Examples with ClientOpts org.apache.accumulo.examples.cli.ClientOpts used on opensource projects

Example 1 with ClientOpts

use of org.apache.accumulo.examples.cli.ClientOpts in project accumulo-examples by apache.

the class RowOperations method main.

public static void main(String[] args) throws AccumuloException, AccumuloSecurityException, TableExistsException, TableNotFoundException, MutationsRejectedException {
    ClientOpts opts = new ClientOpts();
    ScannerOpts scanOpts = new ScannerOpts();
    BatchWriterOpts bwOpts = new BatchWriterOpts();
    opts.parseArgs(RowOperations.class.getName(), args, scanOpts, bwOpts);
    // First the setup work
    connector = opts.getConnector();
    // lets create an example table
    connector.tableOperations().create(tableName);
    // lets create 3 rows of information
    Text row1 = new Text("row1");
    Text row2 = new Text("row2");
    Text row3 = new Text("row3");
    // Which means 3 different mutations
    Mutation mut1 = new Mutation(row1);
    Mutation mut2 = new Mutation(row2);
    Mutation mut3 = new Mutation(row3);
    // And we'll put 4 columns in each row
    Text col1 = new Text("1");
    Text col2 = new Text("2");
    Text col3 = new Text("3");
    Text col4 = new Text("4");
    // Now we'll add them to the mutations
    mut1.put(new Text("column"), col1, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut1.put(new Text("column"), col2, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut1.put(new Text("column"), col3, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut1.put(new Text("column"), col4, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut2.put(new Text("column"), col1, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut2.put(new Text("column"), col2, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut2.put(new Text("column"), col3, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut2.put(new Text("column"), col4, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut3.put(new Text("column"), col1, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut3.put(new Text("column"), col2, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut3.put(new Text("column"), col3, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    mut3.put(new Text("column"), col4, System.currentTimeMillis(), new Value("This is the value for this key".getBytes(UTF_8)));
    // Now we'll make a Batch Writer
    bw = connector.createBatchWriter(tableName, bwOpts.getBatchWriterConfig());
    // And add the mutations
    bw.addMutation(mut1);
    bw.addMutation(mut2);
    bw.addMutation(mut3);
    // Force a send
    bw.flush();
    // Now lets look at the rows
    Scanner rowThree = getRow(scanOpts, new Text("row3"));
    Scanner rowTwo = getRow(scanOpts, new Text("row2"));
    Scanner rowOne = getRow(scanOpts, new Text("row1"));
    // And print them
    log.info("This is everything");
    printRow(rowOne);
    printRow(rowTwo);
    printRow(rowThree);
    System.out.flush();
    // Now lets delete rowTwo with the iterator
    rowTwo = getRow(scanOpts, new Text("row2"));
    deleteRow(rowTwo);
    // Now lets look at the rows again
    rowThree = getRow(scanOpts, new Text("row3"));
    rowTwo = getRow(scanOpts, new Text("row2"));
    rowOne = getRow(scanOpts, new Text("row1"));
    // And print them
    log.info("This is row1 and row3");
    printRow(rowOne);
    printRow(rowTwo);
    printRow(rowThree);
    System.out.flush();
    // Should only see the two rows
    // Now lets delete rowOne without passing in the iterator
    deleteRow(scanOpts, row1);
    // Now lets look at the rows one last time
    rowThree = getRow(scanOpts, new Text("row3"));
    rowTwo = getRow(scanOpts, new Text("row2"));
    rowOne = getRow(scanOpts, new Text("row1"));
    // And print them
    log.info("This is just row3");
    printRow(rowOne);
    printRow(rowTwo);
    printRow(rowThree);
    System.out.flush();
    // Should only see rowThree
    // Always close your batchwriter
    bw.close();
    // and lets clean up our mess
    connector.tableOperations().delete(tableName);
// fin~
}