Module datarush.library

Package com.pervasive.datarush.schema

Provides an object model for capturing schema information used primarily by the textfile package.

Please note that this package is subject to revision. You should not depend upon any of its contents remaining stable.

Interface Summary

Interface	Description
FixedSizeTextType	An TextDataType with a fixed-size text representation.
RecordDiscriminator	A factory for creating RecordIdentifier objects.
RecordIdentifier	A discriminator for identifying text record types in multi-record schemas.
RecordTextSchema<T extends TextDataType>	A schema for text files containing a single record type.
TextDataType	A mapping between a scalar token type and text representations of values of that type.
TextRecordDiscoverer	A generator of text record schemas.
TextSchema	A definition of the record schema of a text file.

Class Summary

Class	Description
ExternalDataType	External data types are those DataRush interacts with in some way but does not support internally in dataflow queues (they are not PortTypes).
FixedWidthMultiRecordTextSchema	A schema for a text file containing records with different fixed-width formats.
FixedWidthTextRecord	A definition of a fixed-width record in a text file.
JsonPatternBasedDiscovery	Discovers a schema for JSON text by checking values against the discovered JSON types and various regular expressions which map to data types.
PaddedTextType	A wrapper for creating FixedSizeTextType objects from arbitrary TextDataType objects.
PatternBasedDiscovery	Discovers a schema for delimited text by checking values against a mapping of regular expressions to data types.
Rule	Defines a rule that can be used to determine if a particular record discriminator value fits the definition of a record type.
SchemaBuilder	Collection of static methods helpful in building schemas (TextRecord instances).
SchemaBuilder.SchemaField	An internal class used to transform schemas to/from JSON.
SchemaType	Defines the types of schemas supported.
StructuredSchemaReader	Parser for text file schemas written in Pervasive DataIntegrator structured schema (.schema) format.
TextConversionContext	Contextual information needed by TokenParser's and TokenFormatter's.
TextConversionDefaults	Describes behaviors used during conversion of token values to and from text.
TextField<T extends TextDataType>	The text analog of Field.
TextRecord	A definition of a variable-width record type in a text file.
TextTypes	Common external text data type definitions.
TypePattern	Describes a pattern which identifies a text data type.

Enum Summary

Enum	Description
PaddedTextType.Alignment	Field justifications for padded values.
SchemaBuilder.SchemaFieldType	Enumeration of schema field types
TextTypes.StringConversion	Enumerates the possible conversions for string-valued text types.