/*!
* 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) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.platform.web.servlet;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.actionsequence.dom.IActionDefinition;
import org.pentaho.platform.api.engine.IActionParameter;
import org.pentaho.platform.api.engine.IActionSequence;
import org.pentaho.platform.api.engine.ICreateFeedbackParameterCallback;
import org.pentaho.platform.api.engine.IMimeTypeListener;
import org.pentaho.platform.api.engine.IOutputHandler;
import org.pentaho.platform.api.engine.IParameterProvider;
import org.pentaho.platform.api.engine.IPentahoRequestContext;
import org.pentaho.platform.api.engine.IPentahoSession;
import org.pentaho.platform.api.engine.IRuntimeContext;
import org.pentaho.platform.api.engine.ISystemSettings;
import org.pentaho.platform.api.repository.IContentItem;
import org.pentaho.platform.api.repository2.unified.RepositoryFilePermission;
import org.pentaho.platform.engine.core.solution.ActionInfo;
import org.pentaho.platform.engine.core.system.PentahoRequestContextHolder;
import org.pentaho.platform.engine.core.system.PentahoSystem;
import org.pentaho.platform.engine.services.ActionSequenceJCRHelper;
import org.pentaho.platform.engine.services.actionsequence.ActionParameterSource;
import org.pentaho.platform.util.web.SimpleUrlFactory;
import org.pentaho.platform.web.http.HttpOutputHandler;
import org.pentaho.platform.web.http.request.HttpRequestParameterProvider;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class SolutionEngineInteractivityService extends ServletBase {
private static final Log logger = LogFactory.getLog( SolutionEngineInteractivityService.class );
protected Map xformFields = new HashMap();
public Log getLogger() {
return SolutionEngineInteractivityService.logger;
}
public SolutionEngineInteractivityService() {
super();
}
protected boolean doMessages( final HttpServletRequest request ) {
return "true".equalsIgnoreCase( request.getParameter( "debug" ) ); //$NON-NLS-1$ //$NON-NLS-2$
}
protected void handleActionRequest( final HttpServletRequest request, final HttpServletResponse response,
final HttpOutputHandler outputHandler, final HttpServletRequestHandler requestHandler,
IParameterProvider requestParameters, ByteArrayOutputStream outputStream, final IContentItem contentItem )
throws ServletException, IOException {
IRuntimeContext runtime = null;
try {
final org.w3c.dom.Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
final org.w3c.dom.Element root = document.createElement( "action_sequence_info" );
document.appendChild( root );
requestHandler.setCreateFeedbackParameterCallback( new ICreateFeedbackParameterCallback() {
public void createFeedbackParameter( IRuntimeContext runtimeContext, String fieldName, String displayName,
String hint, Object defaultValues, List values, Map dispNames, String displayStyle, boolean optional,
boolean visible ) {
org.w3c.dom.Element parameterElement = document.createElement( "parameter" );
parameterElement.setAttribute( "name", fieldName );
parameterElement.setAttribute( "display-name", displayName );
parameterElement.setAttribute( "display-style", displayStyle );
parameterElement.setAttribute( "hint", "" + hint );
parameterElement.setAttribute( "optional", "" + optional );
parameterElement.setAttribute( "visible", "" + visible );
try {
IActionParameter actionParameter = runtimeContext.getInputParameter( fieldName );
if ( actionParameter != null ) {
List variables = actionParameter.getVariables();
for ( int i = 0; variables != null && i < variables.size(); i++ ) {
Object var = variables.get( i );
if ( var instanceof ActionParameterSource ) {
String sourceName = ( (ActionParameterSource) var ).getSourceName();
String sourceValue = ( (ActionParameterSource) var ).getValue();
parameterElement.setAttribute( "source-name", "" + sourceName );
parameterElement.setAttribute( "source-value", "" + sourceValue );
} else {
System.out.println( var );
}
}
}
} catch ( Exception npe ) {
//ignore
}
root.appendChild( parameterElement );
if ( values != null ) {
org.w3c.dom.Element valuesElement = document.createElement( "values" );
for ( Object value : values ) {
org.w3c.dom.Element valueElement = document.createElement( "value" );
valueElement.setAttribute( "value", "" + value );
if ( dispNames != null && dispNames.containsKey( value ) ) {
valueElement.setAttribute( "display-name", "" + dispNames.get( value ) );
}
valuesElement.appendChild( valueElement );
}
parameterElement.appendChild( valuesElement );
}
if ( defaultValues != null ) {
org.w3c.dom.Element valuesElement = document.createElement( "selected-values" );
if ( defaultValues instanceof List ) {
for ( Object value : (List) defaultValues ) {
org.w3c.dom.Element valueElement = document.createElement( "value" );
valueElement.setAttribute( "value", "" + value );
valuesElement.appendChild( valueElement );
}
} else {
org.w3c.dom.Element valueElement = document.createElement( "value" );
valueElement.setAttribute( "value", "" + defaultValues );
valuesElement.appendChild( valueElement );
}
parameterElement.appendChild( valuesElement );
}
}
} );
runtime = requestHandler.handleActionRequest( 0, 0 );
root.setAttribute( "is-prompt-pending", "" + runtime.isPromptPending() );
DOMSource source = new DOMSource( document );
StreamResult result = new StreamResult( new StringWriter() );
TransformerFactory.newInstance().newTransformer().transform( source, result );
String theXML = result.getWriter().toString();
response.setContentType( "text/xml" );
