Example: Caching a command object

This example of command caching is a simple stock quote command.


Usage scenario

public class QuoteCommand extends CacheableCommandImpl
    private String ticker;
    private double price;
    // called to validate that command input parameters have been set
    public boolean isReadyToCallExecute() {
      return (ticker!=null);
    // called by a cache-hit to copy output properties to this object
    public void setOutputProperties TargetableCommand(fromCommand) {
        QuoteCommand f = (QuoteCommand)fromCommand;
        this.price = f.price;

   // business logic method called when the stock price must be retrieved
    public void performExecute()throws Exception {...}

    //input parameters for the command
    public void setTicker String(ticker) { this.ticker=ticker;}
    public String getTicker() { return ticker;}

    //output parameters for the command
    public double getPrice()  { return price;};


Usage scenario

                <component type="method" id="getTicker">


See Also

Configuring command caching