Design Patterns
Guice
Design Patterns | Guice | |
---|---|---|
46 | 31 | |
86,514 | 12,370 | |
- | 0.3% | |
9.6 | 7.3 | |
3 days ago | 1 day ago | |
Java | Java | |
GNU General Public License v3.0 or later | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Design Patterns
-
Top 10 GitHub Repositories for Python and Java Developers
2. Java Design Patterns This repository showcases a collection of design patterns implemented in Java, making it a useful resource for learning how to apply design patterns in your projects. https://github.com/iluwatar/java-design-patterns
-
I have been following the mooc java-1 from few days and i am on part-3 i want to ask some questions
After that, more practice, and then Design Patterns (as in the famous book of the "Gang of Four": "Design Patterns: Elements of Reusable Object Oriented Software"). Here I'd recommend "Head First: Design Patterns" and Java Design Patterns as well as Refactoring Guru (the sites are more reference than course).
-
I made java roadmap website! Any feedbacks welcome!
For Design Patterns - any resource recommendation that misses Java Design Patterns and Refactoring Guru (also for Refactoring) as well as *Head First: Design Patterns, has failed.
-
How do you structure code?
A massive list of design patterns and how they could be implemented (in Java) can be found here.
-
Resources to learn how to create a 2D game engine with CPU rendering.
https://java-design-patterns.com/ has example code for things like object pools that can help with memory management.
-
What are some book recommendations that don't require a specific language.
Sidenote: I would not really use the GoF Design Patterns book anymore. Too dry. I would use "Head First: Design Patterns" - much more modern, much easier to read, or Refactoring Guru or Java Design Patterns (uses Java, but again, only for illustrations).
-
I want to get a book on design patterns. Would you recommend the GOF book or the Head First design patterns one?
Also: https://java-design-patterns.com and https://refactoring.guru/design-patterns
-
How is an Observer pattern possible?
Use either Java Design Patterns or Refactoring Guru. Both resources are far higher quality than yours.
-
Are there any quick videos/articles/resources that go over stuff not explicit taught in University?
Java Design Patterns
-
Learn design pattern !
Java Design Patterns - IMO one of the most accessible sites with very easy explanations
Guice
-
Hexagonal Architecture/Ports And Adapters: Clarifying Key Concepts Using Go
Historically, Ports and Adapters was born in the context where Dependency Inversion Principle (DIP) was getting hot, back in the beginning of the 2000’s. DIP was getting more present on development day to day, and an example of a framework that was a pioneer in such topic is Google Guice.
-
Inversion of Control Containers and the Dependency Injection Pattern (2004)
“There are many advantages to using dependency injection, but doing so manually often leads to a large amount of boilerplate code to be written. Guice is a framework that makes it possible to write code that uses dependency injection without the hassle of writing much of that boilerplate code”
This is a common misconception. Guice’s docs delineate between dependency injection as a pattern and Guice as a framework that supports that pattern.
https://github.com/google/guice/wiki
- How to dependency injection
-
Why dependency injection?
You can (and it's very normal to) use that with new. Dependency injection frameworks (like guice) let you skip passing long parameter lists to constructor arguments like you mention. But you don't really NEED that. They also will solve circular dependency issues and some other things, although a strong argument could be made that you should simply restructure your code so that those issues don't exist.
-
Bob Lee, Former CTO Square, Creator of CashApp, Stabbed to Death in SF
Bob was a nice guy. We had an overlapping tenure at Google in the 2000s. He was one of the original authors of the Guice dependency injection framework: https://github.com/google/guice. When I was earning Java readability at Google, I was fortunate to have had him assigned as a reviewer. Huge loss; he left a very positive impression on me.
-
Bob Lee Was Killed
He was fairly well known figure in the Java world. RIP.
[1] https://github.com/google/guice
-
Handling two contexts
Usually each context has a different scope and lifetime associated with it. Here, it sounds like there are two distinct scopes: server and request (cf. how Guice models scopes: https://github.com/google/guice/wiki/Scopes). It is rarely sensible to merge the scopes or contexts together. If we think about a context, it contains several things:
-
Anyone succeed in running GL5 + Opensearch on FreeBSD?
