filtered-collection | A simple backbone.js filtered collection | Widget library

by dlikhten JavaScript Version: Current License: MIT

X-Ray Key Features Code Snippets(1)Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | filtered-collection Summary

filtered-collection is a JavaScript library typically used in User Interface, Widget, MongoDB applications. filtered-collection has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

This is a simple filtered collection implemented using Backbone.Collection. The goal here is to create a collection which, given a filter function, will just contain elements of the original which pass the filter. Supports add/remove/reset events of the original to modify the filtered version.

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Quality

Security

License

Reuse

Support

filtered-collection has a low active ecosystem.

It has 88 star(s) with 19 fork(s). There are 4 watchers for this library.

It had no major release in the last 6 months.

There are 2 open issues and 11 have been closed. On average issues are closed in 50 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of filtered-collection is current.

Quality

filtered-collection has no bugs reported.

Security

filtered-collection has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

filtered-collection is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

filtered-collection releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

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filtered-collection Key Features

No Key Features are available at this moment for filtered-collection.

filtered-collection Examples and Code Snippets

Returns an iterable that contains elements that match the given predicate .

java

Lines of Code : 11

License : Non-SPDX

Copy

@Override
  public final FluentIterable filter(Predicate predicate) {
    var iterator = iterator();
    while (iterator.hasNext()) {
      var nextElement = iterator.next();
      if (!predicate.test(nextElement)) {
        iterator.remove();

Community Discussions

Trending Discussions on filtered-collection

Load `relationship` with subset of items in SqlAlchemy (similar to Django's `Prefetch` object)

Using contains_eager with a filter but without filtering out parents that have no matching children

QUESTION

Load `relationship` with subset of items in SqlAlchemy (similar to Django's `Prefetch` object)

Asked 2019-May-02 at 11:21

Is there a way to retrieve a subset of elements from a relationship in SqlAlchemy but keeping the order I defined in the backref (relationship) when the class was created?

Let's say I have two tables/models: A User and a UserLog which contains actions performed by the user (the Base is just a declarative_base())

Each UserLog has a ForeignKey to the ID of the User that performed the action, and the type of action for each log can be chosen from an Enum. Each UserLog also has a created timestamp I order with: On a regular scenario, I'd like to get the logs from oldest to newest (oldest first).

However, I'd also like to be able to get a particular user with only a subset of Logs (logs of a particular action) loaded. I understand this goes agains the "gist" of the joined load, since I would be getting an unrealistic state of the database (there are more logs linked to the user that my fetched User object would reflect), but it would be helpful in certain occasions.

...

ANSWER

Answered 2019-Apr-22 at 13:29

When using contains_eager, you tell SQLAlchemy to ignore the configured relationship and instead fill the .logs container from your hand-crafted query. That means any ordering set on the relationship is also ignored.

So if you need the log data to be ordered, you need to do so yourself:

Source https://stackoverflow.com/questions/55783561

QUESTION

Using contains_eager with a filter but without filtering out parents that have no matching children

Asked 2017-May-09 at 00:42

Reading the SQLAlchemy documentation:

http://docs.sqlalchemy.org/en/latest/orm/loading_relationships.html#using-contains-eager-to-load-a-custom-filtered-collection-result

The above query will load only User objects which contain at least Address object that contains the substring 'ed' in its email field.

I am trying to do something similar, but I also want to retrieve all User objects which have no matching addresses at all.

To explain myself better, I have modified this code which is one of the examples from the SQLAlchemy documentation:

...

ANSWER

Answered 2017-May-09 at 00:42

You can change the join condition:

Source https://stackoverflow.com/questions/43858179

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install filtered-collection

Inside your sprockets file:.
Download the source, minify as you see fit by your minification strategy.

Support

Please, do not contribute without a spec. Being tested is critically important to this project, as it's a framework level component, and so its failure will be damn hard to detect. Also, no tab characters, 2 spaces only. Minifiers can handle this stuff for you.

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