Package io.deephaven.api.updateby.spec

Interface UpdateBySpec

All Known Implementing Classes:

CumMinMaxSpec, CumProdSpec, CumSumSpec, DeltaSpec, EmaSpec, EmMinMaxSpec, EmsSpec, EmStdSpec, FillBySpec, RollingAvgSpec, RollingCountSpec, RollingFormulaSpec, RollingGroupSpec, RollingMinMaxSpec, RollingOpSpec, RollingProductSpec, RollingStdSpec, RollingSumSpec, RollingWAvgSpec, UpdateBySpecBase

public interface UpdateBySpec

A Specification for an updateBy operation. Implementations of this are essentially tagging classes for the underlying visitor classes to walk to produce a final operation.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	UpdateBySpec.Visitor<T>

Method Summary

Modifier and Type	Method	Description
boolean	applicableTo(Class<?> inputType)	Determine if this spec can be applied to the specified type
ColumnUpdateOperation	clause(Pair pair)	Build a ColumnUpdateOperation for this UpdateBySpec.
ColumnUpdateOperation	clause(Pair... pairs)	Build a ColumnUpdateOperation clause for this UpdateBySpec.
ColumnUpdateOperation	clause(String pair)	Build a ColumnUpdateOperation for this UpdateBySpec.
ColumnUpdateOperation	clause(String... pairs)	Build a ColumnUpdateOperation clause for this UpdateBySpec.
ColumnUpdateOperation	clause(Collection<? extends Pair> pairs)	Build a ColumnUpdateOperation clause for this UpdateBySpec.
<T> T	walk(UpdateBySpec.Visitor<T> visitor)

Method Details

applicableTo

boolean applicableTo(Class<?> inputType)

Determine if this spec can be applied to the specified type

Parameters:

inputType - the specified input type

Returns:

true if this spec can be applied to the specified input type

clause

ColumnUpdateOperation clause(String pair)

Build a ColumnUpdateOperation for this UpdateBySpec.

Parameters:

pair - The input/output column name pair

Returns:

The clause

clause

ColumnUpdateOperation clause(Pair pair)

Build a ColumnUpdateOperation for this UpdateBySpec.

Parameters:

pair - The input/output column name pair

Returns:

The clause

clause

ColumnUpdateOperation clause(String... pairs)

Build a ColumnUpdateOperation clause for this UpdateBySpec.

Parameters:

pairs - The input/output column name pairs

Returns:

The aggregation

clause

ColumnUpdateOperation clause(Pair... pairs)

Build a ColumnUpdateOperation clause for this UpdateBySpec.

Parameters:

pairs - The input/output column name pairs

Returns:

The aggregation

clause

ColumnUpdateOperation clause(Collection<? extends Pair> pairs)

Build a ColumnUpdateOperation clause for this UpdateBySpec.

Parameters:

pairs - The input/output column name pairs

Returns:

The aggregation

walk

<T> T walk(UpdateBySpec.Visitor<T> visitor)