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Example 17
shows the code for finding all bids on a particular item
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Note that the return type is java.util.Enumeration
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The contents of the enumeration are the primary keys for the Bids found in the
method
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The primary keys are accumulated in a vector since there is no implementation
of Enumeration that permits construction of the enumerated set
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The code consists of two main parts:
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Construct a query that retrieves rows from the Bid table
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The primary key of the given Item is used to form the where clause of
the query
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Transfer primary key data from the results of the query to the vector
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At the end, the elements() method of the vector allows an Enumeration of the
keys to be easily returned
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