com.gpudb.protocol

Class AggregateMinMaxRequest

java.lang.Object

com.gpudb.protocol.AggregateMinMaxRequest

All Implemented Interfaces:

org.apache.avro.generic.GenericContainer, org.apache.avro.generic.IndexedRecord

public class AggregateMinMaxRequest
extends Object
implements org.apache.avro.generic.IndexedRecord

A set of parameters for GPUdb.aggregateMinMax(AggregateMinMaxRequest).

Calculates and returns the minimum and maximum values of a particular column in a table.

Constructor Summary

Constructors

Constructor and Description
AggregateMinMaxRequest() Constructs an AggregateMinMaxRequest object with default parameters.
AggregateMinMaxRequest(String tableName, String columnName, Map<String,String> options) Constructs an AggregateMinMaxRequest object with the specified parameters.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
Object	get(int index) This method supports the Avro framework and is not intended to be called directly by the user.
static org.apache.avro.Schema	getClassSchema() This method supports the Avro framework and is not intended to be called directly by the user.
String	getColumnName()
Map<String,String>	getOptions()
org.apache.avro.Schema	getSchema() This method supports the Avro framework and is not intended to be called directly by the user.
String	getTableName()
int	hashCode()
void	put(int index, Object value) This method supports the Avro framework and is not intended to be called directly by the user.
AggregateMinMaxRequest	setColumnName(String columnName)
AggregateMinMaxRequest	setOptions(Map<String,String> options)
AggregateMinMaxRequest	setTableName(String tableName)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AggregateMinMaxRequest

public AggregateMinMaxRequest()

Constructs an AggregateMinMaxRequest object with default parameters.

AggregateMinMaxRequest

public AggregateMinMaxRequest(String tableName,
                              String columnName,
                              Map<String,String> options)

Constructs an AggregateMinMaxRequest object with the specified parameters.

Parameters:

tableName - Name of the table on which the operation will be performed. Must be an existing table.

columnName - Name of a column or an expression of one or more column on which the min-max will be calculated.

options - Optional parameters. The default value is an empty Map.

Method Detail

getClassSchema

public static org.apache.avro.Schema getClassSchema()

This method supports the Avro framework and is not intended to be called directly by the user.

Returns:

the schema for the class.

getTableName

public String getTableName()

Returns:

Name of the table on which the operation will be performed. Must be an existing table.

setTableName

public AggregateMinMaxRequest setTableName(String tableName)

Parameters:

tableName - Name of the table on which the operation will be performed. Must be an existing table.

Returns:

this to mimic the builder pattern.

getColumnName

public String getColumnName()

Returns:

Name of a column or an expression of one or more column on which the min-max will be calculated.

setColumnName

public AggregateMinMaxRequest setColumnName(String columnName)

Parameters:

columnName - Name of a column or an expression of one or more column on which the min-max will be calculated.

Returns:

this to mimic the builder pattern.

getOptions

public Map<String,String> getOptions()

Returns:

Optional parameters. The default value is an empty Map.

setOptions

public AggregateMinMaxRequest setOptions(Map<String,String> options)

Parameters:

options - Optional parameters. The default value is an empty Map.

Returns:

this to mimic the builder pattern.

getSchema

public org.apache.avro.Schema getSchema()

This method supports the Avro framework and is not intended to be called directly by the user.

Specified by:

getSchema in interface org.apache.avro.generic.GenericContainer

Returns:

the schema object describing this class.

get

public Object get(int index)

This method supports the Avro framework and is not intended to be called directly by the user.

Specified by:

get in interface org.apache.avro.generic.IndexedRecord

Parameters:

index - the position of the field to get

Returns:

value of the field with the given index.

Throws:

IndexOutOfBoundsException

put

public void put(int index,
                Object value)

This method supports the Avro framework and is not intended to be called directly by the user.

Specified by:

put in interface org.apache.avro.generic.IndexedRecord

Parameters:

index - the position of the field to set

value - the value to set

Throws:

IndexOutOfBoundsException

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object