RedlandQueryResults Class Reference

Inherits from	RedlandWrappedObject : NSObject
Declared in	RedlandQueryResults.h RedlandQueryResults.m

Overview

This class represents results from the execution of a RedlandQuery.

Warning: Query results work almost like an enumerator. You can go through the results by invoking next and get the bindings for each result through the various methods defined below. For simplicity, it is recommended that you use the resultEnumerator method to get a standard Cocoa NSEnumerator of the results.

Tasks

– wrappedQueryResults
Returns the underlying librdf_query_results object of the receiver.
– count
Returns the number of bindings so far
– next
Advances to the next result.
– finished
Returns YES if the query results are exhausted.
– bindings
Returns a dictionary of the current result bindings.
– countOfBindings
Returns the number of bindings of the receiver.
– valueOfBinding:
Returns the current value of the binding with the given name.
– valueOfBindingAtIndex:
Returns the current value of the binding at the given index.
– nameOfBindingAtIndex:
Returns the name of the binding at the given index.
– resultStream
Returns an RDF graph of the results.
– resultEnumerator
Returns an enumerator over the query results.
– stringRepresentationWithFormat:baseURI:
Turns query results into a string in the specified format.
– stringRepresentationWithName:baseURI:
Turns query results into a string in the specified name.
– stringRepresentationWithMimeType:baseURI:
Turns query results into a string in the specified mimeType.
– isBindings
Returns YES if the query results are in variable bindings format.
– isBoolean
Returns YES if the query results are in boolean format.
– isGraph
Returns YES if the query results are in graph format.
– getBoolean
Get boolean query result.

Instance Methods

bindings

Returns a dictionary of the current result bindings.

- (NSDictionary *)bindings

Return Value

An NSDictionary

Discussion

Returns a dictionary of the current result bindings.

Declared In

RedlandQueryResults.m

count

Returns the number of bindings so far

- (int)count

Return Value

Returns the number of bindings so far

Declared In

RedlandQueryResults.m

countOfBindings

Returns the number of bindings of the receiver.

- (int)countOfBindings

Return Value

An int

Discussion

Returns the number of bindings of the receiver.

Declared In

RedlandQueryResults.m

finished

Returns YES if the query results are exhausted.

- (BOOL)finished

Return Value

Returns YES if the query results are exhausted.

Declared In

RedlandQueryResults.m

getBoolean

Get boolean query result.

- (int)getBoolean

Return Value

Returns > 0 if true, 0 if false, < 0 on error or finished

Discussion

Get boolean query result.

Warning: The return value is only meaningful if this is a boolean query result.

Declared In

RedlandQueryResults.m

isBindings

Returns YES if the query results are in variable bindings format.

- (BOOL)isBindings

Return Value

A BOOL

Discussion

Returns YES if the query results are in variable bindings format.

Declared In

RedlandQueryResults.m

isBoolean

Returns YES if the query results are in boolean format.

- (BOOL)isBoolean

Return Value

A BOOL

Discussion

Returns YES if the query results are in boolean format.

Declared In

RedlandQueryResults.m

isGraph

Returns YES if the query results are in graph format.

- (BOOL)isGraph

Return Value

A BOOL

Discussion

Returns YES if the query results are in graph format.

Declared In

RedlandQueryResults.m

nameOfBindingAtIndex:

Returns the name of the binding at the given index.

- (NSString *)nameOfBindingAtIndex:(int)offset

Return Value

An NSString instance

Discussion

Returns the name of the binding at the given index.

Declared In

RedlandQueryResults.m

Advances to the next result.

- (BOOL)next

Return Value

Returns YES if there is a next result, otherwise NO.

Discussion

Advances to the next result.

Declared In

RedlandQueryResults.m

resultEnumerator

Returns an enumerator over the query results.

- (RedlandQueryResultsEnumerator *)resultEnumerator

Return Value

A RedlandQueryResultsEnumerator

Discussion

Returns an enumerator over the query results.

Warning: This is the recommended way to evaluate query results.

Declared In

RedlandQueryResults.m

resultStream

Returns an RDF graph of the results.

- (RedlandStream *)resultStream

Return Value

A RedlandStream

Discussion

Returns an RDF graph of the results.

Warning: The return value is only meaningful if this is an RDF graph query result.

Declared In

RedlandQueryResults.m

stringRepresentationWithFormat:baseURI:

Turns query results into a string in the specified format.

- (NSString *)stringRepresentationWithFormat:(RedlandURI *)formatURI baseURI:(RedlandURI *)baseURI

Return Value

An NSString instance

Discussion

Turns query results into a string in the specified format.

Declared In

RedlandQueryResults.m

stringRepresentationWithMimeType:baseURI:

Turns query results into a string in the specified mimeType.

- (NSString *)stringRepresentationWithMimeType:(NSString *)mimeType baseURI:(RedlandURI *)baseURI

Return Value

An NSString instance

Discussion

Turns query results into a string in the specified mimeType.

Declared In

RedlandQueryResults.m

stringRepresentationWithName:baseURI:

Turns query results into a string in the specified name.

- (NSString *)stringRepresentationWithName:(NSString *)name baseURI:(RedlandURI *)baseURI

Return Value

An NSString instance

Discussion

Turns query results into a string in the specified name.

Declared In

RedlandQueryResults.m

valueOfBinding:

Returns the current value of the binding with the given name.

- (RedlandNode *)valueOfBinding:(NSString *)aName

Parameters

aName: NSString

Return Value

A RedlandNode object

Discussion

Returns the current value of the binding with the given name.

Declared In

RedlandQueryResults.m

valueOfBindingAtIndex:

Returns the current value of the binding at the given index.

- (RedlandNode *)valueOfBindingAtIndex:(int)offset

Return Value

A RedlandNode object

Discussion

Returns the current value of the binding at the given index.

Declared In

RedlandQueryResults.m

wrappedQueryResults

Returns the underlying librdf_query_results object of the receiver.

- (librdf_query_results *)wrappedQueryResults

Return Value

Returns the underlying librdf_query_results object of the receiver.

Declared In

RedlandQueryResults.m