2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 ONAP
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.ccsdk.sli.core.sli.provider;
23 import org.onap.ccsdk.sli.core.sli.BreakNodeException;
24 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
25 import org.onap.ccsdk.sli.core.sli.SvcLogicException;
26 import org.onap.ccsdk.sli.core.sli.SvcLogicExpression;
27 import org.onap.ccsdk.sli.core.sli.SvcLogicNode;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
31 public class WhileNodeExecutor extends SvcLogicNodeExecutor {
33 private static final Logger LOG = LoggerFactory.getLogger(WhileNodeExecutor.class);
36 public SvcLogicNode execute(SvcLogicServiceImpl svc, SvcLogicNode node, SvcLogicContext ctx) throws SvcLogicException {
38 String testResult = evaluateNodeTest(node, ctx);
39 SvcLogicExpression silentFailureExpr = node.getAttribute("do");
40 String doWhile = SvcLogicExpressionResolver.evaluate(silentFailureExpr, node, ctx);
41 if ("true".equals(doWhile)) {
42 LOG.debug("While loop will execute once regardless of expression because do is set to true");
46 while ("true".equals(testResult) || "true".equals(doWhile)) {
47 if (!"true".equals(doWhile)) {
48 LOG.debug("Test expression (" + node.getAttribute("test") + ") evaluates to true, executing loop.");
50 int numOutcomes = node.getNumOutcomes() + 1;
51 for (int i = 0; i < numOutcomes; i++) {
52 SvcLogicNode nextNode = node.getOutcomeValue("" + (i + 1));
53 if (nextNode != null) {
54 while (nextNode != null) {
55 nextNode = svc.executeNode(nextNode, ctx);
58 if ("true".equals(doWhile)) {
59 LOG.debug("Do executed, will only execute again if test expression is true.");
62 testResult = evaluateNodeTest(node, ctx);
63 LOG.debug("test expression (" + node.getAttribute("test") + ") evaluates to " + testResult);
67 LOG.debug("testResult was " + testResult + " which is not equal to true, exiting while loop.");
68 } catch (BreakNodeException e) {
69 LOG.debug("WhileNodeExecutor caught break");