SafetyLine (IoTDB Server 0.14.0-preview2 API)

java.lang.Object
- org.apache.iotdb.db.mpp.transformation.dag.memory.SafetyLine

```
public class SafetyLine
extends java.lang.Object
```
Tells the ElasticSerializableTVList if it is safe to remove a cache block.

- Nested Class Summary
  
  Nested Classes
  Modifier and Type Class Description
  
  class SafetyLine.SafetyPile
- Field Summary
  
  Fields
  Modifier and Type Field Description
  
  static int INITIAL_PILE_POSITION
- Constructor Summary
  
  Constructors
  Constructor Description
  
  SafetyLine()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  SafetyLine.SafetyPile addSafetyPile()
  
  int getSafetyLine()
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - INITIAL_PILE_POSITION
```
public static final int INITIAL_PILE_POSITION
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - SafetyLine
```
public SafetyLine()
```
- Method Detail
  - getSafetyLine
```
public int getSafetyLine()
```
    Returns:
    
    the index of the first element that cannot be evicted. in other words, elements whose index are less than the return value can be evicted.
  - addSafetyPile
```
public SafetyLine.SafetyPile addSafetyPile()
```