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) | ||
| getFieldsByLabel(label, value) | Returns the fields with the given label. | |
| 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[]
getFieldsByLabel method
Returns the fields with the given label.
Signature
getFieldsByLabel(label: string, value: string): FieldWithIndex[];
Parameters
| Parameter | Type | Description |
|---|---|---|
| label | string |
|
| value | string |
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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