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grafana/docs/sources/packages_api/data/fieldcache.md
Marcus Andersson cc3fc18076 Docs: enable packages reference docs for 7-beta (#23953)
* added packages reference menu item.

* removed the draft flag.

* Updated docs by running script.
2020-04-28 09:53:58 +02:00

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Markdown

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# -----------------------------------------------------------------------
# Do not edit this file. It is automatically generated by API Documenter.
# -----------------------------------------------------------------------
title = "FieldCache"
keywords = ["grafana","documentation","sdk","@grafana/data"]
type = "docs"
+++
## FieldCache class
<b>Signature</b>
```typescript
export declare class FieldCache
```
<b>Import</b>
```typescript
import { FieldCache } from '@grafana/data';
```
<b>Constructors</b>
| Constructor | Modifiers | Description |
| --- | --- | --- |
| [constructor(data)](#constructor-data) | | Constructs a new instance of the <code>FieldCache</code> class |
<b>Properties</b>
| Property | Modifiers | Type | Description |
| --- | --- | --- | --- |
| [fields](#fields-property) | | <code>FieldWithIndex[]</code> | |
<b>Methods</b>
| Method | Modifiers | Description |
| --- | --- | --- |
| [getFieldByName(name)](#getfieldbyname-method) | | Returns the first field with the given name. |
| [getFields(type)](#getfields-method) | | |
| [getFirstFieldOfType(type)](#getfirstfieldoftype-method) | | |
| [hasFieldNamed(name)](#hasfieldnamed-method) | | |
| [hasFieldOfType(type)](#hasfieldoftype-method) | | |
### constructor(data)
Constructs a new instance of the `FieldCache` class
<b>Signature</b>
```typescript
constructor(data: DataFrame);
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| data | <code>DataFrame</code> | |
### fields property
<b>Signature</b>
```typescript
fields: FieldWithIndex[];
```
### getFieldByName method
Returns the first field with the given name.
<b>Signature</b>
```typescript
getFieldByName(name: string): FieldWithIndex | undefined;
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| name | <code>string</code> | |
<b>Returns:</b>
`FieldWithIndex | undefined`
### getFields method
<b>Signature</b>
```typescript
getFields(type?: FieldType): FieldWithIndex[];
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| type | <code>FieldType</code> | |
<b>Returns:</b>
`FieldWithIndex[]`
### getFirstFieldOfType method
<b>Signature</b>
```typescript
getFirstFieldOfType(type: FieldType): FieldWithIndex | undefined;
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| type | <code>FieldType</code> | |
<b>Returns:</b>
`FieldWithIndex | undefined`
### hasFieldNamed method
<b>Signature</b>
```typescript
hasFieldNamed(name: string): boolean;
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| name | <code>string</code> | |
<b>Returns:</b>
`boolean`
### hasFieldOfType method
<b>Signature</b>
```typescript
hasFieldOfType(type: FieldType): boolean;
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| type | <code>FieldType</code> | |
<b>Returns:</b>
`boolean`