Java tutorial
/* * Copyright 2012 OSBI Ltd * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.saiku.plugin.resources; import java.io.File; import java.io.FilenameFilter; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.Date; import java.util.List; import java.util.Properties; import javax.ws.rs.DefaultValue; import javax.ws.rs.GET; import javax.ws.rs.Path; import javax.ws.rs.Produces; import javax.ws.rs.QueryParam; import javax.ws.rs.core.Response; import javax.xml.bind.annotation.XmlAccessType; import javax.xml.bind.annotation.XmlAccessorType; import org.dom4j.Document; import org.dom4j.DocumentHelper; import org.pentaho.platform.api.engine.IPluginManager; import org.pentaho.platform.engine.core.system.PentahoSessionHolder; import org.pentaho.platform.engine.core.system.PentahoSystem; import org.pentaho.platform.plugin.services.pluginmgr.PluginClassLoader; import org.saiku.datasources.connection.ISaikuConnection; import org.saiku.datasources.datasource.SaikuDatasource; import org.saiku.olap.dto.SaikuQuery; import org.saiku.plugin.util.ResourceManager; import org.saiku.plugin.util.packager.Packager; import org.saiku.service.datasource.DatasourceService; import org.saiku.service.olap.OlapQueryService; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; /** * QueryServlet contains all the methods required when manipulating an OLAP Query. * @author Paul Stoellberger * */ @Component @Path("/saiku/api/{username}/plugin") @XmlAccessorType(XmlAccessType.NONE) public class PluginResource { private static final Logger log = LoggerFactory.getLogger(PluginResource.class); @Autowired private OlapQueryService queryService; @Autowired private DatasourceService datasourceService; @GET @Produces({ "text/plain" }) @Path("/cda") public String getCda(@QueryParam("query") String query) { try { SaikuQuery sq = queryService.getQuery(query); SaikuDatasource ds = datasourceService.getDatasource(sq.getCube().getConnection()); Properties props = ds.getProperties(); String cdaFile = getCdaAsString(props.getProperty(ISaikuConnection.DRIVER_KEY), props.getProperty(ISaikuConnection.URL_KEY), sq.getName(), sq.getMdx()); return cdaFile; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return ""; } @GET @Produces({ "application/json" }) @Path("/cda/execute") public Response execute(@QueryParam("query") String query, @QueryParam("type") String type) { try { String cdaString = getCda(query); Document cda = DocumentHelper.parseText(cdaString); throw new UnsupportedOperationException("We dont support execution of CDA at this time"); // final CdaSettings cdaSettings = new CdaSettings(cda, "cda1", null); // // log.debug("Doing query on Cda - Initializing CdaEngine"); // final CdaEngine engine = CdaEngine.getInstance(); // final QueryOptions queryOptions = new QueryOptions(); // queryOptions.setDataAccessId("1"); // queryOptions.setOutputType("json"); // log.info("Doing query"); // ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); // PrintStream printstream = new PrintStream(outputStream); // engine.doQuery(printstream, cdaSettings, queryOptions); // byte[] doc = outputStream.toByteArray(); // // return Response.ok(doc, MediaType.APPLICATION_JSON).header( // "content-length",doc.length).build(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return Response.serverError().build(); } @GET @Produces({ "text/plain" }) @Path("/plugins") public String getPlugins(@QueryParam("debug") @DefaultValue("false") Boolean debug) { try { Packager packager = Packager.getInstance(); List<File> files = new ArrayList<File>(); String searchRootDir = PentahoSystem.getApplicationContext().getSolutionPath("saiku/plugins"); File searchRootFile = new File(searchRootDir); if (searchRootFile.exists()) { List<File> solutionFiles = getJsFiles(searchRootFile); files.addAll(solutionFiles); } final