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55.2. Generated API Sub-Project

Overview
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Assuming that you generated a new Maven project as described in Section 55.1, “Generate Code with the Maven Archetype”, you can now find a Maven sub-project for packaging the Java API under the camel-api-example/camel-api-example-api project directory. In this section, we take a closer look at the generated example code and describe how it works.

Sample Java API
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The generated example code includes a sample Java API, on which the example API component is based. The sample Java API is relatively simple, consisting of just two Hello World classes: ExampleJavadocHello and ExampleFileHello.

ExampleJavadocHello class
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Example 55.1, “ExampleJavadocHello class” shows the ExampleJavadocHello class from the sample Java API. As the name of the class suggests, this particular class is used to show how you can supply mapping metadata from Javadoc.

Example 55.1. ExampleJavadocHello class

// Java
package org.jboss.fuse.example.api;

/**
 * Sample API used by Example Component whose method signatures are read from Javadoc.
 */
public class ExampleJavadocHello {

    public String sayHi() {
        return "Hello!";
    }

    public String greetMe(String name) {
        return "Hello " + name;
    }

    public String greetUs(String name1, String name2) {
            return "Hello " + name1 + ", " + name2;
    }
}
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ExampleFileHello class
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Example 55.2, “ExampleFileHello class” shows the ExampleFileHello class from the sample Java API. As the name of the class suggests, this particular class is used to show how you can supply mapping metadata from a signature file.

Example 55.2. ExampleFileHello class

// Java
package org.jboss.fuse.example.api;

/**
 * Sample API used by Example Component whose method signatures are read from File.
 */
public class ExampleFileHello {

    public String sayHi() {
        return "Hello!";
    }

    public String greetMe(String name) {
        return "Hello " + name;
    }

    public String greetUs(String name1, String name2) {
            return "Hello " + name1 + ", " + name2;
    }
}
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Generating the Javadoc metadata for ExampleJavadocHello
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Because the metadata for ExampleJavadocHello is provided as Javadoc, it is necessary to generate Javadoc for the sample Java API and install it into the camel-api-example-api Maven artifact. The API POM file, camel-api-example-api/pom.xml, configures the maven-javadoc-plugin to perform this step automatically during the Maven build.
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