使用JAVA代碼提取SAP BOE WEBI 4.0報表的SQL語句

現在BO 4.0的API不支持直接打印WEBI報表的SQL語句，但這並非不可能！

可能使用到的包：

• C:\Program Files (x86)\SAP BusinessObjects\Tomcat6\webapps\BOE\WEB-INF\eclipse\plugins\webpath.AnalyticalReporting\web\WEB-INF\lib\adv_ivcdzview.jar
• C:\Program Files (x86)\SAP BusinessObjects\Tomcat6\webapps\BOE\WEB-INF\eclipse\plugins\webpath.AnalyticalReporting\web\WEB-INF\lib\webi_client_toolkit.jar
• C:\Program Files (x86)\SAP BusinessObjects\SAP BusinessObjects Enterprise XI 4.0\java\lib\*
  (without subfolders)

這個程序有兩個類：Program.java和Processor.java，Program類列出WEBI對象，Processor類用來打印SQL語句，有意思的是，Processor類使用BO 4.0的API函數來獲取數據提供者，從而達到獲取查詢的SQL語句的目的。

Program.java

import com.crystaldecisions.sdk.exception.SDKException;
import com.crystaldecisions.sdk.framework.CrystalEnterprise;
import com.crystaldecisions.sdk.framework.IEnterpriseSession;
import com.crystaldecisions.sdk.framework.ISessionMgr;
import com.crystaldecisions.sdk.occa.infostore.IInfoObject;
import com.crystaldecisions.sdk.occa.infostore.IInfoObjects;
import com.crystaldecisions.sdk.occa.infostore.IInfoStore;

public class Program {
   public static void main(String[] args) throws Exception {

      IEnterpriseSession enterpriseSession = null;
      try {
         // Establish connection
         System.out.println("Connecting...");
         ISessionMgr sessionMgr = CrystalEnterprise.getSessionMgr();
         enterpriseSession = sessionMgr.logon(
               "Administrator", "", "localhost", "secEnterprise");
         IInfoStore infoStore = (IInfoStore) enterpriseSession.getService("InfoStore");

         // Initialize processor (see below)
         Processor processor = new Processor(enterpriseSession);

         // Get list of Webi documents
         String cmsQuery = "select SI_NAME, SI_ID from CI_INFOOBJECTS "
               + "where SI_KIND = 'Webi' and SI_INSTANCE=0";
         IInfoObjects infoObjects = (IInfoObjects) infoStore.query(cmsQuery);

         // Process all Webi documents from a folder (root here)
         for (Object object : infoObjects) {
            IInfoObject infoObject = (IInfoObject) object;
            String path = getInfoObjectPathAndTitle(infoObject); 
            if (path.startsWith("/")) {
               System.out.println(path);
               processor.process(infoObject);
               System.out.println();
            }
         }
      } catch (SDKException ex) {
         ex.printStackTrace();
      } finally {
         if (enterpriseSession != null)
            enterpriseSession.logoff();
      }
      System.out.println("Finished!");
   }

   public static String getInfoObjectPath(IInfoObject infoObject) throws SDKException {
      String path = "";
      while (infoObject.getParentID() != 0) {
         infoObject = infoObject.getParent();
         path = "/" + infoObject.getTitle() + path;
      }
      return path;
   }

   public static String getInfoObjectPathAndTitle(IInfoObject infoObject) throws SDKException {
      return getInfoObjectPath(infoObject) + "/" + infoObject.getTitle();
   }
}

Processor.java

import java.util.List;
import java.util.Locale;

import com.businessobjects.adv_ivcdzview.Utils;
import com.businessobjects.rebean.wi.model.engine.IDocumentInstance;
import com.businessobjects.rebean.wi.services.IDocumentInstanceManagementService;
import com.businessobjects.rebean.wi.services.IDocumentInstanceService;
import com.businessobjects.sdk.core.Core;
import com.businessobjects.sdk.core.context.IContext;
import com.crystaldecisions.sdk.exception.SDKException;
import com.crystaldecisions.sdk.framework.IEnterpriseSession;
import com.crystaldecisions.sdk.occa.infostore.IInfoObject;
import com.sap.sl.dataprovider.DataProvider;
import com.sap.sl.dataprovider.service.DataProviderService;
import com.sap.sl.queryexecutionplan.NativeQueryNode;
import com.sap.sl.queryexecutionplan.OperatorNode;
import com.sap.sl.queryexecutionplan.QueryExecutionPlan;
import com.sap.sl.queryexecutionplan.QueryExecutionPlanNode;
import com.sap.sl.sdk.workspace.service.WorkspaceContextualService;
import com.sap.sl.workspace.Workspace;
import com.sap.sl.workspace.service.WorkspaceService;
import com.sap.webi.client.toolkit.Deployment;
import com.sap.webi.client.toolkit.LoginKey;
import com.sap.webi.client.toolkit.SessionContext;
import com.sap.webi.client.toolkit.services.DSLServicesHelper;
import com.sap.webi.client.toolkit.services.ServicesHelper;

public class Processor {

   SessionContext sessionContext;
   Locale localLocale;
   IContext context;
   IDocumentInstanceManagementService dimService;
   IDocumentInstanceService diService;
   DataProviderService dpService;
   WorkspaceService wsService;

   public Processor(IEnterpriseSession enterpriseSession) throws SDKException {
      sessionContext = Utils.getSessionContextManager()
            .matchSessionContext(Deployment.DHTML, 
                  enterpriseSession.getSerializedSession(), true);

      localLocale = Locale.getDefault();
      sessionContext.getLoginInfo().set(LoginKey.LOCALE, localLocale);
      sessionContext.logonWithSerializedSession();

      context = sessionContext.getCoreContext();         
      dimService = Core.getService(IDocumentInstanceManagementService.class);
      diService = ServicesHelper.getDocumentInstanceService();

      dpService = DSLServicesHelper.getDataProviderService(context);
      wsService =  Core.getService(WorkspaceContextualService.class, context);
   }

   public void process(IInfoObject infoObject) {
      IDocumentInstance doc = dimService.openDocument(context, infoObject.getID());               
      Workspace workspace = diService.getWorkspace(context, doc);            
      List<DataProvider> listDataProvider = wsService.getDataProviders(workspace); 
      for (DataProvider provider : listDataProvider) {
         QueryExecutionPlan plan = dpService.getQueryExecutionPlan(provider, true);
         print(plan.getQueryExecPlanTree());
      }
      dimService.closeDocument(context, doc);
   }

   private static void print(QueryExecutionPlanNode planNode) {
      if (planNode instanceof NativeQueryNode) {
         NativeQueryNode queryNode = (NativeQueryNode)planNode;
         System.out.println(queryNode.getNativeQueryString());         
      } else if (planNode instanceof OperatorNode) {
         OperatorNode operatorNode = (OperatorNode)planNode;      
         for (QueryExecutionPlanNode node : operatorNode.getChildren()) {
            print(node);
         }
      }
   }
}

原文鏈接：http://bukhantsov.org/2012/11/how-to-print-sql-queries-of-webi-4-0-document-using-java/