Metacat

import java.io.PrintWriter;

import org.dataone.service.types.AccessPolicy;

                    	assertRelation(objectId);

    private boolean assertRelation(String id) throws InvalidToken, ServiceFailure, NotAuthorized, NotFound, InvalidRequest, NotImplemented {

    /**

     * set the access perms on a document

     * @throws Exception

     */

    protected void setaccess() throws Exception

    {

        try

        {

            String guid = params.get("guid")[0];

            Identifier id = new Identifier();

            id.setValue(guid);

            String accesspolicy = params.get("accesspolicy")[0];

            AccessPolicy accessPolicy = (AccessPolicy) deserializeServiceType(AccessPolicy.class, new ByteArrayInputStream(accesspolicy.getBytes("UTF-8")));

            CNodeService.getInstance().setAccessPolicy(session, id, accessPolicy);

        }

        catch(Exception e)

        {

            response.setStatus(500);

            printError("Error setting access in D1ResourceHandler: " + e.getClass() + ": " + e.getMessage(), response);

            throw e;

        }

    }

    /**

     * Earthgrid API > Query Service > Query Function : translates ecogrid query document to metacat query 

     * then calls DBQuery > createResultDocument function and then again translate resultset to ecogrid resultset

     * 

     * NOTE:

     *      This is the only method that uses EcoGrid classes for its implementation.  

     *      It does so because it takes an EcoGrid Query as input, and outputs an

     *      EcoGrid ResultSet document.  These documents are parsed by the auto-generated

     *      EcoGrid classes from axis, and so we link to them here rather than re-inventing them.

     *      This creates a circular dependency, because the Metacat classes are needed

     *      to build the EcoGrid implementation, and the EcoGrid jars are needed to build this query()

     *      method.  This circularity could be resolved by moving the EcoGrid classes

     *      to Metacat directly.  As we transition away from EcoGrid SOAP methods in

     *      favor of these REST interfaces, this circular dependency can be eliminated.

     *        

     * @throws Exception

     */

    private void query() throws Exception {

        /*  This block commented out because of the EcoGrid circular dependency.

         *  For now, query will not be supported until the circularity can be

         *  resolved, probably by moving the ecogrid query syntax transformers

         *  directly into the Metacat codebase.  MBJ 2010-02-03

        try {

            EcogridQueryParser parser = new EcogridQueryParser(request

                    .getReader());

            parser.parseXML();

            QueryType queryType = parser.getEcogridQuery();

            EcogridJavaToMetacatJavaQueryTransformer queryTransformer = 

                new EcogridJavaToMetacatJavaQueryTransformer();

            QuerySpecification metacatQuery = queryTransformer

                    .transform(queryType);

            DBQuery metacat = new DBQuery();

            boolean useXMLIndex = (new Boolean(PropertyService

                    .getProperty("database.usexmlindex"))).booleanValue();

            String xmlquery = "query"; // we don't care the query in resultset,

            // the query can be anything

            PrintWriter out = null; // we don't want metacat result, so set out null

            // parameter: queryspecification, user, group, usingIndexOrNot

            StringBuffer result = metacat.createResultDocument(xmlquery,

                    metacatQuery, out, username, groupNames, useXMLIndex);

            // create result set transfer       

            String saxparser = PropertyService.getProperty("xml.saxparser");

            MetacatResultsetParser metacatResultsetParser = new MetacatResultsetParser(

                    new StringReader(result.toString()), saxparser, queryType

                            .getNamespace().get_value());

            ResultsetType records = metacatResultsetParser.getEcogridResult();

            System.out

                    .println(EcogridResultsetTransformer.toXMLString(records));

            response.setContentType("text/xml");

            out = response.getWriter();

            out.print(EcogridResultsetTransformer.toXMLString(records));

        } catch (Exception e) {

            e.printStackTrace();

        }*/

        response.setContentType("text/xml");

        response.setStatus(501);

        PrintWriter out = response.getWriter();

        out.print("<error>Query operation not yet supported by Metacat.</error>");

        out.close();

    }