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class="page-header"> + <h1>Apache Tamaya&#8201;&#8212;&#8201;Extension: Injection</h1> + </div> + + <p><em>2016-12-18</em></p> + + <p><div id="preamble"> +<div class="sectionbody"> +<!-- toc disabled --> +</div> +</div> +<div class="sect1"> +<h2 id="Core">Tamaya Injection (Extension Module)</h2> +<div class="sectionbody"> +<div class="sect2"> +<h3 id="_overview">Overview</h3> +<div class="paragraph"> +<p>Tamaya Injection is an extension module. Refer to the <a href="modules.html">extensions documentation</a> for further details +about modules.</p> +</div> +<div class="paragraph"> +<p>Tamaya Injection provides functionality for injecting configured values into beans, or creating configuration +template instances.</p> +</div> +<div class="paragraph"> +<p>Inversion of Control (aka IoC/the Hollywood Principle) has proven to be very useful and effective in avoiding boilerplate +code. In Java there are different frameworks available that all provide IoC mechanisms. Unfortunately IoC is not a +built-in language feature. So for a portable solution that works also in Java SE Tamaya itself has to provide the +according injection services. This module adds this functionality to Tamaya.</p> +</div> +</div> +<div class="sect2"> +<h3 id="_compatibility">Compatibility</h3> +<div class="paragraph"> +<p>The module is based on Java 7, so it can be used with Java 7 and beyond.</p> +</div> +</div> +<div class="sect2"> +<h3 id="_installation">Installation</h3> +<div class="paragraph"> +<p>Basically Tamaya’s injection API is deployed as API artifact:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-xml" data-lang="xml"><dependency> + <groupId>org.apache.tamaya.ext</groupId> + <artifactId>tamaya-injection-api</artifactId> + <version>{tamaya_version}</version> +</dependency></code></pre> +</div> +</div> +<div class="paragraph"> +<p>To use injection with Java SE you must add the corresponding dependency to your module:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-xml" data-lang="xml"><dependency> + <groupId>org.apache.tamaya.ext</groupId> + <artifactId>tamaya-injection</artifactId> + <version>{tamaya_version}</version> +</dependency></code></pre> +</div> +</div> +<div class="paragraph"> +<p>Similarly there are other injection implementations available, targetig platforms such as</p> +</div> +<div class="ulist"> +<ul> +<li> +<p>Spring, Spring Boot</p> +</li> +<li> +<p>Java EE/CDI</p> +</li> +<li> +<p>OSGI, Apache Felix/Apache Karaf</p> +</li> +</ul> +</div> +</div> +<div class="sect2"> +<h3 id="_core_concepts">Core Concepts</h3> +<div class="paragraph"> +<p>Basically you annotate fields or methods in your beans with @Config to enable configuration injection. Tamaya +additionally defines further annotations that allo you to define additional aspects such as default values, custom +converters etc. The following example illustrates the basic functionality: +code snippet:</p> +</div> +<div class="listingblock"> +<div class="title">Annotated Example Class</div> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-java" data-lang="java">package foo.bar; + +public class ConfiguredClass { + + // resolved by default, using property name, class and package name: foo.bar.ConfiguredClass.testProperty + private String testProperty; + + // Trying to resolve mutiple keys, with a default value, if none could be resolved + @Config({"a.b.c.key1","a.b.legacyKey",area1.key2"}, defaultValue="The current \\${JAVA_HOME} env property is ${env:JAVA_HOME}.") + String value1; + + // Typical case + @Config("a.b.c.key2") + private int value2; + + // resolved by default as foo.bar.ConfiguredClass.accessUrl + // Using a (default) String -> URL converter + @Config(defaultValue="http://127.0.0.1:8080/res/api/v1/info.json";) + private URL accessUrl; + + // Config injection disabled for this property + @NoConfig + private Integer int1; + + // Overriding the String -> BigDecimal converter with a custom implementation. + @Config("BD") + @WithPropertyConverter(MyBigDecimalRoundingAdapter.class) + private BigDecimal bigNumber; + + ... +}</code></pre> +</div> +</div> +<div class="paragraph"> +<p>When configuring data or configuration classes it is also possible to auto-inject the fields identified. For activating +this feature a class must be annotated with @ConfigAutoInject:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-java" data-lang="java">. An autoinjected bean class +-------------------------------------------- +package a.b;</code></pre> +</div> +</div> +<div class="paragraph"> +<p>@ConfigAutoInject +public final