de.kp.ames.web.function.scm.ScmServiceImpl.java Source code

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Here is the source code for de.kp.ames.web.function.scm.ScmServiceImpl.java

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package de.kp.ames.web.function.scm;
/**
 * This Java module is part of the
 *  Application Developer Framework
 *
 *  Project: AMES-Web-Service
 *  Package: de.kp.ames.web.function.scm
 *  Module: ScmServiceImpl
 *  @author krusche@dr-kruscheundpartner.de
 *
 * Add your semantic annotations within the SemanticAssist tags and
 * mark them with a leading hashtag #:
 *
 * <SemanticAssist>
 *     #function #scm #service #web
 * </SemanticAssist>
 *
 */

/**
 *   Copyright 2012 Dr. Krusche & Partner PartG
 *
 *   AMES-Web-Service is free software: you can redistribute it and/or 
 *   modify it under the terms of the GNU General Public License 
 *   as published by the Free Software Foundation, either version 3 of 
 *   the License, or (at your option) any later version.
 *
 *   AMES- Web-Service is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 * 
 *  See the GNU General Public License for more details. 
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this software. If not, see <http://www.gnu.org/licenses/>.
 *
 */

import org.json.JSONArray;

import de.kp.ames.web.function.BusinessImpl;
import de.kp.ames.web.http.RequestContext;

public class ScmServiceImpl extends BusinessImpl {

    public ScmServiceImpl() {
        super();
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * de.kp.ames.web.core.service.ServiceImpl#processRequest(de.kp.ames.web
     * .http.RequestContext)
     */
    public void processRequest(RequestContext ctx) {

        String methodName = this.method.getName();
        if (!(methodName.equals("get") || methodName.equals("apply"))) {
            this.sendBadRequest(ctx, new Throwable("[ScmServiceImpl] only method=get & apply supported"));
        }

        String type = this.method.getAttribute("type");

        if (type.equals("suggest")) {

            /*
             * Call suggest method
             */
            String query = this.method.getAttribute("query");
            String start = this.method.getAttribute("_startRow");
            String end = this.method.getAttribute("_endRow");

            if ((!methodName.equals("get")) || (query == null) || (start == null) || (end == null)) {
                this.sendNotImplemented(ctx);

            } else {

                try {
                    /*
                     * JSON response
                     */
                    String content = suggest(query, start, end);
                    this.sendJSONResponse(content, ctx.getResponse());

                } catch (Exception e) {
                    this.sendBadRequest(ctx, e);

                }
            }
        } else if (type.equals("search")) {
            /*
             * Call searchmethod
             */
            String query = this.method.getAttribute("query");
            String start = this.method.getAttribute("_startRow");
            String end = this.method.getAttribute("_endRow");

            if ((!methodName.equals("get")) || (query == null) || (start == null) || (end == null)) {
                this.sendNotImplemented(ctx);

            } else {

                try {
                    /*
                     * JSON response
                     */
                    String content = getResult(query, start, end);
                    this.sendJSONResponse(content, ctx.getResponse());

                } catch (Exception e) {
                    this.sendBadRequest(ctx, e);

                }
            }
        } else if (type.equals("similar")) {
            String query = this.method.getAttribute("query");
            String name = this.method.getAttribute("name");
            if ((!methodName.equals("get")) || (query == null) || (name == null)) {
                this.sendNotImplemented(ctx);

            } else {
                try {
                    /*
                     * JSON response
                     */

                    String content = getSimilar(query, name);
                    this.sendJSONResponse(content, ctx.getResponse());

                } catch (Exception e) {
                    this.sendBadRequest(ctx, e);

                }
            }
        } else if (type.equals("checkout")) {

            // access post data
            String data = this.getRequestData(ctx);

            if ((!methodName.equals("apply")) || (data == null)) {
                this.sendNotImplemented(ctx);

            } else {
                try {
                    /*
                     * JSON response
                     */

                    String content = getCheckout(data);
                    this.sendJSONResponse(content, ctx.getResponse());

                } catch (Exception e) {
                    this.sendBadRequest(ctx, e);

                }
            }
        } else if (type.equals("download")) {

            // access post data when send with doApply
            //   String data = this.getRequestData(ctx);

            // access post data, from named FORM field
            String data = ctx.getRequest().getParameter("hiddenField");

            if ((!methodName.equals("apply")) || (data == null)) {
                this.sendNotImplemented(ctx);

            } else {
                try {
                    /*
                     * JSON response
                     */

                    byte[] bytes = getDownload(data);
                    this.sendZIPResponse(bytes, ctx.getResponse());

                } catch (Exception e) {
                    this.sendBadRequest(ctx, e);

                }
            }
        }
    }

    /**
     * Term suggestion returns a JSON object as response
     * 
     * @param query
     * @param start
     * @return
     * @throws Exception
     */
    private String suggest(String query, String start, String end) throws Exception {

        return new ScmDQM().suggest(query, start, end);
    }

    /**
     * Documents search based on suggestion returns a JSON object as response
     * 
     * @param query
     * @param start
     * @param end
     * @return
     * @throws Exception
     */
    private String getResult(String query, String start, String end) throws Exception {

        return new ScmDQM().result(query, start, end);

    }

    /**
     * Similar documents returns a JSON object as response
     * 
     * @param query
     * @param name
     * @return
     * @throws Exception
     */
    private String getSimilar(String query, String name) throws Exception {

        return new ScmDQM().similar(query, name);

    }

    /**
     * Computes a checkout HTML-form and embeds it in a JSON object as response
     * 
     * @param data
     * @return
     * @throws Exception 
     */
    private String getCheckout(String data) throws Exception {

        JSONArray jCheckout = new JSONArray(data);
        return new ScmDQM().checkout(jCheckout);

    }

    /**
     * Download all Java Module from a checkout as a ZIP response
     * 
     * @param data
     * @return
     * @throws Exception 
     */
    private byte[] getDownload(String data) throws Exception {

        JSONArray jCheckout = new JSONArray(data);
        return new ScmDQM().download(jCheckout);

    }

}