Exception in thread "main" com.google.inject.CreationException: Unable to create injector, see the following errors: 1) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? MoreSearchAdapter bound at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:57) SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : MoreSearchAdapterProvider.(MoreSearchAdapterProvider.java:31) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:57) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 2) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? V20200730000000_AddGl2MessageIdFieldAliasForEvents$ElasticsearchAdapter bound at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:65) SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : V20200730000000_AddGl2MessageIdFieldAliasForEventsElasticsearchAdapterProvider.(V20200730000000_AddGl2MessageIdFieldAliasForEventsElasticsearchAdapterProvider.java:34) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:65) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 3) [Guice/MissingImplementation]: No implementation for Map>> was bound. Did you mean? QueryBackend bound at VersionAwareStorageModule.bindQueryBackend(VersionAwareStorageModule.java:72) SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : ElasticsearchBackendProvider.(ElasticsearchBackendProvider.java:33) \_ for 2nd parameter at VersionAwareStorageModule.bindQueryBackend(VersionAwareStorageModule.java:72) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 4) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) QuerySuggestionsService bound at ViewsBindings.configure(ViewsBindings.java:245) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : QuerySuggestionsProvider.(QuerySuggestionsProvider.java:31) \_ for 2nd parameter at ViewsBindings.configure(ViewsBindings.java:245) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 5) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) ExportBackend bound at ViewsBindings.registerExportBackendProvider(ViewsBindings.java:255) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : ExportBackendProvider.(ExportBackendProvider.java:31) \_ for 2nd parameter at ViewsBindings.registerExportBackendProvider(ViewsBindings.java:255) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 6) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? IndexToolsAdapter bound at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:62) SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : IndexToolsAdapterProvider.(IndexToolsAdapterProvider.java:31) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:62) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 7) [Guice/MissingImplementation]: No implementation for Map> was bound. Requested by: 1 : ClusterAdapterProvider.(ClusterAdapterProvider.java:31) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:59) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 8) [Guice/MissingImplementation]: No implementation for Map> was bound. Requested by: 1 : NodeAdapterProvider.(NodeAdapterProvider.java:31) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:60) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 9) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? CountsAdapter bound at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:54) SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : CountsAdapterProvider.(CountsAdapterProvider.java:31) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:54) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 10) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? IndexFieldTypePollerAdapter bound at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:61) SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : IndexFieldTypePollerAdapterProvider.(IndexFieldTypePollerAdapterProvider.java:31) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:61) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 11) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? StreamsForFieldRetriever bound at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:53) SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : StreamsForFieldRetrieverProvider.(StreamsForFieldRetrieverProvider.java:33) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:53) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 12) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? IndicesAdapter bound at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:55) SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : IndicesAdapterProvider.(IndicesAdapterProvider.java:31) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:55) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 13) [Guice/MissingImplementation]: No implementation for Map> was bound. Requested by: 1 : MessagesAdapterProvider.(MessagesAdapterProvider.java:31) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:58) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 14) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? SearchesAdapter bound at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:56) SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : SearchesAdapterProvider.(SearchesAdapterProvider.java:31) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:56) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 15) [Guice/MissingImplementation]: No implementation for Map> was bound. Did you mean? V20170607164210_MigrateReopenedIndicesToAliases$ClusterState bound at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:63) SearchVersion annotated with interface DetectedSearchVersion bound at ElasticsearchModule.configure(ElasticsearchModule.java:30) SearchVersion annotated with @Named("elasticsearch_version") bound at NamedConfigParametersModule.registerParameters(NamedConfigParametersModule.java:80) Requested by: 1 : V20170607164210_MigrateReopenedIndicesToAliasesClusterStateAdapterProvider.