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See:
Description
Interface Summary | |
---|---|
Dataset<E> | A logical representation of a set of data entities. |
DatasetReader<E> | A stream-oriented dataset reader. |
DatasetRepository |
A logical repository (storage system) of Dataset s. |
DatasetWriter<E> | A stream-oriented dataset writer. |
RandomAccessDataset<E> |
A Dataset that supports random access operations on entities. |
RandomAccessDatasetRepository |
A logical repository (storage system) of RandomAccessDataset s. |
RefinableView<E> | A RefinableView specifies a subset of a Dataset by one or
more logical constraints. |
View<E> | A View is a subset of a Dataset . |
Class Summary | |
---|---|
ColumnMapping | A descriptor for an entity's column mappings, which defines how an entity maps to a columnar store. |
ColumnMapping.Builder | A fluent builder to aid in constructing a ColumnMapping . |
DatasetDescriptor |
The structural definition of a Dataset . |
DatasetDescriptor.Builder | A fluent builder to aid in the construction of DatasetDescriptor s. |
DatasetRepositories | Convenience methods for working with DatasetRepository instances. |
Datasets | Convenience methods for working with Dataset instances. |
FieldMapping | Represents how to store a Schema field. |
Format |
The data format used for encoding the data in a Dataset when stored
in a DatasetRepository . |
Formats |
Contains constant definitions for the standard Format instances
supported by the library. |
Key |
A key for retrieving entities from a RandomAccessDataset . |
Key.Builder | A fluent builder to aid in the construction of Key objects. |
PartitionKey |
A key for retrieving partitions from a Dataset . |
PartitionStrategy | The strategy used to determine how a dataset is partitioned. |
PartitionStrategy.Builder | A fluent builder to aid in the construction of PartitionStrategy s. |
Enum Summary | |
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FieldMapping.MappingType | The supported Mapping Types, which control how an entity field maps to columns in an HBase table. |
Exception Summary | |
---|---|
ConcurrentSchemaModificationException | Exception thrown when a schema modification collides with another client trying to modify the schema of the same dataset. |
DatasetException | Exception thrown for dataset-related failures. |
DatasetExistsException | Exception thrown when trying to create a dataset that already exists. |
DatasetIOException | Exception thrown for dataset IO-related failures. |
DatasetNotFoundException | Exception thrown to indicate that a dataset was not found. |
DatasetReaderException | Exception thrown for dataset reader-related failures. |
DatasetRepositoryException | Exception thrown for dataset repository-related failures. |
DatasetWriterException | Exception thrown for dataset writer-related failures. |
IncompatibleSchemaException | Exception thrown when a schema update is not compatible with the previous schema (or schemas) or with existing datasets (if shared storage is used, for example). |
SchemaNotFoundException | Exception thrown to indicate that there is a problem finding a particular version of a schema. |
SerializationException | Exception thrown when an object cannot be serialized to, or deserialized from, its binary representation. |
UnknownFormatException | Exception thrown when a Dataset is in an unknown format. |
ValidationException | Exception thrown to indicate that there was a problem parsing or validating a schema, partition strategy, or column mapping. |
Provides interfaces and classes for reading and writing datasets.
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