Function (Teiid 16.0.0 API)

java.lang.Object
- org.teiid.language.BaseLanguageObject
- - org.teiid.language.Function

All Implemented Interfaces:

Expression, LanguageObject, MetadataReference<FunctionMethod>

Direct Known Subclasses:

AggregateFunction
```
public class Function
extends BaseLanguageObject
implements Expression, MetadataReference<FunctionMethod>
```
Represents a function. A function has a name and 0..n Expressions that are parameters.

Constructor Summary

Constructors
Constructor Description

Function(String name, List<? extends Expression> params, Class<?> type)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`acceptVisitor(LanguageObjectVisitor visitor)`
`FunctionMethod`	`getMetadataObject()`
`String`	`getName()`	Get name of the function
`List<Expression>`	`getParameters()`	Get the parameters used in this function.
`Class<?>`	`getType()`	Determine the type returned by this expression.
`void`	`setMetadataObject(FunctionMethod metadataObject)`
`void`	`setName(String name)`	Set name of the function
`void`	`setType(Class<?> type)`

Methods inherited from class org.teiid.language.BaseLanguageObject
toString

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

- Constructor Detail
  - Function
```
public Function(String name,
                List<? extends Expression> params,
                Class<?> type)
```
- Method Detail
  - getMetadataObject
```
public FunctionMethod getMetadataObject()
```
    Specified by:
    
    getMetadataObject in interface MetadataReference<FunctionMethod>
  - setMetadataObject
```
public void setMetadataObject(FunctionMethod metadataObject)
```
  - getName
```
public String getName()
```
    Get name of the function
    
    Returns:
    
    Function name
  - getParameters
```
public List<Expression> getParameters()
```
    Get the parameters used in this function.
    
    Returns:
    
    List of Expression defining the parameters
  - acceptVisitor
```
public void acceptVisitor(LanguageObjectVisitor visitor)
```
    Specified by:
    
    acceptVisitor in interface LanguageObject
  - setName
```
public void setName(String name)
```
    Set name of the function
    
    Parameters:
    
    name - Function name
  - getType
```
public Class<?> getType()
```
    Description copied from interface: Expression
    
    Determine the type returned by this expression.
    
    Specified by:
    
    getType in interface Expression
    
    Returns:
    
    The type, as defined by a Java class
  - setType
```
public void setType(Class<?> type)
```