Java Command类代码示例

import org.apache.commons.chain.Command; //导入依赖的package包/类
public void executeCommandLine(CommandLine commandLine)
    throws DataScraper3Exception {

  if (!commandLine.hasOption(CommandLineOptions.COMMAND)) {
    throw new DataScraper3Exception("No command supplied.");
  }

  CommandContext context = new CommandContext();
  context.put(CommandContext.EODDATAPROVIDER_KEY, _eodDataProvider);
  context.put(CommandContext.EODDATASINK_KEY, _eodDataSink);
  context.put(CommandContext.EMAILSERVICE_KEY, _emailService);

  // place optional argument values into the context
  if (commandLine.hasOption(CommandLineOptions.EXCHANGE)) {
    context.put(CommandContext.EXCHANGE_KEY,
        commandLine.getOptionValue(CommandLineOptions.EXCHANGE));
  }

  if (commandLine.hasOption(CommandLineOptions.SYMBOL)) {
    context.put(CommandContext.SYMBOL_KEY,
        commandLine.getOptionValue(CommandLineOptions.SYMBOL));
  }

  try {

    Command command = (Command)_appContext.getBean(commandLine
                                                   .getOptionValue(CommandLineOptions.COMMAND));

    command.execute(context);
  } catch (Exception e) {
    throw new DataScraper3Exception(e);
  }

}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * <p>Invoke the Command for a Context, returning TRUE if processing
 * should halt.</p>
 *
 * @param context Our ActionContext
 * @return TRUE if processing should halt
 * @throws Exception On any error
 */
public boolean execute(Context context)
    throws Exception {
    if (LOG.isTraceEnabled()) {
        LOG.trace("execute [" + this + "]");
    }

    Command command = getCommand(context);

    if (command != null) {
        return command.execute(getContext(context));
    } else {
        return false;
    }
}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * <p>Return the command specified by the <code>command</code> and
 * <code>catalog</code> properties of the <code>forwardConfig</code>
 * property of the given <code>ActionContext</code>.  If
 * <code>forwardConfig</code> is null, return null.</p>
 *
 * @param context Our ActionContext
 * @return Command to execute or null
 */
protected Command getCommand(ActionContext context) {
    ForwardConfig forwardConfig = context.getForwardConfig();

    if (forwardConfig == null) {
        return null;
    }

    return getCommand(forwardConfig.getCommand(), forwardConfig.getCatalog());
}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * <p>If the <code>context</code> is "valid", lookup a command and execute
 * it.</p>
 *
 * @param actionCtx The <code>Context</code> for the current request
 * @return the result of the lookup command's <code>execute</code> method,
 *         if executed, or <code>false</code> if it was not executed.
 * @throws Exception on any error
 */
public boolean execute(ActionContext actionCtx)
    throws Exception {
    if (shouldProcess(actionCtx)) {
        Command command = getCommand(actionCtx);

        if (command != null) {
            return (command.execute(actionCtx));
        }
    }

    return (false);
}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * <p>Find the <code>ActionConfig</code> in the current context and, if it
 * is properly configured, lookup the appropriate <code>commons-chain</code>
 * command.</p>
 *
 * @param context A valid ActionContext
 * @return a <code>Command</code> to execute, or null if none is specified
 *         or if the specified command cannot be found.
 */
protected Command getCommand(ActionContext context) {
    ActionConfig actionConfig = context.getActionConfig();

    String commandName = actionConfig.getCommand();

    if (commandName == null) {
        return null;
    }

    String catalogName = actionConfig.getCatalog();

    return getCommand(commandName, catalogName);
}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * <p>If an exception was thrown by a subsequent <code>Command</code>,
 * pass it on to the specified exception handling chain.  Otherwise, do
 * nothing.</p>
 *
 * @param context   The {@link Context} to be processed by this {@link
 *                  Filter}
 * @param exception The <code>Exception</code> (if any) that was thrown by
 *                  the last {@link Command} that was executed; otherwise
 *                  <code>null</code>
 * @return TRUE if post processing an exception occurred and the exception
 *         processing chain invoked
 * @throws IllegalStateException If exception throws exception
 */
public boolean postprocess(Context context, Exception exception) {
    // Do nothing if there was no exception thrown
    if (exception == null) {
        return (false);
    }

    // Stash the exception in the specified context attribute
    if (LOG.isDebugEnabled()) {
        LOG.debug("Attempting to handle a thrown exception");
    }

