| /* |
| * Copyright (c) 2014, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Dmitry Kornilov - initial implementation |
| package org.eclipse.persistence.jpa.rs.features.fieldsfiltering; |
| |
| import org.eclipse.persistence.jpa.rs.exceptions.JPARSException; |
| import org.eclipse.persistence.jpa.rs.resources.common.AbstractResource; |
| |
| import jakarta.ws.rs.core.UriInfo; |
| import java.util.Map; |
| |
| /** |
| * Fields filtering feature validator/processor. |
| * |
| * @author Dmitry Kornilov |
| * @since EclipseLink 2.6.0 |
| */ |
| public final class FieldsFilteringValidator { |
| public static final String FIELDS_PARAM_NAME = "fields"; |
| public static final String EXCL_FIELDS_PARAM_NAME = "excludeFields"; |
| |
| private final Map<String, Object> queryParameters; |
| private FieldsFilter filter; |
| |
| /** |
| * Creates the validator. |
| * |
| * @param uri request URI. |
| */ |
| public FieldsFilteringValidator(UriInfo uri) { |
| queryParameters = AbstractResource.getQueryParameters(uri); |
| } |
| |
| /** |
| * Checks if request is valid. |
| * |
| * @return true if request is valid and feature is supported, false if request is valid but feature is not supported. |
| * @throws org.eclipse.persistence.jpa.rs.exceptions.JPARSException in case of any validation errors. |
| */ |
| public boolean isFeatureApplicable() throws JPARSException { |
| if (!queryParameters.containsKey(FIELDS_PARAM_NAME) && !queryParameters.containsKey(EXCL_FIELDS_PARAM_NAME)) { |
| return false; |
| } |
| |
| // Throw exception if both 'fields' and 'excludeFields' present |
| if (queryParameters.containsKey(FIELDS_PARAM_NAME) && queryParameters.containsKey(EXCL_FIELDS_PARAM_NAME)) { |
| throw JPARSException.fieldsFilteringBothParametersPresent(); |
| } |
| |
| if (queryParameters.containsKey(FIELDS_PARAM_NAME)) { |
| filter = new FieldsFilter(FieldsFilterType.INCLUDE, ((String) queryParameters.get(FIELDS_PARAM_NAME))); |
| } else { |
| filter = new FieldsFilter(FieldsFilterType.EXCLUDE, ((String) queryParameters.get(EXCL_FIELDS_PARAM_NAME))); |
| } |
| |
| return true; |
| } |
| |
| /** |
| * {@link FieldsFilter} object containing a list of fields to filter. |
| * |
| * @return FieldsFilter |
| */ |
| public FieldsFilter getFilter() { |
| return filter; |
| } |
| } |