JoinSelectionServiceGwtImpl.java

/*
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * Copyright (c) 2011 Pentaho Corporation..  All rights reserved.
 * 
 * @author Ezequiel Cuellar
 */
package org.pentaho.platform.dataaccess.datasource.wizard.service.impl;

import java.util.List;

import org.pentaho.agilebi.modeler.gwt.BogoPojo;
import org.pentaho.gwt.widgets.login.client.AuthenticatedGwtServiceUtil;
import org.pentaho.gwt.widgets.login.client.IAuthenticatedGwtCommand;
import org.pentaho.metadata.model.LogicalRelationship;
import org.pentaho.platform.dataaccess.datasource.IConnection;
import org.pentaho.platform.dataaccess.datasource.wizard.IDatasourceSummary;
import org.pentaho.platform.dataaccess.datasource.wizard.service.IXulAsyncJoinSelectionService;
import org.pentaho.platform.dataaccess.datasource.wizard.service.gwt.IGwtJoinSelectionServiceAsync;
import org.pentaho.ui.xul.XulServiceCallback;

import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.rpc.ServiceDefTarget;

public class JoinSelectionServiceGwtImpl implements IXulAsyncJoinSelectionService {

	static IGwtJoinSelectionServiceAsync SERVICE;

	static {
		SERVICE = (org.pentaho.platform.dataaccess.datasource.wizard.service.gwt.IGwtJoinSelectionServiceAsync) GWT.create(org.pentaho.platform.dataaccess.datasource.wizard.service.gwt.IGwtJoinSelectionService.class);
		ServiceDefTarget endpoint = (ServiceDefTarget) SERVICE;
		endpoint.setServiceEntryPoint(getBaseUrl());
	}
	
	/**
	 * Returns the context-aware URL to the rpc service
	 */
	private static String getBaseUrl() {
		String moduleUrl = GWT.getModuleBaseURL();

		//
		// Set the base url appropriately based on the context in which we are
		// running this client
		//
		if (moduleUrl.indexOf("content") > -1) {//$NON-NLS-1$
			// we are running the client in the context of a BI Server plugin,
			// so
			// point the request to the GWT rpc proxy servlet
			String baseUrl = moduleUrl.substring(0, moduleUrl.indexOf("content"));//$NON-NLS-1$
			// NOTE: the dispatch URL ("connectionService") must match the bean
			// id for
			// this service object in your plugin.xml. "gwtrpc" is the servlet
			// that handles plugin gwt rpc requests in the BI Server.
			return baseUrl + "gwtrpc/joinSelectionService";//$NON-NLS-1$
		}
		// we are running this client in hosted mode, so point to the servlet
		// defined in war/WEB-INF/web.xml
		return moduleUrl + "JoinSelectionService";//$NON-NLS-1$
	}

	public static void setServiceEntryPoint(String serviceEntryPointBase) {
		ServiceDefTarget endpoint = (ServiceDefTarget) SERVICE;
		endpoint.setServiceEntryPoint(serviceEntryPointBase + "gwtrpc/joinSelectionService");
	}

	public JoinSelectionServiceGwtImpl() {

	}

	public void getDatabaseTables(final IConnection connection, final XulServiceCallback<List> xulCallback) {

		AuthenticatedGwtServiceUtil.invokeCommand(new IAuthenticatedGwtCommand() {
			public void execute(AsyncCallback callback) {
				SERVICE.getDatabaseTables(connection, callback);
			}
		}, new AsyncCallback<List>() {
			public void onFailure(Throwable arg0) {
				xulCallback.error(arg0.getLocalizedMessage(), arg0);
			}

			public void onSuccess(List arg0) {
				xulCallback.success(arg0);
			}
		});
	}

	public void getTableFields(final String table, final IConnection connection, final XulServiceCallback<List> xulCallback) {

		AuthenticatedGwtServiceUtil.invokeCommand(new IAuthenticatedGwtCommand() {
			public void execute(AsyncCallback callback) {
				SERVICE.getTableFields(table, connection, callback);
			}
		}, new AsyncCallback<List>() {
			public void onFailure(Throwable arg0) {
				xulCallback.error(arg0.getLocalizedMessage(), arg0);
			}

			public void onSuccess(List arg0) {
				xulCallback.success(arg0);
			}
		});
	}

	public void serializeJoins(final MultiTableDatasourceDTO dto, final IConnection selectedConnection, final XulServiceCallback<IDatasourceSummary> xulCallback) {

		AuthenticatedGwtServiceUtil.invokeCommand(new IAuthenticatedGwtCommand() {
			public void execute(AsyncCallback callback) {
				SERVICE.serializeJoins(dto, selectedConnection, callback);
			}
		}, new AsyncCallback<IDatasourceSummary>() {
			public void onFailure(Throwable arg0) {
				xulCallback.error(arg0.getLocalizedMessage(), arg0);
			}

			public void onSuccess(IDatasourceSummary arg0) {
				xulCallback.success(arg0);
			}
		});
	}
	
	public void deSerializeModelState(final String source, final XulServiceCallback<MultiTableDatasourceDTO> xulCallback) {

		AuthenticatedGwtServiceUtil.invokeCommand(new IAuthenticatedGwtCommand() {
			public void execute(AsyncCallback callback) {
				SERVICE.deSerializeModelState(source, callback);
			}
		}, new AsyncCallback<MultiTableDatasourceDTO>() {
			public void onFailure(Throwable arg0) {
				xulCallback.error(arg0.getLocalizedMessage(), arg0);
			}

			public void onSuccess(MultiTableDatasourceDTO arg0) {
				xulCallback.success(arg0);
			}
		});
	}
	
	public void gwtWorkaround(final BogoPojo pojofinal, final XulServiceCallback<BogoPojo> xulCallback) {

		AuthenticatedGwtServiceUtil.invokeCommand(new IAuthenticatedGwtCommand() {
			public void execute(AsyncCallback callback) {
				SERVICE.gwtWorkaround(pojofinal, callback);
			}
		}, new AsyncCallback<BogoPojo>() {
			public void onFailure(Throwable arg0) {
				xulCallback.error(arg0.getLocalizedMessage(), arg0);
			}

			public void onSuccess(BogoPojo arg0) {
				xulCallback.success(arg0);
			}
		});
	}
}