IndexExpression (Morphia)

java.lang.Object
- dev.morphia.aggregation.experimental.expressions.impls.Expression
- - dev.morphia.aggregation.experimental.expressions.impls.IndexExpression

```
public class IndexExpression
extends Expression
```
Defines the $indexOfBytes expression

Since:

2.0

Developer note.
This is an internal item. Its function and presence are subject to change without warning. Its use is highly discouraged.

Constructor Summary

Constructors
Constructor Description

IndexExpression(String operation, Expression string, Expression substring)
Creates the new expression

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`encode(Mapper mapper, org.bson.BsonWriter writer, org.bson.codecs.EncoderContext encoderContext)`
`IndexExpression`	`end(int end)`	Sets the end boundary for searching
`IndexExpression`	`start(int start)`	Sets the start boundary for searching

Methods inherited from class dev.morphia.aggregation.experimental.expressions.impls.Expression
getOperation, getValue, toString

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

- Constructor Detail
  - IndexExpression
```
public IndexExpression(String operation,
                       Expression string,
                       Expression substring)
```
    Creates the new expression
    
    Parameters:
    
    operation - the index operation name
    
    string - the string to search
    
    substring - the target string
- Method Detail
  - encode
```
public void encode(Mapper mapper,
                   org.bson.BsonWriter writer,
                   org.bson.codecs.EncoderContext encoderContext)
```
    Overrides:
    
    encode in class Expression
    
    Parameters:
    
    mapper - the mapper
    
    writer - the writer
    
    encoderContext - the context
  - end
```
public IndexExpression end(int end)
```
    Sets the end boundary for searching
    
    Parameters:
    
    end - the end
    
    Returns:
    
    this
  - start
```
public IndexExpression start(int start)
```
    Sets the start boundary for searching
    
    Parameters:
    
    start - the start
    
    Returns:
    
    this