| /* |
| * This software consists of voluntary contributions made by many individuals |
| * on behalf of the Apache Software Foundation and was originally created by |
| * Sanjiva Weerawarana and others at International Business Machines |
| * Corporation. For more information on the Apache Software Foundation, |
| * please see <http://www.apache.org/>. |
| * |
| * 2012-01-15, Rony G. Flatscher |
| * - make event name comparisons case independent, Jira issue [BSF-19] |
| */ |
| |
| package org.apache.bsf.util; |
| |
| import java.util.Vector; |
| |
| import org.apache.bsf.BSFEngine; |
| import org.apache.bsf.BSFException; |
| import org.apache.bsf.BSFManager; |
| import org.apache.bsf.util.event.EventProcessor; |
| |
| /* |
| * Copyright (C) 2001-2006 Rony G. Flatscher |
| * |
| * 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 |
| * |
| * <a |
| * href="http://www.apache.org/licenses/LICENSE-2.0">http://www.apache.org/licenses/LICENSE-2.0</a> |
| * |
| * 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. |
| * |
| */ |
| |
| /** |
| * |
| * This is used to support binding scripts to be run when an event occurs, |
| * forwarding the arguments supplied to the event listener. It is an adapted |
| * version of org.apache.bsf.util.BSFEventProcessor. |
| */ |
| public class BSFEventProcessorReturningEventInfos implements EventProcessor { |
| BSFEngine engine; |
| |
| BSFManager manager; |
| |
| String filter; |
| |
| String source; |
| |
| int lineNo; |
| |
| int columnNo; |
| |
| Object script; |
| |
| Object dataFromScriptingEngine; // ---rgf, 2006-02-24: data coming from the |
| // script engine, could be |
| |
| // e.g. an object reference to forward event with received arguments to |
| |
| /** |
| * Package-protected constructor makes this class unavailable for public |
| * use. |
| * |
| * @param dataFromScriptingEngine |
| * this contains any object supplied by the scripting engine and |
| * gets sent back with the supplied script. This could be used |
| * e.g. for indicating which scripting engine object should be |
| * ultimately informed of the event occurrence. |
| */ |
| BSFEventProcessorReturningEventInfos(final BSFEngine engine, final BSFManager manager, |
| final String filter, final String source, final int lineNo, final int columnNo, |
| final Object script, final Object dataFromScriptingEngine) throws BSFException { |
| this.engine = engine; |
| this.manager = manager; |
| this.filter = filter; |
| this.source = source; |
| this.lineNo = lineNo; |
| this.columnNo = columnNo; |
| this.script = script; |
| this.dataFromScriptingEngine = dataFromScriptingEngine; |
| } |
| |
| // //////////////////////////////////////////////////////////////////////// |
| // |
| // event is delegated to me by the adapters using this. inFilter is |
| // in general the name of the method via which the event was received |
| // at the adapter. For prop/veto change events, inFilter is the name |
| // of the property. In any case, in the event processor, I only forward |
| // those events if for which the filters match (if one is specified). |
| |
| public void processEvent(final String inFilter, final Object[] evtInfo) { |
| try { |
| processExceptionableEvent(inFilter, evtInfo); |
| } catch (final RuntimeException re) { |
| // rethrow this .. I don't want to intercept run-time stuff |
| // that can in fact occur legit |
| throw re; |
| } catch (final Exception e) { |
| // should not occur |
| System.err.println("BSFError: non-exceptionable event delivery " |
| + "threw exception (that's not nice): " + e); |
| e.printStackTrace(); |
| } |
| } |
| |
| // //////////////////////////////////////////////////////////////////////// |
| // |
| // same as above, but used when the method event method may generate |
| // an exception which must go all the way back to the source (as in |
| // the vetoableChange case) |
| |
| public void processExceptionableEvent(final String inFilter, final Object[] evtInfo) |
| throws Exception { |
| |
| // System.err.println(this+": inFilter=["+inFilter+"], |
| // filter=["+filter+"]"); |
| if ((filter != null) && !isFilteredEvent(filter, inFilter)) { |
| // ignore this event |
| return; |
| } |
| |
| // run the script |
| // engine.exec (source, lineNo, columnNo, script); |
| |
| // create the parameter vectors for engine.apply() |
| final Vector paramNames = new Vector(), paramValues = new Vector(); |
| |
| // parameter # 1 |
| // supply the parameters as an array object as sent to the event object |
| // listener |
| // (usually the first entry is the sent event object) |
| paramNames.add("eventParameters"); |
| paramValues.add(evtInfo); |
| |
| // parameter # 2 |
| // supply the data object received from the scripting engine to be sent |
| // with the event |
| paramNames.add("dataFromScriptingEngine"); |
| paramValues.add(this.dataFromScriptingEngine); // can be null as well |
| |
| // parameter # 3 |
| // event filter in place |
| paramNames.add("inFilter"); |
| paramValues.add(inFilter); // event name that has occurred |
| |
| // parameter # 4 |
| // event filter in place |
| paramNames.add("eventFilter"); |
| paramValues.add(this.filter); // can be null as well |
| |
| // parameter # 5 |
| // BSF manager instance (e.g. allows access to its registry) |
| paramNames.add("BSFManager"); |
| paramValues.add(this.manager); |
| |
| engine.apply(source, lineNo, columnNo, this.script, paramNames, |
| paramValues); |
| // System.err.println("returned from engine.exec."); |
| |
| } |
| |
| |
| private static boolean isFilteredEvent(final String filter, final String inFilter) |
| { |
| boolean bRes=filter.equalsIgnoreCase(inFilter); |
| if (bRes) |
| { |
| return bRes; |
| } |
| |
| final String chunks[]=filter.replace('+',' ').split(" "); |
| for (int i=0;i<chunks.length;i++) |
| { |
| bRes=chunks[i].equalsIgnoreCase(inFilter); |
| if (bRes) |
| { |
| return bRes; |
| } |
| } |
| return bRes; |
| } |
| } |