/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2014-2017 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package org.glassfish.jersey.message.filtering;
import java.lang.annotation.Annotation;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriInfo;
import javax.annotation.PostConstruct;
import javax.inject.Singleton;
import org.glassfish.jersey.internal.util.Tokenizer;
import org.glassfish.jersey.message.filtering.spi.ScopeResolver;
@Singleton
public class SelectableScopeResolver implements ScopeResolver {
/**
* Prefix for all selectable scopes
*/
public static final String PREFIX = SelectableScopeResolver.class.getName() + "_";
/**
* Scope used for selecting all fields, i.e.: when no filter is applied
*/
public static final String DEFAULT_SCOPE = PREFIX + "*";
/**
* Query parameter name for selectable feature, set to default value
*/
private static String SELECTABLE_PARAM_NAME = "select";
@Context
private Configuration configuration;
@Context
private UriInfo uriInfo;
@PostConstruct
private void init() {
final String paramName = (String) configuration.getProperty(SelectableEntityFilteringFeature.QUERY_PARAM_NAME);
SELECTABLE_PARAM_NAME = paramName != null ? paramName : SELECTABLE_PARAM_NAME;
}
@Override
public Set<String> resolve(final Annotation[] annotations) {
final Set<String> scopes = new HashSet<>();
final List<String> fields = uriInfo.getQueryParameters().get(SELECTABLE_PARAM_NAME);
if (fields != null && !fields.isEmpty()) {
for (final String field : fields) {
scopes.addAll(getScopesForField(field));
}
} else {
scopes.add(DEFAULT_SCOPE);
}
return scopes;
}
private Set<String> getScopesForField(final String fieldName) {
final Set<String> scopes = new HashSet<>();
// add specific scope in case of specific request
final String[] fields = Tokenizer.tokenize(fieldName, ",");
for (final String field : fields) {
final String[] subfields = Tokenizer.tokenize(field, ".");
// in case of nested path, add first level as stand-alone to ensure subgraph is added
scopes.add(SelectableScopeResolver.PREFIX + subfields[0]);
if (subfields.length > 1) {
scopes.add(SelectableScopeResolver.PREFIX + field);
}
}
return scopes;
}
}