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Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.
Enterprise
Open source
FieldCache class
Signature
export declare class FieldCache Import
import { FieldCache } from '@grafana/data';Constructors
| Constructor | Modifiers | Description |
|---|---|---|
| constructor(data) | Constructs a new instance of the FieldCache class |
Properties
| Property | Modifiers | Type | Description |
|---|---|---|---|
| fields | FieldWithIndex[] |
Methods
| Method | Modifiers | Description |
|---|---|---|
| getFieldByName(name) | Returns the first field with the given name. | |
| getFields(type) | ||
| getFirstFieldOfType(type, includeHidden) | ||
| hasFieldNamed(name) | ||
| hasFieldOfType(type) | ||
| hasFieldWithNameAndType(name, type) |
constructor(data)
Constructs a new instance of the FieldCache class
Signature
constructor(data: DataFrame);Parameters
| Parameter | Type | Description |
|---|---|---|
| data | DataFrame |
fields property
Signature
fields: FieldWithIndex[];getFieldByName method
Returns the first field with the given name.
Signature
getFieldByName(name: string): FieldWithIndex | undefined;Parameters
| Parameter | Type | Description |
|---|---|---|
| name | string |
Returns:
FieldWithIndex | undefined
getFields method
Signature
getFields(type?: FieldType): FieldWithIndex[];Parameters
| Parameter | Type | Description |
|---|---|---|
| type | FieldType |
Returns:
FieldWithIndex[]
getFirstFieldOfType method
Signature
getFirstFieldOfType(type: FieldType, includeHidden?: boolean): FieldWithIndex | undefined;Parameters
| Parameter | Type | Description |
|---|---|---|
| type | FieldType | |
| includeHidden | boolean |
Returns:
FieldWithIndex | undefined
hasFieldNamed method
Signature
hasFieldNamed(name: string): boolean;Parameters
| Parameter | Type | Description |
|---|---|---|
| name | string |
Returns:
boolean
hasFieldOfType method
Signature
hasFieldOfType(type: FieldType): boolean;Parameters
| Parameter | Type | Description |
|---|---|---|
| type | FieldType |
Returns:
boolean
hasFieldWithNameAndType method
Signature
hasFieldWithNameAndType(name: string, type: FieldType): boolean;Parameters
| Parameter | Type | Description |
|---|---|---|
| name | string | |
| type | FieldType |
Returns:
boolean
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