Java tutorial
/** * Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies * * Please see distribution for license. */ package com.opengamma.web.exchange; import java.net.URI; import java.util.Iterator; import java.util.List; import javax.ws.rs.Consumes; import javax.ws.rs.FormParam; import javax.ws.rs.GET; import javax.ws.rs.POST; import javax.ws.rs.Path; import javax.ws.rs.PathParam; import javax.ws.rs.Produces; import javax.ws.rs.QueryParam; import javax.ws.rs.core.Context; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.MultivaluedMap; import javax.ws.rs.core.Response; import javax.ws.rs.core.Response.Status; import javax.ws.rs.core.UriBuilder; import javax.ws.rs.core.UriInfo; import org.apache.commons.lang.StringUtils; import org.joda.beans.impl.flexi.FlexiBean; import com.opengamma.DataNotFoundException; import com.opengamma.id.ExternalId; import com.opengamma.id.ExternalIdBundle; import com.opengamma.id.ObjectId; import com.opengamma.id.UniqueId; 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.ExchangeSearchSortOrder; import com.opengamma.master.exchange.ManageableExchange; import com.opengamma.util.paging.PagingRequest; import com.opengamma.web.WebPaging; /** * RESTful resource for all exchanges. * <p> * The exchanges resource represents the whole of a exchange master. */ @Path("/exchanges") public class WebExchangesResource extends AbstractWebExchangeResource { /** * Creates the resource. * @param exchangeMaster the exchange master, not null */ public WebExchangesResource(final ExchangeMaster exchangeMaster) { super(exchangeMaster); } //------------------------------------------------------------------------- @GET @Produces(MediaType.TEXT_HTML) public String getHTML(@QueryParam("pgIdx") Integer pgIdx, @QueryParam("pgNum") Integer pgNum, @QueryParam("pgSze") Integer pgSze, @QueryParam("sort") String sort, @QueryParam("name") String name, @QueryParam("exchangeId") List<String> exchangeIdStrs, @Context UriInfo uriInfo) { PagingRequest pr = buildPagingRequest(pgIdx, pgNum, pgSze); ExchangeSearchSortOrder so = buildSortOrder(sort, ExchangeSearchSortOrder.NAME_ASC); FlexiBean out = createSearchResultData(pr, so, name, exchangeIdStrs, uriInfo); return getFreemarker().build(HTML_DIR + "exchanges.ftl", out); } @GET @Produces(MediaType.APPLICATION_JSON) public String getJSON(@QueryParam("pgIdx") Integer pgIdx, @QueryParam("pgNum") Integer pgNum, @QueryParam("pgSze") Integer pgSze, @QueryParam("sort") String sort, @QueryParam("name") String name, @QueryParam("exchangeId") List<String> exchangeIdStrs, @Context UriInfo uriInfo) { PagingRequest pr = buildPagingRequest(pgIdx, pgNum, pgSze); ExchangeSearchSortOrder so = buildSortOrder(sort, ExchangeSearchSortOrder.NAME_ASC); FlexiBean out = createSearchResultData(pr, so, name, exchangeIdStrs, uriInfo); return getFreemarker().build(JSON_DIR + "exchanges.ftl", out); } private FlexiBean createSearchResultData(PagingRequest pr, ExchangeSearchSortOrder so, String name, List<String> exchangeIdStrs, UriInfo uriInfo) { FlexiBean out = createRootData(); ExchangeSearchRequest searchRequest = new ExchangeSearchRequest(); searchRequest.setPagingRequest(pr); searchRequest.setSortOrder(so); searchRequest.setName(StringUtils.trimToNull(name)); MultivaluedMap<String, String> query = uriInfo.getQueryParameters(); for (int i = 0; query.containsKey("idscheme." + i) && query.containsKey("idvalue." + i); i++) { ExternalId id = ExternalId.of(query.getFirst("idscheme." + i), query.getFirst("idvalue." + i)); searchRequest.addExternalId(id); } for (String exchangeIdStr : exchangeIdStrs) { searchRequest.addObjectId(ObjectId.parse(exchangeIdStr)); } out.put("searchRequest", searchRequest); if (data().getUriInfo().getQueryParameters().size() > 0) { ExchangeSearchResult searchResult = data().getExchangeMaster().search(searchRequest); out.put("searchResult", searchResult); out.put("paging", new WebPaging(searchResult.getPaging(), uriInfo)); } return out; } //------------------------------------------------------------------------- @POST @Consumes(MediaType.APPLICATION_FORM_URLENCODED) @Produces(MediaType.TEXT_HTML) public Response postHTML(@FormParam("name") String name, @FormParam("idscheme") String idScheme, @FormParam("idvalue") String idValue, @FormParam("regionscheme") String