org.apache.lens.cube.metadata

Class Cube

java.lang.Object

org.apache.lens.cube.metadata.AbstractCubeTable

org.apache.lens.cube.metadata.AbstractBaseTable

org.apache.lens.cube.metadata.Cube

All Implemented Interfaces:

CubeInterface, Named

public class Cube
extends AbstractBaseTable
implements CubeInterface

Constructor Summary

Constructors

Constructor and Description
Cube(String name, Set<CubeMeasure> measures, Set<CubeDimAttribute> dimensions)
Cube(String name, Set<CubeMeasure> measures, Set<CubeDimAttribute> dimensions, Map<String,String> properties)
Cube(String name, Set<CubeMeasure> measures, Set<CubeDimAttribute> dimensions, Map<String,String> properties, double weight)
Cube(String name, Set<CubeMeasure> measures, Set<CubeDimAttribute> dimensions, Set<ExprColumn> expressions, Set<JoinChain> joinChains, Map<String,String> properties, double weight)
Cube(org.apache.hadoop.hive.ql.metadata.Table tbl)

Method Summary

Methods

Modifier and Type	Method and Description
void	addProperties()
void	addTimedDimension(String timedDimension) Adds the timed dimension
boolean	allFieldsQueriable() Whether all the fields of cube can be queried.
void	alterDimension(CubeDimAttribute dimension) Alters the dimension if already existing or just adds if it is new dimension
void	alterMeasure(CubeMeasure measure) Alters the measure if already existing or just adds if it is new measure.
boolean	equals(Object obj)
Set<String>	getAllFieldNames() Get all field names reachable from cube
CubeColumn	getColumnByName(String column) Get cube column given by column name.
CubeDimAttribute	getDimAttributeByName(String dimension) Get dimension attribute given by name
Set<String>	getDimAttributeNames() Get all dimension attribute names
Set<CubeDimAttribute>	getDimAttributes() Get all dimension attributes of the cube
static Set<CubeDimAttribute>	getDimensions(String name, Map<String,String> props)
CubeMeasure	getMeasureByName(String measure) Get measure by given by name
Set<String>	getMeasureNames() Get all measure names
Set<CubeMeasure>	getMeasures() Get all measures of the cube
static Set<CubeMeasure>	getMeasures(String name, Map<String,String> props)
String	getPartitionColumnOfTimeDim(String timeDimName)
CubeTableType	getTableType()
Set<String>	getTimedDimensions() Get all timed dimensions of cube
String	getTimeDimOfPartitionColumn(String partCol)
int	hashCode()
boolean	isDerivedCube() Is the cube a derived cube or base cube
void	removeDimension(String dimName) Remove the dimension with name specified
boolean	removeJoinChain(String chainName) Remove the joinchain with name specified
void	removeMeasure(String msrName) Remove the measure with name specified
void	removeTimedDimension(String timedDimension) Removes the timed dimension

Methods inherited from class org.apache.lens.cube.metadata.AbstractBaseTable

alterExpression, alterJoinChain, getChainByName, getChainMap, getExpressionByName, getExpressionNames, getExpressions, getExprMap, getJoinChainNames, getJoinChains, getStorages, removeExpression, setJoinChainProperties

Methods inherited from class org.apache.lens.cube.metadata.AbstractCubeTable

addProperties, alterWeight, getColumns, getName, getProperties, getWeight, removeProperty, toString, weight

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.lens.cube.metadata.CubeInterface

getChainByName, getExpressionByName, getExpressionNames, getExpressions, getJoinChainNames, getJoinChains

Methods inherited from interface org.apache.lens.cube.metadata.Named

getName

Constructor Detail

Cube

public Cube(String name,
    Set<CubeMeasure> measures,
    Set<CubeDimAttribute> dimensions)

Cube

public Cube(String name,
    Set<CubeMeasure> measures,
    Set<CubeDimAttribute> dimensions,
    Map<String,String> properties)

Cube

public Cube(String name,
    Set<CubeMeasure> measures,
    Set<CubeDimAttribute> dimensions,
    Map<String,String> properties,
    double weight)

Cube

public Cube(String name,
    Set<CubeMeasure> measures,
    Set<CubeDimAttribute> dimensions,
    Set<ExprColumn> expressions,
    Set<JoinChain> joinChains,
    Map<String,String> properties,
    double weight)

Cube

public Cube(org.apache.hadoop.hive.ql.metadata.Table tbl)

Method Detail

getMeasures

public Set<CubeMeasure> getMeasures()

Description copied from interface: CubeInterface

Get all measures of the cube

Specified by:

getMeasures in interface CubeInterface

Returns:

set of CubeMeasure

getDimAttributes

public Set<CubeDimAttribute> getDimAttributes()

