Examples of org.apache.cassandra.thrift.ColumnPath

org.apache.cassandra.thrift.ColumnPath
The ColumnPath is the path to a single column in Cassandra. It might make sense to think of ColumnPath and ColumnParent in terms of a directory structure. ColumnPath is used to looking up a single column. @param column_family. The name of the CF of the column being looked up. @param super_column. The super column name. @param column. The column name.

                                             final String superColumnName,
                                             CassandraTemplate template,
                                             String keyspaceName) {
        return template.read(keyspaceName, new KeyspaceCallback<SuperColumn>() {
            public SuperColumn execute(KeyspaceService keyspace) {
                ColumnPath columnPath = createColumnPath(columnFamilyName, superColumnName, null);
                try {
                    return keyspace.getSuperColumn(rowKey, columnPath);
                } catch (HNotFoundException e) {
                    return null;
                }

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                                               String columnName) {
        return createColumnPath(columnFamily, superColumnName == null ? null : bytes(superColumnName), columnName);
    }


    private static ColumnPath createColumnPath(String columnFamily, ByteBuffer superColumnName, String columnName) {
        ColumnPath columnPath = new ColumnPath(columnFamily);
        if (superColumnName != null) {
            columnPath.setSuper_column(superColumnName);
        }
        if (columnName != null) {
            columnPath.setColumn(bytes(columnName));
        }
        return columnPath;
    }

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                                 final String columnFamilyName,
                                 final String rowKey,
                                 CassandraTemplate template) {
        template.write(keyspaceName, new KeyspaceCallback<Void>() {
            public Void execute(KeyspaceService keyspace) {
                ColumnPath columnPath = createColumnPath(columnFamilyName, (String) null, null);
                keyspace.remove(rowKey, columnPath);
                return null;
            }
        });
    }

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                                    final String superColumnName,
                                    final String columnName,
                                    CassandraTemplate template) {
        template.write(keyspaceName, new KeyspaceCallback<Void>() {
            public Void execute(KeyspaceService keyspace) {
                ColumnPath columnPath = createColumnPath(columnFamilyName, superColumnName, columnName);
                keyspace.remove(rowKey, columnPath);
                return null;
            }
        });
    }

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                public Void execute(KeyspaceService keyspace) {
                    String colName = null;
                    if (columnNames != null) {
                        colName = columnNames.get(0);
                    }
                    ColumnPath columnPath = createColumnPath(columnFamilyName, superColumnName, colName);
                    keyspace.remove(rowKey, columnPath);
                    return null;
                }
            });
        } else {

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                                     final String value,
                                     final CassandraTemplate template,
                                     String keyspaceName) {
        template.write(keyspaceName, new KeyspaceCallback<Void>() {
            public Void execute(KeyspaceService keyspace) {
                ColumnPath columnPath = createColumnPath(columnFamilyName, superColumnName, propertyName);
                keyspace.insert(rowKey, columnPath, bytes(value));
                return null;
            }
        });
    }

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                                     final CassandraTemplate template,
                                     String keyspaceName,
                                     ConsistencyLevelPolicy consistencyLevel) {
        template.execute(keyspaceName, new KeyspaceCallback<Void>() {
            public Void execute(KeyspaceService keyspace) {
                ColumnPath columnPath = createColumnPath(columnFamilyName, superColumnName, propertyName);
                keyspace.insert(rowKey, columnPath, bytes(value));
                return null;
            }
        }, consistencyLevel, false);
    }

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                                     String keyspaceName,
                                     final int ttlInMinutes) {
        template.write(keyspaceName, new KeyspaceCallback<Void>() {
            public Void execute(KeyspaceService keyspace) {
              int ttlInSeconds = (int) TimeUnit.SECONDS.convert(ttlInMinutes, TimeUnit.MINUTES);
                ColumnPath columnPath = createColumnPath(columnFamilyName, superColumnName, propertyName);
                ColumnParent columnParent = new ColumnParent(columnPath.getColumn_family());
                if (columnPath.isSetSuper_column()) {
                  columnParent.setSuper_column(columnPath.getSuper_column());
                }
                
                Column column = new Column(ByteBuffer.wrap(columnPath.getColumn()));
                column.setTtl(ttlInSeconds);
                ByteBuffer key = StringSerializer.get().toByteBuffer(rowKey);
                keyspace.insert(key, columnParent, column);


                return null;

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                                               final String columnName,
                                               CassandraTemplate template,
                                               String keyspaceName) {
        return template.read(keyspaceName, new KeyspaceCallback<Object>() {
            public Object execute(KeyspaceService keyspace) {
                ColumnPath columnPath = createColumnPath(columnFamilyName, superColumnName, columnName);
                try {
                    Column column = keyspace.getColumn(rowKey, columnPath);
                    // allow for possibility that this could return null instead of throwing not found exception
                    if (column == null) {
                        return null;

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                                                                      final ByteBuffer superColumnName,
                                                                      CassandraTemplate template,
                                                                      String keyspaceName) {
        return template.read(keyspaceName, new KeyspaceCallback<Map<ByteBuffer, SuperColumn>>() {
            public Map<ByteBuffer, SuperColumn> execute(KeyspaceService keyspace) {
                ColumnPath columnPath = createColumnPath(columnFamilyName, superColumnName, null);
                return keyspace.multigetSuperColumn(keys, columnPath);
            }
        });
    }

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