class Tenant { + private int id; + private String name; + private String description; + @NoConfig // prevents auto injection for this field + private String id2;</p> +</div> +<div class="literalblock"> +<div class="content"> +<pre> public int getId(){ + return id; + } + public String getName(){ + return name; + } + public String getDescription(){ + return description; + } +}</pre> +</div> +</div> +<div class="listingblock"> +<div class="content"> +<pre>These examples do not show all possibilities provided. Configuring instance of these +class using Tamaya is very simple: Just pass the instance to Tamaya to let +Tamaya inject the configuration (or throw a +ConfigException+, if this is not possible): + +[source,java] +.Configuring the +ConfiguredClass+ Instance</pre> +</div> +</div> +<div class="paragraph"> +<p>ConfiguredClass classInstance = new ConfiguredClass(); +ConfigurationInjector.configure(configuredClass);</p> +</div> +<div class="paragraph"> +<p>Tenant tenant = new Tenant(); +ConfigurationInjector.configure(tenant);</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>NOTE: Configuration injection works similarly, when used with other integration modules, e.g. when Tamaya is used +with CDI, Spring or within an OSGI container. For further details refer also to the corresponding integration module's +documentation. + + +=== The Annotations in detail +==== The ConfigurationInjector + +The +ConfigurationInjector+ interface provides methods that allow any kind of instances to be configured +by passing the instances to +T ConfigurationInjector.getInstance().configure(T);+. The classes passed +hereby must not be annotated with +@Config+ for being configurable. By default Tamaya +tries to determine configuration for each property of an instance passed, using the following resolution policy: + +Given a class +a.b.MyClass+ and a field +myField+ it would try to look up the following keys: +[source, listing]</pre> +</div> +</div> +<div class="paragraph"> +<p>a.b.MyClass.myField +a.b.MyClass.my-field +MyClass.myField +MyClass.my-field +myField +my-field</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>So given the following properties: + +[source, properties]</pre> +</div> +</div> +<div class="paragraph"> +<p>a.b.Tenant.id=1234 +Tenant.description=Any kind of tenant. +name=<unnamed></p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>==== Accessing Supplier instances + +In many cases you want to create a supplier that simply creates instances that are correctly configured as defined +by the current context. This can be done using +Suppliers+: + +[source, java]</pre> +</div> +</div> +<div class="paragraph"> +<p>Supplier<Tenant> configuredTenantSupplier = ConfigurationInjector.getInstance().getConfiguredSupplier( + new Supplier<Tenant>(){ + public Tenant get(){ + return new Tenant(); + } +});</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>With Java 8 it's even more simple: + +[source, java]</pre> +</div> +</div> +<div class="paragraph"> +<p>Supplier<Tenant> configuredTenantSupplier = ConfigurationInjector.getInstance().getConfiguredSupplier( + Tenant::new);</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>Hereby this annotation can be used in multiple ways and combined with other annotations such as ++@WithLoadPolicy+, +@WithConfigOperator+, +@WithPropertyConverter+. + +==== Minimal Example + +To illustrate the mechanism below the most simple variant of a configured class is given: + +[source,java] +.Most simple configured class</pre> +</div> +</div> +<div class="paragraph"> +<p>pubic class ConfiguredItem{ + @Config + private String aValue; +}</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>When this class is configured, e.g. by passing it to +ConfigurationInjector.getInstance().configure(Object)+, +the following is happening: + +* The current valid +Configuration+ is evaluated by calling +Configuration cfg = ConfigurationProvider.getConfiguration();+ +* The current property value (String) is evaluated by calling +cfg.get("aValue");+ for each possible key (mutliple + keys are possible). +* if not successful, an error is thrown (+ConfigException+) +* On success, since no type conversion is involved, the value is injected. + +==== Using @DefaultValue + +In the next example we explicitly define the property value: +[source,java]</pre> +</div> +</div> +<div class="paragraph"> +<p>pubic class ConfiguredItem{</p> +</div> +<div class="literalblock"> +<div class="content"> +<pre> @Config(value={"aValue", "a.b.value","a.b.deprecated.value"}, defaultValue="${env:java.version}") + private String aValue; +}</pre> +</div> +</div> +<div