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diff --git a/docs/sqlmap/latex/tut3.tex b/docs/sqlmap/latex/tut3.tex new file mode 100644 index 00000000..4e16ab28 --- /dev/null +++ b/docs/sqlmap/latex/tut3.tex @@ -0,0 +1,227 @@ +\section{Test, test, again ...}
+Of course, tweaking the Person List display is not going to be the end of it.
+Clients always want more, and now ours wants to edit, add, or delete records.
+Let's write some tests for these new tasks, as shown in
+Example~\ref{example:9}.
+
+\begin{example}\label{example:9}
+New stories, new tests
+\begin{verbatim}
+ function testPersonUpdate()
+ {
+ $expect = "wei";
+ $edited = "Nah";
+
+ //get it;
+ $person = TMapper::instance()->queryForObject("Select", 1);
+
+ //test it
+ $this->assertNotNull($person);
+ $this->assertEqual($expect, $person->FirstName);
+
+ //change it
+ $person->FirstName = $edited;
+ TMapper::instance()->update("Update", $person);
+
+ //get it again
+ $person = TMapper::instance()->queryForObject("Select", 1);
+
+ //test it
+ $this->assertEqual($edited, $person->FirstName);
+
+ //change it back
+ $person->FirstName = $expect;
+ TMapper::instance()->update("Update", $person);
+ }
+
+ function testPersonDelete()
+ {
+ //insert it
+ $person = new Person;
+ $person->ID = -1;
+ TMapper::instance()->insert("Insert", $person);
+
+ //delte it
+ $count = TMapper::instance()->delete("Delete", -1);
+ $this->assertEqual(1, $count);
+ }
+\end{verbatim}
+\end{example}
+
+Not the best tests ever written, but for now, they will do :)
+
+To make the new tests work, we'll need some new mapping statements.
+Example~\ref{example:10} shows the complete mapper document that we've called
+\tt{personHelper.xml}.
+
+\begin{example}
+The new and improved mapper document
+\begin{verbatim}
+<?xml version="1.0" encoding="utf-8" ?>
+
+<sqlMap Name="PersonHelper">
+ <select id="Select" parameterClass="int" resultClass="Person">
+ select
+ PER_ID as ID,
+ PER_FIRST_NAME as FirstName,
+ PER_LAST_NAME as LastName,
+ PER_BIRTH_DATE as BirthDate,
+ PER_WEIGHT_KG as WeightInKilograms,
+ PER_HEIGHT_M as HeightInMeters
+ from PERSON
+ WHERE
+ PER_ID = #value#
+ </select>
+
+ <insert id="Insert" parameterClass="Person">
+ insert into PERSON
+ (PER_ID, PER_FIRST_NAME, PER_LAST_NAME,
+ PER_BIRTH_DATE, PER_WEIGHT_KG, PER_HEIGHT_M)
+ values
+ (#ID#, #FirstName#, #LastName#,
+ #BirthDate#, #WeightInKilograms#, #HeightInMeters#)
+ </insert>
+
+ <update id="Update" parameterClass="Person">
+ update PERSON set
+ PER_FIRST_NAME = #FirstName#,
+ PER_LAST_NAME = #LastName#,
+ PER_BIRTH_DATE = #BirthDate#,
+ PER_WEIGHT_KG = #WeightInKilograms#,
+ PER_HEIGHT_M = #HeightInMeters#
+ where PER_ID = #ID#
+ </update>
+
+ <delete id="Delete" parameterClass="int">
+ delete from PERSON
+ where PER_ID = #value#
+ </delete>
+</sqlMap>
+\end{verbatim}
+\end{example}
+Well, waddya know, if run our tests now, we are favored with a green bar!. It
+all works!
+
+\begin{mybox}{Note:}
+Though, of course, things usually do not work perfectly the first time! We
+have to fix this and that, and try, try, again. But SimpleTest makes trying
+again quick and easy. You can changes to the XML mapping documents and rerun
+the tests! No muss, no fuss.
