SqlValidatorImpl.Expander (Apache Calcite API)

java.lang.Object
- org.apache.calcite.sql.util.SqlBasicVisitor<SqlNode>
- - org.apache.calcite.sql.util.SqlShuttle
  - - org.apache.calcite.sql.validate.SqlScopedShuttle
    - - org.apache.calcite.sql.validate.SqlValidatorImpl.Expander

All Implemented Interfaces:

SqlVisitor<SqlNode>

Direct Known Subclasses:

SqlValidatorImpl.ExtendedExpander

Enclosing class:

SqlValidatorImpl
```
private static class SqlValidatorImpl.Expander
extends SqlScopedShuttle
```
Converts an expression into canonical form by fully-qualifying any identifiers.

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.calcite.sql.util.SqlShuttle
  SqlShuttle.CallCopyingArgHandler
- Nested classes/interfaces inherited from class org.apache.calcite.sql.util.SqlBasicVisitor
  SqlBasicVisitor.ArgHandler<R>, SqlBasicVisitor.ArgHandlerImpl<R>

Field Summary

Fields
Modifier and Type Field Description

protected SqlValidatorImpl validator

Constructor Summary

Constructors
Constructor Description

Expander(SqlValidatorImpl validator, SqlValidatorScope scope)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected SqlNode`	`expandDynamicStar(SqlIdentifier id, SqlIdentifier fqId)`
`SqlNode`	`visit(SqlIdentifier id)`	Visits an identifier.
`protected SqlNode`	`visitScoped(SqlCall call)`	Visits an operator call.

Methods inherited from class org.apache.calcite.sql.validate.SqlScopedShuttle
getScope, visit

Methods inherited from class org.apache.calcite.sql.util.SqlShuttle
visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - validator
```
protected final SqlValidatorImpl validator
```
- Constructor Detail
  - Expander
```
Expander(SqlValidatorImpl validator,
         SqlValidatorScope scope)
```
- Method Detail
  - visit
```
public SqlNode visit(SqlIdentifier id)
```
    Description copied from interface: SqlVisitor
    
    Visits an identifier.
    
    Specified by:
    
    visit in interface SqlVisitor<SqlNode>
    
    Overrides:
    
    visit in class SqlShuttle
    
    Parameters:
    
    id - identifier
    
    See Also:
    
    SqlIdentifier.accept(SqlVisitor)
  - visitScoped
```
protected SqlNode visitScoped(SqlCall call)
```
    Description copied from class: SqlScopedShuttle
    
    Visits an operator call. If the call has entered a new scope, the base class will have already modified the scope.
    
    Overrides:
    
    visitScoped in class SqlScopedShuttle
  - expandDynamicStar
```
protected SqlNode expandDynamicStar(SqlIdentifier id,
                                    SqlIdentifier fqId)
```