FunctionMetadata (DataStax Enterprise Java Driver - Binary distribution 1.6.9 API)

java.lang.Object
- com.datastax.driver.core.FunctionMetadata

```
public class FunctionMetadata
extends Object
```
Describes a CQL function (created with CREATE FUNCTION...).

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`String`	`asCQLQuery()` Returns a CQL query representing this function.
`boolean`	`equals(Object other)`
`String`	`exportAsString()` Returns a CQL query representing this function in human readable form.
`Map<String,DataType>`	`getArguments()` Returns the names and types of this function's arguments.
`String`	`getBody()` Returns the body of this function.
`KeyspaceMetadata`	`getKeyspace()` Returns the keyspace this function belongs to.
`String`	`getLanguage()` Returns the programming language in which this function's body is written.
`List<String>`	`getMonotonicOn()` Returns the argument names that the function is monotonic on.
`DataType`	`getReturnType()` Returns the return type of this function.
`String`	`getSignature()` Returns the CQL signature of this function.
`String`	`getSimpleName()` Returns the simple name of this function.
`int`	`hashCode()`
`boolean`	`isCalledOnNullInput()` Indicates whether this function's body gets called on null input.
`boolean`	`isDeterministic()`
`boolean`	`isMonotonic()` Indicates whether or not this function is monotonic on all of its arguments.
`String`	`toString()`

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

- Method Detail
  - exportAsString
```
public String exportAsString()
```
    Returns a CQL query representing this function in human readable form.
    This method is equivalent to asCQLQuery() but the output is formatted.
    
    Returns:
    
    the CQL query representing this function.
  - asCQLQuery
```
public String asCQLQuery()
```
    Returns a CQL query representing this function.
    This method returns a single 'CREATE FUNCTION' query corresponding to this function definition.
    
    Returns:
    
    the 'CREATE FUNCTION' query corresponding to this function.
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - getKeyspace
```
public KeyspaceMetadata getKeyspace()
```
    Returns the keyspace this function belongs to.
    
    Returns:
    
    the keyspace metadata of the keyspace this function belongs to.
  - getSignature
```
public String getSignature()
```
    Returns the CQL signature of this function.
    This is the name of the function, followed by the names of the argument types between parentheses, for example sum(int,int).
    Note that the returned signature is not qualified with the keyspace name.
    
    Returns:
    
    the signature of this function.
  - getSimpleName
```
public String getSimpleName()
```
    Returns the simple name of this function.
    This is the name of the function, without arguments. Note that functions can be overloaded with different argument lists, therefore the simple name may not be unique. For example, sum(int,int) and sum(int,int,int) both have the simple name sum.
    
    Returns:
    
    the simple name of this function.
    
    See Also:
    
    getSignature()
  - getArguments
```
public Map<String,DataType> getArguments()
```
    Returns the names and types of this function's arguments.
    
    Returns:
    
    a map from argument name to argument type.
  - getBody
```
public String getBody()
```
    Returns the body of this function.
    
    Returns:
    
    the body.
  - isCalledOnNullInput
```
public boolean isCalledOnNullInput()
```
    Indicates whether this function's body gets called on null input.
    This is true if the function was created with CALLED ON NULL INPUT, and false if it was created with RETURNS NULL ON NULL INPUT.
    
    Returns:
    
    whether this function's body gets called on null input.
  - getLanguage
```
public String getLanguage()
```
    Returns the programming language in which this function's body is written.
    
    Returns:
    
    the language.
  - getReturnType
```
public DataType getReturnType()
```
    Returns the return type of this function.
    
    Returns:
    
    the return type.
  - isDeterministic
```
public boolean isDeterministic()
```
    Returns:
    
    Whether or not this function is deterministic. This means that given a particular input, the function will always produce the same output.
  - isMonotonic
```
public boolean isMonotonic()
```
    Indicates whether or not this function is monotonic on all of its arguments. This means that it is either entirely non-increasing or non-decreasing. Even if the function is not monotonic on all its arguments, it's possible to specify that it is monotonic on one of its arguments, meaning that partial applications of the function over that argument will be monotonic. Monotonicity is required to use the function in a GROUP BY clause.
    
    Returns:
    
    whether or not this function is monotonic on all of its arguments.
  - getMonotonicOn
```
public List<String> getMonotonicOn()
```
    Returns the argument names that the function is monotonic on. If isMonotonic() returns true, this will return all argument names. Otherwise this will return either one argument or an empty list.
  - equals
```
public boolean equals(Object other)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object

Class FunctionMetadata

Method Summary

Methods inherited from class java.lang.Object

Method Detail

exportAsString

asCQLQuery

toString

getKeyspace

getSignature

getSimpleName

getArguments

getBody

isCalledOnNullInput

getLanguage

getReturnType

isDeterministic

isMonotonic

getMonotonicOn

equals

hashCode