com.gpudb.protocol

Class FilterByRadiusRequest

java.lang.Object

com.gpudb.protocol.FilterByRadiusRequest

All Implemented Interfaces:

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

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

A set of parameters for GPUdb.filterByRadius(FilterByRadiusRequest).

Calculates which objects from a table lie within a circle with the given radius and center point (i.e. circular NAI). The operation is synchronous meaning that GPUdb will not return a response until all the objects are fully available. The response payload provides the count of the resulting set. A new resultant set (view) which satisfies the input circular NAI restriction specification is also created if a viewName is passed in as part of the request.

For track data, all track points that lie within the circle plus one point on either side of the circle (if the track goes beyond the circle) will be included in the result. For shapes, e.g. polygons, all polygons that intersect the circle will be included (even if none of the points of the polygon fall within the circle).

Constructor Summary

Constructors

Constructor and Description
FilterByRadiusRequest() Constructs a FilterByRadiusRequest object with default parameters.
FilterByRadiusRequest(String tableName, String viewName, String xColumnName, double xCenter, String yColumnName, double yCenter, double radius, Map<String,String> options) Constructs a FilterByRadiusRequest 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.
Map<String,String>	getOptions()
double	getRadius()
org.apache.avro.Schema	getSchema() This method supports the Avro framework and is not intended to be called directly by the user.
String	getTableName()
String	getViewName()
double	getXCenter()
String	getXColumnName()
double	getYCenter()
String	getYColumnName()
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.
FilterByRadiusRequest	setOptions(Map<String,String> options)
FilterByRadiusRequest	setRadius(double radius)
FilterByRadiusRequest	setTableName(String tableName)
FilterByRadiusRequest	setViewName(String viewName)
FilterByRadiusRequest	setXCenter(double xCenter)
FilterByRadiusRequest	setXColumnName(String xColumnName)
FilterByRadiusRequest	setYCenter(double yCenter)
FilterByRadiusRequest	setYColumnName(String yColumnName)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

FilterByRadiusRequest

public FilterByRadiusRequest()

Constructs a FilterByRadiusRequest object with default parameters.

FilterByRadiusRequest

public FilterByRadiusRequest(String tableName,
                             String viewName,
                             String xColumnName,
                             double xCenter,
                             String yColumnName,
                             double yCenter,
                             double radius,
                             Map<String,String> options)

Constructs a FilterByRadiusRequest object with the specified parameters.

Parameters:

tableName - Name of the table on which the filter by radius operation will be performed. Must be an existing table in GPUdb.

viewName - If provided, then this will be the name of the view containing the results. Must not be an already existing collection, table or view.

xColumnName - Name of the column to be used for the x-coordinate (the longitude) of the center.

xCenter - Value of the longitude of the center. Must be within [-180.0, 180.0]. The minimum allowed value is -180. The maximum allowed value is 180.

yColumnName - Name of the column to be used for the y-coordinate-the latitude-of the center.

yCenter - Value of the latitude of the center. Must be within [-90.0, 90.0]. The minimum allowed value is -90. The maximum allowed value is 90.

radius - The radius of the circle within which the search will be performed. Must be a non-zero positive value. It is in meters; so, for example, a value of '42000' means 42 km. The minimum allowed value is 0. The maximum allowed value is MAX_INT.

options - Optional parameters.

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 filter by radius operation will be performed. Must be an existing table in GPUdb.

setTableName

public FilterByRadiusRequest setTableName(String tableName)

Parameters:

tableName - Name of the table on which the filter by radius operation will be performed. Must be an existing table in GPUdb.

Returns:

this to mimic the builder pattern.

getViewName

public String getViewName()

Returns:

If provided, then this will be the name of the view containing the results. Must not be an already existing collection, table or view.

setViewName

public FilterByRadiusRequest setViewName(String viewName)

Parameters:

viewName - If provided, then this will be the name of the view containing the results. Must not be an already existing collection, table or view.

Returns:

this to mimic the builder pattern.

getXColumnName

public String getXColumnName()

Returns:

Name of the column to be used for the x-coordinate (the longitude) of the center.

setXColumnName

public FilterByRadiusRequest setXColumnName(String xColumnName)

Parameters:

xColumnName - Name of the column to be used for the x-coordinate (the longitude) of the center.

Returns:

this to mimic the builder pattern.

getXCenter

public double getXCenter()

Returns:

Value of the longitude of the center. Must be within [-180.0, 180.0]. The minimum allowed value is -180. The maximum allowed value is 180.

setXCenter

public FilterByRadiusRequest setXCenter(double xCenter)

Parameters:

xCenter - Value of the longitude of the center. Must be within [-180.0, 180.0]. The minimum allowed value is -180. The maximum allowed value is 180.

Returns:

this to mimic the builder pattern.

getYColumnName

public String getYColumnName()

Returns:

Name of the column to be used for the y-coordinate-the latitude-of the center.

setYColumnName

public FilterByRadiusRequest setYColumnName(String yColumnName)

Parameters:

yColumnName - Name of the column to be used for the y-coordinate-the latitude-of the center.

Returns:

this to mimic the builder pattern.

getYCenter

public double getYCenter()

Returns:

Value of the latitude of the center. Must be within [-90.0, 90.0]. The minimum allowed value is -90. The maximum allowed value is 90.

setYCenter

public FilterByRadiusRequest setYCenter(double yCenter)

Parameters:

yCenter - Value of the latitude of the center. Must be within [-90.0, 90.0]. The minimum allowed value is -90. The maximum allowed value is 90.

Returns:

this to mimic the builder pattern.

getRadius

public double getRadius()

Returns:

The radius of the circle within which the search will be performed. Must be a non-zero positive value. It is in meters; so, for example, a value of '42000' means 42 km. The minimum allowed value is 0. The maximum allowed value is MAX_INT.

setRadius

public FilterByRadiusRequest setRadius(double radius)

Parameters:

radius - The radius of the circle within which the search will be performed. Must be a non-zero positive value. It is in meters; so, for example, a value of '42000' means 42 km. The minimum allowed value is 0. The maximum allowed value is MAX_INT.

Returns:

this to mimic the builder pattern.

getOptions

public Map<String,String> getOptions()

Returns:

Optional parameters.

setOptions

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

Parameters:

options - Optional parameters.

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