TableFunction (Apache Calcite API)

All Superinterfaces:

Function

All Known Implementing Classes:

SqlAdvisorGetHintsFunction, SqlAdvisorGetHintsFunction2, TableFunctionImpl
```
public interface TableFunction
extends Function
```
Function that returns a table during execution time.
In contrast with TableMacro, the result of the table is not known until execution.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.reflect.Type`	`getElementType(java.util.List<java.lang.Object> arguments)`	Returns the row type of the table yielded by this function when applied to given arguments.
`RelDataType`	`getRowType(RelDataTypeFactory typeFactory, java.util.List<java.lang.Object> arguments)`	Returns the record type of the table yielded by this function when applied to given arguments.

Methods inherited from interface org.apache.calcite.schema.Function
getParameters

- Method Detail
  - getRowType
```
RelDataType getRowType(RelDataTypeFactory typeFactory,
                       java.util.List<java.lang.Object> arguments)
```
    Returns the record type of the table yielded by this function when applied to given arguments. Only literal arguments are passed, non-literal are replaced with default values (null, 0, false, etc).
    
    Parameters:
    
    typeFactory - Type factory
    
    arguments - arguments of a function call (only literal arguments are passed, nulls for non-literal ones)
    
    Returns:
    
    row type of the table
  - getElementType
```
java.lang.reflect.Type getElementType(java.util.List<java.lang.Object> arguments)
```
    Returns the row type of the table yielded by this function when applied to given arguments. Only literal arguments are passed, non-literal are replaced with default values (null, 0, false, etc).
    
    Parameters:
    
    arguments - arguments of a function call (only literal arguments are passed, nulls for non-literal ones)
    
    Returns:
    
    element type of the table (e.g. Object[].class)