/**
* Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.master.exchange.impl;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.threeten.bp.Instant;
import com.google.common.base.Supplier;
import com.opengamma.DataNotFoundException;
import com.opengamma.core.change.BasicChangeManager;
import com.opengamma.core.change.ChangeManager;
import com.opengamma.core.change.ChangeType;
import com.opengamma.id.ObjectId;
import com.opengamma.id.ObjectIdSupplier;
import com.opengamma.id.ObjectIdentifiable;
import com.opengamma.id.UniqueId;
import com.opengamma.id.VersionCorrection;
import com.opengamma.master.SimpleAbstractInMemoryMaster;
import com.opengamma.master.exchange.ExchangeDocument;
import com.opengamma.master.exchange.ExchangeHistoryRequest;
import com.opengamma.master.exchange.ExchangeHistoryResult;
import com.opengamma.master.exchange.ExchangeMaster;
import com.opengamma.master.exchange.ExchangeSearchRequest;
import com.opengamma.master.exchange.ExchangeSearchResult;
import com.opengamma.master.exchange.ManageableExchange;
import com.opengamma.util.ArgumentChecker;
import com.opengamma.util.paging.Paging;
/**
* A simple, in-memory implementation of {@code ExchangeMaster}.
* <p>
* This master does not support versioning of exchanges.
* <p>
* This implementation does not copy stored elements, making it thread-hostile.
* As such, this implementation is currently most useful for testing scenarios.
*/
public class InMemoryExchangeMaster
extends SimpleAbstractInMemoryMaster<ExchangeDocument>
implements ExchangeMaster {
/**
* The default scheme used for each {@link ObjectId}.
*/
public static final String DEFAULT_OID_SCHEME = "MemExg";
/**
* Creates an instance.
*/
public InMemoryExchangeMaster() {
this(new ObjectIdSupplier(DEFAULT_OID_SCHEME));
}
/**
* Creates an instance specifying the change manager.
*
* @param changeManager the change manager, not null
*/
public InMemoryExchangeMaster(final ChangeManager changeManager) {
this(new ObjectIdSupplier(DEFAULT_OID_SCHEME), changeManager);
}
/**
* Creates an instance specifying the supplier of object identifiers.
*
* @param objectIdSupplier the supplier of object identifiers, not null
*/
public InMemoryExchangeMaster(final Supplier<ObjectId> objectIdSupplier) {
this(objectIdSupplier, new BasicChangeManager());
}
/**
* Creates an instance specifying the supplier of object identifiers and change manager.
*
* @param objectIdSupplier the supplier of object identifiers, not null
* @param changeManager the change manager, not null
*/
public InMemoryExchangeMaster(final Supplier<ObjectId> objectIdSupplier, final ChangeManager changeManager) {
super(objectIdSupplier, changeManager);
}
//-------------------------------------------------------------------------
@Override
protected void validateDocument(ExchangeDocument document) {
ArgumentChecker.notNull(document, "document");
ArgumentChecker.notNull(document.getExchange(), "document.exchange");
}
//-------------------------------------------------------------------------
@Override
public ExchangeSearchResult search(final ExchangeSearchRequest request) {
ArgumentChecker.notNull(request, "request");
final List<ExchangeDocument> list = new ArrayList<ExchangeDocument>();
for (ExchangeDocument doc : _store.values()) {
if (request.matches(doc)) {
list.add(doc);
}
}
Collections.sort(list, request.getSortOrder());
ExchangeSearchResult result = new ExchangeSearchResult();
result.setPaging(Paging.of(request.getPagingRequest(), list));
result.getDocuments().addAll(request.getPagingRequest().select(list));
return result;
}
//-------------------------------------------------------------------------
@Override
public ExchangeDocument get(final UniqueId uniqueId) {
return get(uniqueId, VersionCorrection.LATEST);
}
//-------------------------------------------------------------------------
@Override
public ExchangeDocument get(final ObjectIdentifiable objectId, final VersionCorrection versionCorrection) {
ArgumentChecker.notNull(objectId, "objectId");
ArgumentChecker.notNull(versionCorrection, "versionCorrection");
final ExchangeDocument document = _store.get(objectId.getObjectId());
if (document == null) {
throw new DataNotFoundException("Exchange not found: " + objectId);
}
return document;
}
//-------------------------------------------------------------------------
@Override
public ExchangeDocument add(final ExchangeDocument document) {
ArgumentChecker.notNull(document, "document");
ArgumentChecker.notNull(document.getExchange(), "document.exchange");
final ObjectId objectId = _objectIdSupplier.get();
final UniqueId uniqueId = objectId.atVersion("");
final ManageableExchange exchange = document.getExchange().clone();
exchange.setUniqueId(uniqueId);
document.setUniqueId(uniqueId);
final Instant now = Instant.now();
final ExchangeDocument doc = new ExchangeDocument(exchange);
doc.setVersionFromInstant(now);
doc.setCorrectionFromInstant(now);
_store.put(objectId, doc);
_changeManager.entityChanged(ChangeType.ADDED, objectId, doc.getVersionFromInstant(), doc.getVersionToInstant(), now);
return doc;
}
//-------------------------------------------------------------------------
@Override
public ExchangeDocument update(final ExchangeDocument document) {
ArgumentChecker.notNull(document, "document");
ArgumentChecker.notNull(document.getUniqueId(), "document.uniqueId");
ArgumentChecker.notNull(document.getExchange(), "document.exchange");
final UniqueId uniqueId = document.getUniqueId();
final Instant now = Instant.now();
final ExchangeDocument storedDocument = _store.get(uniqueId.getObjectId());
if (storedDocument == null) {
throw new DataNotFoundException("Exchange not found: " + uniqueId);
}
document.setVersionFromInstant(now);
document.setVersionToInstant(null);
document.setCorrectionFromInstant(now);
document.setCorrectionToInstant(null);
document.setUniqueId(uniqueId.withVersion(""));
if (_store.replace(uniqueId.getObjectId(), storedDocument, document) == false) {
throw new IllegalArgumentException("Concurrent modification");
}
_changeManager.entityChanged(ChangeType.CHANGED, document.getObjectId(), storedDocument.getVersionFromInstant(), document.getVersionToInstant(), now);
return document;
}
//-------------------------------------------------------------------------
@Override
public void remove(final ObjectIdentifiable objectIdentifiable) {
ArgumentChecker.notNull(objectIdentifiable, "objectIdentifiable");
if (_store.remove(objectIdentifiable.getObjectId()) == null) {
throw new DataNotFoundException("Exchange not found: " + objectIdentifiable);
}
_changeManager.entityChanged(ChangeType.REMOVED, objectIdentifiable.getObjectId(), null, null, Instant.now());
}
//-------------------------------------------------------------------------
@Override
public ExchangeDocument correct(final ExchangeDocument document) {
return update(document);
}
//-------------------------------------------------------------------------
@Override
public ExchangeHistoryResult history(final ExchangeHistoryRequest request) {
ArgumentChecker.notNull(request, "request");
ArgumentChecker.notNull(request.getObjectId(), "request.objectId");
final ExchangeHistoryResult result = new ExchangeHistoryResult();
final ExchangeDocument doc = get(request.getObjectId(), VersionCorrection.LATEST);
if (doc != null) {
result.getDocuments().add(doc);
}
result.setPaging(Paging.ofAll(result.getDocuments()));
return result;
}
}