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Java Metadata.getKeyspace方法代碼示例

本文整理匯總了Java中com.datastax.driver.core.Metadata.getKeyspace方法的典型用法代碼示例。如果您正苦於以下問題：Java Metadata.getKeyspace方法的具體用法？Java Metadata.getKeyspace怎麽用？Java Metadata.getKeyspace使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類com.datastax.driver.core.Metadata的用法示例。


在下文中一共展示了Metadata.getKeyspace方法的12個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。

示例1: getSchema

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
public List<Column> getSchema(String keySpace, String tableName) {
	Metadata m = session.getCluster().getMetadata();
	KeyspaceMetadata km = m.getKeyspace(keySpace);
	if (km == null)
		return null;
	TableMetadata tm = km.getTable(tableName);
	if (tm == null)
		return null;
	// build schema
	List<Column> columns = new LinkedList<Column>();
	for (ColumnMetadata cm : tm.getColumns()) {
		if (!meta.contains(cm.getName()))
			columns.add(Column.newBuilder().setName(cm.getName())
					.setType(toSimbaType(cm.getType().toString())).build());
	}

	return columns;

}
開發者ID:SimbaService，項目名稱:Simba，代碼行數:20，代碼來源:CassandraHandler.java

示例2: createKeySpace

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
private void createKeySpace() {
   try (Session session = cluster.connect()) { // session without an associated keyspace
      Metadata clusterMetadata = cluster.getMetadata();
      boolean keyspaceExists = clusterMetadata.getKeyspace(configuration.keyspace()) != null;
      if (!keyspaceExists) {
         log.debug("Creating a keyspace " + configuration.keyspace());
         session.execute("CREATE KEYSPACE IF NOT EXISTS " + configuration.keyspace() + " WITH replication = " +
                               configuration.replicationStrategy() + ";");
      }
      boolean entryTableExists = clusterMetadata.getKeyspace(configuration.keyspace())
            .getTable(configuration.entryTable()) != null;
      if (!entryTableExists) {
         log.debug("Creating an entry table " + configuration.entryTable());
         session.execute("CREATE TABLE " + configuration.keyspace() + "." + configuration.entryTable() + " (" +
                               "key blob PRIMARY KEY," +
                               "value blob," +
                               "metadata blob) WITH COMPRESSION = " + configuration.compression() + ";");
      }
   } catch (Exception e) {
      throw log.errorCreatingKeyspace(e);
   }
}
開發者ID:infinispan，項目名稱:infinispan-cachestore-cassandra，代碼行數:23，代碼來源:CassandraStore.java

示例3: detectSchema

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
/**
 * Performs an analysis of the given keyspace in a Cassandra cluster
 * {@link Cluster} instance and detects the cassandra types structure based
 * on the metadata provided by the datastax cassandra java client.
 *
 * @see #detectTable(TableMetadata)
 *
 * @param cluster
 *            the cluster to inspect
 * @param keyspaceName
 * @return a mutable schema instance, useful for further fine tuning by the
 *         user.
 */
public static SimpleTableDef[] detectSchema(Cluster cluster, String keyspaceName) {
    final Metadata metadata = cluster.getMetadata();
    final KeyspaceMetadata keyspace = metadata.getKeyspace(keyspaceName);
    if (keyspace == null) {
        throw new IllegalArgumentException("Keyspace '" + keyspaceName + "' does not exist in the database");
    }
    final Collection<TableMetadata> tables = keyspace.getTables();
    final SimpleTableDef[] result = new SimpleTableDef[tables.size()];
    int i = 0;
    for (final TableMetadata tableMetaData : tables) {
        final SimpleTableDef table = detectTable(tableMetaData);
        result[i] = table;
        i++;
    }
    return result;
}
開發者ID:apache，項目名稱:metamodel，代碼行數:30，代碼來源:CassandraDataContext.java

示例4: getTableNames

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
public List<String> getTableNames(String keySpace)
{
    Metadata clusterMetadata = cluster.getMetadata();
    KeyspaceMetadata keyspaceMetadata = clusterMetadata.getKeyspace(keySpace);
    if (keyspaceMetadata == null) {
        return ImmutableList.of();
    }
    return keyspaceMetadata.getTables().stream()
            .map(TableMetadata::getName)
            .collect(toList());
}
開發者ID:prestodb，項目名稱:tempto，代碼行數:12，代碼來源:CassandraQueryExecutor.java

