1 /*******************************************************************************
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2 * ============LICENSE_START====================================================
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4 * * ===========================================================================
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5 * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
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6 * * Copyright © 2017 Amdocs
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7 * * ===========================================================================
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8 * * Licensed under the Apache License, Version 2.0 (the "License");
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9 * * you may not use this file except in compliance with the License.
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10 * * You may obtain a copy of the License at
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12 * * http://www.apache.org/licenses/LICENSE-2.0
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14 * * Unless required by applicable law or agreed to in writing, software
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15 * * distributed under the License is distributed on an "AS IS" BASIS,
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16 * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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17 * * See the License for the specific language governing permissions and
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18 * * limitations under the License.
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19 * * ============LICENSE_END====================================================
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21 * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
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23 ******************************************************************************/
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24 package com.att.rosetta;
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26 import java.util.Iterator;
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28 import com.att.inno.env.Env;
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29 import com.att.inno.env.TimeTaken;
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31 public abstract class Marshal<T> implements Parse<T, Marshal.State> {
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34 * @see com.att.rosetta.Parse#newParsed()
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37 public Parsed<State> newParsed() throws ParseException {
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38 return new Parsed<State>(new State());
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42 public TimeTaken start(Env env) {
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43 //TODO is a way to mark not-JSON?
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44 return env.start("Rosetta Marshal", Env.JSON);
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47 public static class State {
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48 // Note: Need a STATEFUL stack... one that will remain stateful until marked as finished
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49 // "finished" is know by Iterators with no more to do/null
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50 // Thus the concept of "Ladder", which one ascends and decends
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51 public Ladder<Iterator<?>> ladder = new Ladder<Iterator<?>>();
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52 public boolean smallest = true;
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55 public static final Iterator<Void> DONE_ITERATOR = new Iterator<Void>() {
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57 public boolean hasNext() {
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62 public Void next() {
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67 public void remove() {
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72 * Typical definition of Done is when Iterator in Ladder is "DONE_ITERATOR"
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74 * It is important, however, that the "Ladder Rung" is set to the right level.
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79 public boolean amFinished(State state) {
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80 return DONE_ITERATOR.equals(state.ladder.peek());
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