X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=sli%2Fprovider%2Fsrc%2Fmain%2Fjava%2Forg%2Fopenecomp%2Fsdnc%2Fsli%2Fprovider%2FWhileNodeExecutor.java;fp=sli%2Fprovider%2Fsrc%2Fmain%2Fjava%2Forg%2Fopenecomp%2Fsdnc%2Fsli%2Fprovider%2FWhileNodeExecutor.java;h=7ec36e1ba7c907af315609e67edf06eb7f66f803;hb=dda3edb6257146ab6599bfd44658a9791037511d;hp=0000000000000000000000000000000000000000;hpb=e69f794b32db291ace90ac7934e7938bc79d815e;p=sdnc%2Fcore.git

diff --git a/sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/WhileNodeExecutor.java b/sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/WhileNodeExecutor.java
new file mode 100644
index 0000000..7ec36e1
--- /dev/null
+++ b/sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/WhileNodeExecutor.java
@@ -0,0 +1,76 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : SDN-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdnc.sli.provider;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.openecomp.sdnc.sli.BreakNodeException;
+import org.openecomp.sdnc.sli.SvcLogicContext;
+import org.openecomp.sdnc.sli.SvcLogicException;
+import org.openecomp.sdnc.sli.SvcLogicExpression;
+import org.openecomp.sdnc.sli.SvcLogicNode;
+
+public class WhileNodeExecutor extends SvcLogicNodeExecutor {
+
+    private static final Logger LOG = LoggerFactory.getLogger(WhileNodeExecutor.class);
+
+    @Override
+    public SvcLogicNode execute(SvcLogicServiceImpl svc, SvcLogicNode node, SvcLogicContext ctx) throws SvcLogicException {
+
+        String testResult = evaluateNodeTest(node, ctx);
+        SvcLogicExpression silentFailureExpr = node.getAttribute("do");
+        String doWhile = SvcLogicExpressionResolver.evaluate(silentFailureExpr, node, ctx);
+        if ("true".equals(doWhile)) {
+            LOG.debug("While loop will execute once regardless of expression because do is set to true");
+        }
+
+        try {
+            while ("true".equals(testResult) || "true".equals(doWhile)) {
+                if (!"true".equals(doWhile)) {
+                    LOG.debug("Test expression (" + node.getAttribute("test") + ") evaluates to true, executing loop.");
+                }
+                int numOutcomes = node.getNumOutcomes() + 1;
+                for (int i = 0; i < numOutcomes; i++) {
+                    SvcLogicNode nextNode = node.getOutcomeValue("" + (i + 1));
+                    if (nextNode != null) {
+                        while (nextNode != null) {
+                            nextNode = svc.executeNode(nextNode, ctx);
+                        }
+                    } else {
+                        if ("true".equals(doWhile)) {
+                            LOG.debug("Do executed, will only execute again if test expression is true.");
+                            doWhile = "false";
+                        }
+                        testResult = evaluateNodeTest(node, ctx);
+                        LOG.debug("test expression (" + node.getAttribute("test") + ") evaluates to " + testResult);
+                    }
+                }
+            }
+            LOG.debug("testResult was " + testResult + " which is not equal to true, exiting while loop.");
+        } catch (BreakNodeException e) {
+            LOG.debug("WhileNodeExecutor caught break");
+        }
+        return (null);
+    }
+
+}