    ActionContext actionCtx = (ActionContext) context;

    actionCtx.setException(exception);

    // Execute the specified command
    try {
        Command command = lookupExceptionCommand();

        if (command == null) {
            LOG.error("Cannot find exceptionCommand '" + exceptionCommand
                + "'");
            throw new IllegalStateException(
                "Cannot find exceptionCommand '" + exceptionCommand + "'");
        }

        if (LOG.isTraceEnabled()) {
            LOG.trace("Calling exceptionCommand '" + exceptionCommand + "'");
        }

        command.execute(context);
    } catch (Exception e) {
        LOG.warn("Exception from exceptionCommand '" + exceptionCommand
            + "'", e);
        throw new IllegalStateException("Exception chain threw exception");
    }

    return (true);
}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
public ChainResultObj getResultFromClass(Class<Command>[] clazz, Context context) throws Exception {
	for (int i=0; i<clazz.length; i++) {
		this.addCommand(clazz[i].newInstance());
	}						
	this.execute(context);
	return this.getResult(context);
}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
public void setCommand(Command command) {
  this.command = command;
}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * <p>Return the Command to process for this Context.</p>
 *
 * @param context The Context we are processing
 * @return The Command to process for this Context
 */
protected Command getCommand(Context context) {
    CatalogFactory catalogFactory = CatalogFactory.getInstance();
    String catalogName = getCatalogName();
    Catalog catalog;

    if (catalogName == null) {
        catalog = catalogFactory.getCatalog();
        catalogName = "{default}"; // for debugging purposes
    } else {
        catalog = catalogFactory.getCatalog(catalogName);
    }

    if (catalog == null) {
        throw new IllegalArgumentException("Cannot find catalog '"
            + catalogName + "'");
    }

    Command command;
    String name = getName();

    if (name == null) {
        name = (String) context.get(getNameKey());
    }

    if (name != null) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Lookup command " + name + " in catalog "
                + catalogName);
        }

        command = catalog.getCommand(name);

        if (LOG.isDebugEnabled()) {
            LOG.debug("Found command " + command + ";" + " optional: "
                + isOptional());
        }

        if ((command == null) && !isOptional()) {
            throw new IllegalArgumentException("Cannot find command " + "'"
                + name + "' in catalog '" + catalogName + "'");
        } else {
            return command;
        }
    } else {
        throw new IllegalArgumentException("No command name");
    }
}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * <p> Return the command to be executed if an exception occurs. </p>
 *
 * @return The command to be executed if an exception occurs
 * @throws IllegalArgumentException If catalog cannot be found
 * @throws IllegalStateException    If command property is not specified
 */
protected Command lookupExceptionCommand() {
    String catalogName = getCatalogName();
    Catalog catalog;

    if (catalogName == null) {
        catalog = CatalogFactory.getInstance().getCatalog();

        if (catalog == null) {
            LOG.error("Cannot find default catalog");
            throw new IllegalArgumentException(
                "Cannot find default catalog");
        }
    } else {
        catalog = CatalogFactory.getInstance().getCatalog(catalogName);

        if (catalog == null) {
            LOG.error("Cannot find catalog '" + catalogName + "'");
            throw new IllegalArgumentException("Cannot find catalog '"
                + catalogName + "'");
        }
    }

    String exceptionCommand = getExceptionCommand();

    if (exceptionCommand == null) {
        LOG.error("No exceptionCommand property specified");
        throw new IllegalStateException(
            "No exceptionCommand property specfied");
    }

    return catalog.getCommand(exceptionCommand);
}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
public static Command getCommand(String commandID) throws IllegalArgumentException 
{
    // XXX: This function taken from CVS version of CatalogFactory
    String DELIMITER = ":";
    String commandName = commandID;
    String catalogName = null;
    Catalog catalog = null;

    if (commandID != null) 
    {
        int splitPos = commandID.indexOf(DELIMITER);
        if (splitPos != -1) 
        {
            catalogName = commandID.substring(0, splitPos);
            commandName = commandID.substring(splitPos + DELIMITER.length());
            if (commandName.indexOf(DELIMITER) != -1) 
            {
                throw new IllegalArgumentException("commandID [" + commandID + "] has too many delimiters (reserved for future use)");
            }
        }
    }

    if (catalogName != null) 
    {
        catalog = factory.getCatalog(catalogName);
        if (catalog == null) 
        {
            RadiusLog.warn("No catalog found for name: " + catalogName + ".");
            return null;
        }
    } 
    else 
    {
        catalog = factory.getCatalog();
        if (catalog == null) 
        {
            RadiusLog.warn("No default catalog found.");
            return null;
        }
    }

    return catalog.getCommand(commandName);                    
}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * Test that when supplied with a known set of exchanges,
 * an identical set of exchanges is written to the HDF5 
 * file.
 */
@Test
public void testListExchangesCommand() {

  try {
    
    UnitTestData testData = new UnitTestData();
    
