Biblioteca Java de origem de dados - Sobre este guia
Mantenha tudo organizado com as coleções
Salve e categorize o conteúdo com base nas suas preferências.
Este guia descreve como usar a biblioteca de fontes de dados de visualização do Google para implementar uma fonte de dados.
Neste guia, fornecemos uma seção de tutorial de Primeiros passos
após os conceitos da Introdução.
Essa abordagem permite criar uma fonte de dados simples e testá-la usando uma
visualização. As outras seções do tutorial são Como usar um armazenamento de dados externo e Como definir recursos e o fluxo de eventos, que abrangem implementações mais complexas. Dependendo dos seus requisitos, pode não ser necessário
concluir os três tutoriais, embora seja recomendável que você
conclua pelo menos a seção Como começar.
As outras seções do guia ajudam você a desenvolver seu conhecimento.
Apresenta SimpleExampleServlet. SimpleExampleServlet é o exemplo de implementação mais simples fornecido com a biblioteca.
Esta seção também fornece instruções detalhadas sobre como executar e
testar o SimpleExampleServlet.
Apresenta CsvDataSourceServlet. CsvDataSourceServlet é
um exemplo de implementação que usa um arquivo CSV como um repositório de dados externo.
Esta seção também fornece instruções detalhadas sobre como executar e
testar o CsvDataSourceServlet.
Apresenta AdvancedExampleServlet2. AdvancedExampleServlet2 é
um exemplo de implementação que define recursos e fluxo
de eventos. Esta seção também fornece instruções detalhadas sobre como
executar e testar AdvancedExampleServlet2.
Oferece uma introdução de alto nível aos pacotes e classes de
chave da biblioteca.
Exemplos de referência rápida
A biblioteca é fornecida com seis exemplos de implementação. Três deles estão descritos neste guia, os outros não. A tabela a seguir ajudará a encontrar um exemplo do tipo de comportamento que você quer implementar.
[[["Fácil de entender","easyToUnderstand","thumb-up"],["Meu problema foi resolvido","solvedMyProblem","thumb-up"],["Outro","otherUp","thumb-up"]],[["Não contém as informações de que eu preciso","missingTheInformationINeed","thumb-down"],["Muito complicado / etapas demais","tooComplicatedTooManySteps","thumb-down"],["Desatualizado","outOfDate","thumb-down"],["Problema na tradução","translationIssue","thumb-down"],["Problema com as amostras / o código","samplesCodeIssue","thumb-down"],["Outro","otherDown","thumb-down"]],["Última atualização 2024-07-10 UTC."],[[["\u003cp\u003eThis guide explains how to use the Google Visualization Data Source Library to create custom data sources for interactive charts using Java and Java Servlet technology.\u003c/p\u003e\n"],["\u003cp\u003eIt includes tutorials on basic setup, using external data stores like CSV files, and defining advanced capabilities like custom event flows.\u003c/p\u003e\n"],["\u003cp\u003eThe guide assumes familiarity with Java, Java Servlets, Google Charts and optionally, the Google Visualization API wire protocol and query language.\u003c/p\u003e\n"],["\u003cp\u003eSeveral example implementations are provided, including \u003ccode\u003eSimpleExampleServlet\u003c/code\u003e, \u003ccode\u003eCsvDataSourceServlet\u003c/code\u003e, and \u003ccode\u003eAdvancedExampleServlet2\u003c/code\u003e, each demonstrating different features of the library.\u003c/p\u003e\n"],["\u003cp\u003eFor more details on the project and its source code, refer to the project's home page.\u003c/p\u003e\n"]]],[],null,["# Data Source Java Library - About This Guide\n\nThis Guide describes how to use the Google Visualization Data Source\nLibrary to implement a data source.\n\nThis guide provides a [Getting Started](/chart/interactive/docs/dev/dsl_get_started) tutorial\nsection after the concepts in the [Introduction](/chart/interactive/docs/dev/dsl_intro).\nThis approach lets you create a simple data source and test it using a\nvisualization. The other tutorial sections are [Using\nan External Data Store](/chart/interactive/docs/dev/dsl_csv) and [Defining\nCapabilities and the Flow of Events](/chart/interactive/docs/dev/dsl_httpservlet), which cover more complex\nimplementations. Depending on your requirements, you might not need to\ncomplete all three tutorials, though it is recommended that you at least\ncomplete the [Getting Started](/chart/interactive/docs/dev/dsl_get_started) section.\nThe other sections of the guide help you to build on your knowledge.\n\nContents\n--------\n\n- [Audience](#audience)\n- [Guide Overview](#overview)\n- [Examples Quick Reference](#quick)\n- [More Information](#more)\n\nAudience\n--------\n\nYou need to be familiar with [Java](http://www.java.com/) and [Java\nservlet technology](http://java.sun.com/products/servlet/overview.html) to use the library.