Package com.illumon.iris.db.v2.select

Class DhFormulaColumn

java.lang.Object

com.illumon.iris.db.v2.select.AbstractFormulaColumn

com.illumon.iris.db.v2.select.DhFormulaColumn

All Implemented Interfaces:

FormulaColumn, SelectColumn

public class DhFormulaColumn
extends AbstractFormulaColumn

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	useKernelFormulasProperty

Fields inherited from class com.illumon.iris.db.v2.select.AbstractFormulaColumn

COLUMN_SUFFIX, columnName, columnSources, formulaString, params, returnedType, usedColumnArrays, usedColumns, userParams, usesI, usesII, usesK

Fields inherited from interface com.illumon.iris.db.v2.select.SelectColumn

ZERO_LENGTH_SELECT_COLUMN_ARRAY

Method Summary

Modifier and Type	Method	Description
boolean	alwaysEvaluate()	Should we ignore modified column sets, and always re-evaluate this column (if appropriate)?
SelectColumn	alwaysEvaluateCopy()	Create a copy of this SelectColumn that always re-evaluates (if appropriate).
SelectColumn	copy()	Create a copy of this SelectColumn.
protected FormulaFactory	createFormulaFactory()
static Class	getDbArrayType(Class declaredType)
protected FormulaKernelFactory	getFormulaKernelFactory()
com.fishlib.base.Pair<String,Map<Long,List<MatchPair>>>	getFormulaShiftColPair()	Returns a Pair object consisting of formula string and shift to column MatchPairs.
protected FormulaSourceDescriptor	getSourceDescriptor()
boolean	hasConstantValue()	returns true if the column only has single constant value for all rows.
List<String>	initDef(Map<String,com.illumon.dataobjects.ColumnDefinition> columnDefinitionMap)	Initialize any internal column definitions from the provided initial.

Methods inherited from class com.illumon.iris.db.v2.select.AbstractFormulaColumn

applyUsedVariables, disallowRefresh, getColumnArrays, getColumns, getDataView, getLazyView, getMatchPair, getName, getReturnedType, initInputs, initInputs, isRetain, makeAppropriateDbArrayWrapper, newDestInstance, toString, updateData

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.illumon.iris.db.v2.select.FormulaColumn

hasConstantArrayAccess

Methods inherited from interface com.illumon.iris.db.v2.select.SelectColumn

getConstantValueView

Field Details

useKernelFormulasProperty

public static boolean useKernelFormulasProperty

Method Details

getDbArrayType

public static Class getDbArrayType(Class declaredType)

initDef

public List<String> initDef(Map<String,com.illumon.dataobjects.ColumnDefinition> columnDefinitionMap)

Description copied from interface: SelectColumn

Initialize any internal column definitions from the provided initial.

Parameters:

columnDefinitionMap - the starting set of column definitions

Returns:

a list of columns on which the result of this is dependent

getSourceDescriptor

protected FormulaSourceDescriptor getSourceDescriptor()

Specified by:

getSourceDescriptor in class AbstractFormulaColumn

getFormulaKernelFactory

protected FormulaKernelFactory getFormulaKernelFactory()

Specified by:

getFormulaKernelFactory in class AbstractFormulaColumn

copy

public SelectColumn copy()

Description copied from interface: SelectColumn

Create a copy of this SelectColumn.

Returns:

an independent copy of this SelectColumn.

alwaysEvaluateCopy

public SelectColumn alwaysEvaluateCopy()

Description copied from interface: SelectColumn

Create a copy of this SelectColumn that always re-evaluates (if appropriate).

alwaysEvaluate

public boolean alwaysEvaluate()

Description copied from interface: SelectColumn

Should we ignore modified column sets, and always re-evaluate this column (if appropriate)?

hasConstantValue

public boolean hasConstantValue()

Description copied from interface: FormulaColumn

returns true if the column only has single constant value for all rows.

Returns:

true if column rows only have single constant value

getFormulaShiftColPair

public com.fishlib.base.Pair<String,Map<Long,List<MatchPair>>> getFormulaShiftColPair()

Description copied from interface: FormulaColumn

Returns a Pair object consisting of formula string and shift to column MatchPairs. If the column formula or expression has Array Access that conforms to "i +/- <constant>" or "ii +/- <constant>". If there is a parsing error for the expression null is returned.

Returns:

Pair of final formula string and shift to column MatchPairs.

createFormulaFactory

protected FormulaFactory createFormulaFactory()

Overrides:

createFormulaFactory in class AbstractFormulaColumn