Web Services Essentials

Service Code

The next step is to write the service code. (See Example 5-4.) The ProductService constructor creates two sample ProductBeans and loads these into the product hashtable. The getProduct( ) method searches for a specific SKU string and returns the corresponding ProductBean. Again, we assume that the user always specifies a valid, current SKU.

Example 5-4. ProductService.java

package com.ecerami.soap;

import java.util.Hashtable;

/**
 * A Sample SOAP Service
 * Provides Product Information for requested Stockkeeping Unit (SKU)
 */
public class ProductService {
  protected Hashtable products;   // Product "Database"

  /**
   * Constructor
   * Load product database with two sample products
   */
  public ProductService (  ) {
    products = new Hashtable(  );
    ProductBean product1 = new ProductBean
      ("Red Hat Linux", "Red Hat Linux Operating System",
      54.99, "A358185");
    ProductBean product2 = new ProductBean
      ("McAfee PGP", "McAfee PGP Personal Privacy",
      19.99, "A358565");
    products.put(product1.getSKU(  ), product1);
    products.put(product2.getSKU(  ), product2);
  }

  /**
  *  Provides Product Info for requested SKU.
  *  We assume that the client always specifies a valid, current SKU
  */
  public ProductBean getProduct (String sku) {
    ProductBean product = (ProductBean) products.get(sku);
    return product;
  }
}

You can deploy the ProductService in the same manner as in the previous examples. Nonetheless, you will need to fill in a few additional fields of information for the type-mapping registry. The Apache SOAP type-mapping ...