示例5: initialize

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
private void initialize() {
	Session session = cluster.connect();
	Metadata metadata = cluster.getMetadata();
	KeyspaceMetadata keyspaceMetadata = metadata.getKeyspace(KEYSPACE);

	if (keyspaceMetadata == null) {
		session.execute("CREATE KEYSPACE "
				+ KEYSPACE
				+ " WITH REPLICATION = { 'class' : 'org.apache.cassandra.locator.SimpleStrategy', 'replication_factor': '1' } AND DURABLE_WRITES = true;");
	}

	session = cluster.connect(KEYSPACE);
	metadata = cluster.getMetadata();
	keyspaceMetadata = metadata.getKeyspace(KEYSPACE);
	TableMetadata dataTableMetadata = keyspaceMetadata.getTable(DATA_TABLE);

	if (dataTableMetadata == null) {
		session.execute("CREATE TABLE "
				+ KEYSPACE
				+ "."
				+ DATA_TABLE
				+ " ("
				+ DATA_TABLE_ATTRIBUTE_1
				+ " ascii,"
				+ DATA_TABLE_ATTRIBUTE_2
				+ " timeuuid,"
				+ DATA_TABLE_ATTRIBUTE_3
				+ " blob,PRIMARY KEY ("
				+ DATA_TABLE_ATTRIBUTE_1
				+ ", "
				+ DATA_TABLE_ATTRIBUTE_2
				+ ")) WITH COMPACT STORAGE AND read_repair_chance = 0.0 AND dclocal_read_repair_chance = 0.1 AND gc_grace_seconds = 864000 AND bloom_filter_fp_chance = 0.01 AND caching = { 'keys' : 'ALL', 'rows_per_partition' : 'NONE' } AND comment = '' AND compaction = { 'class' : 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy' } AND compression = { 'sstable_compression' : 'org.apache.cassandra.io.compress.LZ4Compressor' } AND default_time_to_live = 0 AND speculative_retry = 'NONE' AND min_index_interval = 128 AND max_index_interval = 2048;");
	}
}
開發者ID:markusstocker，項目名稱:emrooz，代碼行數:35，代碼來源:CassandraDataStore.java

示例6: fetchTableMetadata

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
/**
 * Fetches table metadata from the underlying datastore, using DataStax java driver.
 *
 * @return the table metadata as returned by the driver.
 */
public TableMetadata fetchTableMetadata() {

    Metadata metadata = getSession().getCluster().getMetadata();
    KeyspaceMetadata ksMetadata = metadata.getKeyspace(quote(this.catalog));

    if (ksMetadata != null) {
        return ksMetadata.getTable(quote(this.table));
    } else {
        return null;
    }
}
開發者ID:Stratio，項目名稱:deep-spark，代碼行數:17，代碼來源:CassandraDeepJobConfig.java

示例7: execute

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
/**
 *  Execute when shCQL is DESCRIBE KEYSPACE anyvalue
 *  @param metaData
 * @return  table
 */
@Override
public Table execute(Metadata metaData) {
    KeyspaceMetadata keySpaceMetada = metaData.getKeyspace(param);
    FunctionalList<TableMetadata,RowData> functionalList = new FunctionalList<>(new ArrayList<>(keySpaceMetada.getTables()));
    List<RowData> rows = functionalList.map(new TableMetadataToRowDataFunction());
    rows.add(0,buildFirst(keySpaceMetada.toString()));
    return new Table(new ListUtils<String>().buildList(),rows);
}
開發者ID:Stratio，項目名稱:Explorer，代碼行數:14，代碼來源:DescribeKeySpaceAnyExecutor.java

示例8: setTableFieldCombo

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
private void setTableFieldCombo() {

