org.ldp4j.application.ext

Interface Query

All Superinterfaces:

Serializable

public interface Query
extends Serializable

A collection of Parameters, where is each parameter is indexed by its name.

Method Summary

Methods

Modifier and Type	Method and Description
Parameter	getParameter(String paramName) Returns the parameter with the specified name, or null if this query contains no parameter with that name.
boolean	hasParameter(String paramName) Returns true if this query contains a parameter with the specified name.
boolean	isEmpty() Returns true if this query contains no parameters.
Set<String>	parameterNames() Return the names of the parameters in this query.
int	size() Returns the number of parameters in this query.

Method Detail

isEmpty

boolean isEmpty()

Returns true if this query contains no parameters.

Returns:

true if this query contains no parameters

size

int size()

Returns the number of parameters in this query. If the query contains more than Integer.MAX_VALUE parameters, returns Integer.MAX_VALUE.

Returns:

the number of parameters in this query

hasParameter

boolean hasParameter(String paramName)

Returns true if this query contains a parameter with the specified name.

Parameters:

paramName - the name of the parameter

Returns:

true if this query contains a parameter with the specified name.

getParameter

Parameter getParameter(String paramName)

Returns the parameter with the specified name, or null if this query contains no parameter with that name.

Parameters:

paramName - the name of the parameter that is to be returned

Returns:

the parameter with the specified name, or null if this query does not contain a parameter with the specified name

Throws:

NullPointerException - if the specified key is null

parameterNames

Set<String> parameterNames()

Return the names of the parameters in this query. If no parameters are available and empty set will be returned.

Returns:

the names of the parameters in this query, or an empty set if the query is empty