(V20170607164210_MigrateReopenedIndicesToAliasesClusterStateAdapterProvider.java:31) \_ for 2nd parameter at VersionAwareStorageModule.configure(VersionAwareStorageModule.java:63) Learn more: https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION 15 errors ====================== Full classname legend: ====================== ClusterAdapter: "org.graylog2.indexer.cluster.ClusterAdapter" ClusterAdapterProvider: "org.graylog2.storage.providers.ClusterAdapterProvider" CountsAdapter: "org.graylog2.indexer.counts.CountsAdapter" CountsAdapterProvider: "org.graylog2.storage.providers.CountsAdapterProvider" DetectedSearchVersion: "org.graylog2.storage.DetectedSearchVersion" ElasticsearchBackendProvider: "org.graylog2.storage.providers.ElasticsearchBackendProvider" ElasticsearchModule: "org.graylog2.bindings.ElasticsearchModule" ExportBackend: "org.graylog.plugins.views.search.export.ExportBackend" ExportBackendProvider: "org.graylog.plugins.views.providers.ExportBackendProvider" GeneratedQueryContext: "org.graylog.plugins.views.search.engine.GeneratedQueryContext" IndexFieldTypePollerAdapter: "org.graylog2.indexer.fieldtypes.IndexFieldTypePollerAdapter" IndexFieldTypePollerAdapterProvider: "org.graylog2.storage.providers.IndexFieldTypePollerAdapterProvider" IndexToolsAdapter: "org.graylog2.indexer.IndexToolsAdapter" IndexToolsAdapterProvider: "org.graylog2.storage.providers.IndexToolsAdapterProvider" IndicesAdapter: "org.graylog2.indexer.indices.IndicesAdapter" IndicesAdapterProvider: "org.graylog2.storage.providers.IndicesAdapterProvider" MessagesAdapter: "org.graylog2.indexer.messages.MessagesAdapter" MessagesAdapterProvider: "org.graylog2.storage.providers.MessagesAdapterProvider" MoreSearchAdapter: "org.graylog.events.search.MoreSearchAdapter" MoreSearchAdapterProvider: "org.graylog2.storage.providers.MoreSearchAdapterProvider" Named: "com.google.inject.name.Named" NamedConfigParametersModule: "com.github.joschi.jadconfig.guice.NamedConfigParametersModule" NodeAdapter: "org.graylog2.indexer.cluster.NodeAdapter" NodeAdapterProvider: "org.graylog2.storage.providers.NodeAdapterProvider" Provider: "javax.inject.Provider" QueryBackend: "org.graylog.plugins.views.search.engine.QueryBackend" QuerySuggestionsProvider: "org.graylog.plugins.views.providers.QuerySuggestionsProvider" QuerySuggestionsService: "org.graylog.plugins.views.search.engine.QuerySuggestionsService" SearchVersion: "org.graylog2.storage.SearchVersion" SearchesAdapter: "org.graylog2.indexer.searches.SearchesAdapter" SearchesAdapterProvider: "org.graylog2.storage.providers.SearchesAdapterProvider" StreamsForFieldRetriever: "org.graylog2.indexer.fieldtypes.streamfiltered.esadapters.StreamsForFieldRetriever" StreamsForFieldRetrieverProvider: "org.graylog2.storage.providers.StreamsForFieldRetrieverProvider" V20170607164210_MigrateReopenedIndicesToAliases$ClusterState: "org.graylog2.migrations.V20170607164210_MigrateReopenedIndicesToAliases$ClusterState" V20170607164210_MigrateReopenedIndicesToAliasesClusterStateAdapterProvider: "org.graylog2.storage.providers.V20170607164210_MigrateReopenedIndicesToAliasesClusterStateAdapterProvider" V20200730000000_AddGl2MessageIdFieldAliasForEvents$ElasticsearchAdapter: "org.graylog.plugins.views.migrations.V20200730000000_AddGl2MessageIdFieldAliasForEvents$ElasticsearchAdapter" V20200730000000_AddGl2MessageIdFieldAliasForEventsElasticsearchAdapterProvider: "org.graylog2.storage.providers.V20200730000000_AddGl2MessageIdFieldAliasForEventsElasticsearchAdapterProvider" VersionAwareStorageModule: "org.graylog2.storage.VersionAwareStorageModule" ViewsBindings: "org.graylog.plugins.views.ViewsBindings" ======================== End of classname legend: ======================== at com.google.inject.internal.Errors.throwCreationExceptionIfErrorsExist(Errors.java:568) at com.google.inject.internal.InternalInjectorCreator.initializeStatically(InternalInjectorCreator.java:163) at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110) at com.google.inject.Guice.createInjector(Guice.java:87) at org.graylog2.shared.bindings.GuiceInjectorHolder.createInjector(GuiceInjectorHolder.java:34) at org.graylog2.bootstrap.CmdLineTool.setupInjector(CmdLineTool.java:502) at org.graylog2.bootstrap.CmdLineTool.doRun(CmdLineTool.java:306) at org.graylog2.bootstrap.CmdLineTool.run(CmdLineTool.java:260) at org.graylog2.bootstrap.Main.main(Main.java:45)
-
Dependency Injection in Scala - cake pattern
using libraries from java world, such as Guice;
-
Dependency injection with AWS Lambdas in java
As said in the title, we will focus on the dependency inversion principle and one of its application : dependency injection. For production-ready applications, it would be better to rely on a framework and not implement its own container. For it, the java ecosystem have 3 frameworks available : Spring, Guice and Dagger.
What are some alternatives?
Togglz - Feature Flags for the Java platform
Dagger2 - A fast dependency injector for Android and Java.
Modern Java - A Guide to Java 8 - Modern Java - A Guide to Java 8
HK2
FF4J - Feature Flags for Java made easy
Weld - Weld, including integrations for Servlet containers and Java SE, examples and documentation
Codename One - Cross-platform framework for building truly native mobile apps with Java or Kotlin. Write Once Run Anywhere support for iOS, Android, Desktop & Web.
Apache DeltaSpike - Mirror of Apache Deltaspike
failsafe - Fault tolerance and resilience patterns for the JVM
Dynamic CDI - Dynamic Context Dependency Injection
sitemapgen4j - SitemapGen4j is a library to generate XML sitemaps in Java.
Feather - Lightweight dependency injection for Java and Android (JSR-330)