```
public abstract class FieldScript
extends Object
```
A script to produce dynamic values for return fields.

Constructors
Modifier	Constructor	Description
`protected`	`FieldScript()`
	`FieldScript(Map<String,Object> params, SearchLookup lookup, LeafReaderContext leafContext)`

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract Object`	`execute()`
`Map<String,ScriptDocValues<?>>`	`getDoc()`	The doc lookup for the Lucene segment this script was created for.
`protected LeafSearchLookup`	`getLeafLookup()`	The leaf lookup for the Lucene segment this script was created for.
`Map<String,Object>`	`getParams()`	Return the parameters for this script.
`void`	`setDocument(int docid)`	Set the current document to run the script on next.

public static final String[] PARAMETERS

public static final ScriptContext<FieldScript.Factory> CONTEXT

The context used to compile FieldScript factories.

public FieldScript(Map<String,Object> params,
                   SearchLookup lookup,
                   LeafReaderContext leafContext)

Modifier and Type	Class	Description
`static interface`	`FieldScript.Factory`
`static interface`	`FieldScript.LeafFactory`	A factory to construct `FieldScript` instances.

Modifier and Type	Field	Description
`static ScriptContext<FieldScript.Factory>`	`CONTEXT`	The context used to compile `FieldScript` factories.
`static String[]`	`PARAMETERS`

Class FieldScript