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useMetricsOrMetricsById

The useMetricsOrMetricsById primitive is used to get a reference to a Metrics object from within a Provider component context, or have it passed directly to this primitive.

useMetricsOrMetricsById(metricsOrMetricsId?: MaybeAccessor<undefined | MetricsOrMetricsId>): Accessor<Metrics | undefined>
TypeDescription
metricsOrMetricsId?MaybeAccessor<undefined | MetricsOrMetricsId>

Either an Id for accessing a Metrics object that was named with an Id in the Provider, or the Metrics object itself.

returnsAccessor<Metrics | undefined>

A reference to the Metrics object (or undefined if not within a Provider context, or if the requested Metrics object does not exist).

This is mostly of use when you are developing a component that needs a Metrics object and which might have been passed in explicitly to the component or is to be picked up from the context by Id (a common pattern for Metrics-based components).

This primitive is unlikely to be used often. For most situations, you will want to use the useMetrics primitive.

Example

This example creates the TinyBase objects needed by the Solid primitive or component and calls it from within a reactive root.

import {createRoot} from 'solid-js';
import {
  createCheckpoints,
  createIndexes,
  createMetrics,
  createQueries,
  createRelationships,
  createStore,
} from 'tinybase';
import {useMetricsOrMetricsById} from 'tinybase/ui-solid';

createRoot((dispose) => {
  const store = createStore()
    .setTables({
      pets: {
        fido: {species: 'dog', color: 'brown', next: 'felix'},
        felix: {species: 'cat', color: 'black'},
      },
      species: {dog: {price: 5}, cat: {price: 4}},
    })
    .setValues({open: true});
  const metrics = createMetrics(store).setMetricDefinition(
    'highestPrice',
    'species',
    'max',
    'price',
  );
  const indexes = createIndexes(store).setIndexDefinition(
    'bySpecies',
    'pets',
    'species',
  );
  const relationships = createRelationships(store)
    .setRelationshipDefinition('petSpecies', 'pets', 'species', 'species')
    .setRelationshipDefinition('nextPet', 'pets', 'pets', 'next');
  const queries = createQueries(store).setQueryDefinition(
    'petColors',
    'pets',
    ({select, where, param}) => {
      select('color');
      where((getCell) => getCell('species') == param('species'));
    },
    {species: 'dog'},
  );
  const checkpoints = createCheckpoints(store);
  store.setCell('pets', 'fido', 'color', 'walnut');
  checkpoints.setCheckpoint('updated color');
  metrics.getMetric('highestPrice');
  indexes.getSliceIds('bySpecies');
  relationships.getRemoteRowId('petSpecies', 'fido');
  queries.getResultRowIds('petColors');
  useMetricsOrMetricsById(metrics);
  dispose();
});

Since

v8.3.0