AT&T 2.0.19 Code drop, stage 1

[aaf/authz.git] / misc / rosetta / src / main / java / org / onap / aaf / misc / rosetta / marshal / ObjArray.java

diff --git a/misc/rosetta/src/main/java/org/onap/aaf/misc/rosetta/marshal/ObjArray.java b/misc/rosetta/src/main/java/org/onap/aaf/misc/rosetta/marshal/ObjArray.java
new file mode 100644 (file)
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--- /dev/null
+++ b/misc/rosetta/src/main/java/org/onap/aaf/misc/rosetta/marshal/ObjArray.java
@@ -0,0 +1,90 @@
+/**
+ * ============LICENSE_START====================================================
+ * org.onap.aaf
+ * ===========================================================================
+ * Copyright (c) 2018 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.onap.aaf.misc.rosetta.marshal;
+
+import java.util.Iterator;
+import java.util.List;
+
+import org.onap.aaf.misc.rosetta.Ladder;
+import org.onap.aaf.misc.rosetta.Marshal;
+import org.onap.aaf.misc.rosetta.ParseException;
+import org.onap.aaf.misc.rosetta.Parsed;
+
+
+public abstract class ObjArray<T,S> extends Marshal<T> {
+       private String name;
+       private Marshal<S> subMarshaller;
+
+       public ObjArray(String name, Marshal<S> subMarshaller) {
+               this.name = name;
+               this.subMarshaller = subMarshaller;
+       }
+
+       @SuppressWarnings("unchecked")
+       @Override
+       public Parsed<State> parse(T t, Parsed<State> parsed) throws ParseException {
+               Ladder<Iterator<?>> ladder = parsed.state.ladder;
+               Iterator<?> iter = ladder.peek();
+               if(iter==null) {
+                       List<S> list = data(t);
+                       if(list.isEmpty() && parsed.state.smallest) {
+                               ladder.push(DONE_ITERATOR);
+                       } else {
+                               ladder.push(new ListIterator<S>(list));
+                               parsed.event = START_ARRAY;
+                               parsed.name = name;
+                       }
+               } else if (DONE_ITERATOR.equals(iter)) {
+               } else {
+                       ladder.ascend(); // look at field info
+                               Iterator<?> memIter = ladder.peek();
+                               ListIterator<S> mems = (ListIterator<S>)iter;
+                               S mem;
+                               if(memIter==null) {
+                                       mem=mems.next();
+                               } else if(!DONE_ITERATOR.equals(memIter)) {
+                                       mem=mems.peek();
+                               } else if(iter.hasNext()) {
+                                       mem=null;
+                                       ladder.push(null);
+                               } else {
+                                       mem=null;
+                               }
+                               
+                               if(mem!=null)
+                                       parsed = subMarshaller.parse(mem, parsed);
+                       ladder.descend();
+                       if(mem==null) {
+                               if(iter.hasNext()) {
+                                       parsed.event = NEXT;
+                               } else {
+                                       parsed.event = END_ARRAY;
+                                       ladder.push(DONE_ITERATOR);
+                               }
+                       }
+               }
+               return parsed; // if unchanged, then it will end process
+       }
+
+       protected abstract List<S> data(T t);
+
+}