com.opengamma.web.exchange.WebExchangeVersionResource.java Source code

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Here is the source code for com.opengamma.web.exchange.WebExchangeVersionResource.java

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/**
 * 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 javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.EntityTag;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.ResponseBuilder;

import org.apache.commons.lang.StringUtils;
import org.joda.beans.impl.flexi.FlexiBean;

import com.opengamma.id.UniqueId;
import com.opengamma.master.exchange.ExchangeDocument;

/**
 * RESTful resource for a version of a exchange.
 */
@Path("/exchanges/{exchangeId}/versions/{versionId}")
@Produces(MediaType.TEXT_HTML)
public class WebExchangeVersionResource extends AbstractWebExchangeResource {

    /**
     * Creates the resource.
     * @param parent  the parent resource, not null
     */
    public WebExchangeVersionResource(final AbstractWebExchangeResource parent) {
        super(parent);
    }

    //-------------------------------------------------------------------------
    @GET
    public String getHTML() {
        FlexiBean out = createRootData();
        return getFreemarker().build(HTML_DIR + "exchangeversion.ftl", out);
    }

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Response getJSON(@Context Request request) {
        EntityTag etag = new EntityTag(data().getVersioned().getUniqueId().toString());
        ResponseBuilder builder = request.evaluatePreconditions(etag);
        if (builder != null) {
            return builder.build();
        }
        FlexiBean out = createRootData();
        String json = getFreemarker().build(JSON_DIR + "exchange.ftl", out);
        return Response.ok(json).tag(etag).build();
    }

    //-------------------------------------------------------------------------
    /**
     * Creates the output root data.
     * @return the output root data, not null
     */
    protected FlexiBean createRootData() {
        FlexiBean out = super.createRootData();
        ExchangeDocument latestDoc = data().getExchange();
        ExchangeDocument versionedExchange = data().getVersioned();
        out.put("latestExchangeDoc", latestDoc);
        out.put("latestExchange", latestDoc.getExchange());
        out.put("exchangeDoc", versionedExchange);
        out.put("exchange", versionedExchange.getExchange());
        out.put("deleted", !latestDoc.isLatest());
        return out;
    }

    //-------------------------------------------------------------------------
    /**
     * Builds a URI for this resource.
     * @param data  the data, not null
     * @return the URI, not null
     */
    public static URI uri(final WebExchangeData data) {
        return uri(data, null);
    }

    /**
     * Builds a URI for this resource.
     * @param data  the data, not null
     * @param overrideVersionId  the override version id, null uses information from data
     * @return the URI, not null
     */
    public static URI uri(final WebExchangeData data, final UniqueId overrideVersionId) {
        String exchangeId = data.getBestExchangeUriId(null);
        String versionId = StringUtils
                .defaultString(overrideVersionId != null ? overrideVersionId.getVersion() : data.getUriVersionId());
        return data.getUriInfo().getBaseUriBuilder().path(WebExchangeVersionResource.class).build(exchangeId,
                versionId);
    }

}