org.ovirt.engine.api.xml.V4XmlJobReader Maven / Gradle / Ivy

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/*
Copyright (c) 2015 Red Hat, Inc.
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.
*/

package org.ovirt.engine.api.xml;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import org.ovirt.api.metamodel.runtime.xml.XmlReader;
import org.ovirt.engine.api.containers.V4JobContainer;
import org.ovirt.engine.api.types.V4Job;

public class V4XmlJobReader {
    
    public static V4Job readOne(XmlReader reader) {
        // Do nothing if there aren't more tags:
        if (!reader.forward()) {
            return null;
        }
        
        // Create the object:
        V4JobContainer object = new V4JobContainer();
        
        // Process the inner elements:
        reader.next();
        while (reader.forward()) {
            reader.skip();
        }
        
        // Discard the end tag:
        reader.next();
        
        return object;
    }
    
    public static Iterator iterateMany(XmlReader reader) {
        return new Iterator() {
            private boolean first = true;
            
            @Override
            public boolean hasNext() {
                if (first) {
                    if (!reader.forward()) {
                        return false;
                    }
                    reader.next();
                    first = false;
                }
                if (!reader.forward()) {
                    reader.next();
                    return false;
                }
                return true;
            }
            
            @Override
            public V4Job next() {
                V4Job next = readOne(reader);
                if (next == null) {
                    throw new NoSuchElementException();
                }
                return next;
            }
        };
    }
    
    public static List readMany(XmlReader reader) {
        List list = new ArrayList<>();
        Iterator iterator = iterateMany(reader);
        while (iterator.hasNext()) {
            list.add(iterator.next());
        }
        return list;
    }
    
}