    EodDataProvider eodDataProvider = new EodDataProviderMock(testData);
    EodDataSink eodDataSink = new EodDataSinkEmptyMock(testData);

    CommandContext context = new CommandContext();
  
    context.put(CommandContext.EODDATAPROVIDER_KEY, eodDataProvider);
    context.put(CommandContext.EODDATASINK_KEY, eodDataSink);

    context.put(CommandContext.EXCHANGE_KEY, testData.getTestExchange());
    context.put(CommandContext.SYMBOL_KEY, testData.getTestSymbol());

    Command command = new ListExchangesCommand();
    command.execute(context);

  } catch (Exception e) {

    fail(e.getMessage());

  }

}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * Test
 */
@Test
public void testUpdateExchangeQuotesCommand_EmptySink() {

	try {

		UnitTestData testData = new UnitTestData();

		EodDataProvider eodDataProvider = new EodDataProviderMock(testData);
		EodDataSink eodDataSink = new EodDataSinkEmptyMock(testData);
		EmailService emailService = new EmailServiceMock();

		CommandContext context = new CommandContext();

		// context.put(CommandContext.EODDATAPROVIDER_KEY, eodDataProvider);
		// context.put(CommandContext.EODDATASINK_KEY, eodDataSink);

		context.put(CommandContext.EXCHANGE_KEY, testData.getTestExchange());
		context.put(CommandContext.SYMBOL_KEY, testData.getTestSymbol());

		Command command = new UpdateExchangeQuotesCommand(
				Executors.newSingleThreadExecutor(), eodDataProvider,
				eodDataSink, emailService);

		command.execute(context);

	} catch (Throwable t) {

		t.printStackTrace();
		fail(t.getCause().toString());

	}

}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * Test
 */
@Test
public void testUpdateExchangeQuotesCommand_OneDayOrLessAvailable() {

	try {

		UnitTestData testData = new UnitTestData();

		EodDataProvider eodDataProvider = new EodDataProviderOneDayAvailableMock(
				testData);
		EodDataSink eodDataSink = new EodDataSinkFirstElementLessThanOneDayAfterFirstAvailable(
				testData);
		EmailService emailService = new EmailServiceMock();

		CommandContext context = new CommandContext();

		// context.put(CommandContext.EODDATAPROVIDER_KEY, eodDataProvider);
		// context.put(CommandContext.EODDATASINK_KEY, eodDataSink);

		context.put(CommandContext.EXCHANGE_KEY, testData.getTestExchange());
		context.put(CommandContext.SYMBOL_KEY, testData.getTestSymbol());

		Command command = new UpdateExchangeQuotesCommand(
				Executors.newSingleThreadExecutor(), eodDataProvider,
				eodDataSink, emailService);

		command.execute(context);

	} catch (Throwable t) {

		t.printStackTrace();
		fail(t.getCause().getMessage());

	}

}
 

import org.apache.commons.chain.Command; //导入依赖的package包/类
/**
 * Test
 */
@Test
public void testUpdateExchangeSymbolQuotesCommand_EmptySink() {

	try {

		UnitTestData testData = new UnitTestData();

		EodDataProvider eodDataProvider = new EodDataProviderMock(testData);
		EodDataSink eodDataSink = new EodDataSinkEmptyMock(testData);

		CommandContext context = new CommandContext();

		context.put(CommandContext.EODDATAPROVIDER_KEY, eodDataProvider);
		context.put(CommandContext.EODDATASINK_KEY, eodDataSink);

		context.put(CommandContext.EXCHANGE_KEY, testData.getTestExchange());
		context.put(CommandContext.SYMBOL_KEY, testData.getTestSymbol());

		Command command = new UpdateExchangeSymbolQuotesCommand();

		command.execute(context);

	} catch (Throwable t) {

		fail(t.toString());

	}

}