\n\nYou also need to understand [how to\nuse charts](/chart/interactive/docs), and though not essential, it is helpful to be familiar\nwith the Google Visualization API [wire\nprotocol](/chart/interactive/docs/dev/implementing_data_source#requestformat), and the [query\nlanguage](/chart/interactive/docs/querylanguage).\n\nGuide Overview\n--------------\n\nThis guide contains the following sections:\n\n- [Introduction](/chart/interactive/docs/dev/dsl_intro)\n\n\n Introduces the library, providing an overview of how a data source\n works.\n- [Installation](/chart/interactive/docs/dev/dsl_install)\n\n\n Describes the library's prerequisites and dependencies, and how to download\n and build the source code.\n- [Getting Started](/chart/interactive/docs/dev/dsl_get_started)\n\n Introduces `SimpleExampleServlet`. `SimpleExampleServlet` is\n the simplest example implementation that is provided with the library.\n This section also provides step-by-step instructions on how to run and\n test `SimpleExampleServlet`.\n- [Using an External Data Store](/chart/interactive/docs/dev/dsl_csv)\n\n Introduces `CsvDataSourceServlet`. `CsvDataSourceServlet` is\n an example implementation that uses a CSV file as an external data store.\n This section also provides step-by-step instructions on how to run and\n test `CsvDataSourceServlet`.\n- [Defining Capabilities and the Flow of Events](/chart/interactive/docs/dev/dsl_httpservlet)\n\n Introduces `AdvancedExampleServlet2`. `AdvancedExampleServlet2` is\n an example implementation that defines capabilities and flow\n of events. This section also provides step-by-step instructions on how\n to run and test `AdvancedExampleServlet2`.\n- [Handling Security, Errors, Warnings,\n and Logging](/chart/interactive/docs/dev/dsl_errors_and_logging)\n\n Describes how to make your data source secure,\n and how to handle errors, warnings, and logging.\n- [Implementation Tips](/chart/interactive/docs/dev/dsl_key_concepts)\n\n Provides information that will help you write more complex implementations\n of the library.\n- [Library\n Packages and Key Classes](/chart/interactive/docs/dev/dsl_packages)\n\n Provides a high level introduction to the library's packages and key\n classes.\n\nExamples Quick Reference\n------------------------\n\nThe library is provided with six example implementations. Three of these\nare described in this Guide, the others are not. The following\ntable will help\nyou find an example of the type of behavior you want to implement.\n\n|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------|------------------|--------------------|--------------------|\n| **Example** | **Servlet extended** | **Capabilities** | **Flow of events** | **Source of data** |\n| [`SimpleExampleServlet`](http://code.google.com/p/google-visualization-java/source/browse/trunk/examples/src/java/SimpleExampleServlet.java) Described in [Getting Started](/chart/interactive/docs/dev/dsl_get_started) | `DataSourceServlet` | `NONE` | Default | Within class |\n| [CsvDataSourceServlet](http://code.google.com/p/google-visualization-java/source/browse/trunk/examples/src/java/CsvDataSourceServlet.java) Described in [Using an External Data Store](/chart/interactive/docs/dev/dsl_csv) | `DataSourceServlet` | `NONE` | Default | CSV file |\n| [`AdvancedExampleServlet2`](http://code.google.com/p/google-visualization-java/source/browse/trunk/examples/src/java/AdvancedExampleServlet2.java) Described in [Defining Capabilities and the Flow of Events](/chart/interactive/docs/dev/dsl_httpservlet) | `HttpServlet` | `SELECT` | Custom | Within class |\n| [SimpleExampleServlet2](http://code.google.com/p/google-visualization-java/source/browse/trunk/examples/src/java/SimpleExampleServlet2.java) Not described in this Guide | `HttpServlet` ` ` | `NONE` | Custom | Within class |\n| [AdvancedExampleServlet](http://code.google.com/p/google-visualization-java/source/browse/trunk/examples/src/java/AdvancedExampleServlet.java) Not described in this Guide | `DataSourceServlet` | `SELECT` | Default | Within class |\n| [SqlDataSourceServlet](http://code.google.com/p/google-visualization-java/source/browse/trunk/examples/src/java/SqlDataSourceServlet.java) Not described in this Guide | `DataSourceServlet` | `SQL` | Default | SQL database |\n\nMore Information\n----------------\n\nFor information on the Data Source Library project, see the [home\npage](http://code.google.com/p/google-visualization-java/)."]]
