Examples of com.netflix.astyanax.MutationBatch

com.netflix.astyanax.MutationBatch
// of // CF // in // Cassandra StringSerializer.get(), // Row key serializer (implies string type) StringSerializer.get(), // Column name serializer (implies string // type) ColumnType.STANDARD); // This is a standard row // Create a batch mutation RowMutationBatch m = keyspace.prepareMutationBatch(); // Start mutate a column family for a specific row key ColumnFamilyMutation<String> cfm = m.row(cfSuper, "UserId").putColumn("Address", "976 Elm St.") .putColumn("Age", 50).putColumn("Gender", "Male"); // To delete a row m.row(cfSuper, "UserId").delete(); // Finally, execute the query m.execute(); } @author elandau @param < K>

    @Override
    public void delete(K id) throws PersistenceException {
        try {
            if (verbose)
                LOG.info(String.format("%s : Deleting id '%s'", columnFamily.getName(), id));
            MutationBatch mb = getMutationBatch();
            mb.withRow(columnFamily, id).delete();
            if (autoCommit)
                mb.execute();
        } catch(Exception e) {
            throw new PersistenceException("failed to delete entity " + id, e);
        }
    }

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            if (verbose)
                LOG.info(String.format("%s : Removing entity '%s'", columnFamily.getName(), entity));
            
            lifecycleHandler.onPreRemove(entity);
            id = entityMapper.getEntityId(entity);
            MutationBatch mb = getMutationBatch();
            entityMapper.fillMutationBatchForDelete(mb, columnFamily, entity);
            if (autoCommit)
                mb.execute();
            lifecycleHandler.onPostRemove(entity);
        } catch(Exception e) {
            throw new PersistenceException("failed to delete entity " + id, e);
        }
    }

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    /**
     * @inheritDoc
     */
    @Override
    public void delete(Collection<K> ids) throws PersistenceException {
        MutationBatch mb = getMutationBatch();        
        try {
            if (verbose)
                LOG.info(String.format("%s : Delete ids '%s'", columnFamily.getName(), ids.toString()));
            for (K id : ids) {
                mb.withRow(columnFamily, id).delete();
            }
            if (autoCommit)
                mb.execute();
        } catch(Exception e) {
            throw new PersistenceException("failed to delete entities " + ids, e);
        }
    }

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                                                                      // all
                                                                      // just
                                                                      // Class
                                                                      // anyway


        MutationBatch mutationBatch = keyspace.prepareMutationBatch();
        mutationBatch.withRow(columnFamily,
                mapping.getIdValue(item, idFieldClass)).delete();
        mutationBatch.execute();
    }

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        }
    }


    @Override
    public void remove(Collection<T> entities) throws PersistenceException {
        MutationBatch mb = getMutationBatch();        
        try {
            for (T entity : entities) {
                lifecycleHandler.onPreRemove(entity);
                if (verbose)
                    LOG.info(String.format("%s : Deleting '%s'", columnFamily.getName(), entity));
                entityMapper.fillMutationBatchForDelete(mb, columnFamily, entity);
            }
            mb.execute();
            for (T entity : entities) {
                lifecycleHandler.onPostRemove(entity);
            }
        } catch(Exception e) {
            throw new PersistenceException("failed to delete entities ", e);

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    /**
     * @inheritDoc
     */
    @Override
    public void put(Collection<T> entities) throws PersistenceException {
        MutationBatch mb = getMutationBatch();        
        try {
            for (T entity : entities) {
                lifecycleHandler.onPrePersist(entity);
                if (verbose)
                    LOG.info(String.format("%s : Writing '%s'", columnFamily.getName(), entity));
                entityMapper.fillMutationBatch(mb, columnFamily, entity);           
            }
            if (autoCommit)
                mb.execute();
            
            for (T entity : entities) {
                lifecycleHandler.onPostPersist(entity);
            }

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                                                                      // all
                                                                      // just
                                                                      // Class
                                                                      // anyway


        MutationBatch mutationBatch = keyspace.prepareMutationBatch();
        ColumnListMutation<String> columnListMutation = mutationBatch.withRow(
                columnFamily, mapping.getIdValue(item, idFieldClass));
        mapping.fillMutation(item, columnListMutation);


        mutationBatch.execute();
    }

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    @Override
    public void commit() throws PersistenceException {
        if (verbose)
            LOG.info(String.format("%s : Commit mutation", columnFamily.getName()));
        
        MutationBatch mb = getMutationBatch();
        if (mb != null) {
            try {
                mb.execute();
            } catch (ConnectionException e) {
                throw new PersistenceException("Failed to commit mutation batch", e);
            }
        }
        else {

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        Assert.assertNull(column);
    }
    
    @Test
    public void testFunctionalQuery() throws Exception {
      MutationBatch m = keyspace.prepareMutationBatch();


        for (char keyName = 'A'; keyName <= 'Z'; keyName++) {
            String rowKey = Character.toString(keyName);
            ColumnListMutation<String> cfmStandard = m.withRow(CF_STANDARD1, rowKey);
            for (char cName = 'a'; cName <= 'z'; cName++) {
                cfmStandard.putColumn(Character.toString(cName),
                        (int) (cName - 'a') + 1, null);
            }
            m.withCaching(true);
            m.execute();
            m.discardMutations();
        }
        
        OperationResult<ColumnList<String>> r1 = keyspace
                .prepareQuery(CF_STANDARD1).getKey("A").execute();
        Assert.assertTrue(26 <= r1.getResult().size());

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    }


    @Test
    public void testHasValue() throws Exception {


      MutationBatch m = keyspace.prepareMutationBatch();
      m.withRow(CF_USER_INFO, "acct1234")
      .putColumn("firstname", "john", null)
      .putColumn("lastname", "smith", null)
      .putColumn("address", "555 Elm St", null)
      .putColumn("age", 30, null)
      .putEmptyColumn("empty");


      m.execute();
      ColumnList<String> response = keyspace.prepareQuery(CF_USER_INFO).getRow("acct1234").execute().getResult();
      Assert.assertEquals("firstname", response.getColumnByName("firstname").getName());
      Assert.assertEquals("firstname", response.getColumnByName("firstname").getName());
      Assert.assertEquals("john", response.getColumnByName("firstname").getStringValue());
      Assert.assertEquals("john", response.getColumnByName("firstname").getStringValue());

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