getOverWindow
```
Optional<LocalOverWindow> getOverWindow(org.apache.flink.table.expressions.Expression alias)
```
    Access to available local over windows.
  - isGroupedAggregation
```
boolean isGroupedAggregation()
```
    Whether the expression is evaluated for a grouped aggregation.

Interface ResolverRule.ResolutionContext

Method Summary

Method Detail

configuration

userClassLoader

referenceLookup

tableLookup

functionLookup

typeFactory

sqlExpressionResolver

postResolutionFactory

getLocalReference

getLocalReferences

getOutputDataType

getOverWindow

isGroupedAggregation