Biblioteca de Java de fuente de datos: Acerca de esta guía
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En esta guía, se describe cómo usar la biblioteca de fuentes de datos de visualización de Google para implementar una fuente de datos.
En esta guía, se proporciona una sección del instructivo de introducción después de los conceptos de la Introducción.
Este enfoque te permite crear una fuente de datos simple y probarla mediante una visualización. Las otras secciones del instructivo son Cómo usar un almacén de datos externo y Cómo definir las funciones y el flujo de eventos, que abarcan implementaciones más complejas. Según tus requisitos, es posible que no necesites completar los tres instructivos, aunque se recomienda que, al menos, completes la sección Comenzar.
Las otras secciones de la guía te ayudan a ampliar tus conocimientos.
Presenta SimpleExampleServlet. SimpleExampleServlet es el ejemplo de implementación más simple que se proporciona con la biblioteca.
En esta sección, también se proporcionan instrucciones paso a paso sobre cómo ejecutar y probar SimpleExampleServlet.
Presenta CsvDataSourceServlet. CsvDataSourceServlet es una implementación de ejemplo que usa un archivo CSV como almacén de datos externo.
En esta sección, también se proporcionan instrucciones paso a paso sobre cómo ejecutar y probar CsvDataSourceServlet.
Presenta AdvancedExampleServlet2. AdvancedExampleServlet2 es una implementación de ejemplo que define las capacidades y el flujo de eventos. En esta sección, también se proporcionan instrucciones paso a paso para ejecutar y probar AdvancedExampleServlet2.
Proporciona una introducción de alto nivel a los paquetes y las clases clave de la biblioteca.
Ejemplos de referencia rápida
La biblioteca se proporciona con seis implementaciones de ejemplo. Tres de ellas se describen en esta guía, las otras no. La siguiente tabla te ayudará a encontrar un ejemplo del tipo de comportamiento que deseas implementar.
[[["Fácil de comprender","easyToUnderstand","thumb-up"],["Resolvió mi problema","solvedMyProblem","thumb-up"],["Otro","otherUp","thumb-up"]],[["Falta la información que necesito","missingTheInformationINeed","thumb-down"],["Muy complicado o demasiados pasos","tooComplicatedTooManySteps","thumb-down"],["Desactualizado","outOfDate","thumb-down"],["Problema de traducción","translationIssue","thumb-down"],["Problema con las muestras o los códigos","samplesCodeIssue","thumb-down"],["Otro","otherDown","thumb-down"]],["Última actualización: 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/)."]]
