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/*******************************************************************************
* ============LICENSE_START====================================================
* * org.onap.aaf
* * ===========================================================================
* * Copyright © 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====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package org.onap.aaf.rosetta.marshal;
import java.util.Iterator;
import java.util.List;
import org.onap.aaf.rosetta.Ladder;
import org.onap.aaf.rosetta.Marshal;
import org.onap.aaf.rosetta.ParseException;
import org.onap.aaf.rosetta.Parsed;
public abstract class FieldArray<T,S> extends Marshal<T> {
private DataWriter<S> dataWriter;
private String name;
public FieldArray(String name, DataWriter<S> dw) {
this.name = name;
dataWriter = dw;
}
@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.isString=dataWriter.write(mem, parsed.sb);
parsed.event = NEXT;
}
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);
}
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