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Esempio di codice
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[[["Facile da capire","easyToUnderstand","thumb-up"],["Il problema è stato risolto","solvedMyProblem","thumb-up"],["Altra","otherUp","thumb-up"]],[["Difficile da capire","hardToUnderstand","thumb-down"],["Informazioni o codice di esempio errati","incorrectInformationOrSampleCode","thumb-down"],["Mancano le informazioni o gli esempi di cui ho bisogno","missingTheInformationSamplesINeed","thumb-down"],["Problema di traduzione","translationIssue","thumb-down"],["Altra","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis Java code sample demonstrates how to read multiple, disjoint row ranges from a Bigtable table.\u003c/p\u003e\n"],["\u003cp\u003eThe code initializes a Bigtable client, defines multiple row ranges, and sets a \u003ccode\u003eMultiRowRangeFilter\u003c/code\u003e to specify the ranges for reading.\u003c/p\u003e\n"],["\u003cp\u003eIt utilizes the \u003ccode\u003eScan\u003c/code\u003e operation to retrieve rows that fall within the specified ranges and prints the results.\u003c/p\u003e\n"],["\u003cp\u003eTo set up authentication for a local development environment it is recommended to check the associated guide, as well as using the Bigtable client libraries.\u003c/p\u003e\n"],["\u003cp\u003eThe sample browser can be used to find other Google cloud product code samples.\u003c/p\u003e\n"]]],[],null,["Read rows with multiple ranges.\n\nExplore further\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Read examples](/bigtable/docs/reading-data)\n\nCode sample \n\nJava\n\n\nTo learn how to install and use the client library for Bigtable, see\n[Bigtable client libraries](/bigtable/docs/reference/libraries).\n\n\nTo authenticate to Bigtable, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n /**\n * Example of reading multiple disjoint row ranges.\n */\n public static void readRowRanges() {\n // TODO(developer): Replace these variables before running the sample.\n String projectId = \"my-project-id\";\n String instanceId = \"my-instance-id\";\n String tableId = \"mobile-time-series\";\n readRowRanges(projectId, instanceId, tableId);\n }\n\n public static void readRowRanges(String projectId, String instanceId, String tableId) {\n // Initialize client that will be used to send requests. This client only needs to be created\n // once, and can be reused for multiple requests.\n try (Connection connection = BigtableConfiguration.connect(projectId, instanceId)) {\n Table table = connection.getTable(TableName.valueOf(tableId));\n List\u003cRowRange\u003e ranges = new ArrayList\u003c\u003e();\n\n ranges.add(\n new RowRange(\n Bytes.toBytes(\"phone#4c410523#20190501\"),\n true,\n Bytes.toBytes(\"phone#4c410523#20190601\"),\n false));\n ranges.add(\n new RowRange(\n Bytes.toBytes(\"phone#5c10102#20190501\"),\n true,\n Bytes.toBytes(\"phone#5c10102#20190601\"),\n false));\n Filter filter = new MultiRowRangeFilter(ranges);\n Scan scan = new Scan().setFilter(filter);\n\n ResultScanner rows = table.getScanner(scan);\n\n for (Result row : rows) {\n printRow(row);\n }\n } catch (IOException e) {\n System.out.println(\n \"Unable to initialize service client, as a network error occurred: \\n\" + e.toString());\n }\n }\n\nWhat's next\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=bigtable)."]]