Mercurial > dive4elements > framework
view artifact-database/src/main/java/de/intevation/artifactdatabase/rest/CollectionResource.java @ 421:4213dd6ca169
Fix queries for finding a user
artifacts/trunk@5383 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Bjoern Ricks <bjoern.ricks@intevation.de> |
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date | Fri, 07 Sep 2012 13:01:43 +0000 |
parents | e92d5944fe4b |
children |
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/* * Copyright (c) 2011 by Intevation GmbH * * This program is free software under the LGPL (>=v2.1) * Read the file LGPL.txt coming with the software for details * or visit http://www.gnu.org/licenses/ if it does not exist. */ package de.intevation.artifactdatabase.rest; import de.intevation.artifacts.ArtifactDatabase; import de.intevation.artifacts.ArtifactDatabaseException; import de.intevation.artifacts.CallMeta; import de.intevation.artifacts.common.ArtifactNamespaceContext; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.artifactdatabase.ArtifactDatabaseImpl; import java.io.IOException; import javax.xml.xpath.XPathConstants; import org.apache.log4j.Logger; import org.restlet.data.MediaType; import org.restlet.data.Status; import org.restlet.ext.xml.DomRepresentation; import org.restlet.representation.EmptyRepresentation; import org.restlet.representation.Representation; import org.restlet.Request; import org.restlet.Response; import org.w3c.dom.Document; import org.w3c.dom.Node; /** * @author <a href="mailto:ingo.weinzierl@intevation">Ingo Weinzierl</a> */ public class CollectionResource extends BaseResource { /** The logger that is used in this class.*/ private static Logger logger = Logger.getLogger(CollectionResource.class); /** server URL where to reach the resource.*/ public static final String PATH = "/collection/{uuid}"; /** * XPath to figure out the type of action (feed, advance) via the * incoming POST request. */ public static final String XPATH_ACTION = "/art:action/art:type/@name"; /** * XPath to figure out the identifier of the artifact described in the * action. */ public static final String XPATH_ARTIFACT = "/art:action/art:type/art:artifact/@uuid"; /** Error message if no action was given.*/ public static final String NO_ACTION_MSG = "no action given"; /** Error message if a unknown action was given.*/ public static final String NO_SUCH_ACTION_MSG = "no such action"; /** Action name for deleting a collection.*/ public static final String ACTION_DELETE = "delete"; /** Action name for describing the collection.*/ public static final String ACTION_DESCRIBE = "describe"; /** Action name for retrieving the attribute of a collection.*/ public static final String ACTION_GET_ATTRIBUTE = "getattribute"; /** Action name for retrieving the attributes of an artifact stored in the * collection.*/ public static final String ACTION_GET_ITEM_ATTRIBUTE = "getitemattribute"; /** Action name for setting the attribute of a collection.*/ public static final String ACTION_SET_ATTRIBUTE = "setattribute"; /** Action name for setting the attribute for an artifact stored in the * collection.*/ public static final String ACTION_SET_ITEM_ATTRIBUTE = "setitemattribute"; /** Action name for adding a new artifact to the collection.*/ public static final String ACTION_ADD_ARTIFACT = "addartifact"; /** Action name for removing an artifact from the collection.*/ public static final String ACTION_REMOVE_ARTIFACT = "removeartifact"; /** Action name for listing the artifacts of the collection.*/ public static final String ACTION_LIST_ARTIFACTS = "listartifacts"; /** Action name for setting the ttl of a collection.*/ public static final String ACTION_SET_TTL = "settimetolive"; /** Action name for setting the name of a collection.