+\end{mybox}
+
+Turning back to our Prado page, we can revamp the TDataGrid to allow in-place
+editing and deleting. To add records, we provide a button after the grid that
+inserts a blank person for client to edit. The page code is shown as
+Example~\ref{example:11}.
+\begin{example}\label{example:11}
+Prado page code for our enhanced TDataGrid
+\begin{verbatim}
+ <com:TDataGrid id="personList"
+ DataKeyField="ID"
+ AutoGenerateColumns="False"
+ OnEditCommand="editPerson"
+ OnUpdateCommand="updatePerson"
+ OnCancelCommand="refreshList"
+ OnDeleteCommand="deletePerson">
+ <com:TBoundColumn DataField="FirstName" HeaderText="First Name" />
+ <com:TBoundColumn DataField="LastName" HeaderText="Last Name" />
+ <com:TBoundColumn DataField="HeightInMeters" HeaderText="Height" />
+ <com:TBoundColumn DataField="WeightInKilograms" HeaderText="Weight" />
+ <com:TEditCommandColumn
+ HeaderText="Edit"
+ UpdateText="Save" />
+ <com:TButtonColumn
+ HeaderText="Delete"
+ Text="Delete"
+ CommandName="delete"/>
+ </com:TDataGrid>
+ <com:TButton Text="Add" OnClick="addNewPerson" />
+\end{verbatim}
+\end{example}
+
+Example~\ref{example:12} shows the corresponding methods from page PHP class.
+
+\begin{example}\label{example:12}
+The page class code for our enhanced TDataGrid
+\begin{verbatim}
+ private function sqlmap()
+ {
+ return $this->Application->getModule('SQLMap')->getClient();
+ }
+
+ private function loadData()
+ {
+ $this->personList->DataSource =
+ $this->sqlmap()->queryForList('SelectAll');
+ $this->personList->dataBind();
+ }
+
+ public function onLoad($param)
+ {
+ if(!$this->IsPostBack)
+ $this->loadData();
+ }
+
+ protected function editPerson($sender,$param)
+ {
+ $this->personList->EditItemIndex=$param->Item->ItemIndex;
+ $this->loadData();
+ }
+
+ protected function deletePerson($sender, $param)
+ {
+ $id = $this->getKey($sender, $param);
+ $this->sqlmap()->update("Delete", $id);
+ $this->loadData();
+ }
+
+ protected function updatePerson($sender, $param)
+ {
+ $person = new Person();
+ $person->FirstName = $this->getText($param, 0);
+ $person->LastName = $this->getText($param, 1);
+ $person->HeightInMeters = $this->getText($param, 2);
+ $person->WeightInKilograms = $this->getText($param, 3);
+ $person->ID = $this->getKey($sender, $param);
+ $this->sqlmap()->update("Update", $person);
+ $this->refreshList($sender, $param);
+ }
+
+ protected function addNewPerson($sender, $param)
+ {
+ $person = new Person;
+ $person->FirstName = "-- New Person --";
+ $this->sqlmap()->insert("Insert", $person);
+ $this->loadData();;
+ }
+
+ protected function refreshList($sender, $param)
+ {
+ $this->personList->EditItemIndex=-1;
+ $this->loadData();
+ }
+
+ private function getText($param, $index)
+ {
+ $item = $param->Item;
+ return $item->Cells[$index]->Controls[0]->Text;
+ }
+
+ private function getKey($sender, $param)
+ {
+ return $sender->DataKeys[$param->Item->DataSourceIndex];
+ }
+\end{verbatim}
+\end{example}
+
+OK, we are CRUD complete! There's more we could do here. In particular, we
+should add validation methods to prevent client from entering alphabetic
+characters where only numbers can live. But, that's a different Prado
+tutorial, and this is an SQLMap DataMapper tutorial.
+
+\begin{figure}[!h]
+ \centering
+ \includegraphics[width=0.75\textwidth]{grid2}
+ \caption{Person List CRUD}
+ \label{figure:2}
+\end{figure}
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