class="listingblock"> +<div class="content"> +<pre>==== Inject a DynamicValue Property + +Within this example we evaluate a dynamic value. This mechanism allows you to listen for configuration changes and to +commit new values exactly, when convenient for you. + +[source,java]</pre> +</div> +</div> +<div class="paragraph"> +<p>pubic class ConfiguredItem{</p> +</div> +<div class="literalblock"> +<div class="content"> +<pre> @Config(value={"aValue", "a.b.value","a.b.deprecated.value"}, defaultValue="${env:java.version}") + private DynamicValue aValue; +}</pre> +</div> +</div> +<div class="listingblock"> +<div class="content"> +<pre>The +DynamicValue+ provides you the following functionality: + +[source,java]</pre> +</div> +</div> +<div class="paragraph"> +<p>public interface DynamicValue<T> {</p> +</div> +<div class="literalblock"> +<div class="content"> +<pre>enum UpdatePolicy{ + IMMEDIATE, + EXPLCIT, + NEVER, + LOG_AND_DISCARD +}</pre> +</div> +</div> +<div class="literalblock"> +<div class="content"> +<pre>T get(); +T getNewValue(); +T evaluateValue(); +T commitAndGet(); +void commit(); +void discard(); +boolean updateValue();</pre> +</div> +</div> +<div class="literalblock"> +<div class="content"> +<pre>void setUpdatePolicy(UpdatePolicy updatePolicy); +UpdatePolicy getUpdatePolicy(); +void addListener(PropertyChangeListener l); +void removeListener(PropertyChangeListener l);</pre> +</div> +</div> +<div class="literalblock"> +<div class="content"> +<pre>boolean isPresent(); +T orElse(T other); +// Enabled with Java 8 +// T orElseGet(ConfiguredItemSupplier<? extends T> other); +// <X extends Throwable> T orElseThrow(ConfiguredItemSupplier<? extends X> exceptionSupplier) throws X;</pre> +</div> +</div> +<div class="paragraph"> +<p>}</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>Summarizing this class looks somehow similar to the new +Optional+ class added with Java 8. It provides +a wrapper class around a configured instance. Additionally this class provides functionality that gives +active control, to manage a configured value based on a ++LoadingPolicy+: + +* +IMMEDEATE+ means that when the configuration system detects a change on the underlying value, the new value + is automatically applied without any further notice. +* +EXPLICIT+ means that a new configuration value is signalled by setting the +newValue+ property. if +getNewValue()+ + returns a non null value, the new value can be applied by calling +commit()+. You can always access the newest value, + hereby implicitly applying it, by accessing it via +commitAndGet()+. Also it is possible ti ignore a change by calling + +discard()+. +* +NEVER+ means the configured value is evaluated once and never updated. All changes are silently discarded. +* +LOG_AND_DISCARD+ similar to +NEVER+, but changes are logged before they are discarded. + +Summarizing a +DynamicValue+ allows you + +* to reload actively updates of configured values. +* update implicitly or explicitly all changes on the value. +* add listeners that observe changes of a certain value. + +Dynamic values also allow on-the-fly reevaluation of the value by calling +evaluateValue()+. Hereby the value of the +instance is not changed. + + +==== Ommitting Injection using @NoConfig + +Adding the @NoConfig annotation prevents a field or method to be auto-injected from +configuration. This is especially useful, if a type is annotated as @ConfigAutoInject with auto-confiuration +turned on as follows: + +[source,java]</pre> +</div> +</div> +<div class="paragraph"> +<p>@ConfigAutoInject +pubic class ConfiguredItem{</p> +</div> +<div class="literalblock"> +<div class="content"> +<pre>@NoConfig +private transient int sum;</pre> +</div> +</div> +<div class="literalblock"> +<div class="content"> +<pre> private String a; + private String b; + Private String c; +}</pre> +</div> +</div> +<div class="listingblock"> +<div class="content"> +<pre>In this case the fields +a,b,c+ are configured, whereas the field +sum+ is ignored regarding +configuration. + +==== Adding custom operators using @WithConfigOperator + +The @WithConfigOperator annotation allows you define a class of type +ConfigOperator+, to being applied +to the final +Configuration+, BEFORE the value is injected. This can be used for various use cases, e.g. +filtering or validating the visible properties for a certain use case. + +[source,java]</pre> +</div> +</div> +<div class="paragraph"> +<p>@WithConfigOperator(MyConfigView.class) +pubic class ConfiguredItem{</p> +</div> +<div class="literalblock"> +<div class="content"> +<pre>@Config +private