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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.query.textserialize.item;
import com.yahoo.prelude.query.IndexedItem;
import com.yahoo.prelude.query.Item;
import com.yahoo.prelude.query.TaggableItem;
import com.yahoo.search.query.textserialize.serializer.DispatchForm;
import com.yahoo.search.query.textserialize.serializer.ItemIdMapper;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
/**
* @author Tony Vaagenes
*/
public class ItemInitializer {
private static final String indexProperty = "index";
private static final String idProperty = "id";
private static final String significanceProperty = "significance";
private static final String uniqueIdProperty = "uniqueId";
private static final String weightProperty = "weight";
public static void initialize(Item item, ItemArguments arguments, ItemContext itemContext) {
storeIdInContext(item, arguments.properties, itemContext);
Object weight = arguments.properties.get(weightProperty);
if (weight != null) {
TypeCheck.ensureInstanceOf(weight, Number.class);
item.setWeight(((Number)weight).intValue());
}
if (item instanceof TaggableItem) {
initializeTaggableItem((TaggableItem)item, arguments, itemContext);
}
if (item instanceof IndexedItem) {
initializeIndexedItem((IndexedItem)item, arguments, itemContext);
}
}
private static void storeIdInContext(Item item, Map<?, ?> properties, ItemContext itemContext) {
Object id = properties.get("id");
if (id != null) {
TypeCheck.ensureInstanceOf(id, String.class);
itemContext.setItemId((String) id, item);
}
}
private static void initializeTaggableItem(TaggableItem item, ItemArguments arguments, ItemContext itemContext) {
Object connectivity = arguments.properties.get("connectivity");
if (connectivity != null) {
storeConnectivityInContext(item, connectivity, itemContext);
}
Object significance = arguments.properties.get(significanceProperty);
if (significance != null) {
TypeCheck.ensureInstanceOf(significance, Number.class);
item.setSignificance(((Number)significance).doubleValue());
}
Object uniqueId = arguments.properties.get(uniqueIdProperty);
if (uniqueId != null) {
TypeCheck.ensureInstanceOf(uniqueId, Number.class);
item.setUniqueID(((Number)uniqueId).intValue());
}
}
private static void initializeIndexedItem(IndexedItem indexedItem, ItemArguments arguments, ItemContext itemContext) {
Object index = arguments.properties.get(indexProperty);
if (index != null) {
TypeCheck.ensureInstanceOf(index, String.class);
indexedItem.setIndexName((String) index);
}
}
private static void storeConnectivityInContext(TaggableItem item, Object connectivity, ItemContext itemContext) {
TypeCheck.ensureInstanceOf(connectivity, List.class);
List<?> connectivityList = (List<?>) connectivity;
if (connectivityList.size() != 2) {
throw new IllegalArgumentException("Expected two elements for connectivity, got " + connectivityList.size());
}
Object id = connectivityList.get(0);
Object strength = connectivityList.get(1);
TypeCheck.ensureInstanceOf(id, String.class);
TypeCheck.ensureInstanceOf(strength, Number.class);
itemContext.setConnectivity(item, (String)id, ((Number)strength).doubleValue());
}
public static void initializeForm(DispatchForm form, Item item, ItemIdMapper itemIdMapper) {
if (item.getWeight() != Item.DEFAULT_WEIGHT) {
form.setProperty(weightProperty, item.getWeight());
}
if (item instanceof IndexedItem) {
initializeIndexedForm(form, (IndexedItem) item);
}
if (item instanceof TaggableItem) {
initializeTaggableForm(form, (TaggableItem) item, itemIdMapper);
}
initializeFormWithIdIfConnected(form, item, itemIdMapper);
}
private static void initializeFormWithIdIfConnected(DispatchForm form, Item item, ItemIdMapper itemIdMapper) {
if (item.hasConnectivityBackLink()) {
form.setProperty(idProperty, itemIdMapper.getId(item));
}
}
@SuppressWarnings("unchecked")
private static void initializeTaggableForm(DispatchForm form, TaggableItem taggableItem, ItemIdMapper itemIdMapper) {
Item connectedItem = taggableItem.getConnectedItem();
if (connectedItem != null) {
form.setProperty("connectivity",
Arrays.asList(itemIdMapper.getId(connectedItem), taggableItem.getConnectivity()));
}
if (taggableItem.hasExplicitSignificance()) {
form.setProperty(significanceProperty, taggableItem.getSignificance());
}
if (taggableItem.hasUniqueID()) {
form.setProperty(uniqueIdProperty, taggableItem.getUniqueID());
}
}
private static void initializeIndexedForm(DispatchForm form, IndexedItem item) {
String index = item.getIndexName();
if (!index.isEmpty()) {
form.setProperty(indexProperty, index);
}
}
}
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