StrLenFunctionNode (searchlib 7.501.17 API)

java.lang.Object
- com.yahoo.vespa.objects.Selectable
- - com.yahoo.vespa.objects.Identifiable
  - - com.yahoo.searchlib.expression.ExpressionNode
    - - com.yahoo.searchlib.expression.FunctionNode
      - com.yahoo.searchlib.expression.MultiArgFunctionNode
        
        com.yahoo.searchlib.expression.UnaryFunctionNode
        
        com.yahoo.searchlib.expression.StrLenFunctionNode

All Implemented Interfaces:

Serializable, Cloneable
```
public class StrLenFunctionNode
extends UnaryFunctionNode
```
This function is an instruction to negate its argument.

Author:

baldersheim, Simon Thoresen Hult

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static int classId

Constructor Summary

Constructors
Constructor	Description
`StrLenFunctionNode()`	Constructs an empty result node.
`StrLenFunctionNode(ExpressionNode arg)`	Constructs an instance of this class with given argument.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected boolean`	`equalsUnaryFunction(UnaryFunctionNode obj)`
`boolean`	`onExecute()`
`protected int`	`onGetClassId()`
`void`	`onPrepare()`
`void`	`onPrepareResult()`

Methods inherited from class com.yahoo.searchlib.expression.UnaryFunctionNode
equalsMultiArgFunction, getArg

Methods inherited from class com.yahoo.searchlib.expression.MultiArgFunctionNode
addArg, clone, equalsFunction, getArg, getNumArgs, hashCode, onCalculate, onDeserialize, onSerialize, selectMembers, visitMembers

Methods inherited from class com.yahoo.searchlib.expression.FunctionNode
equalsExpression, getResult, setResult

Methods inherited from class com.yahoo.searchlib.expression.ExpressionNode
equals, execute, executeIterative, onArgument, prepare

Methods inherited from class com.yahoo.vespa.objects.Identifiable
create, createFromId, deserialize, deserializeOptional, deserializeWithId, equals, getClassId, getRawUtf8Bytes, getUtf8, putUtf8, registerClass, serialize, serializeOptional, serializeWithId, toString

Methods inherited from class com.yahoo.vespa.objects.Selectable
select, select

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

- Field Detail
  - classId
```
public static final int classId
```
- Constructor Detail
  - StrLenFunctionNode
```
public StrLenFunctionNode()
```
    Constructs an empty result node. NOTE: This instance is broken until non-optional member data is set.
  - StrLenFunctionNode
```
public StrLenFunctionNode(ExpressionNode arg)
```
    Constructs an instance of this class with given argument.
    
    Parameters:
    
    arg - The argument for this function.
- Method Detail
  - onPrepareResult
```
public void onPrepareResult()
```
    Overrides:
    
    onPrepareResult in class UnaryFunctionNode
  - onPrepare
```
public void onPrepare()
```
    Overrides:
    
    onPrepare in class UnaryFunctionNode
  - onExecute
```
public boolean onExecute()
```
    Overrides:
    
    onExecute in class MultiArgFunctionNode
  - onGetClassId
```
protected int onGetClassId()
```
    Overrides:
    
    onGetClassId in class UnaryFunctionNode
  - equalsUnaryFunction
```
protected boolean equalsUnaryFunction(UnaryFunctionNode obj)
```
    Specified by:
    
    equalsUnaryFunction in class UnaryFunctionNode