String a;</pre> +</div> +</div> +<div class="paragraph"> +<p>}</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>==== Adding custom property converters using @WithPropertyConverter + +The @WithPropertyConverter annotation allows you to define a class of type +PropertyConverter+, to be applied +on a property configured to convert the String value to the expected injected type. This can be used for +various use cases, e.g. adding custom formats, config models, decryption. + +[source,java]</pre> +</div> +</div> +<div class="paragraph"> +<p>pubic class ConfiguredItem{</p> +</div> +<div class="literalblock"> +<div class="content"> +<pre>@WithPropertyConverter(MyPropertyConverter.class) +@Config +private String a;</pre> +</div> +</div> +<div class="paragraph"> +<p>}</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>==== Defining the loading policy to be applied to configured values using @WithLoadPolicy + +The @WithLoadPolicy annotation allows to define the loading behaviour to be applied. The +LoadPolicy+ +enum hereby defines the various loading modes. + +[source,java]</pre> +</div> +</div> +<div class="paragraph"> +<p>@WithLoadPolicy(LoadPolicy.NEVER) +pubic class BootTimeStableConfig{</p> +</div> +<div class="literalblock"> +<div class="content"> +<pre>@WithPropertyConverter(MyPropertyConverter.class) +@Config +private String a;</pre> +</div> +</div> +<div class="paragraph"> +<p>}</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>=== Configuration Events + +Similar to CDI Tamaya publishes Configuration events, when instances were configured. It depends on the effective +event backend in use, if and how events are published: + +* when you have the CDI extension active events are published using the default CDI event mechanism. +* in all other scenarios events are delegated to the +tamaya-events+ module, if available, +* if no event delegation is available no events are published. + +The event published is very simple: + +[source,java]</pre> +</div> +</div> +<div class="paragraph"> +<p>public interface ConfiguredType { + Class getType(); + String getName(); + Collection<ConfiguredField> getConfiguredFields(); + Collection<ConfiguredMethod> getConfiguredMethods(); + void configure(Object instance, Configuration config); +}</p> +</div> +<div class="paragraph"> +<p>public interface ConfiguredField { + Class<?> getType(); + Collection<String> getConfiguredKeys(); + String getName(); + String getSignature(); + Field getAnnotatedField(); + void configure(Object instance, Configuration config); +}</p> +</div> +<div class="paragraph"> +<p>public interface ConfiguredMethod { + Collection<String> getConfiguredKeys(); + Class<?>[] getParameterTypes(); + Method getAnnotatedMethod(); + String getName(); + String getSignature(); + void configure(Object instance, Configuration config); +}</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre></pre> +</div> +</div> +</div> +</div> +</div></p> + + <hr /> + </div> + </div> + <div> + <div id="push"></div> + + <div id="footer"> + <div class="container"> + <p class="muted credit">© 2014-2016 Apache Software Foundation | Mixed with <a href="http://getbootstrap.com/";>Bootstrap v3.1.1</a> + | Baked with <a href="http://jbake.org";>JBake <span>v2.5.0</span></a> + at <span>2016-12-18</span> + </p> + <p> + <b>Disclaimer</b> + Apache Tamaya (incubating) is an effort undergoing + incubation at + The Apache Software Foundation (ASF), sponsored by + the name of Apache Incubator. Incubation is required of + all newly accepted projects until a further review indicates + that the infrastructure, communications, and decision making + process have stabilized in a manner consistent with other + successful ASF projects. While incubation status is not + necessarily a reflection of the completeness or stability of + the code, it does indicate that the project has yet to + be fully endorsed by the ASF.<br /> + <a href="http://incubator.apache.org/guides/website.html"; style="border:0px;" target="_target"><img class="incubator-logo" src="../../logos/egg-logo2.png"/></a> + </p> + </div> + </div> + + <!-- Le javascript + ================================================== --> + <!-- Placed at the end of the document so the pages load faster --> + <script src="../../js/jquery-1.11.1.min.js"></script> + <script src="../../js/bootstrap.min.js"></script> + <script src="../../js/prettify.js"></script> + + </div> + </body> +</html>
