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DpmModel.java
DpmModel provides data access for a single customer at a time. DpmModel manages creation of the customer object, and creates and calls a portfolio manager object to set up the account information for that customer. The customer owns the account object, but the model provides access to it.
Create a portfolio manager to use to initialize customer accounts | public class DpmModel extends Model // public DpmModel() { portManager = new PortManagerImpl(); setup(); } |
Specifies the file extension for saved DpmModel objects | public String getFileExtension() { return new String("dpm"); } |
Streams in and initializes a DpmModel object | private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException { in.defaultReadObject(); setup(); } |
Initializes a customer object, including the associated account information | public void setup() { customer = new CustomerImpl(); Account acct = portManager.customerLogon( "guest", "guest", customer, true); customer.setAccount( acct); } |
Portfolio access functions delegate to the customer object | public PortRecord getPortRecord( String symbol) { return customer.getAccount().getPortRecord(symbol); } public PortRecord getPortRecord( int index) { return customer.getAccount().getPortRecord(index); } public int getPortRecordCount() { return customer.getAccount().getPortRecordCount(); } public float getCashAvailable() { return customer.getAccount().getCashAvailable(); } public float getSecuritiesValue() { return customer.getAccount().getSecuritiesValue(); } public float getEquityValue() { float equity = getSecuritiesValue() + customer.getAccount().getCashAvailable(); return equity; } public void setCashAvailable( float amount) { customer.getAccount().setCashAvailable( amount); setModelChanged(true); notifyOfModelChange(null); } public CustomerImpl getCustomer() { return customer; } public void setCustomer(CustomerImpl customer) { this.customer = customer; } |
Maintains a customer and a portfolio manager object | private transient CustomerImpl customer; private PortManagerImpl portManager; } |
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