Package app.babylon.table.column

Class ColumnObject.Renamed<T>

java.lang.Object

app.babylon.table.column.ColumnObject.Renamed<T>

All Implemented Interfaces:

Column, ColumnObject<T>

Enclosing interface:

ColumnObject<T>

public static final class ColumnObject.Renamed<T>
extends Object
implements ColumnObject<T>

Nested Class Summary

Nested classes/interfaces inherited from interface app.babylon.table.column.Column

Column.Operator, Column.Type

Nested classes/interfaces inherited from interface app.babylon.table.column.ColumnObject

ColumnObject.Builder<T>, ColumnObject.Mode, ColumnObject.Renamed<T>

Method Summary

Modifier and Type	Method	Description
int	compare(int i, int j)	Compares two row values from this column using the column's ordering semantics.
T	get(int i)	Returns the value at the supplied row.
ColumnName	getName()	Returns the logical column name.
Column.Type	getType()	Returns the declared type of values stored in this column.
boolean	isAllSet()	Indicates whether every row in the column contains a value.
boolean	isConstant()	Indicates whether the column represents the same value for every row.Unset values are part of the value pattern, so an all-unset column is constant, while a mix of unset and set values is not constant unless the implementation explicitly defines that pattern as constant.
boolean	isNoneSet()	Indicates whether no row in the column contains a value.
boolean	isSet(int i)	Indicates whether the value at the supplied row is present.
ColumnObject<T>	selectRow(int i)	Returns a single-row object column containing the value from the supplied row.
int	size()	Returns the number of rows in the column.
String	toString(int i)	Formats the value at the supplied row for display.
ColumnObject<T>	view(ViewIndex rowIndex)	Returns a projected view of this column using the supplied row mapping.

Methods inherited from class java.lang.Object

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

Methods inherited from interface app.babylon.table.column.Column

isEmpty, predicate

Methods inherited from interface app.babylon.table.column.ColumnObject

appendTo, copy, copy, first, getAll, getUniques, last, max, min, predicate, predicate, select, toString, transform

Method Details

getName

public ColumnName getName()

Description copied from interface: Column

Returns the logical column name.

Specified by:

getName in interface Column

Returns:

the column name

getType

public Column.Type getType()

Description copied from interface: Column

Returns the declared type of values stored in this column.

Specified by:

getType in interface Column

Returns:

the column value type

size

public int size()

Description copied from interface: Column

Returns the number of rows in the column.

Specified by:

size in interface Column

Returns:

the row count

get

public T get(int i)

Description copied from interface: ColumnObject

Returns the value at the supplied row.

Specified by:

get in interface ColumnObject<T>

Parameters:

i - the zero-based row index

Returns:

the row value, or null when unset

toString

public String toString(int i)

Description copied from interface: Column

Formats the value at the supplied row for display.

Specified by:

toString in interface Column

Parameters:

i - the zero-based row index

Returns:

the formatted row value, or an empty string when unset

isSet

public boolean isSet(int i)

Description copied from interface: Column

Indicates whether the value at the supplied row is present.

Specified by:

isSet in interface Column

Specified by:

isSet in interface ColumnObject<T>

Parameters:

i - the zero-based row index

Returns:

true when the row contains a value

isConstant

public boolean isConstant()

Description copied from interface: Column

Indicates whether the column represents the same value for every row.Unset values are part of the value pattern, so an all-unset column is constant, while a mix of unset and set values is not constant unless the implementation explicitly defines that pattern as constant.

Specified by:

isConstant in interface Column

Returns:

true when the column is constant

isAllSet

public boolean isAllSet()

Description copied from interface: Column

Indicates whether every row in the column contains a value.

Specified by:

isAllSet in interface Column

Returns:

true when all rows are set

isNoneSet

public boolean isNoneSet()

Description copied from interface: Column

Indicates whether no row in the column contains a value.

Specified by:

isNoneSet in interface Column

Returns:

true when every row is unset

compare

public int compare(int i,
 int j)

Description copied from interface: Column

Compares two row values from this column using the column's ordering semantics.

Specified by:

compare in interface Column

Parameters:

i - the first row index

j - the second row index

Returns:

a negative number, zero, or a positive number as the first row is less than, equal to, or greater than the second

view

public ColumnObject<T> view(ViewIndex rowIndex)

Description copied from interface: Column

Returns a projected view of this column using the supplied row mapping.

Specified by:

view in interface Column

Specified by:

view in interface ColumnObject<T>

Parameters:

rowIndex - the row mapping to apply

Returns:

a column view over the selected rows

selectRow

public ColumnObject<T> selectRow(int i)

Description copied from interface: ColumnObject

Returns a single-row object column containing the value from the supplied row.

Specified by:

selectRow in interface Column

Specified by:

selectRow in interface ColumnObject<T>

Parameters:

i - the row to extract

Returns:

a single-row object column with the same column name