JAXB implementation of query

Common API for the AKTIN data warehouse

---------------------------------------

Generate XSD files:

```

"$JAVA_HOME"/bin/schemagen -d target -cp target/classes org.aktin.exchange.Query

```

Query exchange

--------------

```

<request>

	<id>unique request id</id>

	<date-reference>2016-04-11</date-reference>

	<published>

	<query>

		<id>unique query id</id>

		<description>

		</description>

		<principal>

			<name></name>

			<organisation></organisation>

			<location></location>

			<email></email>

			<phone></phone>

			<url></url>

		</principal>

		<schedule type="single|repeating|benchmark">

			<duration>-P1Y</duration>

			<interval>P1Y</interval>

		</schedule>

		<concepts>

			<concept id="CEDIS30:XXX" type="raw"/>

			<concept id="XXX1" type="aggregate">

				<count group-by="fact.value">

			</concept>

			<concept id="XXX1" type="aggregate">

				<!-- by arrival time -->

				<count group-by="substr(8,10,fact.start)">

				<max/>

				<min/>

			</concept>

		</concepts>

		<definition xsi:type="sql">

		</definition>

	</query>

	<signature from="broker" algorithm="SHA256withRSA">...</signature>

	<signature from="me" algorithm="SHA256withRSA">...</signature>

	<broker>

		<last-modified>max timestamp der nachfolgenden</last-modified>

		<!-- timestamp the query was published by the broker -->

		<published>2015-12-01T18:30:14</published>

		<!-- later, the query can be either canceled or closed -->

		<closed>2015-12-02T18:30:00</closed>

		<canceled>2015-12-02T18:30:14</canceled>

	</broker>

</query>

	<request-status ref="123">

		<last-modified>max timestampt der nachfolgenden</last-modified>

		<received>XXXtimestamp</received>

		<confirmation method="single|double|automatic">xxx</confirmation>

		<!-- confirmation or rejection -->

		<rejected></rejected>

		<comment></comment>

		<last-execution>

			<completed>XXXtimestamp</completed>

			<failed></failed>

		</last-execution>

		<last-contact>

		<result-submitted>XXX timestamp</result-submitted>

	</request-status>

<query-result id-ref="">

</query-result>

```

Error in maven schemagen:

Post error in maven schemagen:

Should not convert spaces to %20:

schemagen -encoding UTF-8 -d D:\Users\marap1\Projects\2014-09 AKTIN\repo-v2\aktin\dwh-api\target\schemagen-work\compile_scope -classpath /D:/Users/marap1/Projects/2014-09%20AKTIN/repo-v2/aktin/dwh-api/src/main/java/ -episode D:\Users\marap1\Projects\2014-09 AKTIN\repo-v2\aktin\dwh-api\target\generated-resources\schemagen\META-INF\sun-jaxb.episode src\main\java\org\aktin\exchange\AbstractConcept.java src\main\java\org\aktin\exchange\Principal.java src\main\java\org\aktin\exchange\Query.java src\main\java\org\aktin\exchange\RawConcept.java src\main\java\org\aktin\exchange\XMLConstants.java src\main\java\org\aktin\exchange\package-info.java

https://github.com/mojohaus/jaxb2-maven-plugin/issues/

		<version>0.1-SNAPSHOT</version>

	</parent>

	<build>

		<!--

		<resources>

			<resource>

				<directory>src/main/resources</directory>

			</resource>

			<resource>

				<directory>target/generated-resources</directory>

			</resource>

		</resources>

		-->

		<plugins>

			<plugin>

				<groupId>org.codehaus.mojo</groupId>

				<artifactId>jaxb2-maven-plugin</artifactId>

				<version>2.2</version>

				<executions>

					<execution>

						<id>schemagen</id>

						<goals>

							<goal>schemagen</goal>

						</goals>

					</execution>

				</executions>

				<configuration>

					<locale>en</locale>

					<sources>

						<source>src/main/java/org/aktin/exchange</source>

					</sources>

				</configuration>

			</plugin>

		</plugins>

	</build> 

	<dependencies>

		<!-- unit tests -->

package org.aktin.exchange;

import javax.xml.bind.annotation.XmlAttribute;

import javax.xml.bind.annotation.XmlSeeAlso;

@XmlSeeAlso({RawConcept.class})

public abstract class AbstractConcept {

	/**

	 * Unique identifier of the concept.

	 */

	@XmlAttribute

	public String id;

}

package org.aktin.exchange;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlElement;

/**

 * Principal of a query.

 * @author R.W.Majeed

 *

 */

@XmlAccessorType(XmlAccessType.FIELD)

public class Principal {

	/**

	 * Principal's full name

	 */

	@XmlElement(required=true)

	public String name;

	/**

	 * Principal's organisation

	 */

	@XmlElement(required=true)

	public String organisation;

	@XmlElement(required=true)

	public String email;

	@XmlElement(required=true)

	public String phone;

	/**

	 * Postal address

	 */

	public String address;

	/**

	 * Web page URL

	 */

	public String url;

}