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package eu.dnetlib.pace.model.gt;
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import java.lang.reflect.Type;
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import com.google.common.base.Function;
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import com.google.common.base.Joiner;
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import com.google.common.collect.Iterables;
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import com.google.common.collect.Lists;
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import com.google.gson.JsonDeserializationContext;
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import com.google.gson.JsonDeserializer;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonParseException;
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public class GTAuthorOafSerialiser implements JsonDeserializer<GTAuthor> {
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private static final String VALUE = "value";
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private static final String SECONDNAMES = "secondnames";
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private static final String FIRSTNAME = "firstname";
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private static final String FULLNAME = "fullname";
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private static final String ID = "id";
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private static final String MERGEDPERSON = "mergedperson";
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private static final String METADATA = "metadata";
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private static final String ANCHOR_ID = "anchorId";
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private static final String COAUTHOR = "coauthor";
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@Override
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public GTAuthor deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context) throws JsonParseException {
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final GTAuthor gta = new GTAuthor();
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gta.setAuthor(getAuthor(json));
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gta.setMerged(getMerged(json));
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gta.setCoAuthors(getCoAuthors(json));
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return gta;
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}
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private CoAuthors getCoAuthors(final JsonElement json) {
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final JsonObject obj = json.getAsJsonObject();
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if (!obj.has(COAUTHOR)) return null;
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return new CoAuthors(Lists.newArrayList(Iterables.transform(obj.get(COAUTHOR).getAsJsonArray(),
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new Function<JsonElement, CoAuthor>() {
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@Override
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public CoAuthor apply(final JsonElement in) {
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final CoAuthor a = new CoAuthor(getAuthor(in));
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final JsonObject jsonObject = in.getAsJsonObject();
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if (jsonObject.has(ANCHOR_ID)) {
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a.setAnchorId(jsonObject.get(ANCHOR_ID).getAsString());
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}
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return a;
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}
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})));
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}
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private Author getAuthor(final JsonElement json) {
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final Author a = new Author();
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a.setCoauthors(null);
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a.setMatches(null);
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final JsonObject jso = json.getAsJsonObject();
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a.setId(jso.has(ID) ? jso.get(ID).getAsString() : null);
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final JsonObject jsonObject = json.getAsJsonObject();
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if (jsonObject.has(METADATA)) {
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final JsonObject m = jsonObject.get(METADATA).getAsJsonObject();
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a.setFullname(getValue(m, FULLNAME));
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a.setFirstname(getValue(m, FIRSTNAME));
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a.setSecondnames(getValues(m, SECONDNAMES));
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}
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return a;
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}
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private Authors getMerged(final JsonElement json) {
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final JsonObject obj = json.getAsJsonObject();
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if (!obj.has(MERGEDPERSON)) return null;
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return new Authors(Lists.newArrayList(Iterables.transform(obj.get(MERGEDPERSON).getAsJsonArray(),
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new Function<JsonElement, Author>() {
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@Override
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public Author apply(final JsonElement in) {
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return getAuthor(in);
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}
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})));
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}
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private String getValues(final JsonObject m, final String fieldName) {
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return m.has(fieldName) ? Joiner.on(" ").join(Iterables.transform(m.get(fieldName).getAsJsonArray(), new Function<JsonElement, String>() {
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@Override
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public String apply(final JsonElement in) {
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return in.getAsJsonObject().get(VALUE).getAsString();
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}
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})) : null;
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}
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private String getValue(final JsonObject m, final String fieldName) {
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return m.has(fieldName) ? m.get(fieldName).getAsJsonObject().get(VALUE).getAsString() : null;
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}
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}
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