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/*
* Copyright 2002-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.client;
import java.net.URI;
import java.util.Map;
import java.util.Set;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
/**
* Interface specifying a basic set of RESTful operations. Implemented by {@link RestTemplate}.
* Not often used directly, but a useful option to enhance testability, as it can easily
* be mocked or stubbed.
*
* @author Arjen Poutsma
* @author Juergen Hoeller
* @since 1.0
* @see RestTemplate
*/
public interface RestOperations {
// GET
/**
* Retrieve a representation by doing a GET on the specified URL.
* The response (if any) is converted and returned.
* URI Template variables are expanded using the given URI variables, if any.
* @param url the URL
* @param responseType the type of the return value
* @param uriVariables the variables to expand the template
* @return the converted object
*/
T getForObject(String url, Class responseType, Object... uriVariables) throws RestClientException;
/**
* Retrieve a representation by doing a GET on the URI template.
* The response (if any) is converted and returned.
* URI Template variables are expanded using the given map.
* @param url the URL
* @param responseType the type of the return value
* @param uriVariables the map containing variables for the URI template
* @return the converted object
*/
T getForObject(String url, Class responseType, Map uriVariables) throws RestClientException;
/**
* Retrieve a representation by doing a GET on the URL .
* The response (if any) is converted and returned.
* @param url the URL
* @param responseType the type of the return value
* @return the converted object
*/
T getForObject(URI url, Class responseType) throws RestClientException;
/**
* Retrieve an entity by doing a GET on the specified URL.
* The response is converted and stored in an {@link ResponseEntity}.
* URI Template variables are expanded using the given URI variables, if any.
* @param url the URL
* @param responseType the type of the return value
* @param uriVariables the variables to expand the template
* @return the entity
*/
ResponseEntity getForEntity(String url, Class responseType, Object... uriVariables) throws RestClientException;
/**
* Retrieve a representation by doing a GET on the URI template.
* The response is converted and stored in an {@link ResponseEntity}.
* URI Template variables are expanded using the given map.
* @param url the URL
* @param responseType the type of the return value
* @param uriVariables the map containing variables for the URI template
* @return the converted object
*/
ResponseEntity getForEntity(String url, Class responseType, Map uriVariables) throws RestClientException;
/**
* Retrieve a representation by doing a GET on the URL .
* The response is converted and stored in an {@link ResponseEntity}.
* @param url the URL
* @param responseType the type of the return value
* @return the converted object
*/
ResponseEntity getForEntity(URI url, Class responseType) throws RestClientException;
// HEAD
/**
* Retrieve all headers of the resource specified by the URI template.
* URI Template variables are expanded using the given URI variables, if any.
* @param url the URL
* @param uriVariables the variables to expand the template
* @return all HTTP headers of that resource
*/
HttpHeaders headForHeaders(String url, Object... uriVariables) throws RestClientException;
/**
* Retrieve all headers of the resource specified by the URI template.
*
URI Template variables are expanded using the given map.
* @param url the URL
* @param uriVariables the map containing variables for the URI template
* @return all HTTP headers of that resource
*/
HttpHeaders headForHeaders(String url, Map uriVariables) throws RestClientException;
/**
* Retrieve all headers of the resource specified by the URL.
* @param url the URL
* @return all HTTP headers of that resource
*/
HttpHeaders headForHeaders(URI url) throws RestClientException;
// POST
/**
* Create a new resource by POSTing the given object to the URI template, and returns the value of the
* Location header. This header typically indicates where the new resource is stored.
* URI Template variables are expanded using the given URI variables, if any.
*
The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be POSTed, may be null
* @param uriVariables the variables to expand the template
* @return the value for the Location header
* @see HttpEntity
*/
URI postForLocation(String url, Object request, Object... uriVariables) throws RestClientException;
/**
* Create a new resource by POSTing the given object to the URI template, and returns the value of the
* Location header. This header typically indicates where the new resource is stored.
*
URI Template variables are expanded using the given map.
*
The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be POSTed, may be null
* @param uriVariables the variables to expand the template
* @return the value for the Location header
* @see HttpEntity
*/
URI postForLocation(String url, Object request, Map uriVariables) throws RestClientException;
/**
* Create a new resource by POSTing the given object to the URL, and returns the value of the
* Location header. This header typically indicates where the new resource is stored.
