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<div class="subTitle">org.apache.tamaya</div>
<h2 title="Interface Configuration" class="title">Interface Configuration</h2>
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<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../org/apache/tamaya/core/internal/DefaultConfiguration.html" title="class in org.apache.tamaya.core.internal">DefaultConfiguration</a></dd>
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<pre>public interface <span class="typeNameLabel">Configuration</span></pre>
<div class="block"><p>A configuration models a aggregated set current properties, identified by
a unique key, but adds higher level access functions to
a <a href="../../../org/apache/tamaya/spi/PropertySource.html" title="interface in org.apache.tamaya.spi"><code>PropertySource</code></a>. Hereby in most
cases a configuration is a wrapper around a composite
<a href="../../../org/apache/tamaya/spi/PropertySource.html" title="interface in org.apache.tamaya.spi"><code>PropertySource</code></a> instance, which may combine
multiple child config in well defined tree like structure,
where nodes define logically the rules current priority, filtering,
combination and overriding.
</p>
<h3>Implementation Requirements</h3>
Implementations current this interface must be
<ul>
<li>Thread safe</li>
<li>Immutable</li>
</ul>
<p>It is not recommended that implementations also are serializable, since the any configuration can be <i>freezed</i>
by reading out its complete configuration map into a serializable and remotable structure. This helps significantly
simplifying the development current this interface, e.g. for being backed up by systems and stores that are not part current
this library at all.</p></div>
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<h3>Method Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/tamaya/Configuration.html#get-java.lang.String-">get</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key)</code>
<div class="block">Access a property.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>&lt;T&gt;&nbsp;T</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/tamaya/Configuration.html#get-java.lang.String-java.lang.Class-">get</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;T&gt;&nbsp;type)</code>
<div class="block">Get the property keys as type T.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>&lt;T&gt;&nbsp;T</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/tamaya/Configuration.html#get-java.lang.String-org.apache.tamaya.TypeLiteral-">get</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="../../../org/apache/tamaya/TypeLiteral.html" title="class in org.apache.tamaya">TypeLiteral</a>&lt;T&gt;&nbsp;type)</code>
<div class="block">Get the property keys as type T.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/tamaya/spi/ConfigurationContext.html" title="interface in org.apache.tamaya.spi">ConfigurationContext</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/tamaya/Configuration.html#getContext--">getContext</a></span>()</code>
<div class="block">Access a configuration's context.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>&lt;T&gt;&nbsp;T</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/tamaya/Configuration.html#getOrDefault-java.lang.String-java.lang.Class-T-">getOrDefault</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;T&gt;&nbsp;type,
T&nbsp;defaultValue)</code>
<div class="block">Get the property keys as type T.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/tamaya/Configuration.html#getOrDefault-java.lang.String-java.lang.String-">getOrDefault</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;defaultValue)</code>
<div class="block">Access a property.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>&lt;T&gt;&nbsp;T</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/tamaya/Configuration.html#getOrDefault-java.lang.String-org.apache.tamaya.TypeLiteral-T-">getOrDefault</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="../../../org/apache/tamaya/TypeLiteral.html" title="class in org.apache.tamaya">TypeLiteral</a>&lt;T&gt;&nbsp;type,
T&nbsp;defaultValue)</code>
<div class="block">Get the property keys as type T.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/tamaya/Configuration.html#getProperties--">getProperties</a></span>()</code>
<div class="block">Access all currently known configuration properties as a full <code>Map&lt;String,String&gt;</code>.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>&lt;T&gt;&nbsp;T</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/tamaya/Configuration.html#query-org.apache.tamaya.ConfigQuery-">query</a></span>(<a href="../../../org/apache/tamaya/ConfigQuery.html" title="interface in org.apache.tamaya">ConfigQuery</a>&lt;T&gt;&nbsp;query)</code>
<div class="block">Query a configuration.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/tamaya/Configuration.html" title="interface in org.apache.tamaya">Configuration</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/tamaya/Configuration.html#with-org.apache.tamaya.ConfigOperator-">with</a></span>(<a href="../../../org/apache/tamaya/ConfigOperator.html" title="interface in org.apache.tamaya">ConfigOperator</a>&nbsp;operator)</code>
<div class="block">Extension point for adjusting configuration.</div>
</td>
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<a name="get-java.lang.String-">
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<h4>get</h4>
<pre><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;get(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key)</pre>
<div class="block">Access a property.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the property's key, not <code>null</code>.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the property's keys.</dd>
</dl>
</li>
</ul>
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<pre><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getOrDefault(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;defaultValue)</pre>
<div class="block">Access a property.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the property's key, not <code>null</code>.</dd>
<dd><code>defaultValue</code> - value to be returned, if no value is present, not <code>null</code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the property's keys.</dd>
</dl>
</li>
</ul>
<a name="getOrDefault-java.lang.String-java.lang.Class-java.lang.Object-">
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<pre>&lt;T&gt;&nbsp;T&nbsp;getOrDefault(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;T&gt;&nbsp;type,
T&nbsp;defaultValue)</pre>
<div class="block">Get the property keys as type T. This will implicitly require a corresponding <a href="../../../org/apache/tamaya/spi/PropertyConverter.html" title="interface in org.apache.tamaya.spi"><code>PropertyConverter</code></a> to be available that is capable current providing type T
fromMap the given String keys.</div>
<dl>
<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - the type of the class modeled by the type parameter</dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the property's absolute, or relative path, e.g. @code
