61 lines
1.2 KiB
Go
61 lines
1.2 KiB
Go
package ocean
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import "sync"
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type Collection[T any] interface {
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All() <-chan T
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Delete(key string)
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Exists(key string) bool
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Get(key string) (value T, ok bool)
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Set(key string, value T)
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}
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// collection is a hash map of homogeneous data.
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type collection[T any] struct {
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data sync.Map
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name string
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}
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// NewCollection creates a new collection with the given name.
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func NewCollection[T any](name string) *collection[T] {
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return &collection[T]{name: name}
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}
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// Get returns the value for the given key.
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func (c *collection[T]) Get(key string) (T, bool) {
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value, exists := c.data.Load(key)
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return value.(T), exists
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}
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// Set sets the value for the given key.
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func (c *collection[T]) Set(key string, value T) {
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c.data.Store(key, value)
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}
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// Delete deletes a key from the collection.
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func (c *collection[T]) Delete(key string) {
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c.data.Delete(key)
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}
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// Exists returns whether or not the key exists.
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func (c *collection[T]) Exists(key string) bool {
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_, exists := c.data.Load(key)
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return exists
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}
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// All returns a channel of all objects in the collection.
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func (c *collection[T]) All() <-chan T {
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channel := make(chan T)
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go func() {
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c.data.Range(func(key, value any) bool {
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channel <- value.(T)
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return true
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})
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close(channel)
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}()
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return channel
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}
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