IPluginManager pluginManager = (IPluginManager) PentahoSystem.get(IPluginManager.class, PentahoSessionHolder.getSession()); Long start = (new Date()).getTime(); for (String plugin : pluginManager.getRegisteredPlugins()) { final PluginClassLoader pluginClassloader = (PluginClassLoader) pluginManager .getClassLoader(plugin); File pluginDir = pluginClassloader.getPluginDir(); File saikuDir = new File(pluginDir, "saiku"); if (saikuDir.exists()) { File saikuPluginDir = new File(saikuDir, "plugins"); if (saikuPluginDir.exists()) { List<File> jsFiles = getJsFiles(saikuPluginDir); files.addAll(jsFiles); } } } Long end = (new Date()).getTime(); log.debug("Looking for all plugin files time: " + (end - start) + "ms - Files: " + files.size()); if (files.size() > 0) { String pluginRootDir = PentahoSystem.getApplicationContext().getSolutionPath("system/saiku"); File[] fileArray = files.toArray(new File[files.size()]); packager.registerPackage("scripts", Packager.Filetype.JS, searchRootDir, pluginRootDir + "/../../system/saiku/ui/js/scripts.js", fileArray); packager.minifyPackage("scripts", (debug ? Packager.Mode.CONCATENATE : Packager.Mode.MINIFY)); return ResourceManager.getInstance().getResourceAsString("ui/js/scripts.js"); } } catch (IOException ioe) { log.error("Error fetching plugins", ioe); } return ""; } private List<File> getJsFiles(File rootDir) { List<File> result = new ArrayList<File>(); File[] files = rootDir.listFiles(new FilenameFilter() { public boolean accept(File file, String name) { return name.endsWith(".js"); } }); if (files != null) result.addAll(Arrays.asList(files)); File[] folders = rootDir.listFiles(new FilenameFilter() { public boolean accept(File file, String name) { return file.isDirectory(); } }); if (folders != null) { for (File f : folders) { List<File> partial = getJsFiles(f); if (partial != null) result.addAll(partial); } } return result; } // private CdaSettings initCda(String sessionId, String domain) throws Exception { // CdaSettings cda = new CdaSettings("cda" + sessionId, null); // // String[] domainInfo = domain.split("/"); // Connection connection = new MetadataConnection("1", domainInfo[0] + "/" + domainInfo[1], domainInfo[1]); // Connection con = new jdbcconn // // MqlDataAccess dataAccess = new MqlDataAccess(sessionId, sessionId, "1", ""); // //dataAccess.setCacheEnabled(true); // cda.addConnection(connection); // cda.addDataAccess(dataAccess); // return cda; // } // private CdaSettings getCdaSettings(String sessionId, SaikuDatasource ds, SaikuQuery query) { // // try { // Document document = DocumentHelper.parseText(""); // // return new CdaSettings(document, sessionId, null); // } catch (Exception e) { // e.printStackTrace(); // } // return null; // } private Document getCdaAsDocument(String driver, String url, String name, String query) throws Exception { String cda = getCdaAsString(driver, url, name, query); return DocumentHelper.parseText(cda); } private String getCdaAsString(String driver, String url, String name, String query) throws Exception { String cda = getCdaTemplate(); cda = cda.replaceAll("@@DRIVER@@", driver); cda = cda.replaceAll("@@NAME@@", name); cda = cda.replaceAll("@@URL@@", url); cda = cda.replaceAll("@@QUERY@@", query); return cda; } private String getCdaTemplate() { String cda = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n" + "<CDADescriptor>\n" + " <DataSources>\n" + " <Connection id=\"1\" type=\"olap4j.jdbc\">\n" + " <Driver>@@DRIVER@@</Driver>\n" + " <Url>@@URL@@</Url>\n" + " </Connection>\n" + " </DataSources>\n" + " <DataAccess id=\"1\" connection=\"1\" type=\"olap4j\" access=\"public\">\n" + " <Name>@@NAME@@</Name>\n" + " <Query><![CDATA[" + " @@QUERY@@" + " ]]></Query>\n" + " </DataAccess>\n" + "</CDADescriptor>\n"; return cda; } }