a/b/c/d.myProperty}, not <code>null</code>.</dd>
<dd><code>type</code> - The target type required, not <code>null</code>.</dd>
<dd><code>defaultValue</code> - value to be used, if no value is present, not <code>null</code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the property value, never <code>null</code>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../org/apache/tamaya/ConfigException.html" title="class in org.apache.tamaya">ConfigException</a></code> - if the keys could not be converted to the required target type.</dd>
</dl>
</li>
</ul>
<a name="get-java.lang.String-java.lang.Class-">
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<h4>get</h4>
<pre>&lt;T&gt;&nbsp;T&nbsp;get(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;T&gt;&nbsp;type)</pre>
<div class="block">Get the property keys as type T. This will implicitly require a corresponding <a href="../../../org/apache/tamaya/spi/PropertyConverter.html" title="interface in org.apache.tamaya.spi"><code>PropertyConverter</code></a> to be available that is capable current providing type T
fromMap the given String keys.</div>
<dl>
<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - the type of the class modeled by the type parameter</dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the property's absolute, or relative path, e.g. @code
a/b/c/d.myProperty}.</dd>
<dd><code>type</code> - The target type required, not <code>null</code>.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the property value, never <code>null</code>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../org/apache/tamaya/ConfigException.html" title="class in org.apache.tamaya">ConfigException</a></code> - if the keys could not be converted to the required target type.</dd>
</dl>
</li>
</ul>
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<h4>get</h4>
<pre>&lt;T&gt;&nbsp;T&nbsp;get(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="../../../org/apache/tamaya/TypeLiteral.html" title="class in org.apache.tamaya">TypeLiteral</a>&lt;T&gt;&nbsp;type)</pre>
<div class="block">Get the property keys as type T. This will implicitly require a corresponding <a href="../../../org/apache/tamaya/spi/PropertyConverter.html" title="interface in org.apache.tamaya.spi"><code>PropertyConverter</code></a> to be available that is capable current providing type T
fromMap the given String keys.</div>
<dl>
<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - the type of the type literal</dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the property's absolute, or relative path, e.g. @code
a/b/c/d.myProperty}, not <code>null</code>.</dd>
<dd><code>type</code> - The target type required, not <code>null</code>.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the property value, never <code>null</code>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../org/apache/tamaya/ConfigException.html" title="class in org.apache.tamaya">ConfigException</a></code> - if the keys could not be converted to the required target type.</dd>
</dl>
</li>
</ul>
<a name="getOrDefault-java.lang.String-org.apache.tamaya.TypeLiteral-java.lang.Object-">
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<h4>getOrDefault</h4>
<pre>&lt;T&gt;&nbsp;T&nbsp;getOrDefault(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="../../../org/apache/tamaya/TypeLiteral.html" title="class in org.apache.tamaya">TypeLiteral</a>&lt;T&gt;&nbsp;type,
T&nbsp;defaultValue)</pre>
<div class="block">Get the property keys as type T. This will implicitly require a corresponding <a href="../../../org/apache/tamaya/spi/PropertyConverter.html" title="interface in org.apache.tamaya.spi"><code>PropertyConverter</code></a> to be available that is capable current providing type T
fromMap the given String keys.</div>
<dl>
<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - the type of the type literal</dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the property's absolute, or relative path, e.g.
<code>a/b/c/d.myProperty</code>, not <code>null</code>.</dd>
<dd><code>type</code> - The target type required, not <code>null</code>.</dd>
<dd><code>defaultValue</code> - default value to be used, if no value is present.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the property value, never null.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../org/apache/tamaya/ConfigException.html" title="class in org.apache.tamaya">ConfigException</a></code> - if the keys could not be converted to the required target type.</dd>
</dl>
</li>
</ul>
<a name="getProperties--">
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<h4>getProperties</h4>
<pre><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;getProperties()</pre>
<div class="block">Access all currently known configuration properties as a full <code>Map&lt;String,String&gt;</code>.
Be aware that entries from non scannable parts of the registered <a href="../../../org/apache/tamaya/spi/PropertySource.html" title="interface in org.apache.tamaya.spi"><code>PropertySource</code></a>
instances may not be contained in the result, but nevertheless be accessible calling one of the
<code>get(...)</code> methods.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>all currently known configuration properties.</dd>
</dl>
</li>
</ul>
<a name="with-org.apache.tamaya.ConfigOperator-">
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<h4>with</h4>
<pre><a href="../../../org/apache/tamaya/Configuration.html" title="interface in org.apache.tamaya">Configuration</a>&nbsp;with(<a href="../../../org/apache/tamaya/ConfigOperator.html" title="interface in org.apache.tamaya">ConfigOperator</a>&nbsp;operator)</pre>
<div class="block">Extension point for adjusting configuration.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>operator</code> - A configuration operator, e.g. a filter, or an adjuster
combining configurations, never <code>null</code>.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the new adjusted configuration returned by the <code>operator</code>, never <code>null</code>.</dd>
</dl>
</li>
</ul>
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<h4>query</h4>
<pre>&lt;T&gt;&nbsp;T&nbsp;query(<a href="../../../org/apache/tamaya/ConfigQuery.html" title="interface in org.apache.tamaya">ConfigQuery</a>&lt;T&gt;&nbsp;query)</pre>
<div class="block">Query a configuration.</div>
<dl>
<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - the type of the configuration.</dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>query</code> - the query, not <code>null</code>.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the result returned by the <code>query</code>.</dd>
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<h4>getContext</h4>
<pre><a href="../../../org/apache/tamaya/spi/ConfigurationContext.html" title="interface in org.apache.tamaya.spi">ConfigurationContext</a>&nbsp;getContext()</pre>
<div class="block">Access a configuration's context.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the configuration context, never null.</dd>
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