diff options
Diffstat (limited to 'demos/sqlmap-docs/protected/pages/Manual/ResultMapAttributes.page')
| -rw-r--r-- | demos/sqlmap-docs/protected/pages/Manual/ResultMapAttributes.page | 132 | 
1 files changed, 0 insertions, 132 deletions
| diff --git a/demos/sqlmap-docs/protected/pages/Manual/ResultMapAttributes.page b/demos/sqlmap-docs/protected/pages/Manual/ResultMapAttributes.page deleted file mode 100644 index dd754197..00000000 --- a/demos/sqlmap-docs/protected/pages/Manual/ResultMapAttributes.page +++ /dev/null @@ -1,132 +0,0 @@ -<com:TContent ID="body">
 -
 -<h1>Result Map  Attributes</h1>
 -<p>The <tt><resultMap></tt> element accepts three attributes: <tt>id</tt> (required),
 -<tt>class</tt> (optional), and <tt>extends</tt> (optional).</p>
 -
 -<h2><tt>id</tt> attribute</h2>
 -<p>The required <tt>id</tt> attribute provides a unique identifier for the
 -<tt><resultMap></tt> within this Data Map.</p>
 -
 -<h2><tt>class</tt> attribute</h2>
 -<p>The optional <tt>class</tt> attribute specifies an object class to use with this
 -<tt><resultMap></tt>. The full classname must be specified. Any class can be used.</p>
 -
 -<div class="note"><b class="tip">Note:</b>
 -As with parameter classes, the result class must be a PHP class object or
 -array instance.
 -</div>
 -
 -<h2><tt>extends</tt> attribute</h2>
 -<p>The optional <tt>extends</tt> attribute allows the result map to inherit all of
 -the properties of the "parent" <tt>resultMap</tt> that it extends.</p>
 -
 -<h1><tt><result></tt> Element attributes</h1>
 -
 -<p>The <tt><resultMap></tt> element holds one or more <tt><result></tt> child elements
 -that map SQL result sets to object properties.</p>
 -
 -<h2><tt>property</tt> attribute</h2>
 -<p>The <tt>property</tt> attribute is the name of a property of the result object
 -that will be returned by the Mapped Statement. The name can be used more than
 -once depending on the number of times it is needed to populate the results.</p>
 -
 -<h2><tt>column</tt> attribute</h2>
 -<p>The <tt>column</tt> attribute value is the name of the column in the result set
 -from which the value will be used to populate the property.</p>
 -
 -<h2><tt>columnIndex</tt> attribute</h2>
 -<p>The <tt>columnIndex</tt> attribute value is the index of the column in the
 -ResultSet from which the value will be used to populate the object property.
 -This is not likely needed in 99\% of applications and sacrifices
 -maintainability and readability for speed. Some providers may not realize any
 -performance benefit, while others will speed up dramatically.</p>
 -
 -<h2><tt>dbType</tt> attribute</h2>
 -<p>The <tt>dbType</tt> attribute is used to explicitly specify the database column
 -type of the ResultSet column that will be used to populate the object
 -property. Although Result Maps do not have the same difficulties with null
 -values, specifying the type can be useful for certain mapping types such as
 -Date properties. Because an application language has one Date value type and
 -SQL databases may have many (usually at least 3), specifying the date may
 -become necessary in some cases to ensure that dates (or other types) are set
 -correctly. Similarly, String types may be populated by a <tt>VarChar</tt>,
 -<tt>Char</tt> or <tt>CLOB</tt>, so specifying the type might be needed in those cases
 -too.</p>
 -
 -<h2><tt>type</tt> attribute</h2>
 -<p>The <tt>type</tt> attribute is used to explicitly specify the property type of the
 -parameter to be set. If the attribute <tt>type</tt> is not set and the framework
 -cannot otherwise determine the type, the type is assumed to be <tt>StdObject</tt>.</p>
 -
 -<h2><tt>resultMapping</tt> attribute</h2>
 -<p>The <tt>resultMapping</tt> attribute can be set to the name of another
 -<tt>resultMap</tt> used to fill the property. If the <tt>resultMap</tt> is in an other
 -mapping file, you must specified the fully qualified name as :</p>
 -
 -<com:TTextHighlighter Language="xml" CssClass="source">
 -resultMapping="[namespace.sqlMap.]resultMappingId"
 -
 -resultMapping="Newspaper"
 -<!--resultMapping with a fully qualified name.-->
 -resultMapping="LineItem.LineItem"
 -</com:TTextHighlighter>
 -
 -<h2><tt>nullValue</tt> attribute</h2>
 -<p>The <tt>nullValue</tt> attribute can be set to any valid value (based on property
 -type). The <tt>nullValue</tt> attribute is used to specify an outgoing null value
 -replacement. What this means is that when the value is detected in the object
 -property, a NULL will be written to the database (the opposite behavior of an
 -inbound null value replacement). This allows you to use a "magic" null
 -number in your application for types that do not support null values (such as
 -int, double, float). When these types of properties contain a matching null
 -value (say, -9999), a NULL will be written to the database instead of the
 -value.</p>
 -
 -<p>If your database has a NULLABLE column, but you want your application to
 -represent NULL with a constant value, you can specify it in the Result Map as
 -shown in the following example.</p>
 -
 -<com:TTextHighlighter Language="xml" CssClass="source">
 -<resultMap id="get-product-result" class="product">
 -  <result property="id" column="PRD_ID"/>
 -  <result property="description" column="PRD_DESCRIPTION"/>
 -  <result property="subCode" column="PRD_SUB_CODE" nullValue="-9999"/>
 -</resultMap>
 -</com:TTextHighlighter>
 -
 -<p>In the above example, <tt>PRD_SUB_CODE</tt> is read as <tt>NULL</tt>, then the
 -<tt>subCode</tt> property will be set to the value of -9999. This allows you to
 -use a primitive type to represent a <tt>NULLABLE</tt> column in the database. Remember
 -that if you want this to work for queries as well as updates/inserts, you must
 -also specify the <tt>nullValue</tt> in the <a href="?page=ParameterMaps">Parameter Map</a>.
 -</p>
 -
 -<h2><tt>select</tt> attribute</h2>
 -<p>The <tt>select</tt> attribute is used to describe a relationship between objects
 -and to automatically load complex (i.e. user defined) property types. The
 -value of the statement property must be the name of another mapped statement.
 -The value of the database column (the column attribute) that is defined in the
 -same property element as this statement attribute will be passed to the
 -related mapped statement as the parameter. More information about supported
 -primitive types and complex property mappings/relationships is discussed later
 -in this document. The <tt>lazyLoad</tt> attribute can be specified with the
 -<tt>select</tt>.</p>
 -
 -<h2><tt>lazyLoad</tt> attribute</h2>
 -<p>Use the <tt>lazyLoad</tt> attribute with the <tt>select</tt> attribute to indicate
 -whether or not the select statement's results should be lazy loaded. This can
 -provide a performance boost by delaying the loading of the select statement's
 -results until they are needed/accessed.</p>
 -
 -<h2><tt>typeHandler</tt> attribute</h2>
 -<p>The <tt>typeHandler</tt> attribute allows the use of a 
 -<a href="?page=Manual.CustomTypeHandlers">Custom Type Handler</a>. 
 -This allows you to extend
 -the DataMapper's capabilities in handling types that are specific to your
 -database provider, are not handled by your database provider, or just happen
 -to be a part of your application design. You can create custom type handlers
 -to deal with storing and retrieving booleans from your database for example.
 -</p>
 -
 -</com:TContent>
\ No newline at end of file | 
