AbstractIndexFieldData (server 7.0.1 API)

java.lang.Object
- org.elasticsearch.index.AbstractIndexComponent
- - org.elasticsearch.index.fielddata.plain.AbstractIndexFieldData<FD>

All Implemented Interfaces:: IndexFieldData<FD>, IndexComponent

Direct Known Subclasses:: AbstractIndexOrdinalsFieldData

public abstract class AbstractIndexFieldData<FD extends AtomicFieldData>
extends AbstractIndexComponent
implements IndexFieldData<FD>

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static interface`	`AbstractIndexFieldData.PerValueEstimator`	A `PerValueEstimator` is a sub-class that can be used to estimate the memory overhead for loading the data.

Nested classes/interfaces inherited from interface org.elasticsearch.index.fielddata.IndexFieldData
IndexFieldData.Builder, IndexFieldData.Global<FD extends AtomicFieldData>, IndexFieldData.XFieldComparatorSource

Field Summary

Fields
Modifier and Type Field Description

protected IndexFieldDataCache cache
- Fields inherited from class org.elasticsearch.index.AbstractIndexComponent
  deprecationLogger, indexSettings, logger

Constructor Summary

Constructors
Constructor	Description
`AbstractIndexFieldData(IndexSettings indexSettings, java.lang.String fieldName, IndexFieldDataCache cache)`

Method Summary

Modifier and Type	Method	Description
`void`	`clear()`	Clears any resources associated with this field data.
`protected abstract FD`	`empty(int maxDoc)`
`java.lang.String`	`getFieldName()`	The field name.
`FD`	`load(org.apache.lucene.index.LeafReaderContext context)`	Loads the atomic field data for the reader, possibly cached.

Methods inherited from class org.elasticsearch.index.AbstractIndexComponent
getIndexSettings, index

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

Methods inherited from interface org.elasticsearch.index.IndexComponent
index

Methods inherited from interface org.elasticsearch.index.fielddata.IndexFieldData
loadDirect, sortField

- Field Detail
  - cache
```
protected final IndexFieldDataCache cache
```
- Constructor Detail
  - AbstractIndexFieldData
```
public AbstractIndexFieldData(IndexSettings indexSettings,
                              java.lang.String fieldName,
                              IndexFieldDataCache cache)
```
- Method Detail
  - getFieldName
```
public java.lang.String getFieldName()
```
    Description copied from interface: IndexFieldData
    
    The field name.
    
    Specified by:
    
    getFieldName in interface IndexFieldData<FD extends AtomicFieldData>
  - clear
```
public void clear()
```
    Description copied from interface: IndexFieldData
    
    Clears any resources associated with this field data.
    
    Specified by:
    
    clear in interface IndexFieldData<FD extends AtomicFieldData>
  - load
```
public FD load(org.apache.lucene.index.LeafReaderContext context)
```
    Description copied from interface: IndexFieldData
    
    Loads the atomic field data for the reader, possibly cached.
    
    Specified by:
    
    load in interface IndexFieldData<FD extends AtomicFieldData>
  - empty
```
protected abstract FD empty(int maxDoc)
```
    Parameters:
    
    maxDoc - of the current reader
    
    Returns:
    
    an empty field data instances for field data lookups of empty segments (returning no values)