org.apache.jackrabbit.oak.query

Class ResultImpl

java.lang.Object

org.apache.jackrabbit.oak.query.ResultImpl

All Implemented Interfaces:

Result

public class ResultImpl
extends Object
implements Result

A query result.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.jackrabbit.oak.api.Result

Result.SizePrecision

Field Summary

Fields

Modifier and Type	Field and Description
protected Query	query

Method Summary

Modifier and Type	Method and Description
String[]	getColumnNames() Get the list of column names.
String[]	getColumnSelectorNames() Get the distinct selector names of all columns.
Iterable<? extends ResultRow>	getRows() Get the rows.
String[]	getSelectorNames() Get the list of selector names.
long	getSize() Get the number of rows, if known.
long	getSize(Result.SizePrecision precision, long max) Get the number of rows, if known.

Methods inherited from class java.lang.Object

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

Field Detail

query

protected final Query query

Method Detail

getColumnNames

public String[] getColumnNames()

Description copied from interface: Result

Get the list of column names.

Specified by:

getColumnNames in interface Result

Returns:

the column names

getColumnSelectorNames

public String[] getColumnSelectorNames()

Description copied from interface: Result

Get the distinct selector names of all columns. The list is ordered as selectors appear in the result. For columns without selector, an empty entry (null) is used.

Specified by:

getColumnSelectorNames in interface Result

Returns:

the distinct selector names

getSelectorNames

public String[] getSelectorNames()

Description copied from interface: Result

Get the list of selector names.

Specified by:

getSelectorNames in interface Result

Returns:

the selector names

getRows

public Iterable<? extends ResultRow> getRows()

Description copied from interface: Result

Get the rows.

Specified by:

getRows in interface Result

Returns:

the rows

getSize

public long getSize()

Description copied from interface: Result

Get the number of rows, if known. If the size is not known, -1 is returned.

Specified by:

getSize in interface Result

Returns:

the size or -1 if unknown

getSize

public long getSize(Result.SizePrecision precision,
                    long max)

Description copied from interface: Result

Get the number of rows, if known. If the size is not known, -1 is returned.

Specified by:

getSize in interface Result

Parameters:

precision - the required precision

max - the maximum number that should be returned (Long.MAX_VALUE for unlimited). For EXACT, the cost of the operation is at most O(max). For approximations, the cost of the operation should be at most O(log max).

Returns:

the (approximate) size. If an implementation does know the exact value, it returns it (even if the value is higher than max). If the implementation does not know the value, and the child node count is higher than max, it returns Long.MAX_VALUE.