*/ public static final String ACTION_SET_NAME = "setname"; /** * Method to figure out which POST action was triggered and perform this * operation on the collection specified by 'identifier' and found in the * artifact database 'db'. * * @param identifier The identifier of the collection. * @param action The action to be performed. * @param source The input document to further parameterize the operation. * @param db The artifact database where to find the collection. * * @return The representation produced by the performed action. */ protected Representation dispatch( String identifier, String action, Document source, ArtifactDatabase db ) { Document out = null; try { CallMeta meta = getCallMeta(); if (action.equals(ACTION_DELETE)) { logger.info("Delete collection '" + identifier + "'"); out = db.deleteCollection(identifier, getCallMeta()); } else if (action.equals(ACTION_DESCRIBE)) { logger.info("Describe collection '" + identifier + "'"); out = db.describeCollection(identifier, meta); } else if (action.equals(ACTION_ADD_ARTIFACT)) { String art = getArtifactIdentifier(source); logger.info("Add artifact '" + art + "' to collection."); out = db.addCollectionArtifact(identifier, art, source, meta); } else if (action.equals(ACTION_REMOVE_ARTIFACT)) { String art = getArtifactIdentifier(source); logger.info("Remove artifact '" + art + "' from collection."); out = db.removeCollectionArtifact(identifier, art, meta); } else if (action.equals(ACTION_LIST_ARTIFACTS)) { logger.info("List artifacts of collection '" + identifier +"'"); out = db.listCollectionArtifacts(identifier, meta); } else if (action.equals(ACTION_SET_ATTRIBUTE)) { String art = getArtifactIdentifier(source); logger.info("Set attribute for collection '" + identifier + "'"); Document attr = getCollectionAttribute(source); out = db.setCollectionAttribute(identifier, meta, attr); } else if (action.equals(ACTION_SET_ITEM_ATTRIBUTE)) { String art = getArtifactIdentifier(source); logger.info("Set attribute for artifact '" + art + "'"); out = db.setCollectionItemAttribute(identifier, art, source, meta); } else if (action.equals(ACTION_GET_ATTRIBUTE)) { String art = getArtifactIdentifier(source); logger.info("Retrieve attribute of collection '" + identifier + "'"); out = db.getCollectionAttribute(identifier, meta); } else if (action.equals(ACTION_GET_ITEM_ATTRIBUTE)) { String art = getArtifactIdentifier(source); logger.info("Retrieve attribute of artifact '" + art + "'"); out = db.getCollectionItemAttribute(identifier, art, meta); } else if (action.equals(ACTION_SET_TTL)) { out = db.setCollectionTTL(identifier, source, meta); } else if (action.equals(ACTION_SET_NAME)) { out = db.setCollectionName(identifier, source, meta); } else { throw new ArtifactDatabaseException(NO_SUCH_ACTION_MSG); } } catch (ArtifactDatabaseException adbe) { logger.warn(adbe.getLocalizedMessage(), adbe); Response response = getResponse(); response.setStatus( Status.CLIENT_ERROR_BAD_REQUEST, adbe.getMessage()); return new EmptyRepresentation(); } return new DomRepresentation(MediaType.APPLICATION_XML, out); } @Override protected Representation innerPost(Representation requestRepr) { Document input = null; try { DomRepresentation in = new DomRepresentation(requestRepr); in.setNamespaceAware(true); input = in.getDocument(); } catch (IOException ioe) { logger.error(ioe.getLocalizedMessage(), ioe); Response response = getResponse(); response.setStatus(Status.CLIENT_ERROR_BAD_REQUEST, ioe); return new EmptyRepresentation(); } String action = XMLUtils.xpathString( input, XPATH_ACTION, ArtifactNamespaceContext.INSTANCE); if (action == null || action.length() == 0) { Response response = getResponse(); response.setStatus( Status.CLIENT_ERROR_BAD_REQUEST, NO_ACTION_MSG); return new EmptyRepresentation(); } Request request = getRequest(); String identifier = (String) request.getAttributes().get("uuid"); ArtifactDatabase db = getArtifactDatabase(); return dispatch(identifier, action, input, db); } /** * Retrieves the identifier of the artifact used in the action. * * @param source The incoming document that describes the operation. * * @return the uuid of the artifact described in the document. */ protected String getArtifactIdentifier(Document source) { return XMLUtils.xpathString( source, XPATH_ARTIFACT, ArtifactNamespaceContext.INSTANCE); } /** * Returns the attribute for a collection of the incoming request document. * * @param request The request document. * * @return the contained attribute as document. */ protected Document getCollectionAttribute(Document request) { Node attr = (Node) XMLUtils.xpath( request, ArtifactDatabaseImpl.XPATH_COLLECTION_ATTRIBUTE, XPathConstants.NODE, ArtifactNamespaceContext.INSTANCE); Document newAttr = XMLUtils.newDocument(); if (attr == null) { logger.error("Collection attribute document not found!"); return newAttr; } newAttr.appendChild(newAttr.importNode(attr, true)); return newAttr; } }