        Runnable fieldLoader = new Runnable() {
        	@Override
    		public void run() {
        		if (!shell.isDisposed()) {
        			String nodes = transMeta.environmentSubstitute(hostText.getText());
        			String port_s = transMeta.environmentSubstitute(portText.getText());
        			String username = transMeta.environmentSubstitute(userText.getText());
        			String password = transMeta.environmentSubstitute(passText.getText());
        			String keyspace = transMeta.environmentSubstitute(keyspaceText.getText());
        			Boolean withSSL = sslenabledBut.getSelection();
        			String truststorefile = transMeta.environmentSubstitute(truststorefileText.getText());
        			String truststorepass = transMeta.environmentSubstitute(truststorepassText.getText());
        			ConnectionCompression compression = ConnectionCompression.fromString(wCompression.getText());
        			String columnFamily = columnFamilyCombo.getText();

        			ciFields[0].setComboValues(new String[0]);
        			if (!Const.isEmpty(columnFamily)) {
        				String[] fieldNames = null;
        				try {
        					connection = Utils.connect(nodes, port_s, username, password, keyspace, withSSL,
        							truststorefile, truststorepass, compression);
        					Cluster cluster = connection.getSession().getCluster();
        					Metadata clusterMeta = cluster != null ? cluster.getMetadata() : null;
        					KeyspaceMetadata keyspaceMeta = clusterMeta != null ? clusterMeta.getKeyspace(keyspace) : null;
        					TableMetadata tableMeta = keyspaceMeta != null ? keyspaceMeta.getTable(columnFamily) : null;

        					if (tableMeta != null) {
        						List<ColumnMetadata> column = tableMeta.getColumns();
        						Iterator<ColumnMetadata> iter = column.iterator();
        						fieldNames = new String[column.size()];
        						int i = 0;
        						while (iter.hasNext()) {
        							fieldNames[(i++)] = iter.next().getName();
        						}
        					}
        				} catch (Exception localException) {
        					localException.printStackTrace();
        				}

        				if (!fieldsList.isDisposed()) {
        					ciFields[0].setComboValues(fieldNames);
        				}
        			}
        			if (connection != null)
        				connection.release();
        		}
        	}
        };
        this.shell.getDisplay().asyncExec(fieldLoader);
    }
開發者ID:bcolas，項目名稱:pentaho-cassandra-plugin，代碼行數:53，代碼來源:CassandraOutputDialog.java

示例9: healthCheckKeyspaceExists

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
public boolean healthCheckKeyspaceExists() {
    Metadata metaData = cluster.getMetadata();
    KeyspaceMetadata kmd = metaData.getKeyspace(HEALTHCHECK_KEYSPACE_NAME);
    return kmd != null;
}
開發者ID:lookout，項目名稱:cassandra-health-check，代碼行數:6，代碼來源:CassandraHealthCheck.java

示例10: getHealthcheckKeyspaceReplicationFactor

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
public int getHealthcheckKeyspaceReplicationFactor() {
    Metadata metaData = cluster.getMetadata();
    KeyspaceMetadata kmd = metaData.getKeyspace(HEALTHCHECK_KEYSPACE_NAME);
    Map<String, String> replicationInfo = kmd.getReplication();
    return Integer.parseInt(replicationInfo.get("replication_factor"));
}
開發者ID:lookout，項目名稱:cassandra-health-check，代碼行數:7，代碼來源:CassandraHealthCheck.java

示例11: accept

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
@Override
	public void accept(final Configuration<Map<String, Object>> configuration) {
		deletionBatchSize = configuration.getParameter("delete-batch-size", Integer.valueOf(1000));
		
		final String hosts = configuration.getParameter("cassandra-contact-points", "localhost");

		final Cluster.Builder builder = Cluster.builder()
				.addContactPoints(hosts.split(","))
				.withLoadBalancingPolicy(configureLoadBalancingPolicy(configuration))
				.withQueryOptions(configureQueryOptions(configuration))
				.withPoolingOptions(configurePoolingOptions(configuration))
				.withReconnectionPolicy(configureReconnectionPolicy(configuration))
				.withRetryPolicy(configureRetryPolicy(configuration))
				.withSocketOptions(configureSocketOptions(configuration));

		final Compression compression = configureCompression(configuration);

		if (compression != null) {
			builder.withCompression(compression);
		}
		
		final String keyspaceName = configuration.getParameter("keyspace-name", "C2XDB");
		final Boolean createSchema = configuration.getParameter("create-schema", Boolean.TRUE);
				
		cluster = builder.build();
		final Metadata metadata = cluster.getMetadata();
		final KeyspaceMetadata keyspaceMetadata = metadata.getKeyspace(keyspaceName);

		session = cluster.connect();

		if (keyspaceMetadata == null) {	
			createKeyspace(keyspaceName, configuration);
			session.execute("USE " + keyspaceName);
			if (createSchema) {
				createSchema(configuration);
			}
		} else {
			session.execute("USE " + keyspaceName);
		}
		