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class="page-header"> + <h1>Apache Tamaya&#8201;&#8212;&#8201;Extension: JodaTime</h1> + </div> + + <p><em>2016-12-18</em></p> + + <p><div id="preamble"> +<div class="sectionbody"> +<!-- toc disabled --> +</div> +</div> +<div class="sect1"> +<h2 id="Core">Tamaya JodaTime (Extension Module)</h2> +<div class="sectionbody"> +<div class="sect2"> +<h3 id="_overview">Overview</h3> +<div class="paragraph"> +<p>Tamaya JodaTime is an extension module to support the usage of <a href="http://www.joda.org/joda-time/";>Joda-Time</a> +in conjunction with Tamaya. Tamaya JodaTime defines some additional property +converters to retrieve Joda-Time types from a given configuration.</p> +</div> +<div class="paragraph"> +<p>Refer to the <a href="modules.html">extensions documentation</a> for further details +about modules.</p> +</div> +<div class="paragraph"> +<p>tools to locate resources in your classpath or file system based on descriptive +ant-styled resource patterns. To use this module add the following dependency:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-listing" data-lang="listing"><dependency> + <grooupId>org.apache.tamaya.ext</groupId> + <artifactId>tamaya-jodatime</artifactId> + <version>{tamaya_version}</version> +</dependency></code></pre> +</div> +</div> +<div class="paragraph"> +<p>After adding this dependency to your project you can retrieve +Joda-Time based values directly from a given configuration.</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-java" data-lang="java">Configuration configuration = ConfigurationProvider.getConfiguration(); + +DateTime pit = configuration.get("pointInTime", DateTime.class)</code></pre> +</div> +</div> +</div> +<div class="sect2"> +<h3 id="_specifying_date_and_time_values">Specifying date and time values</h3> +<div class="paragraph"> +<p>To be written.</p> +</div> +</div> +<div class="sect2"> +<h3 id="_specifing_periods_and_durations">Specifing periods and durations</h3> +<div class="paragraph"> +<p>To be written.</p> +</div> +</div> +</div> +</div></p> + + <hr /> + </div> + </div> + <div> + <div id="push"></div> + + <div id="footer"> + <div class="container"> + <p class="muted credit">© 2014-2016 Apache Software Foundation | Mixed with <a href="http://getbootstrap.com/";>Bootstrap v3.1.1</a> + | Baked with <a href="http://jbake.org";>JBake <span>v2.5.0</span></a> + at <span>2016-12-18</span> + </p> + <p> + <b>Disclaimer</b> + Apache Tamaya (incubating) is an effort undergoing + incubation at + The Apache Software Foundation (ASF), sponsored by + the name of Apache Incubator. Incubation is required of + all newly accepted projects until a further review indicates + that the infrastructure, communications, and decision making + process have stabilized in a manner consistent with other + successful ASF projects. While incubation status is not + necessarily a reflection of the completeness or stability of + the code, it does indicate that the project has yet to + be fully endorsed by the ASF.<br /> + <a href="http://incubator.apache.org/guides/website.html"; style="border:0px;" target="_target"><img class="incubator-logo" src="../../logos/egg-logo2.png"/></a> + </p> + </div> + </div> + + <!-- Le javascript + ================================================== --> + <!-- Placed at the end of the document so the pages load faster --> + <script src="../../js/jquery-1.11.1.min.js"></script> + <script src="../../js/bootstrap.min.js"></script> + <script src="../../js/prettify.js"></script> + + </div> + </body> +</html> http://git-wip-us.apache.org/repos/asf/incubator-tamaya-site/blob/4176b5bc/documentation/extensions/mod_json.html ---------------------------------------------------------------------- diff --git a/documentation/extensions/mod_json.html b/documentation/extensions/mod_json.html new file 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Module)</h2> +<div class="sectionbody"> +<div class="sect2"> +<h3 id="_overview">Overview</h3> +<div class="paragraph"> +<p>The Tamaya json module provides support for reading configuration using JSON format:</p> +</div> +</div> +<div class="sect2"> +<h3 id="_compatibility">Compatibility</h3> +<div class="paragraph"> +<p>The module is based on Java 7, so it will run on Java 7 and beyond.</p> +</div> +</div> +<div class="sect2"> +<h3 id="_installation">Installation</h3> +<div class="paragraph"> +<p>To benefit from configuration builder support you only must add the corresponding dependency to your module:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-xml" data-lang="xml"><dependency> + <groupId>org.apache.tamaya.ext</groupId> + <artifactId>tamaya-json</artifactId> + <version>{tamaya_version}</version> +</dependency></code></pre> +</div> +</div> +<div class="paragraph"> +<p>This extension also transitively requires the tamaya.formats module.