本文整理了Java中util.HBaseHelper.existsTable()方法的一些代码示例，展示了HBaseHelper.existsTable()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。HBaseHelper.existsTable()方法的具体详情如下：
包路径：util.HBaseHelper
类名称：HBaseHelper
方法名：existsTable

HBaseHelper.existsTable介绍

暂无

代码示例

代码示例来源：origin: larsgeorge/hbase-book

public boolean existsTable(String table)
throws IOException {
 return existsTable(TableName.valueOf(table));
}

代码示例来源：origin: larsgeorge/hbase-book

public static void main(String[] args) throws IOException {
  // vv GetTryWithResourcesExample
  Configuration conf = HBaseConfiguration.create(); // co GetTryWithResourcesExample-1-CreateConf Create the configuration.

  // ^^ GetTryWithResourcesExample
  HBaseHelper helper = HBaseHelper.getHelper(conf);
  if (!helper.existsTable("testtable")) {
   helper.createTable("testtable", "colfam1");
  }
  // vv GetTryWithResourcesExample
  try (
   Connection connection = ConnectionFactory.createConnection(conf);
   Table table = connection.getTable(TableName.valueOf("testtable")); // co GetTryWithResourcesExample-2-NewTable Instantiate a new table reference in "try" block.
  ) {
   Get get = new Get(Bytes.toBytes("row1"));
   get.addColumn(Bytes.toBytes("colfam1"), Bytes.toBytes("qual1"));
   Result result = table.get(get);
   byte[] val = result.getValue(Bytes.toBytes("colfam1"),
    Bytes.toBytes("qual1"));
   System.out.println("Value: " + Bytes.toString(val));
  } // co GetTryWithResourcesExample-3-Close No explicit close needed, Java will handle AutoClosable's.
  // ^^ GetTryWithResourcesExample
  helper.close();
 }
}

代码示例来源：origin: larsgeorge/hbase-book

public void dropTable(TableName table) throws IOException {
 if (existsTable(table)) {
  if (admin.isTableEnabled(table)) disableTable(table);
  admin.deleteTable(table);
 }
}

代码示例来源：origin: larsgeorge/hbase-book

public static void main(String[] args) throws IOException {
  // vv GetExample
  Configuration conf = HBaseConfiguration.create(); // co GetExample-1-CreateConf Create the configuration.

  // ^^ GetExample
  HBaseHelper helper = HBaseHelper.getHelper(conf);
  if (!helper.existsTable("testtable")) {
   helper.createTable("testtable", "colfam1");
  }
  // vv GetExample
  Connection connection = ConnectionFactory.createConnection(conf);
  Table table = connection.getTable(TableName.valueOf("testtable")); // co GetExample-2-NewTable Instantiate a new table reference.

  Get get = new Get(Bytes.toBytes("row1")); // co GetExample-3-NewGet Create get with specific row.

  get.addColumn(Bytes.toBytes("colfam1"), Bytes.toBytes("qual1")); // co GetExample-4-AddCol Add a column to the get.

  Result result = table.get(get); // co GetExample-5-DoGet Retrieve row with selected columns from HBase.

  byte[] val = result.getValue(Bytes.toBytes("colfam1"),
   Bytes.toBytes("qual1")); // co GetExample-6-GetValue Get a specific value for the given column.

  System.out.println("Value: " + Bytes.toString(val)); // co GetExample-7-Print Print out the value while converting it back.

  table.close(); // co GetExample-8-Close Close the table and connection instances to free resources.
  connection.close();
  // ^^ GetExample
  helper.close();
 }
}

代码示例来源：origin: larsgeorge/hbase-book

public static void main(String[] args) throws IOException {
  Configuration conf = HBaseConfiguration.create();

  HBaseHelper helper = HBaseHelper.getHelper(conf);
  if (!helper.existsTable("testtable")) {
   helper.createTable("testtable", "colfam1");
  }
  Connection connection = ConnectionFactory.createConnection(conf);
  Table table = connection.getTable(TableName.valueOf("testtable"));

  // vv GetCloneExample
  Get get1 = new Get(Bytes.toBytes("row1"));
  get1.addColumn(Bytes.toBytes("colfam1"), Bytes.toBytes("qual1"));

  Get get2 = new Get(get1);
  Result result = table.get(get2);

  System.out.println("Result : " + result);
  // ^^ GetCloneExample
  table.close();
  connection.close();
  helper.close();
 }
}

代码示例来源：origin: larsgeorge/hbase-book

if (!helper.existsTable("testtable")) {
 helper.createTable("testtable", "colfam1");

代码示例来源：origin: larsgeorge/hbase-book

if (!helper.existsTable("testtable")) {
 helper.createTable("testtable", "colfam1");