Guice
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Guice | sagan | |
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31 | 103 | |
12,343 | 3,102 | |
0.3% | - | |
7.5 | 7.2 | |
5 days ago | about 1 year ago | |
Java | HTML | |
Apache License 2.0 | BSD 3-clause "New" or "Revised" License |
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Guice
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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.
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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.
- How to dependency injection
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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.
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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.
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Bob Lee Was Killed
He was fairly well known figure in the Java world. RIP.
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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:
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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)
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Dependency Injection in Scala - cake pattern
using libraries from java world, such as Guice;
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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.
sagan
- Backend: ¿cómo avanzar?
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Conceptos básicos sobre el backend
Empeza con esto https://spring.io/
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I think I messed up my CS degree. I am about to graduate and don't feel like I know anything. What do I do?
If you want to do web apps, I'd recommend Django (a python framework) https://docs.djangoproject.com/en/4.1/, but you can do Rails, or Phoenix, or Spring Boot, or whatever. It doesn't terribly matter *which* one you do, as they share characteristics, and, chances are, your company will be using a different one :). Just pick one and go. You can do it. You know a lot more than you think.
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🌦️ WeatherAPI | Introducing real-time weather inside a game.
With the idea planted, and already internalized that I would use spring-boot to create our API, I needed to decide on which engine it would be built. I had been studying Unreal Engine for some time, but because I had more know-how in Unity and because I found this AMAZING weather system, I opted for our last alternative.
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Getting Started with Backend Development in Kotlin Using Spring Boot 3 & MongoDB
This is an introduction article on how to build a RESTful application in Kotlin using Spring Boot 3 and MongoDB Atlas.
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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.
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How do I switch to a different tech stack when companies want experience in that specific stack?
Im stuck between just starting up a project, or if following some starter project for learning. I did a tutorial on the spring.io website, but thats about all I have done so far.
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Struggling to use Spring in internship
I've been following the guides at spring.io, but there's just so many guides there. My company has a template for starting new projects (includes frontend + backend + database) so I decided to start my project using it, thinking the basic guides I followed on REST APIs would help me but I quickly realized it's more complicated than I thought.
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Struggling to learn and develop using Spring in internship
Thanks for the advice. I followed some guides on spring.io, but because I am using a template for starting new projects provided by my company, I found most of them couldn't really translate properly to the template.
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Spring Boot pt 2
Spring makes building web applications fast and hassle-free (spring.io). By removing much of the boilerplate code and configuration associated with web development, you get a modern web programming model that streamlines the development of server-side HTML applications, REST APIs, and bidirectional, event-based systems.
What are some alternatives?
Dagger2 - A fast dependency injector for Android and Java.
spring-petclinic - A sample Spring-based application
HK2
privacyguides.org - Protect your data against global mass surveillance programs.
Weld - Weld, including integrations for Servlet containers and Java SE, examples and documentation
intellij-plugins - Open-source plugins included in the distribution of IntelliJ IDEA Ultimate and other IDEs based on the IntelliJ Platform
Apache DeltaSpike - Mirror of Apache Deltaspike
Spring Boot - Spring Boot
Dynamic CDI - Dynamic Context Dependency Injection
xatkit - The simplest way to build all types of smart chatbots and digital assistants
Feather - Lightweight dependency injection for Java and Android (JSR-330)
Spring Data JPA - Simplifies the development of creating a JPA-based data access layer.