reporting API added

.gitignore

+.settings/
+.classpath
+.project
+target/
\ No newline at end of file

pom.xml

+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<name>AKTIN : DWH API</name>
+
+	<groupId>org.aktin</groupId>
+	<artifactId>dwh-api</artifactId>
+	<version>0.1-SNAPSHOT</version>
+
+	<parent>
+		<groupId>org.aktin</groupId>
+		<artifactId>aktin</artifactId>
+		<version>0.1-SNAPSHOT</version>
+	</parent>
+	<build>
+		<!--
+		<resources>
+			<resource>
+				<directory>src/main/resources</directory>
+			</resource>
+		</resources>
+		-->
+		<plugins>
+		</plugins>
+	</build>
+	<dependencies>
+		<!-- unit tests -->
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+		</dependency>
+	</dependencies>
+</project>
\ No newline at end of file

src/main/java/org/aktin/report/Report.java

+package org.aktin.report;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Path;
+
+/**
+ * Interface for reports. 
+ * A report specifies (1) which data should be extracted, (2) one or more R scripts
+ * to execute with the extracted data and (3) transformation scripts to generate 
+ * PDF or HTML reports.
+ * 
+ * @author R.W.Majeed
+ *
+ */
+public interface Report {
+
+	/**
+	 * Get the report name
+	 * @return report name
+	 */
+	String getName();
+	
+	/**
+	 * Get concept names which are guaranteed to occur only once per encounter.
+	 * These concepts will be included in the generated encounter data table.
+	 * @return concept IDs
+	 */
+	String[] getEncounterConcepts();
+	/**
+	 * Get concepts names which may repeat in a given encounter. For each
+	 * of these concepts, a separate data table will be generated.
+	 * @return concept IDs
+	 */
+	String[] getRepeatingConcepts();
+	
+	/**
+	 * Copies all scripts and resource needed for the Rscript invocation
+	 * to the specified working directory. The file names of all copied
+	 * resources are returned on exit.
+	 * 
+	 * @param workingDirectory working directory for the R invocation.
+	 * @return file names of the copied resources. The first element of the
+	 * returned array is the main script that should be run to generate
+	 * the report resource.
+	 *
+	 * @throws IOException IO error. No files were copied.
+	 */
+	String[] copyResourcesForR(Path workingDirectory)throws IOException;
+	
+	/**
+	 * Copies all transformation scripts needed for the XML-FO transformation
+	 * to generate a PDF report to the specified working directory.
+	 * 
+	 * 
+	 * @param workingDirectory for the Apache FOP invocation
+	 * @return files names of copied resources. At least two files must
+	 * be returned: First element the XML input file and second element 
+	 * is the XSL file.
+	 * 
+	 * @throws IOException IO error. No files were copied.
+	 */
+	String[] copyResourcesForFOP(Path workingDirectory)throws IOException;
+	
+	/**
+	 * Read static resource for web reports. Static resources are independent
+	 * of any generated report data. E.g. css, images, javascript files
+	 * @param path to the static resource
+	 * @return input stream or {@code null} if the resource is not available
+	 */
+	InputStream readStaticWebResource(String path);
+}