</p> +</div> +</div> +<div class="sect2"> +<h3 id="_reading_configuration_in_json">Reading configuration in JSON</h3> +<div class="paragraph"> +<p>For reading JSON based onfiguration most easily a JSONFormat can be provided:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-java" data-lang="java">ConfigurationData dataRead = ConfigurationFormats.readConfig( + getClassLoader().getResource("myFileConfig.json"), new JSONFormat()));</code></pre> +</div> +</div> +</div> +<div class="sect2"> +<h3 id="_examples">Examples</h3> +<div class="paragraph"> +<p>The JSON module adds instances of ConfigurationFormat so JSON configuration can be read and mapped to the +according property maps. E.g. the following file is a simple and correct JSON configuration:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-listing" data-lang="listing">{ + "a" : "A", + "b" : "B", + "c" : "C", + "d" : { + "o" : "O", + "p" : "P" + } +}</code></pre> +</div> +</div> +</div> +</div> +</div></p> + + <hr /> + </div> + </div> + <div> + <div id="push"></div> + + <div id="footer"> + <div class="container"> + <p class="muted credit">© 2014-2016 Apache Software Foundation | Mixed with <a href="http://getbootstrap.com/";>Bootstrap v3.1.1</a> + | Baked with <a href="http://jbake.org";>JBake <span>v2.5.0</span></a> + at <span>2016-12-18</span> + </p> + <p> + <b>Disclaimer</b> + Apache Tamaya (incubating) is an effort undergoing + incubation at + The Apache Software Foundation (ASF), sponsored by + the name of Apache Incubator. Incubation is required of + all newly accepted projects until a further review indicates + that the infrastructure, communications, and decision making + process have stabilized in a manner consistent with other + successful ASF projects. While incubation status is not + necessarily a reflection of the completeness or stability of + the code, it does indicate that the project has yet to + be fully endorsed by the ASF.<br /> + <a href="http://incubator.apache.org/guides/website.html"; style="border:0px;" target="_target"><img class="incubator-logo" src="../../logos/egg-logo2.png"/></a> + </p> + </div> + </div> + + <!-- Le javascript + ================================================== --> + <!-- Placed at the end of the document so the pages load faster --> + <script src="../../js/jquery-1.11.1.min.js"></script> + <script src="../../js/bootstrap.min.js"></script> + <script src="../../js/prettify.js"></script> + + </div> + </body> +</html> http://git-wip-us.apache.org/repos/asf/incubator-tamaya-site/blob/4176b5bc/documentation/extensions/mod_management.html ---------------------------------------------------------------------- diff --git a/documentation/extensions/mod_management.html b/documentation/extensions/mod_management.html new file mode 100644 index 0000000..cb80b0a --- /dev/null +++ b/documentation/extensions/mod_management.html @@ -0,0 +1,297 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";> + +<html xmlns="http://www.w3.org/1999/xhtml";> + <head> + <meta charset="utf-8"/> + <title>Apache Tamaya&#8201;&#8212;&#8201;Extension: JMX Management Access</title> + <meta name="viewport" content="width=device-width, initial-scale=1.0"/> + <meta name="description" content=""/> + <meta name="author" content=""/> + <meta name="keywords" content=""/> + <meta name="generator" content="'JBake '+'${version}"/> + + <!-- Le styles --> + <link href="../../css/bootstrap.min.css" rel="stylesheet"/> + <link href="../../css/asciidoctor.css" rel="stylesheet"/> + <link href="../../css/base.css" rel="stylesheet"/> + <link href="../../css/prettify.css" rel="stylesheet"/> + + <!-- HTML5 shim, for IE6-8 support of HTML5 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toc disabled --> +</div> +</div> +<div class="sect1"> +<h2 id="ExtModel">Tamaya Management (JMX Support) (Extension Module)</h2> +<div class="sectionbody"> +<div class="sect2"> +<h3 id="_overview">Overview</h3> +<div class="paragraph"> +<p>The Tamaya management module provides support for registering a JMX management bean for accessing configuration.</p> +</div> +</div> +<div class="sect2"> +<h3 id="_compatibility">Compatibility</h3> +<div class="paragraph"> +<p>The module is based on Java 7, so it will run on Java 7 and beyond.