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Add note on precedence rules for PropertyFileVariableSource

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This commit is contained in:
Marijn van der Zee
2011-12-29 15:46:43 +01:00
parent 7039d76bd8
commit 7635db2a6f
1 changed files with 14 additions and 3 deletions
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17
doc/reference/src/objects.xml
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@@ -5091,8 +5091,9 @@ joan_age=35</programlisting>
<literal>${joan_age}</literal> variables in your object definitions
if you configure the following variable source:</para>
<para><programlisting>&lt;object type="Spring.Objects.Factory.Config.PropertyFileVariableSource, Spring.Core"&gt;
&lt;property name="Location" value="~\application.properties" /&gt;
<para><programlisting language="myxml">&lt;object type="Spring.Objects.Factory.Config.PropertyFileVariableSource, Spring.Core"&gt;
&lt;property name="Location" value="~\application.properties" /&gt; &lt;!-- specify a single ... --&gt;
&lt;property name="Locations" value="~\file1.properties,~\file2.properties" /&gt; &lt;!-- or multiple locations --&gt;
&lt;property name="IgnoreMissingResources" value="true"/&gt;
&lt;/object&gt;</programlisting></para>
@@ -5103,12 +5104,22 @@ joan_age=35</programlisting>
the next variable source(s) of the
<literal>VariablePlaceholderConfigurer</literal>.</para>
</note></para>
<para>Within <literal>PropertyFileVariableSource</literal>s,
precedence rules differ from the configuration of
<literal>VariableSource</literal>s in the
<literal>VariablePlaceholderConfigurer</literal>. When the same
property occurs more than once in a property file, the value of the
<emphasis>last</emphasis> entry will be used. Same goes for
specifying the same variable in more than one location in a single
<literal>PropertyFileVariableSource</literal>: the entry from the
last file will be used.</para>
</sect4>
<sect4>
<title><literal>ConfigurableVariableSource</literal></title>
<para>A <literal>ConfigurableVariableSource</literal> allows you
<para>A <literal>ConfigurableVariableSource</literal> allows you to
define variables in-line in a variable source definition. To
configure the variables <literal>${midge_name}</literal> and
<literal>${midge_age}</literal>, you can use the following