/** * Prepares the mediator for the invocation of an external script * * @param synCtx MessageContext script * @throws ScriptException For any errors , when compile the script */ protected synchronized void prepareExternalScript(MessageContext synCtx) throws ScriptException { // TODO: only need this synchronized method for dynamic registry entries. If there was a way // to access the registry entry during mediator initialization then for non-dynamic entries // this could be done just the once during mediator initialization. // Derive actual key from xpath expression or get static key String generatedScriptKey = key.evaluateValue(synCtx); Entry entry = synCtx.getConfiguration().getEntryDefinition(generatedScriptKey); boolean needsReload = (entry != null) && entry.isDynamic() && (!entry.isCached() || entry.isExpired()); synchronized (resourceLock) { if (scriptSourceCode == null || needsReload) { Object o = synCtx.getEntry(generatedScriptKey); if (o instanceof OMElement) { scriptSourceCode = ((OMElement) (o)).getText(); scriptEngine.eval(scriptSourceCode); } else if (o instanceof String) { scriptSourceCode = (String) o; scriptEngine.eval(scriptSourceCode); } else if (o instanceof OMText) { DataHandler dataHandler = (DataHandler) ((OMText) o).getDataHandler(); if (dataHandler != null) { BufferedReader reader = null; try { reader = new BufferedReader(new InputStreamReader(dataHandler.getInputStream())); scriptEngine.eval(reader); } catch (IOException e) { handleException("Error in reading script as a stream ", e, synCtx); } finally { if (reader != null) { try { reader.close(); } catch (IOException e) { handleException("Error in closing input stream ", e, synCtx); } } } } } } } // load <include /> scripts; reload each script if needed for (Value includeKey : includes.keySet()) { String includeSourceCode = (String) includes.get(includeKey); String generatedKey = includeKey.evaluateValue(synCtx); Entry includeEntry = synCtx.getConfiguration().getEntryDefinition(generatedKey); boolean includeEntryNeedsReload = (includeEntry != null) && includeEntry.isDynamic() && (!includeEntry.isCached() || includeEntry.isExpired()); synchronized (resourceLock) { if (includeSourceCode == null || includeEntryNeedsReload) { log.debug("Re-/Loading the include script with key " + includeKey); Object o = synCtx.getEntry(generatedKey); if (o instanceof OMElement) { includeSourceCode = ((OMElement) (o)).getText(); scriptEngine.eval(includeSourceCode); } else if (o instanceof String) { includeSourceCode = (String) o; scriptEngine.eval(includeSourceCode); } else if (o instanceof OMText) { DataHandler dataHandler = (DataHandler) ((OMText) o).getDataHandler(); if (dataHandler != null) { BufferedReader reader = null; try { reader = new BufferedReader(new InputStreamReader(dataHandler.getInputStream())); scriptEngine.eval(reader); } catch (IOException e) { handleException("Error in reading script as a stream ", e, synCtx); } finally { if (reader != null) { try { reader.close(); } catch (IOException e) { handleException("Error in closing input" + " stream ", e, synCtx); } } } } } } } } }