</p> +</div> +</div> +<div class="sect2"> +<h3 id="_installation">Installation</h3> +<div class="paragraph"> +<p>To benefit from configuration builder support you only must add the corresponding dependency to your module:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-xml" data-lang="xml"><dependency> + <groupId>org.apache.tamaya.ext</groupId> + <artifactId>tamaya-management</artifactId> + <version>{tamaya_version}</version> +</dependency></code></pre> +</div> +</div> +</div> +<div class="sect2"> +<h3 id="_the_managedconfigmbean_bean">The ManagedConfigMBean bean</h3> +<div class="paragraph"> +<p>The management model defines the MBean of type ManagedConfigMBean as follows:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-java" data-lang="java">public interface ManagedConfigMBean { + String getJsonConfigurationInfo(); + String getXmlConfigurationInfo(); + Map<String, String> getConfiguration(); + Map<String, String> getSection(String area, boolean recursive); + Set<String> getSections(); + Set<String> getTransitiveSections(); + boolean isSectionExisting(String area); + default boolean isSectionEmpty(String area); +}</code></pre> +</div> +</div> +<div class="ulist"> +<ul> +<li> +<p>getJsonConfigurationInfo,getXmlConfigurationInfo return a JSON or XML representation of the +current configuration.</p> +</li> +<li> +<p>getConfiguration access the current configuration properties.</p> +</li> +<li> +<p>getSection allows to extract all entries below a certain subkey. With <em>recursive</em> the query +will not only return direct children, but also recursively walk down all subsection of the +given section key.</p> +</li> +<li> +<p>getSections returns all current known section names.</p> +</li> +<li> +<p>getTransitiveSections return all sections, but also adds all transitive subsection as single +entries to the set as well.</p> +</li> +<li> +<p>isSectionExisting and isSectionEmpty allow for quering if entries are present under the given +section keys.</p> +</li> +</ul> +</div> +</div> +<div class="sect2"> +<h3 id="_registering_the_managedconfigmbean">Registering the ManagedConfigMBean</h3> +<div class="paragraph"> +<p>For registering the current ManagedConfigMBean instance to the current MBean platform server, the +following static methods are available:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-java" data-lang="java">public final class ConfigManagementSupport{ + + private JMXSupport(){} + + public static ObjectName registerMBean(); + public static ObjectName registerMBean(String context); + public static ObjectName unregisterMBean(); + public static ObjectName unregisterMBean(String context); +}</code></pre> +</div> +</div> +<div class="ulist"> +<ul> +<li> +<p>registerMBean creates a new ManagedConfigMBean instance using the ServiceContextManager +and registers it. Optionally an additional <em>context</em> parameter can be passed, which allows +to register the management bean for different classloaders, e.g. for different +ears.</p> +</li> +<li> +<p>unregisterMBean does the oppsite than registering obviously.</p> +</li> +</ul> +</div> +<div class="admonitionblock note"> +<table> +<tr> +<td class="icon"> +<div class="title">Note</div> +</td> +<td class="content"> +The instance of ManagedConfigMBean to be created and registered is evaluated by use og the + ServiceContextManager. So you can replace the bean implementation by registering your + overriding implementation using the current ServiceContext (by default using + java.util.ServiceLoader and @Priority annotation. +</td> +</tr> +</table> +</div> +</div> +</div> +</div></p> + + <hr /> + </div> + </div> + <div> + <div id="push"></div> + + <div id="footer"> + <div class="container"> + <p class="muted credit">© 2014-2016 Apache Software Foundation | Mixed with <a href="http://getbootstrap.com/";>Bootstrap v3.1.1</a> + | Baked with <a href="http://jbake.org";>JBake <span>v2.5.0</span></a> + at <span>2016-12-18</span> + </p> + <p> + <b>Disclaimer</b> + Apache Tamaya (incubating) is an effort undergoing + incubation at + The Apache Software Foundation (ASF), sponsored by + the name of Apache Incubator. Incubation is required of + all newly accepted projects until a further review indicates + that the infrastructure, communications, and decision making + process have stabilized in a manner consistent with other + successful ASF projects. While incubation status is not + necessarily a reflection of the completeness or stability of + the code, it does indicate that the project has yet to + be fully endorsed by the ASF.<br /> + <a href="http://incubator.apache.org/guides/website.html"; style="border:0px;" target="_target"><img class="incubator-logo" src="../../logos/egg-logo2.png"/></a> + </p> + </div> + </div> + + <!-- Le javascript + ================================================== --> + <!