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package io.legaldocml.akn.element;

import com.google.common.collect.ImmutableMap;
import io.legaldocml.akn.AknObject;
import io.legaldocml.akn.attribute.Source;
import io.legaldocml.akn.type.AgentRef;
import io.legaldocml.akn.util.AknList;
import io.legaldocml.akn.visitor.AknVisitor;
import io.legaldocml.io.AttributeGetterSetter;
import io.legaldocml.io.XmlReader;
import io.legaldocml.io.XmlWriter;
import io.legaldocml.io.impl.Buffers;

import java.io.IOException;

import static io.legaldocml.akn.AknAttributes.SOURCE;
import static io.legaldocml.akn.AknElements.TEMPORAL_DATA;
import static io.legaldocml.akn.AknElements.TEMPORAL_GROUP;
import static io.legaldocml.akn.element.Attributes.attributeGetterSetter4AgentRef;
import static io.legaldocml.akn.util.XmlWriterHelper.writeSource;
import static io.legaldocml.unsafe.UnsafeHelper.getFieldOffset;


/**
 *  *   
 *     
 *       
 *         
 *       
 *       
 *     
 *   
 * 
 *
 * @author Jacques Militello
 */
public final class TemporalData implements Source {

    /**
     * Memory address.
     */
    private static final long ADDRESS_TEMPORAL_DATA = Buffers.address(TEMPORAL_DATA);

    private static final ImmutableMap> ATTRIBUTES;

    static {
        ATTRIBUTES = ImmutableMap.>builder()
                .put(SOURCE, attributeGetterSetter4AgentRef(SOURCE, getFieldOffset(TemporalData.class, "source")))
                .build();
    }

    // Mandatory (min 1).
    private final AknList elements = new AknList<>(new TemporalGroup[4]);

    // Mandatory
    private AgentRef source;

    /**
     * {@inheritDoc}
     */
    public AgentRef getSource() {
        return this.source;
    }

    /**
     * {@inheritDoc}
     */
    public void setSource(AgentRef source) {
        this.source = source;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void write(XmlWriter writer) throws IOException {
        writer.writeStart(ADDRESS_TEMPORAL_DATA, 12);
        writeSource(writer, this);
        this.elements.write(writer);
        writer.writeEnd(ADDRESS_TEMPORAL_DATA, 12);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void read(XmlReader reader) {
        Attributes.read(reader, this);
        reader.nextStartOrEndElement();
        if (reader.getQName().equalsLocalName(TEMPORAL_GROUP)) {
            TemporalGroup temporalGroup;
            do {
                temporalGroup = new TemporalGroup();
                temporalGroup.read(reader);
                this.elements.add(temporalGroup);
                reader.nextStartOrEndElement();
            } while (reader.getQName().equalsLocalName(TEMPORAL_GROUP));
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public ImmutableMap> attributes() {
        return ATTRIBUTES;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String name() {
        return TEMPORAL_DATA;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void accept(AknVisitor visitor) {
        if (visitor.visitEnter(this)) {
            elements.accept(visitor);
            visitor.visitLeave(this);
        }
    }

}