public abstract class ContextDerivedData extends Object
Modifier and Type | Class and Description |
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static interface |
ContextDerivedData.DerivedCalculator
A way of actually doing the calculations.
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static class |
ContextDerivedData.DerivedColumn
A column of data derived from the existing data.
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static class |
ContextDerivedData.DerivedOperation
A way of calculating the column values.
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Constructor and Description |
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ContextDerivedData() |
Modifier and Type | Method and Description |
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abstract Column |
columnFor(ContextDerivedData.DerivedColumn derivedColumn,
IResult result,
ContextProvider provider)
Get a column ready to use, based on the derived column
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abstract ContextDerivedData.DerivedColumn[] |
getDerivedColumns()
Get all the derived columns for the current context (page)
Do not modify the returned array.
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abstract String |
labelFor(ContextDerivedData.DerivedColumn derivedColumn,
ContextProvider provider)
Get the label for the extra column
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ContextDerivedData.DerivedColumn |
lookup(ContextDerivedData.DerivedOperation operation)
Find the appropriate column for the requested operation
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public abstract ContextDerivedData.DerivedColumn[] getDerivedColumns()
public abstract String labelFor(ContextDerivedData.DerivedColumn derivedColumn, ContextProvider provider)
derivedColumn
- the extra columnprovider
- how the column was generatedpublic abstract Column columnFor(ContextDerivedData.DerivedColumn derivedColumn, IResult result, ContextProvider provider)
derivedColumn
- the extra columnresult
- the original result to be enhancedprovider
- the provider of all the datapublic final ContextDerivedData.DerivedColumn lookup(ContextDerivedData.DerivedOperation operation)
operation
- the operation to generate the column values