/* * ============LICENSE_START======================================================= * Copyright (C) 2021 Nordix Foundation * Modifications Copyright (C) 2021 Bell Canada. All rights reserved. * ================================================================================ * 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. * * SPDX-License-Identifier: Apache-2.0 * ============LICENSE_END========================================================= */ package org.onap.cps.spi.query; import java.util.regex.Matcher; import java.util.regex.Pattern; import lombok.AccessLevel; import lombok.Getter; import lombok.Setter; import org.onap.cps.spi.exceptions.CpsPathException; @Getter @Setter(AccessLevel.PRIVATE) public class CpsPathQuery { private String xpathPrefix; private String leafName; private Object leafValue; public static final Pattern QUERY_CPS_PATH_WITH_SINGLE_LEAF_PATTERN = Pattern.compile("(.*)\\[\\s*@(.*?)\\s*=\\s*(.*?)\\s*]"); public static final Pattern LEAF_STRING_VALUE_PATTERN = Pattern.compile("['\"](.*)['\"]"); public static final Pattern LEAF_INTEGER_VALUE_PATTERN = Pattern.compile("[-+]?\\d+"); /** * Returns a xpath prefix, leaf name and leaf value for the given cps path. * * @param cpsPath cps path * @return a CpsPath object containing the xpath prefix, leaf name and leaf value. */ public static CpsPathQuery createFrom(final String cpsPath) { final Matcher matcher = QUERY_CPS_PATH_WITH_SINGLE_LEAF_PATTERN.matcher(cpsPath); if (matcher.matches()) { final CpsPathQuery cpsPathQuery = new CpsPathQuery(); cpsPathQuery.setXpathPrefix(matcher.group(1)); cpsPathQuery.setLeafName(matcher.group(2)); cpsPathQuery.setLeafValue(convertLeafValueToCorrectType(matcher.group(3))); return cpsPathQuery; } throw new CpsPathException("Invalid cps path.", String.format("Cannot interpret or parse cps path %s.", cpsPath)); } private static Object convertLeafValueToCorrectType(final String leafValueString) { final Matcher stringValueWithQuotesMatcher = LEAF_STRING_VALUE_PATTERN.matcher(leafValueString); if (stringValueWithQuotesMatcher.matches()) { return stringValueWithQuotesMatcher.group(1); } final Matcher integerValueMatcher = LEAF_INTEGER_VALUE_PATTERN.matcher(leafValueString); if (integerValueMatcher.matches()) { return Integer.valueOf(leafValueString); } throw new CpsPathException("Unsupported leaf value.", String.format("Unsupported leaf value %s in cps path.", leafValueString)); } }