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Let s move on to defining which table structures are involved. Since we are only searching against the categoryId, name, and description, we will require only the Product table to fulfill our requirements (figure 8.3). The Product table contains all of the individual product information that we will need for search and display.

Figure 1-3. Open File Security Warning dialog when running the installation file Click the Run button to start the installation process. The next dialog window to appear (shown in Figure 1-4) will be the initial SQL Server Modeling installation window. This gives you two choices: Install Now or Customize. If you are running the SQL Server Modeling install for the first time, click the Install Now option.

For starters we will construct some static SQL that will select all the necessary fields we will need to display in our search results. Listing 8.8 shows the static query we have assembled to accomplish the display of product information.

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Slicing is a very powerful feature, and it is made even more powerful by the fact that you can assign to slices: >>> name = list('Perl') >>> name ['P', 'e', 'r', 'l'] >>> name[2:] = list('ar') >>> name ['P', 'e', 'a', 'r'] So you can assign to several positions at once. You may wonder what the big deal is. Couldn t you just have assigned to them one at a time Sure, but when you use slice assignments, you may also replace the slice with a sequence whose length is different from that of the original: >>> name = list('Perl') >>> name[1:] = list('ython') >>> name ['P', 'y', 't', 'h', 'o', 'n'] Slice assignments can even be used to insert elements without replacing any of the original ones: >>> >>> >>> [1, numbers = [1, 5] numbers[1:1] = [2, 3, 4] numbers 2, 3, 4, 5]

WHERE lower(name) like 'adventure%' OR lower(categoryid) like 'adventure%' OR lower(description) like 'adventure%' OR lower(name) like 'Deus%' OR lower(categoryid) like 'deus%' OR lower(description) like 'deus%'

Here, I basically replaced an empty slice, thereby really inserting a sequence. You can do the reverse to delete a slice: >>> [1, >>> >>> [1, numbers 2, 3, 4, 5] numbers[1:4] = [] numbers 5]

We have now defined our input, output, and table, and it is time to mock up our SQL statement. Once you have the previous information it is quite simple to construct your SQL. The SELECT statement will fulfill our need to return a list of products. The WHERE clause provides the needed criteria for querying based on the supplied terms again the name, categoryId, and description.

Figure 1-4. SQL Server Modeling initial installation window After clicking Install Now, you should next see the Usage Reporting window, as shown in Figure 1-5.

Let s examine our mocked-up SQL statement so we can dissect it and determine where we need to introduce dynamic tags. Since the SELECT clause is static, we will not need to make any dynamic alterations to it. The WHERE clause is where we will have to make dynamic adjustments. Listing 8.9 shows the SQL that we will be looking at.

As you may have guessed, this last example is equivalent to del numbers[1:4]. (Now why don t you try a slice assignment with a step size different from 1 Perhaps even a negative one )

<select id="searchProductList" resultClass="product" > SELECT PRODUCTID, NAME, DESCRIPTION, IMAGE, CATEGORYID FROM PRODUCT <dynamic prepend="WHERE"> <iterate property="keywordList" conjunction="OR"> lower(name) like lower(#keywordList[]#) OR lower(categoryid) like lower(#keywordList[]#) OR lower(description) like lower(#keywordList[]#) </iterate> </dynamic> </select>

Figure 1-5. Usage Reporting window Check or uncheck the box, according to whether you would like to participate in the Customer Experience Improvement Program, then click the Continue button. The next step is to accept the End User License Agreement (shown in Figure 1-6). Read the agreement and (if you agree) click the I Accept button.

Since the dynamic tags utilize the parameter that is passed into the mapped statement, we need to consider what it is here and how we will use the dynamic tags with it. The parameter that will be provided to the mapped statement is a List of

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