Package uk.ac.starlink.ttools.jel

Interface Summary

Interface	Description
Constant<T>	Defines a typed value.
JELQuantity	Aggregates a compiled expression and a metadata object.

Class Summary

Class	Description
ColumnIdentifier	Can identify columns of a table using string identifiers.
DummyJELRowReader	JELRowReader which can't actually read any rows.
FixedConstant<T>	Constant implementation which always has the same value.
JELArrayFunction<I,O>	Provides an array->array function in which input elements are mapped to output elements by use of a given JEL expression.
JELArrayFunction.XResolver	This public class is an implementation detail, not intended for external use.
JELFunction	Provides a double precision function of one double precision variable which can be evaluated using JEL.
JELFunction.XResolver	This public class is an implementation detail, not intended for external use.
JELRowReader	An object which is able to read cell values by column name or number.
JELTable	Wrapper table which is constructed entirely of columns defined by JEL expressions based on the base table.
JELUtils	This class provides some utility methods for use with the JEL expression compiler.
RandomJELEvaluator	Random-access evaluator for JEL expressions evaluated against tables.
RandomJELRowReader	Provides JELRowReader functionality for a random access table.
ResultSetJELRowReader	JELRowReader for accessing JDBC ResultSet objects.
SequentialJELRowReader	Implements JELRowReader for sequential access to a table.
StarTableJELRowReader	JELRowReader subclass for access to StarTables.
TablelessJELRowReader	JELRowReader implementation which has no columns.

Exception Summary

Exception	Description
CustomCompilationException	Specialised subclass of JEL's CompilationException.

Annotation Types Summary

Annotation Type	Description
StateDependent	Indicates that a public static method is to be evalated by JEL at runtime not compile time, even if its arguments can be determined at compile time.