* The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be POSTed, may be null
* @return the value for the Location header
* @see HttpEntity
*/
URI postForLocation(URI url, Object request) throws RestClientException;
/**
* Create a new resource by POSTing the given object to the URI template,
* and returns the representation found in the response.
*
URI Template variables are expanded using the given URI variables, if any.
*
The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be POSTed, may be null
* @param responseType the type of the return value
* @param uriVariables the variables to expand the template
* @return the converted object
* @see HttpEntity
*/
T postForObject(String url, Object request, Class responseType, Object... uriVariables)
throws RestClientException;
/**
* Create a new resource by POSTing the given object to the URI template,
* and returns the representation found in the response.
* URI Template variables are expanded using the given map.
*
The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be POSTed, may be null
* @param responseType the type of the return value
* @param uriVariables the variables to expand the template
* @return the converted object
* @see HttpEntity
*/
T postForObject(String url, Object request, Class responseType, Map uriVariables)
throws RestClientException;
/**
* Create a new resource by POSTing the given object to the URL,
* and returns the representation found in the response.
* The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be POSTed, may be null
* @param responseType the type of the return value
* @return the converted object
* @see HttpEntity
*/
T postForObject(URI url, Object request, Class responseType) throws RestClientException;
/**
* Create a new resource by POSTing the given object to the URI template,
* and returns the response as {@link ResponseEntity}.
* URI Template variables are expanded using the given URI variables, if any.
*
The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be POSTed, may be null
* @param uriVariables the variables to expand the template
* @return the converted object
* @see HttpEntity
*/
ResponseEntity postForEntity(String url, Object request, Class responseType, Object... uriVariables)
throws RestClientException;
/**
* Create a new resource by POSTing the given object to the URI template,
* and returns the response as {@link HttpEntity}.
* URI Template variables are expanded using the given map.
*
The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be POSTed, may be null
* @param uriVariables the variables to expand the template
* @return the converted object
* @see HttpEntity
*/
ResponseEntity postForEntity(String url, Object request, Class responseType, Map uriVariables)
throws RestClientException;
/**
* Create a new resource by POSTing the given object to the URL,
* and returns the response as {@link ResponseEntity}.
* The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be POSTed, may be null
* @return the converted object
* @see HttpEntity
*/
ResponseEntity postForEntity(URI url, Object request, Class responseType) throws RestClientException;
// PUT
/**
* Create or update a resource by PUTting the given object to the URI.
* URI Template variables are expanded using the given URI variables, if any.
*
The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be PUT, may be null
* @param uriVariables the variables to expand the template
* @see HttpEntity
*/
void put(String url, Object request, Object... uriVariables) throws RestClientException;
/**
* Creates a new resource by PUTting the given object to URI template.
*
URI Template variables are expanded using the given map.
*
The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be PUT, may be null
* @param uriVariables the variables to expand the template
* @see HttpEntity
*/
void put(String url, Object request, Map uriVariables) throws RestClientException;
/**
* Creates a new resource by PUTting the given object to URL.
* The {@code request} parameter can be a {@link HttpEntity} in order to
* add additional HTTP headers to the request.
* @param url the URL
* @param request the Object to be PUT, may be null
* @see HttpEntity
*/
void put(URI url, Object request) throws RestClientException;
// DELETE
/**
* Delete the resources at the specified URI.
*
URI Template variables are expanded using the given URI variables, if any.
* @param url the URL
* @param uriVariables the variables to expand in the template
*/
void delete(String url, Object... uriVariables) throws RestClientException;
/**
* Delete the resources at the specified URI.
*
URI Template variables are expanded using the given map.
*
* @param url the URL
* @param uriVariables the variables to expand the template
*/
void delete(String url, Map uriVariables) throws RestClientException;
/**
* Delete the resources at the specified URL.
* @param url the URL
*/
void delete(URI url) throws RestClientException;
// OPTIONS
/**
* Return the value of the Allow header for the given URI.
* URI Template variables are expanded using the given URI variables, if any.