Description copied from interface: CubeInterface

Get all dimension attributes of the cube

Specified by:

getDimAttributes in interface CubeInterface

Returns:

set CubeDimAttribute

getTimedDimensions

public Set<String> getTimedDimensions()

Description copied from interface: CubeInterface

Get all timed dimensions of cube

Specified by:

getTimedDimensions in interface CubeInterface

Returns:

Set of strings

getTableType

public CubeTableType getTableType()

Specified by:

getTableType in class AbstractCubeTable

addProperties

public void addProperties()

Overrides:

addProperties in class AbstractBaseTable

getMeasures

public static Set<CubeMeasure> getMeasures(String name,
                           Map<String,String> props)

getDimensions

public static Set<CubeDimAttribute> getDimensions(String name,
                                  Map<String,String> props)

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractBaseTable

equals

public boolean equals(Object obj)

Overrides:

equals in class AbstractBaseTable

getDimAttributeByName

public CubeDimAttribute getDimAttributeByName(String dimension)

Description copied from interface: CubeInterface

Get dimension attribute given by name

Specified by:

getDimAttributeByName in interface CubeInterface

Parameters:

dimension - dimension attribute name

Returns:

A CubeDimAttribute object

getMeasureByName

public CubeMeasure getMeasureByName(String measure)

Description copied from interface: CubeInterface

Get measure by given by name

Specified by:

getMeasureByName in interface CubeInterface

Parameters:

measure - Measure name

Returns:

A CubeMeasure object

getColumnByName

public CubeColumn getColumnByName(String column)

Description copied from interface: CubeInterface

Get cube column given by column name.

It can be a measure, dimension attribute or an expression.

Specified by:

getColumnByName in interface CubeInterface

Overrides:

getColumnByName in class AbstractBaseTable

Parameters:

column - Column name

Returns:

A CubeColumn object

alterMeasure

public void alterMeasure(CubeMeasure measure)
                  throws org.apache.hadoop.hive.ql.metadata.HiveException

Alters the measure if already existing or just adds if it is new measure.

Parameters:

measure -

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

removeJoinChain

public boolean removeJoinChain(String chainName)

Remove the joinchain with name specified

Overrides:

removeJoinChain in class AbstractBaseTable

Parameters:

chainName -

alterDimension

public void alterDimension(CubeDimAttribute dimension)
                    throws org.apache.hadoop.hive.ql.metadata.HiveException

Alters the dimension if already existing or just adds if it is new dimension

Parameters:

dimension -

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

removeDimension

public void removeDimension(String dimName)

Remove the dimension with name specified

Parameters:

dimName -

removeMeasure

public void removeMeasure(String msrName)

Remove the measure with name specified

Parameters:

msrName -

addTimedDimension

public void addTimedDimension(String timedDimension)
                       throws org.apache.hadoop.hive.ql.metadata.HiveException

Adds the timed dimension

Parameters:

timedDimension -

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

removeTimedDimension

public void removeTimedDimension(String timedDimension)
                          throws org.apache.hadoop.hive.ql.metadata.HiveException

Removes the timed dimension

Parameters:

timedDimension -

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

isDerivedCube

public boolean isDerivedCube()

Description copied from interface: CubeInterface

Is the cube a derived cube or base cube

Specified by:

isDerivedCube in interface CubeInterface

Returns:

true if cube is derived, false if it is base

getMeasureNames

public Set<String> getMeasureNames()

Description copied from interface: CubeInterface

Get all measure names

Specified by:

getMeasureNames in interface CubeInterface

Returns:

Set of strings

getDimAttributeNames

public Set<String> getDimAttributeNames()

Description copied from interface: CubeInterface

Get all dimension attribute names

Specified by:

getDimAttributeNames in interface CubeInterface

Returns:

Set of strings

allFieldsQueriable

public boolean allFieldsQueriable()

Description copied from interface: CubeInterface

Whether all the fields of cube can be queried.

If false, the fields can queried through derived cubes. Users can look at derived cube fields to know which all fields can be queried together.

If true, all the fields can be directly queried.

Specified by:

allFieldsQueriable in interface CubeInterface

Returns:

true or false

getAllFieldNames

public Set<String> getAllFieldNames()

Description copied from interface: CubeInterface

Get all field names reachable from cube

Specified by:

getAllFieldNames in interface CubeInterface

Overrides:

getAllFieldNames in class AbstractBaseTable

Returns:

Set of strings

getPartitionColumnOfTimeDim

public String getPartitionColumnOfTimeDim(String timeDimName)

getTimeDimOfPartitionColumn

public String getTimeDimOfPartitionColumn(String partCol)