response.getOutputStream().write( theXML.getBytes() );
response.getOutputStream().close();
} catch ( ParserConfigurationException e ) {
e.printStackTrace();
} catch ( TransformerConfigurationException e ) {
e.printStackTrace();
} catch ( TransformerException e ) {
e.printStackTrace();
} catch ( TransformerFactoryConfigurationError e ) {
e.printStackTrace();
} finally {
if ( runtime != null ) {
runtime.dispose();
}
}
if ( contentItem != null ) {
contentItem.closeOutputStream();
}
}
protected void setupRequestHandler( final HttpServletRequest request,
final HttpServletRequestHandler requestHandler ) {
String prompt = request.getParameter( "prompt" ); //$NON-NLS-1$
String actionPath = request.getParameter( "path" ); //$NON-NLS-1$
String processId = this.getClass().getName();
String instanceId = request.getParameter( "instance-id" ); //$NON-NLS-1$
requestHandler.setInstanceId( instanceId );
requestHandler.setProcessId( processId );
requestHandler.setActionPath( actionPath );
requestHandler.setForcePrompt( ( prompt != null ) && prompt.equalsIgnoreCase( "yes" ) ); //$NON-NLS-1$
}
protected void setupOutputHandler( final HttpOutputHandler outputHandler,
final IParameterProvider requestParameters ) {
int outputPreference = IOutputHandler.OUTPUT_TYPE_DEFAULT;
outputHandler.setOutputPreference( outputPreference );
}
protected HttpServletRequestHandler getRequestHandler( final HttpServletRequest request,
final HttpServletResponse response, final IPentahoSession userSession,
final IParameterProvider requestParameters, final OutputStream outputStream,
final HttpOutputHandler outputHandler, final SimpleUrlFactory urlFactory ) throws ServletException, IOException {
HttpServletRequestHandler requestHandler =
new HttpServletRequestHandler( userSession, null, request, outputHandler, urlFactory );
setupRequestHandler( request, requestHandler, requestParameters, userSession );
return requestHandler;
}
protected HttpOutputHandler createOutputHandler( final HttpServletResponse response,
final OutputStream outputStream ) {
return new HttpOutputHandler( response, outputStream, true );
}
@Override
protected void doGet( final HttpServletRequest request, final HttpServletResponse response ) throws ServletException,
IOException {
PentahoSystem.systemEntryPoint();
try {
IPentahoSession userSession = getPentahoSession( request );
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
String solutionName = request.getParameter( "solution" ); //$NON-NLS-1$
String actionPath = request.getParameter( "path" ); //$NON-NLS-1$
String actionName = request.getParameter( "action" ); //$NON-NLS-1$
IActionSequence actionSequence =
new ActionSequenceJCRHelper().getActionSequence( ActionInfo.buildSolutionPath( solutionName, actionPath,
actionName ), PentahoSystem.loggingLevel, RepositoryFilePermission.READ );
String fileName = null;
if ( actionSequence != null ) {
String title = actionSequence.getTitle();
if ( ( title != null ) && ( title.length() > 0 ) ) {
fileName = title;
} else {
String sequenceName = actionSequence.getSequenceName();
if ( ( sequenceName != null ) && ( sequenceName.length() > 0 ) ) {
fileName = sequenceName;
} else {
List actionDefinitionsList = actionSequence.getActionDefinitionsAndSequences();
int i = 0;
boolean done = false;
while ( ( actionDefinitionsList.size() > i ) && !done ) {
IActionDefinition actionDefinition = (IActionDefinition) actionDefinitionsList.get( i );
String componentName = actionDefinition.getComponentName();
if ( ( componentName != null ) && ( componentName.length() > 0 ) ) {
fileName = componentName;
done = true;
} else {
i++;
}
}
}
}
}
IPentahoRequestContext requestContext = PentahoRequestContextHolder.getRequestContext();
HttpOutputHandler outputHandler = createOutputHandler( response, outputStream );
outputHandler.setSession( userSession );
IMimeTypeListener listener = new HttpMimeTypeListener( request, response );
listener.setName( fileName );
outputHandler.setMimeTypeListener( listener );
SimpleUrlFactory urlFactory =
new SimpleUrlFactory( requestContext.getContextPath()
+ "SolutionEngineInteractivityService?" ); //$NON-NLS-1$
IParameterProvider requestParameters = new HttpRequestParameterProvider( request );
setupOutputHandler( outputHandler, requestParameters );
HttpServletRequestHandler requestHandler =
getRequestHandler( request, response, userSession, requestParameters, outputStream,
outputHandler, urlFactory );
handleActionRequest( request, response, outputHandler, requestHandler, requestParameters, outputStream, null );
} finally {
PentahoSystem.systemExitPoint();
}
}
@Override
protected void doPost( final HttpServletRequest request, final HttpServletResponse response )
throws ServletException, IOException {
doGet( request, response );
}
protected void setupRequestHandler( final HttpServletRequest request, final HttpServletRequestHandler requestHandler,
final IParameterProvider requestParameters, final IPentahoSession userSession ) {
this.setupRequestHandler( request, requestHandler );
// first take a secondary action
String actionName = requestParameters.getStringParameter( "action2", null ); //$NON-NLS-1$
if ( actionName == null ) {
// now look for a primary action
actionName = requestParameters.getStringParameter( "action", null ); //$NON-NLS-1$
}
ISystemSettings systemSettings = PentahoSystem.getSystemSettings();
String defaultParameterXsl = systemSettings.getSystemSetting( "default-parameter-xsl", "DefaultParameterForm.xsl"
); //$NON-NLS-1$ //$NON-NLS-2$
requestHandler.setParameterXsl( defaultParameterXsl );
}
}