regionScheme, @FormParam("regionvalue") String regionValue) { name = StringUtils.trimToNull(name); idScheme = StringUtils.trimToNull(idScheme); idValue = StringUtils.trimToNull(idValue); regionScheme = StringUtils.trimToNull(regionScheme); regionValue = StringUtils.trimToNull(regionValue); if (name == null || idScheme == null || idValue == null) { FlexiBean out = createRootData(); if (name == null) { out.put("err_nameMissing", true); } if (idScheme == null) { out.put("err_idschemeMissing", true); } if (idValue == null) { out.put("err_idvalueMissing", true); } if (regionScheme == null) { out.put("err_regionschemeMissing", true); } if (regionValue == null) { out.put("err_regionvalueMissing", true); } String html = getFreemarker().build(HTML_DIR + "exchanges-add.ftl", out); return Response.ok(html).build(); } URI uri = createExchange(name, idScheme, idValue, regionScheme, regionValue); return Response.seeOther(uri).build(); } @POST @Consumes(MediaType.APPLICATION_FORM_URLENCODED) @Produces(MediaType.APPLICATION_JSON) public Response postJSON(@FormParam("name") String name, @FormParam("idscheme") String idScheme, @FormParam("idvalue") String idValue, @FormParam("regionscheme") String regionScheme, @FormParam("regionvalue") String regionValue) { name = StringUtils.trimToNull(name); idScheme = StringUtils.trimToNull(idScheme); idValue = StringUtils.trimToNull(idValue); regionScheme = StringUtils.trimToNull(regionScheme); regionValue = StringUtils.trimToNull(regionValue); if (name == null || idScheme == null || idValue == null) { return Response.status(Status.BAD_REQUEST).build(); } URI uri = createExchange(name, idScheme, idValue, regionScheme, regionValue); return Response.created(uri).build(); } private URI createExchange(String name, String idScheme, String idValue, String regionScheme, String regionValue) { ExternalId id = ExternalId.of(idScheme, idValue); ExternalId region = ExternalId.of(regionScheme, regionValue); ManageableExchange exchange = new ManageableExchange(ExternalIdBundle.of(id), name, ExternalIdBundle.of(region), null); ExchangeDocument doc = new ExchangeDocument(exchange); ExchangeDocument added = data().getExchangeMaster().add(doc); URI uri = data().getUriInfo().getAbsolutePathBuilder().path(added.getUniqueId().toLatest().toString()) .build(); return uri; } //------------------------------------------------------------------------- @Path("{exchangeId}") public WebExchangeResource findExchange(@PathParam("exchangeId") String idStr) { data().setUriExchangeId(idStr); UniqueId oid = UniqueId.parse(idStr); try { ExchangeDocument doc = data().getExchangeMaster().get(oid); data().setExchange(doc); } catch (DataNotFoundException ex) { ExchangeHistoryRequest historyRequest = new ExchangeHistoryRequest(oid); historyRequest.setPagingRequest(PagingRequest.ONE); ExchangeHistoryResult historyResult = data().getExchangeMaster().history(historyRequest); if (historyResult.getDocuments().size() == 0) { return null; } data().setExchange(historyResult.getFirstDocument()); } return new WebExchangeResource(this); } //------------------------------------------------------------------------- /** * Creates the output root data. * @return the output root data, not null */ protected FlexiBean createRootData() { FlexiBean out = super.createRootData(); ExchangeSearchRequest searchRequest = new ExchangeSearchRequest(); out.put("searchRequest", searchRequest); return out; } //------------------------------------------------------------------------- /** * Builds a URI for exchanges. * @param data the data, not null * @return the URI, not null */ public static URI uri(WebExchangeData data) { return uri(data, null); } /** * Builds a URI for exchanges. * @param data the data, not null * @param identifiers the identifiers to search for, may be null * @return the URI, not null */ public static URI uri(WebExchangeData data, ExternalIdBundle identifiers) { UriBuilder builder = data.getUriInfo().getBaseUriBuilder().path(WebExchangesResource.class); if (identifiers != null) { Iterator<ExternalId> it = identifiers.iterator(); for (int i = 0; it.hasNext(); i++) { ExternalId id = it.next(); builder.queryParam("idscheme." + i, id.getScheme().getName()); builder.queryParam("idvalue." + i, id.getValue()); } } return builder.build(); } }