-- Placed at the end of the document so the pages load faster --> + <script src="../../js/jquery-1.11.1.min.js"></script> + <script src="../../js/bootstrap.min.js"></script> + <script src="../../js/prettify.js"></script> + + </div> + </body> +</html> http://git-wip-us.apache.org/repos/asf/incubator-tamaya-site/blob/4176b5bc/documentation/extensions/mod_metamodel-staged.html ---------------------------------------------------------------------- diff --git a/documentation/extensions/mod_metamodel-staged.html 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toc disabled --> +</div> +</div> +<div class="sect1"> +<h2 id="Remote">Tamaya Metamodel: Staged PropertySources (Extension Module)</h2> +<div class="sectionbody"> +<div class="sect2"> +<h3 id="_overview">Overview</h3> +<div class="paragraph"> +<p>The Tamaya Staged PropertySources extension provides a base class and default implementation for loading +multistaged configuration easily from a common configuration location.</p> +</div> +</div> +<div class="sect2"> +<h3 id="_compatibility">Compatibility</h3> +<div class="paragraph"> +<p>The module is based on Java 7, so it will run on Java 7 and beyond.</p> +</div> +</div> +<div class="sect2"> +<h3 id="_installation">Installation</h3> +<div class="paragraph"> +<p>To benefit from Tamaya CDI integration you only must add the corresponding dependency to your module:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre class="prettyprint highlight"><code class="language-xml" data-lang="xml"><dependency> + <groupId>org.apache.tamaya.ext.metamodels</groupId> + <artifactId>tamaya-metamodel.staged</artifactId> + <version>{tamaya_version}</version> +</dependency></code></pre> +</div> +</div> +<div class="paragraph"> +<p>The component will not register any components. The component basically provides the following options:</p> +</div> +<div class="ulist"> +<ul> +<li> +<p>Use it as default configuration extension. Hereby you should define your stages in use by setting the +env.STAGE system property with the stages to be loaded in order of precedence (most significant last), +e.g. sys-env,DEFAULTS,TEST,DEVELOPMENT. _Additionally_ you must register ++org.apache.tamaya.staged.StagedConfigPropertiesProvider as in</p> +</li> +</ul> +</div> +<div class="listingblock"> +<div class="content"> +<pre>META-INF +|_service + |_org.apache.tamaya.spi.PropertySourceProvider</pre> +</div> +</div> +<div class="paragraph"> +<p>Tamaya will then load .properties files from System.getenv(), +classpath:DEFAULTS.properties, classpath:TEST.properties and +classpath:DEVELOPMENT.properties</p> +</div> +<div class="ulist"> +<ul> +<li> +<p>For more advanced requirements, such as alternate locations, patterns or formats, you can also extend one of the +provided classes (org.apache.tamaya.staged.StagedConfigPropertiesProvider,</p> +<div class="ulist"> +<ul> +<li> +<p>BaseStagedPropertySourceProvider). Extending provides features such as:</p> +</li> +<li> +<p>Defining a prefix for all entries provided/loaded.</p> +</li> +<li> +<p>Using alternate locations or formats.</p> +</li> +<li> +<p>Defining the ordinals used.</p> +</li> +</ul> +</div> +</li> +</ul> +</div> +</div> +</div> +</div></p> + + <hr /> + </div> + </div> + <div> + <div id="push"></div> + + <div id="footer"> + <div class="container"> + <p class="muted credit">© 2014-2016 Apache Software Foundation | Mixed with <a href="http://getbootstrap.com/";>Bootstrap v3.1.1</a> + | Baked with <a href="http://jbake.org";>JBake <span>v2.5.0</span></a> + at <span>2016-12-18</span> + </p> + <p> + <b>Disclaimer</b> + Apache Tamaya (incubating) is an effort undergoing + incubation at + The Apache Software Foundation (ASF), sponsored by + the name of Apache Incubator. Incubation is required of + all newly accepted projects until a further review indicates + that the infrastructure, communications, and decision making + process have stabilized in a manner consistent with other + successful ASF projects. While incubation status is not + necessarily a reflection of the completeness or stability of + the code, it does indicate that the project has yet to + be fully endorsed by the ASF.<br /> + <a href="http://incubator.apache.org/guides/website.html"; style="border:0px;" target="_target"><img class="incubator-logo" src="../../logos/egg-logo2.png"/></a> + </p> + </div> + </div> + + <!-- Le javascript + ================================================== --> + <!-- Placed at the end of the document so the pages load faster --> + <script src="../../js/jquery-1.11.1.min.js"></script> + <script src="../../js/bootstrap.min.js"></script> + <script src="../../js/prettify.js"></script> + + </div> + </body> +</html>
