io.syndesis.rest.v1.operations.PaginationOptionsFromQueryParams Maven / Gradle / Ivy
/*
* Copyright (C) 2016 Red Hat, Inc.
*
* 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 io.syndesis.rest.v1.operations;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.UriInfo;
import io.syndesis.rest.util.PaginationOptions;
/**
* Extracts the pagination options from the request.
*/
public class PaginationOptionsFromQueryParams implements PaginationOptions {
private final int page;
private final int perPage;
/**
* Extracts the pagination options from the request.
* @param uri The request context.
*/
public PaginationOptionsFromQueryParams(UriInfo uri) {
MultivaluedMap queryParams = uri.getQueryParameters();
String pageQuery = queryParams.getFirst("page");
if (pageQuery == null || pageQuery.isEmpty()) {
page = 1;
} else {
page = Integer.parseInt(pageQuery);
}
String perPageQuery = queryParams.getFirst("per_page");
if (perPageQuery == null || perPageQuery.isEmpty()) {
perPage = 20;
} else {
perPage = Integer.parseInt(perPageQuery);
}
}
/**
*
* @return The requested page number.
*/
@Override
public int getPage() {
return page;
}
/**
*
* @return The requested number per page.
*/
@Override
public int getPerPage() {
return perPage;
}
}