* @param url the URL
* @param uriVariables the variables to expand in the template
* @return the value of the allow header
*/
Set optionsForAllow(String url, Object... uriVariables) throws RestClientException;
/**
* Return the value of the Allow header for the given URI.
* URI Template variables are expanded using the given map.
* @param url the URL
* @param uriVariables the variables to expand in the template
* @return the value of the allow header
*/
Set optionsForAllow(String url, Map uriVariables) throws RestClientException;
/**
* Return the value of the Allow header for the given URL.
* @param url the URL
* @return the value of the allow header
*/
Set optionsForAllow(URI url) throws RestClientException;
// exchange
/**
* Execute the HTTP method to the given URI template, writing the given request entity to the request, and
* returns the response as {@link ResponseEntity}.
* URI Template variables are expanded using the given URI variables, if any.
* @param url the URL
* @param method the HTTP method (GET, POST, etc)
* @param requestEntity the entity (headers and/or body) to write to the request, may be {@code null}
* @param responseType the type of the return value
* @param uriVariables the variables to expand in the template
* @return the response as entity
*/
ResponseEntity exchange(String url, HttpMethod method, HttpEntity requestEntity,
Class responseType, Object... uriVariables) throws RestClientException;
/**
* Execute the HTTP method to the given URI template, writing the given request entity to the request, and
* returns the response as {@link ResponseEntity}.
* URI Template variables are expanded using the given URI variables, if any.
* @param url the URL
* @param method the HTTP method (GET, POST, etc)
* @param requestEntity the entity (headers and/or body) to write to the request, may be {@code null}
* @param responseType the type of the return value
* @param uriVariables the variables to expand in the template
* @return the response as entity
*/
ResponseEntity exchange(String url, HttpMethod method, HttpEntity requestEntity,
Class responseType, Map uriVariables) throws RestClientException;
/**
* Execute the HTTP method to the given URI template, writing the given request entity to the request, and
* returns the response as {@link ResponseEntity}.
* @param url the URL
* @param method the HTTP method (GET, POST, etc)
* @param requestEntity the entity (headers and/or body) to write to the request, may be {@code null}
* @param responseType the type of the return value
* @return the response as entity
*/
ResponseEntity exchange(URI url, HttpMethod method, HttpEntity requestEntity,
Class responseType) throws RestClientException;
// general execution
/**
* Execute the HTTP method to the given URI template, preparing the request with the
* {@link RequestCallback}, and reading the response with a {@link ResponseExtractor}.
* URI Template variables are expanded using the given URI variables, if any.
* @param url the URL
* @param method the HTTP method (GET, POST, etc)
* @param requestCallback object that prepares the request
* @param responseExtractor object that extracts the return value from the response
* @param uriVariables the variables to expand in the template
* @return an arbitrary object, as returned by the {@link ResponseExtractor}
*/
T execute(String url, HttpMethod method, RequestCallback requestCallback,
ResponseExtractor responseExtractor, Object... uriVariables) throws RestClientException;
/**
* Execute the HTTP method to the given URI template, preparing the request with the
* {@link RequestCallback}, and reading the response with a {@link ResponseExtractor}.
* URI Template variables are expanded using the given URI variables map.
* @param url the URL
* @param method the HTTP method (GET, POST, etc)
* @param requestCallback object that prepares the request
* @param responseExtractor object that extracts the return value from the response
* @param uriVariables the variables to expand in the template
* @return an arbitrary object, as returned by the {@link ResponseExtractor}
*/
T execute(String url, HttpMethod method, RequestCallback requestCallback,
ResponseExtractor responseExtractor, Map uriVariables) throws RestClientException;
/**
* Execute the HTTP method to the given URL, preparing the request with the
* {@link RequestCallback}, and reading the response with a {@link ResponseExtractor}.
* @param url the URL
* @param method the HTTP method (GET, POST, etc)
* @param requestCallback object that prepares the request
* @param responseExtractor object that extracts the return value from the response
* @return an arbitrary object, as returned by the {@link ResponseExtractor}
*/
T execute(URI url, HttpMethod method, RequestCallback requestCallback,
ResponseExtractor responseExtractor) throws RestClientException;
}