Module datarush.library

Package com.pervasive.datarush.types

Provides classes and interfaces for the description of token data types.

All data within DataRush is strongly typed. This typing is applied to tokens and propagates through to all constructs dealing with tokens, such as ports. In some cases, type checking is enforced through Java's own type checking, preventing compilation of invalid code. However, in other cases, it may not be possible to perform these checks until composition or execution of the graph, as the data types of flows may not be known statically (for example, deriving from the schema of a file whose name is supplied as a runtime parameter). The token data type descriptors implementing TokenType are used in this dynamic type checking.

Interface Summary

Interface	Description
Field	An element of a RecordTokenType schema.
FieldRemapping	A transformation on a record type.
GenericTokenType	A description of the generic data type, the root of the type hierarchy.
ObjectTyped<O>	Identifies a class which is associated with Java object data.
RecordTokenType	A description of a record data type.
RecordTyped	Identifies a class which is associated with record data.
ScalarTokenType	A description of a scalar data type.
ScalarTyped	Identifies a class which is associated with scalar data.
TokenType	A description of the properties of a token data type.
TokenTyped	Identifies a class which handles data tokens.
TokenTypeDispatcher	An object performing (potentially) different processing based on token type.

Class Summary

Class	Description
EnumeratedValues	Deprecated.
EnumTokenType	Deprecated. Replace with string+domain
FieldDomain	Contains meta-information about the allowed values, lower, and upper bounds for a given field.
FieldRemappings
FieldRemappings.Directive	A mapping directive to be applied to a source field.
ObjectTokenType<O>	A description of a scalar data type for a Java class.
RecordTokenTypeBuilder	An object for dynamically constructing a record type.
TokenTypeConstant	A collection of constant descriptors and utilities for the supported token types.
TokenValueExtractor
TypeDispatchedConstructor<T>	A base class for type-driven object factories.
TypeUtil	Various utilities for manipulating token types.

Exception Summary

Exception	Description
FieldTypeNotSupportedException	Unchecked exception thrown to indicate a field in a record schema is of an invalid type for a given context.
FieldTypesNotComparableException	Unchecked exception thrown when an attempt is made to compare two fields of incompatible types in a record schema.
TypeNotSupportedException	Unchecked exception thrown to indicate a type is not valid in a given context.
TypesNotComparableException	Unchecked exception thrown when an attempt is made to compare two typed objects of incompatible types.