		dictionary = new TransientNodeDictionary("TEST_DICTIONARY", new TransientNodeDictionary("NEVER_USED"), 1000000);
//				new CacheNodectionary(
//					"TopLevelCacheDictionary",
//					new KnownURIsDictionary(
//						"KnownURIsDictionary",
//						new ThreeTieredNodeDictionary(
//								"ThreeTieredDictionary",
//								new CacheStringDictionary(
//										"NamespacesCacheDictionary",
//										new PersistentStringDictionary("NamespacesDictionary", "DICT_NAMESPACES"),
//										configuration.getParameter("namespaces-id-cache-size", Integer.valueOf(1000)),
//										configuration.getParameter("namespaces-value-cache-size", Integer.valueOf(1000)),
//										false),
//								new TransientStringDictionary("LocalNamesDictionary"),
//								new CacheNodectionary(
//										"LiteralsAndBNodesCacheDictionary",
//										new TransientNodeDictionary(
//												"LiteralAndBNodesDictionary",
//												new PersistentNodeDictionary("LongLiteralsDictionary"),
//												configuration.getParameter("long-literals-threshold", Integer.valueOf(1000))),
//										configuration.getParameter("literals-bnodes-id-cache-size", Integer.valueOf(50000)),
//										configuration.getParameter("literals-bnodes-value-cache-size", Integer.valueOf(50000)),
//										true))),
//					configuration.getParameter("known-uris-id-cache-size", Integer.valueOf(2000)),
//					configuration.getParameter("known-uris-value-cache-size", Integer.valueOf(2000)),
//					true);
		try {
			dictionary.initialise(this);
		} catch (InitialisationException e) {
			throw new RuntimeException(e);
		}
	}
開發者ID:spaziocodice，項目名稱:jena-nosql，代碼行數:73，代碼來源:CassandraStorageLayerFactory.java

示例12: init

import com.datastax.driver.core.Metadata; //導入方法依賴的package包/類
public void init(final String keyspace, final String columnFamily) {

    this.keyspace = keyspace;
    this.columnFamily = columnFamily;

    // connect to the cluster
    Cluster.Builder clusterBuilder = Cluster.builder();
    clusterBuilder.addContactPoints(host);
    if (port != -1) {
      clusterBuilder.withPort(port);
    }

    // ask for some metadata
    logger.info("getting cluster metadata for {}.{}", keyspace, columnFamily);
    final TableMetadata tableMetadata;
    try (final Cluster cluster = clusterBuilder.build()) {
      Metadata clusterMetadata = cluster.getMetadata();
      KeyspaceMetadata keyspaceMetadata = clusterMetadata.getKeyspace('"' + keyspace + '"');
      tableMetadata = keyspaceMetadata.getTable('"' + columnFamily + '"');
      cqlSchema = tableMetadata.asCQLQuery();
      partitionerClass = clusterMetadata.getPartitioner();
      Class.forName(partitionerClass);
      numClusterNodes = clusterMetadata.getAllHosts().size();
      columns = tableMetadata.getColumns();
    } catch (ClassNotFoundException cnfe) {
      throw new CrunchRuntimeException("No such partitioner: " + partitionerClass, cnfe);
    } catch (NullPointerException npe) {
      String msg = String.format("No such keyspace/table: %s/%s", keyspace, columnFamily);
      throw new CrunchRuntimeException(msg, npe);
    }

    // map the partition key columns
    final List<ColumnMetadata> partitionKeyColumns = tableMetadata.getPartitionKey();
    partitionKeyIndexes = new int[partitionKeyColumns.size()];
    for (int i = 0; i < partitionKeyColumns.size(); i++) {
      final String keyColName = partitionKeyColumns.get(i).getName();
      int j;
      for (j = 0; j < columns.size(); j++) {
        if (columns.get(j).getName().equals(keyColName)) {
          partitionKeyIndexes[i] = j;
          logger.info("partition key column {} index {}", keyColName, j);
          break;
        }
      }
      if (j == columns.size()) {
        throw new CrunchRuntimeException("no matching column for key " + keyColName);
      }
    }
  }
開發者ID:spotify，項目名稱:hdfs2cass，代碼行數:50，代碼來源:CassandraClusterInfo.java


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